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ipxe/src/usr/dhcpmgmt.c
Michael Brown 03f0c23f8b [ipoib] Expose Ethernet-compatible eIPoIB link-layer addresses and headers
Almost all clients of the raw-packet interfaces (UNDI and SNP) can
handle only Ethernet link layers.  Expose an Ethernet-compatible link
layer to local clients, while remaining compatible with IPoIB on the
wire.  This requires manipulation of ARP (but not DHCP) packets within
the IPoIB driver.

This is ugly, but it's the only viable way to allow IPoIB devices to
be driven via the raw-packet interfaces.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2012-08-31 21:22:59 +01:00

74 lines
1.9 KiB
C

/*
* Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <ipxe/netdevice.h>
#include <ipxe/dhcp.h>
#include <ipxe/monojob.h>
#include <ipxe/process.h>
#include <usr/ifmgmt.h>
#include <usr/dhcpmgmt.h>
#define LINK_WAIT_MS 15000
/** @file
*
* DHCP management
*
*/
int dhcp ( struct net_device *netdev ) {
int rc;
/* Check we can open the interface first */
if ( ( rc = ifopen ( netdev ) ) != 0 )
return rc;
/* Wait for link-up */
if ( ( rc = iflinkwait ( netdev, LINK_WAIT_MS ) ) != 0 )
return rc;
/* Perform DHCP */
printf ( "DHCP (%s %s)", netdev->name,
netdev->ll_protocol->ntoa ( netdev->ll_addr ) );
if ( ( rc = start_dhcp ( &monojob, netdev ) ) == 0 ) {
rc = monojob_wait ( "" );
} else if ( rc > 0 ) {
printf ( " using cached\n" );
rc = 0;
}
return rc;
}
int pxebs ( struct net_device *netdev, unsigned int pxe_type ) {
int rc;
/* Perform PXE Boot Server Discovery */
printf ( "PXEBS (%s type %d)", netdev->name, pxe_type );
if ( ( rc = start_pxebs ( &monojob, netdev, pxe_type ) ) == 0 )
rc = monojob_wait ( "" );
return rc;
}