ecos: packages/net/common/current/src/dhcp

annotate packages/net/common/current/src/dhcp_prot.c @ 490:7c34839e7e97

* src/bootp_support.c: Fix licence which should always have been GPL since no BSD licensed code was in fact involved. * src/dhcp_prot.c: Ditto. * src/dhcp_support.c: Ditto. * src/network_support.c: Ditto. * src/tftp_client.c: Ditto. * src/tftp_dummy_file.c: Ditto. * src/tftp_server.c: Ditto.

author	jlarmour
date	Sun, 12 Jan 2003 04:53:28 +0000
parents	d364b93024e5
children	07ad44cfd9a4

rev	line source
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1 /*==========================================================================
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	2 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	3 // dhcp_prot.c
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	4 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	5 // DHCP protocol implementation for DHCP client
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	6 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	7 //==========================================================================
490 7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	8 //####ECOSGPLCOPYRIGHTBEGIN####
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	9 // -------------------------------------------
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	10 // This file is part of eCos, the Embedded Configurable Operating System.
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	12 //
490 7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	13 // eCos is free software; you can redistribute it and/or modify it under
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	14 // the terms of the GNU General Public License as published by the Free
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	15 // Software Foundation; either version 2 or (at your option) any later version.
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	16 //
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	20 // for more details.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	21 //
490 7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	22 // You should have received a copy of the GNU General Public License along
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	23 // with eCos; if not, write to the Free Software Foundation, Inc.,
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	25 //
490 7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	26 // As a special exception, if other files instantiate templates or use macros
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	27 // or inline functions from this file, or you compile this file and link it
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	28 // with other works to produce a work based on this file, this file does not
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	29 // by itself cause the resulting work to be covered by the GNU General Public
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	30 // License. However the source code for this file must still be made available
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	31 // in accordance with section (3) of the GNU General Public License.
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	32 //
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	33 // This exception does not invalidate any other reasons why a work based on
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	34 // this file might be covered by the GNU General Public License.
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	35 //
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	37 // at http://sources.redhat.com/ecos/ecos-license/
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	38 // -------------------------------------------
7c34839e7e97 * src/bootp_support.c: Fix licence which should always have been jlarmour parents: 253 diff changeset	39 //####ECOSGPLCOPYRIGHTEND####
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	40 //==========================================================================
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	41 //#####DESCRIPTIONBEGIN####
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	42 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	43 // Author(s): hmt
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	44 // Contributors: gthomas
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	45 // Date: 2000-07-01
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	46 // Purpose: DHCP support
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	47 // Description:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	48 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	49 //####DESCRIPTIONEND####
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	50 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	51 //========================================================================*/
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	52
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	53 #include <pkgconf/system.h>
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	54 #include <pkgconf/net.h>
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	55
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	56 #ifdef CYGPKG_NET_DHCP
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	57
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	58 #if 0
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	59 #define perror( txt ) // nothing
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	60 #endif
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	61
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	62 #include <network.h>
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	63 #include <dhcp.h>
235 f9db7cb0692e Pedantic include of <errno.h> gthomas parents: 229 diff changeset	64 #include <errno.h>
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	65
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	66 #include <cyg/infra/cyg_ass.h>
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	67
253 d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	68 #ifdef INET6
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	69 #include <net/if_var.h>
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	70 #include <netinet6/in6_var.h>
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	71 #endif
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	72
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	73 // ------------------------------------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	74 // Returns a pointer to the end of dhcp message (or NULL if invalid)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	75 // meaning the address of the byte after the TAG_END token in the vendor
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	76 // data.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	77
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	78 static unsigned char *
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	79 scan_dhcp_size( struct bootp *ppkt )
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	80 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	81 unsigned char *op;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	82
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	83 op = &ppkt->bp_vend[0];
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	84 // First check for the cookie!
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	85 if ( op[0] != 99 \|\|
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	86 op[1] != 130 \|\|
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	87 op[2] != 83 \|\|
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	88 op[3] != 99 ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	89 CYG_FAIL( "Bad DHCP cookie" );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	90 return NULL;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	91 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	92 op += 4;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	93 while (*op != TAG_END) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	94 op += *(op+1)+2;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	95 if ( op > &ppkt->bp_vend[BP_VEND_LEN-1] ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	96 CYG_FAIL( "Oversize DHCP packet in dhcp_size" );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	97 return NULL;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	98 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	99 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	100 // Check op has not gone wild
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	101 CYG_ASSERT( op > (unsigned char *)(&ppkt[0]), "op pointer underflow!" );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	102 // Compare op with non-existent "next" struct bootp in the array.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	103 CYG_ASSERT( op < (unsigned char *)(&ppkt[1]), "op pointer overflow!" );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	104 return op + 1; // Address of first invalid byte
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	105 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	106
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	107 // ------------------------------------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	108 // Get the actual packet size of an initialized buffer
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	109
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	110 static int
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	111 dhcp_size( struct bootp *ppkt )
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	112 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	113 unsigned char *op;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	114
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	115 op = scan_dhcp_size( ppkt );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	116 if ( !op ) return 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	117 return (op - (unsigned char *)ppkt);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	118 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	119
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	120
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	121 // ------------------------------------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	122 // Get the actual packet size of an initialized buffer
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	123 // This will also pad the packet with 0 if length is less
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	124 // than BP_STD_TX_MINPKTSZ.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	125
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	126 static int
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	127 dhcp_size_for_send( struct bootp *ppkt )
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	128 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	129 unsigned char *op;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	130
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	131 op = scan_dhcp_size( ppkt );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	132 if ( !op ) return 0; // Better not scribble!
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	133 // Zero extra bytes until the packet is large enough.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	134 for ( ; op < (((unsigned char *)ppkt) + BP_STD_TX_MINPKTSZ); op++ )
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	135 *op = 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	136 return (op - (unsigned char *)ppkt);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	137 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	138
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	139 // ------------------------------------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	140 // Insert/set an option value in an initialized buffer
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	141
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	142 static int
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	143 set_fixed_tag( struct bootp *ppkt,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	144 unsigned char tag,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	145 cyg_uint32 value,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	146 int len)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	147 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	148 unsigned char *op;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	149
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	150 // Initially this will only scan the options field.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	151
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	152 op = &ppkt->bp_vend[4];
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	153 while (*op != TAG_END) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	154 if ( op > &ppkt->bp_vend[BP_VEND_LEN-1] ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	155 CYG_FAIL( "Oversize DHCP packet in set_fixed_tag" );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	156 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	157 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	158 if (*op == tag) // Found it...
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	159 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	160 op += *(op+1)+2;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	161 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	162
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	163 if (*op == tag) { // Found it...
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	164 if ( *(op+1) != len ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	165 CYG_FAIL( "Wrong size in set_fixed_tag" );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	166 return false; // wrong size
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	167 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	168 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	169 else { // overwrite the end tag and install a new one
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	170 if ( op + len + 2 > &ppkt->bp_vend[BP_VEND_LEN-1] ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	171 CYG_FAIL( "Oversize DHCP packet in set_fixed_tag append" );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	172 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	173 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	174 *op = tag;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	175 *(op+1) = len;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	176 *(op + len + 2) = TAG_END;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	177 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	178 // and insert the value. Net order is BE.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	179 op += len + 2 - 1; // point to end of value
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	180 while ( len-- > 0 ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	181 *op-- = (unsigned char)(value & 255);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	182 value >>= 8;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	183 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	184 return true;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	185 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	186
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	187 // Note that this does not permit changing the size of an extant tag.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	188 static int
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	189 set_variable_tag( struct bootp *ppkt,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	190 unsigned char tag,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	191 cyg_uint8 *pvalue,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	192 int len)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	193 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	194 unsigned char *op;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	195
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	196 // Initially this will only scan the options field.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	197 op = &ppkt->bp_vend[4];
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	198 while (*op != TAG_END) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	199 if ( op > &ppkt->bp_vend[BP_VEND_LEN-1] ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	200 CYG_FAIL( "Oversize DHCP packet in set_variable_tag" );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	201 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	202 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	203 if (*op == tag) // Found it...
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	204 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	205 op += *(op+1)+2;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	206 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	207
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	208 if (*op == tag) { // Found it...
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	209 if ( *(op+1) != len ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	210 CYG_FAIL( "Wrong size in set_variable_tag" );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	211 return false; // wrong size
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	212 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	213 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	214 else { // overwrite the end tag and install a new one
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	215 if ( op + len + 2 > &ppkt->bp_vend[BP_VEND_LEN-1] ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	216 CYG_FAIL( "Oversize DHCP packet in set_variable_tag append" );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	217 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	218 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	219 *op = tag;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	220 *(op+1) = len;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	221 *(op + len + 2) = TAG_END;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	222 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	223 // and insert the value. No order is implied.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	224 op += 2; // point to start of value
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	225 while ( len-- > 0 ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	226 op++ = pvalue++;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	227 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	228 return true;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	229 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	230
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	231 static int
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	232 unset_tag( struct bootp *ppkt,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	233 unsigned char tag )
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	234 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	235 unsigned char op, nextp = 0, *killp = 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	236
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	237 // Initially this will only scan the options field.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	238
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	239 op = &ppkt->bp_vend[4];
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	240 while (*op != TAG_END) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	241 if ( op > &ppkt->bp_vend[BP_VEND_LEN-1] ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	242 CYG_FAIL( "Oversize DHCP packet in unset_tag" );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	243 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	244 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	245 if (*op == tag) { // Found it...
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	246 killp = op; // item to kill
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	247 nextp = op + *(op+1)+2; // next item address
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	248 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	249 op += *(op+1)+2; // scan to the end
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	250 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	251
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	252 if ( !killp )
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	253 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	254
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	255 // Obliterate the found op by copying down: *op is the end.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	256 while( nextp <= op ) // <= to copy the TAG_END too.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	257 killp++ = nextp++;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	258
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	259 return true;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	260 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	261
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	262 // ------------------------------------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	263 // Bring up an interface enough to broadcast, before we know who we are
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	264
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	265 static int
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	266 bring_half_up(const char intf, struct ifreq ifrp )
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	267 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	268 int s;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	269 int one = 1;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	270
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	271 struct sockaddr_in *addrp;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	272 struct ecos_rtentry route;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	273
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	274 // Ensure clean slate
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	275 cyg_route_reinit(); // Force any existing routes to be forgotten
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	276
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	277 s = socket(AF_INET, SOCK_DGRAM, 0);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	278 if (s < 0) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	279 perror("socket");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	280 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	281 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	282
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	283 if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, &one, sizeof(one))) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	284 perror("setsockopt");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	285 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	286 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	287
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	288 addrp = (struct sockaddr_in *) &ifrp->ifr_addr;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	289 memset(addrp, 0, sizeof(*addrp));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	290 addrp->sin_family = AF_INET;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	291 addrp->sin_len = sizeof(*addrp);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	292 addrp->sin_port = 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	293 addrp->sin_addr.s_addr = INADDR_ANY;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	294
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	295 strcpy(ifrp->ifr_name, intf);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	296 if (ioctl(s, SIOCSIFADDR, ifrp)) { /* set ifnet address */
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	297 perror("SIOCSIFADDR");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	298 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	299 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	300
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	301 if (ioctl(s, SIOCSIFNETMASK, ifrp)) { /* set net addr mask */
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	302 perror("SIOCSIFNETMASK");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	303 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	304 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	305
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	306 /* the broadcast address is 255.255.255.255 */
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	307 memset(&addrp->sin_addr, 255, sizeof(addrp->sin_addr));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	308 if (ioctl(s, SIOCSIFBRDADDR, ifrp)) { /* set broadcast addr */
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	309 perror("SIOCSIFBRDADDR");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	310 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	311 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	312
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	313 ifrp->ifr_flags = IFF_UP \| IFF_BROADCAST \| IFF_RUNNING;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	314 if (ioctl(s, SIOCSIFFLAGS, ifrp)) { /* set ifnet flags */
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	315 perror("SIOCSIFFLAGS up");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	316 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	317 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	318
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	319 if (ioctl(s, SIOCGIFHWADDR, ifrp) < 0) { /* get MAC address */
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	320 perror("SIOCGIFHWADDR 1");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	321 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	322 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	323
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	324 // Set up routing
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	325 addrp->sin_family = AF_INET;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	326 addrp->sin_port = 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	327 addrp->sin_len = sizeof(*addrp); // Size of address
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	328
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	329 /* the broadcast address is 255.255.255.255 */
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	330 memset(&addrp->sin_addr, 255, sizeof(addrp->sin_addr));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	331 memset(&route, 0, sizeof(route));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	332 memcpy(&route.rt_gateway, addrp, sizeof(*addrp));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	333
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	334 addrp->sin_addr.s_addr = INADDR_ANY;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	335 memcpy(&route.rt_dst, addrp, sizeof(*addrp));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	336 memcpy(&route.rt_genmask, addrp, sizeof(*addrp));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	337
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	338 route.rt_dev = ifrp->ifr_name;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	339 route.rt_flags = RTF_UP\|RTF_GATEWAY;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	340 route.rt_metric = 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	341
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	342 if (ioctl(s, SIOCADDRT, &route)) { /* add route */
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	343 if (errno != EEXIST) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	344 perror("SIOCADDRT 3");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	345 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	346 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	347 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	348
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	349 close(s);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	350
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	351 return true;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	352 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	353
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	354
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	355 // ------------------------------------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	356 // DHCP retransmission timeouts and number of tries
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	357 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	358 // To work better with simulated failures (or real ones!) so that the rest
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	359 // of the system is tested, rather than DHCP renewal failures pulling
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	360 // everything down, we try a little more zealously than the RFC suggests.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	361
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	362 static unsigned char timeout_random = 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	363
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	364 struct timeout_state {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	365 unsigned int secs;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	366 int countdown;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	367 };
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	368
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	369 static inline void reset_timeout( struct timeval ptv, struct timeout_state pstate )
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	370 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	371 timeout_random++;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	372 pstate->countdown = 4; // initial fast retries
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	373 pstate->secs = 3 + (timeout_random & 3);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	374 ptv->tv_sec = 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	375 ptv->tv_usec = 65536 * (2 + (timeout_random & 3)); // 0.1 - 0.3S, about
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	376 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	377
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	378 static inline int next_timeout( struct timeval ptv, struct timeout_state pstate )
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	379 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	380 if ( 0 < pstate->countdown-- )
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	381 return true;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	382 if ( 0 == ptv->tv_sec )
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	383 ptv->tv_sec = pstate->secs;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	384 else {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	385 timeout_random++;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	386 pstate->secs = ptv->tv_sec * 2 - 2 + (timeout_random & 3);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	387 pstate->countdown = 2; // later fast retries
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	388 ptv->tv_sec = 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	389 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	390 return pstate->secs < 100; // If longer, too many tries...
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	391 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	392
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	393 // ------------------------------------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	394 // Lease expiry and alarms to notify it
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	395
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	396 static cyg_alarm_t alarm_function;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	397
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	398 static void alarm_function(cyg_handle_t alarm, cyg_addrword_t data)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	399 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	400 struct dhcp_lease lease = (struct dhcp_lease )data;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	401 lease->which \|= lease->next;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	402 if ( lease->needs_attention )
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	403 cyg_semaphore_post( lease->needs_attention );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	404
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	405 // Step the lease on into its next state of being alarmed ;-)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	406 if ( lease->next & DHCP_LEASE_EX ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	407 cyg_alarm_disable( alarm );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	408 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	409 else if ( lease->next & DHCP_LEASE_T2 ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	410 lease->next = DHCP_LEASE_EX;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	411 cyg_alarm_initialize( lease->alarm, lease->expiry, 0 );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	412 cyg_alarm_enable( lease->alarm );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	413 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	414 else if ( lease->next & DHCP_LEASE_T1 ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	415 lease->next = DHCP_LEASE_T2;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	416 cyg_alarm_initialize( lease->alarm, lease->t2, 0 );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	417 cyg_alarm_enable( lease->alarm );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	418 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	419 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	420
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	421 static inline void no_lease( struct dhcp_lease *lease )
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	422 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	423 if ( lease->alarm ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	424 // Already set: delete this.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	425 cyg_alarm_disable( lease->alarm );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	426 cyg_alarm_delete( lease->alarm );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	427 lease->alarm = 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	428 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	429 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	430
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	431 static inline void new_lease( struct bootp bootp, struct dhcp_lease lease )
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	432 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	433 cyg_tick_count_t now = cyg_current_time();
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	434 cyg_tick_count_t then;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	435 cyg_uint32 tag = 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	436 cyg_uint32 expiry_then;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	437 cyg_resolution_t resolution =
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	438 cyg_clock_get_resolution(cyg_real_time_clock());
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	439 cyg_handle_t h;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	440 unsigned int length;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	441
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	442 // Silence any jabbering from past lease on this interface
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	443 no_lease( lease );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	444 lease->which = lease->next = 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	445 cyg_clock_to_counter(cyg_real_time_clock(), &h);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	446 cyg_alarm_create( h, alarm_function, (cyg_addrword_t)lease,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	447 &lease->alarm, &lease->alarm_obj );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	448
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	449 // extract the lease time and scale it &c to now.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	450 length = sizeof(tag);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	451 if(!get_bootp_option( bootp, TAG_DHCP_LEASE_TIME, &tag ,&length))
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	452 tag = 0xffffffff;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	453
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	454 if ( 0xffffffff == tag ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	455 lease->expiry = 0xffffffffffffffff;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	456 lease->t2 = 0xffffffffffffffff;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	457 lease->t1 = 0xffffffffffffffff;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	458 return; // it's an infinite lease, hurrah!
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	459 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	460
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	461 then = (cyg_uint64)(ntohl(tag));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	462 expiry_then = then;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	463
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	464 then *= 1000000000; // into nS - we know there is room in a tick_count_t
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	465 then = (then / resolution.dividend) * resolution.divisor; // into system ticks
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	466 lease->expiry = now + then;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	467 length = sizeof(tag);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	468 if (get_bootp_option( bootp, TAG_DHCP_REBIND_TIME, &tag, &length ))
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	469 then = (cyg_uint64)(ntohl(tag));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	470 else
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	471 then = expiry_then - expiry_then/4;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	472 then *= 1000000000; // into nS - we know there is room in a tick_count_t
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	473 then = (then / resolution.dividend) * resolution.divisor; // into system ticks
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	474 lease->t2 = now + then;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	475
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	476 length = sizeof(tag);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	477 if (get_bootp_option( bootp, TAG_DHCP_RENEWAL_TIME, &tag, &length ))
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	478 then = (cyg_uint64)(ntohl(tag));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	479 else
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	480 then = expiry_then/2;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	481 then *= 1000000000; // into nS - we know there is room in a tick_count_t
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	482 then = (then / resolution.dividend) * resolution.divisor; // into system ticks
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	483 lease->t1 = now + then;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	484
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	485 #if 0 // for testing this mechanism
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	486 lease->expiry = now + 5000; // 1000 here makes for failure in the DHCP test
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	487 lease->t2 = now + 3500;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	488 lease->t1 = now + 2500;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	489 #endif
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	490
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	491 #ifdef CYGDBG_NET_DHCP_CHATTER
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	492 diag_printf("new_lease:\n");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	493 diag_printf(" expiry = %d\n",lease->expiry);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	494 diag_printf(" t1 = %d\n",lease->t1);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	495 diag_printf(" t2 = %d\n",lease->t2);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	496 #endif
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	497
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	498 lease->next = DHCP_LEASE_T1;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	499
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	500 cyg_alarm_initialize( lease->alarm, lease->t1, 0 );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	501 cyg_alarm_enable( lease->alarm );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	502 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	503
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	504 // ------------------------------------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	505 // Set all the tags we want to use when sending a packet.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	506 // This has expanded to a large, explicit set to interwork better
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	507 // with a variety of DHCP servers.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	508
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	509 static void set_default_dhcp_tags( struct bootp *xmit )
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	510 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	511 // Explicitly request full set of params that are default for LINUX
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	512 // dhcp servers, but not default for others. This is rather arbitrary,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	513 // but it preserves behaviour for people using those servers.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	514 // Perhaps configury of this set will be needed in future?
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	515 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	516 // Here's the set:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	517 static cyg_uint8 req_list[] = {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	518 #ifdef CYGOPT_NET_DHCP_PARM_REQ_LIST_REPLACE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	519 CYGOPT_NET_DHCP_PARM_REQ_LIST_REPLACE ,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	520 #else
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	521 TAG_DHCP_SERVER_ID , // DHCP server id: 10.16.19.66
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	522 TAG_DHCP_LEASE_TIME , // DHCP time 51: 60
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	523 TAG_DHCP_RENEWAL_TIME , // DHCP time 58: 30
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	524 TAG_DHCP_REBIND_TIME , // DHCP time 59: 52
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	525 TAG_SUBNET_MASK , // subnet mask: 255.255.255.0
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	526 TAG_GATEWAY , // gateway: 10.16.19.66
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	527 TAG_DOMAIN_SERVER , // domain server: 10.16.19.66
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	528 TAG_DOMAIN_NAME , // domain name: hmt10.cambridge.redhat.com
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	529 TAG_IP_BROADCAST , // IP broadcast: 10.16.19.255
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	530 #endif
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	531 #ifdef CYGOPT_NET_DHCP_PARM_REQ_LIST_ADDITIONAL
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	532 CYGOPT_NET_DHCP_PARM_REQ_LIST_ADDITIONAL ,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	533 #endif
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	534 };
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	535
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	536 if ( req_list[0] ) // So that one may easily turn it all off by configury
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	537 set_variable_tag( xmit, TAG_DHCP_PARM_REQ_LIST,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	538 &req_list[0], sizeof( req_list ) );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	539
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	540 // Explicitly specify our max message size.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	541 set_fixed_tag( xmit, TAG_DHCP_MAX_MSGSZ, BP_MINPKTSZ, 2 );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	542 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	543
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	544 // ------------------------------------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	545 // the DHCP state machine - this does all the work
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	546
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	547 int
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	548 do_dhcp(const char intf, struct bootp res,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	549 cyg_uint8 pstate, struct dhcp_lease lease)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	550 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	551 struct ifreq ifr;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	552 struct sockaddr_in cli_addr, broadcast_addr, server_addr, rx_addr;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	553 int s, addrlen;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	554 int one = 1;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	555 unsigned char mincookie[] = {99,130,83,99,255} ;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	556 struct timeval tv;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	557 struct timeout_state timeout_scratch;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	558 cyg_uint8 oldstate = *pstate;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	559 cyg_uint8 msgtype = 0, seen_bootp_reply = 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	560 unsigned int length;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	561
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	562 cyg_uint32 xid;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	563
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	564 #define CHECK_XID() ( /* and other details */ \
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	565 received->bp_xid != xid \|\| /* not the same transaction */ \
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	566 received->bp_htype != xmit->bp_htype \|\| /* not the same ESA type */ \
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	567 received->bp_hlen != xmit->bp_hlen \|\| /* not the same length */ \
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	568 bcmp( &received->bp_chaddr, &xmit->bp_chaddr, xmit->bp_hlen ) \
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	569 )
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	570
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	571 // IMPORTANT: xmit is the same as res throughout this; *received is a
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	572 // scratch buffer for reception; its contents are always copied to res
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	573 // when we are happy with them. So we always transmit from the
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	574 // existing state.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	575 struct bootp rx_local;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	576 struct bootp *received = &rx_local;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	577 struct bootp *xmit = res;
229 ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	578 struct bootp xmit2;
216 da643977bd0a Improve DHCP reply handling gthomas parents: 211 diff changeset	579 int xlen;
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	580
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	581 // First, get a socket on the interface in question. But Zeroth, if
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	582 // needs be, bring it to the half-up broadcast only state if needs be.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	583
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	584 if ( DHCPSTATE_INIT == oldstate
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	585 \|\| DHCPSTATE_FAILED == oldstate
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	586 \|\| 0 == oldstate ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	587 // either explicit init state or the beginning of time or retry
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	588 if ( ! bring_half_up( intf, &ifr ) )
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	589 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	590
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	591 *pstate = DHCPSTATE_INIT;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	592 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	593
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	594 s = socket(AF_INET, SOCK_DGRAM, 0);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	595 if (s < 0) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	596 perror("socket");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	597 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	598 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	599
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	600 if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, &one, sizeof(one))) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	601 perror("setsockopt");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	602 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	603 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	604
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	605 memset((char *) &cli_addr, 0, sizeof(cli_addr));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	606 cli_addr.sin_family = AF_INET;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	607 cli_addr.sin_len = sizeof(cli_addr);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	608 cli_addr.sin_addr.s_addr = htonl(INADDR_ANY);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	609 cli_addr.sin_port = htons(IPPORT_BOOTPC);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	610
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	611 memset((char *) &broadcast_addr, 0, sizeof(broadcast_addr));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	612 broadcast_addr.sin_family = AF_INET;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	613 broadcast_addr.sin_len = sizeof(broadcast_addr);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	614 broadcast_addr.sin_addr.s_addr = htonl(INADDR_BROADCAST);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	615 broadcast_addr.sin_port = htons(IPPORT_BOOTPS);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	616
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	617 memset((char *) &server_addr, 0, sizeof(server_addr));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	618 server_addr.sin_family = AF_INET;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	619 server_addr.sin_len = sizeof(server_addr);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	620 server_addr.sin_addr.s_addr = htonl(INADDR_BROADCAST); // overwrite later
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	621 server_addr.sin_port = htons(IPPORT_BOOTPS);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	622
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	623 if(bind(s, (struct sockaddr *) &cli_addr, sizeof(cli_addr)) < 0) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	624 perror("bind error");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	625 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	626 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	627 if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one))) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	628 perror("setsockopt SO_REUSEADDR");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	629 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	630 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	631 if (setsockopt(s, SOL_SOCKET, SO_REUSEPORT, &one, sizeof(one))) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	632 perror("setsockopt SO_REUSEPORT");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	633 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	634 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	635
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	636 // Now, we can launch into the DHCP state machine. I think this will
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	637 // be the neatest way to do it; it returns from within the switch arms
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	638 // when all is well, or utterly failed.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	639
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	640 reset_timeout( &tv, &timeout_scratch );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	641
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	642 // Choose a new XID: first get the ESA as a basis:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	643 strcpy(&ifr.ifr_name[0], intf);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	644 if (ioctl(s, SIOCGIFHWADDR, &ifr) < 0) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	645 perror("SIOCGIFHWADDR 2");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	646 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	647 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	648
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	649 // Choose from scratch depending on ifr_hwaddr...[]
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	650 xid = ifr.ifr_hwaddr.sa_data[5];
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	651 xid \|= (ifr.ifr_hwaddr.sa_data[4]) << 8;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	652 xid \|= (ifr.ifr_hwaddr.sa_data[3]) << 16;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	653 xid \|= (ifr.ifr_hwaddr.sa_data[2]) << 24;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	654 xid ^= (cyg_arc4random() & 0xffff0000);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	655
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	656 // Avoid adjacent ESAs colliding by increment
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	657 #define NEW_XID(_xid) CYG_MACRO_START (_xid)+= 0x10000; CYG_MACRO_END
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	658
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	659 while ( 1 ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	660
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	661 // If we are active rather than in the process of shutting down,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	662 // check for any lease expiry every time round, so that alarms
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	663 // can change the course of events even when already renewing,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	664 // for example.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	665 if ( DHCPSTATE_DO_RELEASE != *pstate
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	666 && DHCPSTATE_NOTBOUND != *pstate
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	667 && DHCPSTATE_FAILED != *pstate ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	668 cyg_uint8 lease_state;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	669
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	670 cyg_scheduler_lock();
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	671 lease_state = lease->which;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	672 lease->which = 0; // flag that we have noticed it
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	673 cyg_scheduler_unlock();
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	674
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	675 if ( lease_state & DHCP_LEASE_EX ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	676 // then the lease has expired completely!
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	677 *pstate = DHCPSTATE_NOTBOUND;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	678 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	679 else if ( lease_state & DHCP_LEASE_T2 ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	680 // Time to renew
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	681 reset_timeout( &tv, &timeout_scratch ); // next conversation
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	682 *pstate = DHCPSTATE_REBINDING;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	683 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	684 else if ( lease_state & DHCP_LEASE_T1 ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	685 // Time to renew
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	686 reset_timeout( &tv, &timeout_scratch ); // next conversation
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	687 *pstate = DHCPSTATE_RENEWING;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	688 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	689 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	690
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	691 switch ( *pstate ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	692
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	693 case DHCPSTATE_INIT:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	694
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	695 // Send the DHCPDISCOVER packet
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	696
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	697 // Fill in the BOOTP request - DHCPDISCOVER packet
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	698 bzero(xmit, sizeof(*xmit));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	699 xmit->bp_op = BOOTREQUEST;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	700 xmit->bp_htype = HTYPE_ETHERNET;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	701 xmit->bp_hlen = IFHWADDRLEN;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	702 xmit->bp_xid = xid;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	703 xmit->bp_secs = 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	704 xmit->bp_flags = htons(0x8000); // BROADCAST FLAG
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	705 bcopy(ifr.ifr_hwaddr.sa_data, &xmit->bp_chaddr, xmit->bp_hlen);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	706 bcopy(mincookie, xmit->bp_vend, sizeof(mincookie));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	707
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	708 // remove the next line to test ability to handle bootp packets.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	709 set_fixed_tag( xmit, TAG_DHCP_MESS_TYPE, DHCPDISCOVER, 1 );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	710 // Set all the tags we want to use when sending a packet
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	711 set_default_dhcp_tags( xmit );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	712
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	713 #ifdef CYGDBG_NET_DHCP_CHATTER
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	714 diag_printf( "---------DHCPSTATE_INIT sending:\n" );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	715 show_bootp( intf, xmit );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	716 #endif
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	717 if(sendto(s, xmit, dhcp_size_for_send(xmit), 0,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	718 (struct sockaddr *)&broadcast_addr, sizeof(broadcast_addr)) < 0) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	719 *pstate = DHCPSTATE_FAILED;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	720 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	721 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	722
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	723 seen_bootp_reply = 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	724 *pstate = DHCPSTATE_SELECTING;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	725 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	726
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	727 case DHCPSTATE_SELECTING:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	728 // This is a separate state so that we can listen again
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	729 // without retransmitting.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	730
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	731 // listen for the DHCPOFFER reply
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	732
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	733 setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	734
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	735 addrlen = sizeof(rx_addr);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	736 if (recvfrom(s, received, sizeof(struct bootp), 0,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	737 (struct sockaddr *)&rx_addr, &addrlen) < 0) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	738 // No packet arrived (this time)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	739 if ( seen_bootp_reply ) { // then already have a bootp reply
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	740 // Save the good packet in *xmit
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	741 bcopy( received, xmit, dhcp_size(received) );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	742 *pstate = DHCPSTATE_BOOTP_FALLBACK;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	743 NEW_XID( xid ); // Happy to advance, so new XID
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	744 reset_timeout( &tv, &timeout_scratch );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	745 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	746 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	747 // go to the next larger timeout and re-send:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	748 if ( ! next_timeout( &tv, &timeout_scratch ) ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	749 *pstate = DHCPSTATE_FAILED;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	750 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	751 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	752 *pstate = DHCPSTATE_INIT; // to retransmit
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	753 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	754 }
229 ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	755 // Check for well-formed packet with correct termination (not truncated)
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	756 length = dhcp_size( received );
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	757 #ifdef CYGDBG_NET_DHCP_CHATTER
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	758 diag_printf( "---------DHCPSTATE_SELECTING received:\n" );
229 ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	759 if ( length <= 0 )
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	760 diag_printf( "WARNING! malformed or truncated packet\n" );
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	761 diag_printf( "...rx_addr is family %d, addr %08x, port %d\n",
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	762 rx_addr.sin_family,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	763 rx_addr.sin_addr.s_addr,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	764 rx_addr.sin_port );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	765 show_bootp( intf, received );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	766 #endif
229 ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	767 if ( length <= 0 )
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	768 break;
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	769 if ( CHECK_XID() ) // XID and ESA matches?
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	770 break; // listen again...
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	771
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	772 if ( 0 == received->bp_siaddr.s_addr ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	773 // then fill in from the options...
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	774 length = sizeof(received->bp_siaddr.s_addr);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	775 get_bootp_option( received, TAG_DHCP_SERVER_ID,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	776 &received->bp_siaddr.s_addr,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	777 &length);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	778 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	779
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	780 // see if it was a DHCP reply or a bootp reply; it could be
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	781 // either.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	782 length = sizeof(msgtype);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	783 if ( get_bootp_option( received, TAG_DHCP_MESS_TYPE, &msgtype,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	784 &length) ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	785 if ( DHCPOFFER == msgtype ) { // all is well
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	786 // Save the good packet in *xmit
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	787 bcopy( received, xmit, dhcp_size(received) );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	788 // we like the packet, so reset the timeout for next time
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	789 reset_timeout( &tv, &timeout_scratch );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	790 *pstate = DHCPSTATE_REQUESTING;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	791 NEW_XID( xid ); // Happy to advance, so new XID
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	792 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	793 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	794 else // No TAG_DHCP_MESS_TYPE entry so it's a bootp reply
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	795 seen_bootp_reply = 1; // (keep the bootp packet in received)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	796
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	797 // If none of the above state changes occurred, we got a packet
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	798 // that "should not happen", OR we have a bootp reply in our
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	799 // hand; so listen again with the same timeout, without
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	800 // retrying the send, in the hope of getting a DHCP reply.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	801 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	802
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	803 case DHCPSTATE_REQUESTING:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	804 // Just send what you got with a DHCPREQUEST in the message type.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	805 // then wait for an ACK in DHCPSTATE_REQUEST_RECV.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	806
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	807 // Fill in the BOOTP request - DHCPREQUEST packet
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	808 xmit->bp_xid = xid;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	809 xmit->bp_op = BOOTREQUEST;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	810 xmit->bp_flags = htons(0x8000); // BROADCAST FLAG
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	811
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	812 set_fixed_tag( xmit, TAG_DHCP_MESS_TYPE, DHCPREQUEST, 1 );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	813 // Set all the tags we want to use when sending a packet
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	814 set_default_dhcp_tags( xmit );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	815 // And this will be a new one:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	816 set_fixed_tag( xmit, TAG_DHCP_REQ_IP, ntohl(xmit->bp_yiaddr.s_addr), 4 );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	817
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	818 #ifdef CYGDBG_NET_DHCP_CHATTER
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	819 diag_printf( "---------DHCPSTATE_REQUESTING sending:\n" );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	820 show_bootp( intf, xmit );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	821 #endif
211 6eb55882e01c Merge from eCos master repository on 2002-05-29-16:32:18-BST jlarmour parents: 208 diff changeset	822 // Send back a [modified] copy. Note that some fields are explicitly
6eb55882e01c Merge from eCos master repository on 2002-05-29-16:32:18-BST jlarmour parents: 208 diff changeset	823 // cleared, as per the RFC. We need the copy because these fields are
229 ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	824 // still useful to us (and currently stored in the 'result' structure)
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	825 xlen = dhcp_size_for_send( xmit );
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	826 bcopy( xmit, &xmit2, xlen );
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	827 xmit2.bp_yiaddr.s_addr = xmit2.bp_siaddr.s_addr = xmit2.bp_giaddr.s_addr = 0;
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	828 xmit2.bp_hops = 0;
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	829 if(sendto(s, &xmit2, xlen, 0,
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	830 (struct sockaddr *)&broadcast_addr, sizeof(broadcast_addr)) < 0) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	831 *pstate = DHCPSTATE_FAILED;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	832 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	833 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	834
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	835 *pstate = DHCPSTATE_REQUEST_RECV;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	836 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	837
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	838 case DHCPSTATE_REQUEST_RECV:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	839 // wait for an ACK or a NACK - retry by going back to
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	840 // DHCPSTATE_REQUESTING; NACK means go back to INIT.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	841
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	842 setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	843
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	844 addrlen = sizeof(rx_addr);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	845 if (recvfrom(s, received, sizeof(struct bootp), 0,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	846 (struct sockaddr *)&rx_addr, &addrlen) < 0) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	847 // No packet arrived
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	848 // go to the next larger timeout and re-send:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	849 if ( ! next_timeout( &tv, &timeout_scratch ) ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	850 *pstate = DHCPSTATE_FAILED;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	851 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	852 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	853 *pstate = DHCPSTATE_REQUESTING;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	854 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	855 }
229 ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	856 // Check for well-formed packet with correct termination (not truncated)
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	857 length = dhcp_size( received );
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	858 #ifdef CYGDBG_NET_DHCP_CHATTER
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	859 diag_printf( "---------DHCPSTATE_REQUEST_RECV received:\n" );
229 ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	860 if ( length <= 0 )
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	861 diag_printf( "WARNING! malformed or truncated packet\n" );
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	862 diag_printf( "...rx_addr is family %d, addr %08x, port %d\n",
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	863 rx_addr.sin_family,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	864 rx_addr.sin_addr.s_addr,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	865 rx_addr.sin_port );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	866 show_bootp( intf, received );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	867 #endif
229 ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	868 if ( length <= 0 )
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	869 break;
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	870 if ( CHECK_XID() ) // not the same transaction;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	871 break; // listen again...
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	872
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	873 if ( 0 == received->bp_siaddr.s_addr ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	874 // then fill in from the options...
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	875 length = sizeof(received->bp_siaddr.s_addr );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	876 get_bootp_option( received, TAG_DHCP_SERVER_ID,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	877 &received->bp_siaddr.s_addr,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	878 &length);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	879 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	880
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	881 // check it was a DHCP reply
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	882 length = sizeof(msgtype);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	883 if ( get_bootp_option( received, TAG_DHCP_MESS_TYPE, &msgtype,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	884 &length) ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	885 if ( DHCPACK == msgtype // Same offer & server?
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	886 && received->bp_yiaddr.s_addr == xmit->bp_yiaddr.s_addr
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	887 && received->bp_siaddr.s_addr == xmit->bp_siaddr.s_addr) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	888 // we like the packet, so reset the timeout for next time
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	889 reset_timeout( &tv, &timeout_scratch );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	890 // Record the new lease and set up timers &c
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	891 new_lease( received, lease );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	892 *pstate = DHCPSTATE_BOUND;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	893 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	894 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	895 if ( DHCPNAK == msgtype // Same server?
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	896 && received->bp_siaddr.s_addr == xmit->bp_siaddr.s_addr) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	897 // we're bounced!
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	898 *pstate = DHCPSTATE_INIT; // So back the start of the rigmarole.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	899 NEW_XID( xid ); // Unhappy to advance, so new XID
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	900 reset_timeout( &tv, &timeout_scratch );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	901 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	902 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	903 // otherwise it's something else, maybe another offer, or a bogus
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	904 // NAK from someone we are not asking!
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	905 // Just listen again, which implicitly discards it.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	906 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	907 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	908
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	909 case DHCPSTATE_BOUND:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	910
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	911 // We are happy now, we have our address.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	912
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	913 // All done with socket
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	914 close(s);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	915
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	916 // Re-initialize the interface with the new state
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	917 if ( DHCPSTATE_BOUND != oldstate ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	918 // Then need to go down and up
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	919 do_dhcp_down_net( intf, res, &oldstate, lease ); // oldstate used
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	920 if ( 0 != oldstate ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	921 // Then not called from init_all_network_interfaces()
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	922 // so we must initialize the interface ourselves
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	923 if (!init_net(intf, res)) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	924 do_dhcp_down_net( intf, res, pstate, lease );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	925 *pstate = DHCPSTATE_FAILED;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	926 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	927 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	928 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	929 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	930
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	931 // Otherwise, nothing whatsoever to do...
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	932 return true;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	933
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	934 case DHCPSTATE_RENEWING:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	935 // Just send what you got with a DHCPREQUEST in the message
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	936 // type UNICAST straight to the server. Then wait for an ACK.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	937
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	938 // Fill in the BOOTP request - DHCPREQUEST packet
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	939 xmit->bp_xid = xid;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	940 xmit->bp_op = BOOTREQUEST;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	941 xmit->bp_flags = htons(0); // No BROADCAST FLAG
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	942 // Use the client address here:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	943 xmit->bp_ciaddr.s_addr = xmit->bp_yiaddr.s_addr;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	944
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	945 set_fixed_tag( xmit, TAG_DHCP_MESS_TYPE, DHCPREQUEST, 1 );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	946 // These must not be set in this context
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	947 unset_tag( xmit, TAG_DHCP_REQ_IP );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	948 unset_tag( xmit, TAG_DHCP_SERVER_ID );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	949 // Set all the tags we want to use when sending a packet
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	950 set_default_dhcp_tags( xmit );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	951
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	952 // Set unicast address to server
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	953 server_addr.sin_addr.s_addr = res->bp_siaddr.s_addr;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	954
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	955 #ifdef CYGDBG_NET_DHCP_CHATTER
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	956 diag_printf( "---------DHCPSTATE_RENEWING sending:\n" );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	957 diag_printf( "UNICAST to family %d, addr %08x, port %d\n",
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	958 server_addr.sin_family,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	959 server_addr.sin_addr.s_addr,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	960 server_addr.sin_port );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	961 show_bootp( intf, xmit );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	962 #endif
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	963
211 6eb55882e01c Merge from eCos master repository on 2002-05-29-16:32:18-BST jlarmour parents: 208 diff changeset	964 // Send back a [modified] copy. Note that some fields are explicitly
6eb55882e01c Merge from eCos master repository on 2002-05-29-16:32:18-BST jlarmour parents: 208 diff changeset	965 // cleared, as per the RFC. We need the copy because these fields are
6eb55882e01c Merge from eCos master repository on 2002-05-29-16:32:18-BST jlarmour parents: 208 diff changeset	966 // still useful to us (and currently stored in the 'result' structure)
216 da643977bd0a Improve DHCP reply handling gthomas parents: 211 diff changeset	967 xlen = dhcp_size_for_send(xmit);
229 ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	968 bcopy( xmit, &xmit2, xlen );
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	969 xmit2.bp_yiaddr.s_addr = xmit2.bp_siaddr.s_addr = xmit2.bp_giaddr.s_addr = 0;
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	970 xmit2.bp_hops = 0;
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	971 if(sendto(s, &xmit2, xlen, 0,
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	972 // UNICAST address of the server:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	973 (struct sockaddr *)&server_addr,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	974 sizeof(server_addr)) < 0) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	975 *pstate = DHCPSTATE_FAILED;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	976 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	977 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	978
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	979 *pstate = DHCPSTATE_RENEW_RECV;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	980 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	981
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	982 case DHCPSTATE_RENEW_RECV:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	983 // wait for an ACK or a NACK - retry by going back to
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	984 // DHCPSTATE_RENEWING; NACK means go to NOTBOUND.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	985 // No answer means just wait for T2, to broadcast.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	986
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	987 setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	988
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	989 addrlen = sizeof(rx_addr);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	990 if (recvfrom(s, received, sizeof(struct bootp), 0,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	991 (struct sockaddr *)&rx_addr, &addrlen) < 0) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	992 // No packet arrived
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	993 // go to the next larger timeout and re-send:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	994 if ( ! next_timeout( &tv, &timeout_scratch ) ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	995 // If we timed out completely, just give up until T2
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	996 // expires - retain the lease meanwhile. The normal
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	997 // lease mechanism will invoke REBINDING as and when
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	998 // necessary.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	999 *pstate = DHCPSTATE_BOUND;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1000 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1001 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1002 *pstate = DHCPSTATE_RENEWING;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1003 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1004 }
229 ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1005 // Check for well-formed packet with correct termination (not truncated)
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1006 length = dhcp_size( received );
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1007 #ifdef CYGDBG_NET_DHCP_CHATTER
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1008 diag_printf( "---------DHCPSTATE_RENEW_RECV received:\n" );
229 ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1009 if ( length <= 0 )
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1010 diag_printf( "WARNING! malformed or truncated packet\n" );
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1011 diag_printf( "...rx_addr is family %d, addr %08x, port %d\n",
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1012 rx_addr.sin_family,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1013 rx_addr.sin_addr.s_addr,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1014 rx_addr.sin_port );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1015 show_bootp( intf, received );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1016 #endif
229 ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1017 if ( length <= 0 )
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1018 break;
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1019 if ( CHECK_XID() ) // not the same transaction;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1020 break; // listen again...
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1021
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1022 if ( 0 == received->bp_siaddr.s_addr ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1023 // then fill in from the options...
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1024 length = sizeof(received->bp_siaddr.s_addr);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1025 get_bootp_option( received, TAG_DHCP_SERVER_ID,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1026 &received->bp_siaddr.s_addr,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1027 &length);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1028 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1029
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1030 // check it was a DHCP reply
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1031 length = sizeof(msgtype);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1032 if ( get_bootp_option( received, TAG_DHCP_MESS_TYPE, &msgtype,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1033 &length) ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1034 if ( DHCPACK == msgtype // Same offer?
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1035 && received->bp_yiaddr.s_addr == xmit->bp_yiaddr.s_addr) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1036 // we like the packet, so reset the timeout for next time
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1037 reset_timeout( &tv, &timeout_scratch );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1038 // Record the new lease and set up timers &c
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1039 new_lease( received, lease );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1040 *pstate = DHCPSTATE_BOUND;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1041 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1042 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1043 if ( DHCPNAK == msgtype ) { // we're bounced!
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1044 *pstate = DHCPSTATE_NOTBOUND; // So quit out.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1045 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1046 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1047 // otherwise it's something else, maybe another offer.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1048 // Just listen again, which implicitly discards it.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1049 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1050 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1051
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1052 case DHCPSTATE_REBINDING:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1053 // Just send what you got with a DHCPREQUEST in the message type.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1054 // Then wait for an ACK. This one is BROADCAST.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1055
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1056 // Fill in the BOOTP request - DHCPREQUEST packet
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1057 xmit->bp_xid = xid;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1058 xmit->bp_op = BOOTREQUEST;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1059 xmit->bp_flags = htons(0); // no BROADCAST FLAG
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1060 // Use the client address here:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1061 xmit->bp_ciaddr.s_addr = xmit->bp_yiaddr.s_addr;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1062
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1063 set_fixed_tag( xmit, TAG_DHCP_MESS_TYPE, DHCPREQUEST, 1 );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1064 // These must not be set in this context
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1065 unset_tag( xmit, TAG_DHCP_REQ_IP );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1066 unset_tag( xmit, TAG_DHCP_SERVER_ID );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1067 // Set all the tags we want to use when sending a packet
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1068 set_default_dhcp_tags( xmit );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1069
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1070 #ifdef CYGDBG_NET_DHCP_CHATTER
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1071 diag_printf( "---------DHCPSTATE_REBINDING sending:\n" );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1072 show_bootp( intf, xmit );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1073 #endif
211 6eb55882e01c Merge from eCos master repository on 2002-05-29-16:32:18-BST jlarmour parents: 208 diff changeset	1074 // Send back a [modified] copy. Note that some fields are explicitly
6eb55882e01c Merge from eCos master repository on 2002-05-29-16:32:18-BST jlarmour parents: 208 diff changeset	1075 // cleared, as per the RFC. We need the copy because these fields are
6eb55882e01c Merge from eCos master repository on 2002-05-29-16:32:18-BST jlarmour parents: 208 diff changeset	1076 // still useful to us (and currently stored in the 'result' structure)
229 ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1077 xlen = dhcp_size_for_send( xmit );
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1078 bcopy( xmit, &xmit2, xlen );
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1079 xmit2.bp_yiaddr.s_addr = xmit2.bp_siaddr.s_addr = xmit2.bp_giaddr.s_addr = 0;
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1080 xmit2.bp_hops = 0;
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1081 if(sendto(s, &xmit2, xlen, 0,
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1082 (struct sockaddr *)&broadcast_addr, sizeof(broadcast_addr)) < 0) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1083 *pstate = DHCPSTATE_FAILED;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1084 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1085 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1086
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1087 *pstate = DHCPSTATE_REBIND_RECV;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1088 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1089
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1090 case DHCPSTATE_REBIND_RECV:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1091 // wait for an ACK or a NACK - retry by going back to
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1092 // DHCPSTATE_REBINDING; NACK means go to NOTBOUND.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1093 // No answer means just wait for expiry; we tried!
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1094
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1095 setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1096
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1097 addrlen = sizeof(rx_addr);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1098 if (recvfrom(s, received, sizeof(struct bootp), 0,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1099 (struct sockaddr *)&rx_addr, &addrlen) < 0) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1100 // No packet arrived
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1101 // go to the next larger timeout and re-send:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1102 if ( ! next_timeout( &tv, &timeout_scratch ) ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1103 // If we timed out completely, just give up until EX
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1104 // expires - retain the lease meanwhile. The normal
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1105 // lease mechanism will invoke NOTBOUND state as and
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1106 // when necessary.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1107 *pstate = DHCPSTATE_BOUND;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1108 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1109 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1110 *pstate = DHCPSTATE_REBINDING;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1111 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1112 }
229 ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1113 // Check for well-formed packet with correct termination (not truncated)
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1114 length = dhcp_size( received );
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1115 #ifdef CYGDBG_NET_DHCP_CHATTER
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1116 diag_printf( "---------DHCPSTATE_REBIND_RECV received:\n" );
229 ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1117 if ( length <= 0 )
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1118 diag_printf( "WARNING! malformed or truncated packet\n" );
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1119 diag_printf( "...rx_addr is family %d, addr %08x, port %d\n",
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1120 rx_addr.sin_family,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1121 rx_addr.sin_addr.s_addr,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1122 rx_addr.sin_port );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1123 show_bootp( intf, received );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1124 #endif
229 ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1125 if ( length <= 0 )
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1126 break;
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1127 if ( CHECK_XID() ) // not the same transaction;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1128 break; // listen again...
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1129
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1130 if ( 0 == received->bp_siaddr.s_addr ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1131 // then fill in from the options...
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1132 int length = sizeof(received->bp_siaddr.s_addr );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1133 get_bootp_option( received, TAG_DHCP_SERVER_ID,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1134 &received->bp_siaddr.s_addr,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1135 &length);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1136 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1137
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1138 // check it was a DHCP reply
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1139 length = sizeof(msgtype);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1140 if ( get_bootp_option( received, TAG_DHCP_MESS_TYPE, &msgtype,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1141 &length) ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1142 if ( DHCPACK == msgtype // Same offer?
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1143 && received->bp_yiaddr.s_addr == xmit->bp_yiaddr.s_addr) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1144 // we like the packet, so reset the timeout for next time
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1145 reset_timeout( &tv, &timeout_scratch );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1146 // Record the new lease and set up timers &c
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1147 new_lease( received, lease );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1148 *pstate = DHCPSTATE_BOUND;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1149 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1150 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1151 else if ( DHCPNAK == msgtype ) { // we're bounced!
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1152 *pstate = DHCPSTATE_NOTBOUND; // So back the start of the rigmarole.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1153 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1154 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1155 // otherwise it's something else, maybe another offer.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1156 // Just listen again, which implicitly discards it.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1157 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1158 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1159
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1160 case DHCPSTATE_BOOTP_FALLBACK:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1161 // All done with socket
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1162 close(s);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1163 // And no lease should have become active, but JIC
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1164 no_lease( lease );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1165 // Re-initialize the interface with the new state
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1166 if ( DHCPSTATE_BOOTP_FALLBACK != oldstate ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1167 // Then need to go down and up
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1168 do_dhcp_down_net( intf, res, &oldstate, lease ); // oldstate used
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1169 if ( 0 != oldstate ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1170 // Then not called from init_all_network_interfaces()
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1171 // so we must initialize the interface ourselves
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1172 if (!init_net(intf, res)) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1173 do_dhcp_down_net( intf, res, pstate, lease );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1174 *pstate = DHCPSTATE_FAILED;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1175 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1176 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1177 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1178 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1179
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1180 // Otherwise, nothing whatsoever to do...
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1181 return true;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1182
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1183 case DHCPSTATE_NOTBOUND:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1184 // All done with socket
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1185 close(s);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1186 // No lease active
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1187 no_lease( lease );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1188 // Leave interface up so app can tidy.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1189 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1190
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1191 case DHCPSTATE_FAILED:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1192 // All done with socket
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1193 close(s);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1194 // No lease active
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1195 no_lease( lease );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1196 // Unconditionally down the interface.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1197 do_dhcp_down_net( intf, res, &oldstate, lease );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1198 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1199
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1200 case DHCPSTATE_DO_RELEASE:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1201 // We have been forced here by external means, to release the
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1202 // lease for graceful shutdown.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1203
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1204 // Just send what you got with a DHCPRELEASE in the message
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1205 // type UNICAST straight to the server. No ACK. Then go to
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1206 // NOTBOUND state.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1207 NEW_XID( xid );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1208 xmit->bp_xid = xid;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1209 xmit->bp_op = BOOTREQUEST;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1210 xmit->bp_flags = htons(0); // no BROADCAST FLAG
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1211 // Use the client address here:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1212 xmit->bp_ciaddr.s_addr = xmit->bp_yiaddr.s_addr;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1213
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1214 set_fixed_tag( xmit, TAG_DHCP_MESS_TYPE, DHCPRELEASE, 1 );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1215
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1216 // Set unicast address to server
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1217 server_addr.sin_addr.s_addr = res->bp_siaddr.s_addr;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1218
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1219 #ifdef CYGDBG_NET_DHCP_CHATTER
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1220 diag_printf( "---------DHCPSTATE_DO_RELEASE sending:\n" );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1221 diag_printf( "UNICAST to family %d, addr %08x, port %d\n",
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1222 server_addr.sin_family,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1223 server_addr.sin_addr.s_addr,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1224 server_addr.sin_port );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1225 show_bootp( intf, xmit );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1226 #endif
211 6eb55882e01c Merge from eCos master repository on 2002-05-29-16:32:18-BST jlarmour parents: 208 diff changeset	1227 // Send back a [modified] copy. Note that some fields are explicitly
6eb55882e01c Merge from eCos master repository on 2002-05-29-16:32:18-BST jlarmour parents: 208 diff changeset	1228 // cleared, as per the RFC. We need the copy because these fields are
6eb55882e01c Merge from eCos master repository on 2002-05-29-16:32:18-BST jlarmour parents: 208 diff changeset	1229 // still useful to us (and currently stored in the 'result' structure)
229 ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1230 xlen = dhcp_size_for_send( xmit );
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1231 bcopy( xmit, &xmit2, xlen );
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1232 xmit2.bp_yiaddr.s_addr = xmit2.bp_siaddr.s_addr = xmit2.bp_giaddr.s_addr = 0;
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1233 xmit2.bp_hops = 0;
ff3465255c3a * src/dhcp_prot.c (_dhcp_copy): Remove. Unnecessary as we can never jlarmour parents: 216 diff changeset	1234 if(sendto(s, &xmit2, xlen, 0,
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1235 // UNICAST address of the server:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1236 (struct sockaddr *)&server_addr,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1237 sizeof(server_addr)) < 0) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1238 *pstate = DHCPSTATE_FAILED;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1239 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1240 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1241
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1242 *pstate = DHCPSTATE_NOTBOUND;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1243 break;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1244
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1245 default:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1246 no_lease( lease );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1247 close(s);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1248 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1249 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1250 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1251 /* NOTREACHED */
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1252 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1253 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1254
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1255 // ------------------------------------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1256 // Bring an interface down, failed to initialize it or lease is expired
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1257 // Also part of normal startup, bring down for proper reinitialization
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1258
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1259 int
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1260 do_dhcp_down_net(const char intf, struct bootp res,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1261 cyg_uint8 pstate, struct dhcp_lease lease)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1262 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1263 struct sockaddr_in *addrp;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1264 struct ifreq ifr;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1265 int s;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1266
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1267 // Ensure clean slate
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1268 cyg_route_reinit(); // Force any existing routes to be forgotten
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1269
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1270 s = socket(AF_INET, SOCK_DGRAM, 0);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1271 if (s < 0) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1272 perror("socket");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1273 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1274 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1275
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1276 addrp = (struct sockaddr_in *) &ifr.ifr_addr;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1277
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1278 // Remove any existing address
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1279 if ( DHCPSTATE_FAILED == *pstate
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1280 \|\| DHCPSTATE_INIT == *pstate
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1281 \|\| 0 == *pstate ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1282 // it was configured for broadcast only, "half-up"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1283 memset(addrp, 0, sizeof(*addrp));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1284 addrp->sin_family = AF_INET;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1285 addrp->sin_len = sizeof(*addrp);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1286 addrp->sin_port = 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1287 addrp->sin_addr.s_addr = INADDR_ANY;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1288 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1289 else {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1290 // get the specific address that was used
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1291 strcpy(ifr.ifr_name, intf);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1292 if (ioctl(s, SIOCGIFADDR, &ifr)) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1293 perror("SIOCGIFADDR 1");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1294 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1295 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1296 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1297
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1298 strcpy(ifr.ifr_name, intf);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1299 if (ioctl(s, SIOCDIFADDR, &ifr)) { /* delete IF addr */
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1300 perror("SIOCDIFADDR1");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1301 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1302
253 d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1303 #ifdef INET6
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1304 {
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1305 int s6;
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1306
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1307 s6 = socket(AF_INET6, SOCK_DGRAM, 0);
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1308 if (s6 < 0) {
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1309 perror("socket AF_INET6");
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1310 return false;
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1311 }
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1312 // Now delete the ipv6 addr
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1313 strcpy(ifr.ifr_name, intf);
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1314 if (ioctl(s6, SIOCGLIFADDR, &ifr)) {
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1315 perror("SIOCGIFADDR_IN6 1");
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1316 return false;
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1317 }
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1318
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1319 strcpy(ifr.ifr_name, intf);
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1320 if (ioctl(s6, SIOCDLIFADDR, &ifr)) { /* delete IF addr */
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1321 perror("SIOCDIFADDR_IN61");
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1322 }
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1323 close(s6);
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1324 }
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1325 #endif /* IP6 */
d364b93024e5 From Red Hat - fix problem with IPv6 when using DHCP. gthomas parents: 235 diff changeset	1326
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1327 // Shut down interface so it can be reinitialized
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1328 ifr.ifr_flags &= ~(IFF_UP \| IFF_RUNNING);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1329 if (ioctl(s, SIOCSIFFLAGS, &ifr)) { /* set ifnet flags */
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1330 perror("SIOCSIFFLAGS down");
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1331 return false;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1332 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1333
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1334 // All done with socket
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1335 close(s);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1336
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1337 if ( 0 != *pstate ) // preserve initial state
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1338 *pstate = DHCPSTATE_INIT;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1339
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1340 return true;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1341 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1342
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1343 // ------------------------------------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1344 // Release (relinquish) a leased address - if we have one - and bring down
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1345 // the interface.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1346 int
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1347 do_dhcp_release(const char intf, struct bootp res,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1348 cyg_uint8 pstate, struct dhcp_lease lease)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1349 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1350 if ( 0 != *pstate
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1351 && DHCPSTATE_INIT != *pstate
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1352 && DHCPSTATE_NOTBOUND != *pstate
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1353 && DHCPSTATE_FAILED != *pstate
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1354 && DHCPSTATE_BOOTP_FALLBACK != *pstate ) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1355 *pstate = DHCPSTATE_DO_RELEASE;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1356 do_dhcp( intf, res, pstate, lease ); // to send the release packet
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1357 cyg_thread_delay( 100 ); // to let it leave the building
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1358 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1359 return true;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1360 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1361
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1362 // ------------------------------------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1363
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1364 #endif // CYGPKG_NET_DHCP
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1365
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1366 // EOF dhcp_prot.c

Mercurial > ecos

annotate packages/net/common/current/src/dhcp_prot.c @ 490:7c34839e7e97