1 /* 2 * Copyright (C) 2007 Michael Brown <mbrown (at) fensystems.co.uk>. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License as 6 * published by the Free Software Foundation; either version 2 of the 7 * License, or any later version. 8 * 9 * This program is distributed in the hope that it will be useful, but 10 * WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 17 */ 18 19 FILE_LICENCE ( GPL2_OR_LATER ); 20 21 #include <string.h> 22 #include <stdio.h> 23 #include <errno.h> 24 #include <gpxe/netdevice.h> 25 #include <gpxe/dhcp.h> 26 #include <gpxe/monojob.h> 27 #include <gpxe/process.h> 28 #include <usr/ifmgmt.h> 29 #include <usr/dhcpmgmt.h> 30 31 #define LINK_WAIT_MS 15000 32 33 /** @file 34 * 35 * DHCP management 36 * 37 */ 38 39 int dhcp ( struct net_device *netdev ) { 40 uint8_t *chaddr; 41 uint8_t hlen; 42 uint16_t flags; 43 int rc; 44 45 /* Check we can open the interface first */ 46 if ( ( rc = ifopen ( netdev ) ) != 0 ) 47 return rc; 48 49 /* Wait for link-up */ 50 if ( ( rc = iflinkwait ( netdev, LINK_WAIT_MS ) ) != 0 ) 51 return rc; 52 53 /* Perform DHCP */ 54 chaddr = dhcp_chaddr ( netdev, &hlen, &flags ); 55 printf ( "DHCP (%s ", netdev->name ); 56 while ( hlen-- ) 57 printf ( "%02x%c", *(chaddr++), ( hlen ? ':' : ')' ) ); 58 59 if ( ( rc = start_dhcp ( &monojob, netdev ) ) == 0 ) { 60 rc = monojob_wait ( "" ); 61 } else if ( rc > 0 ) { 62 printf ( " using cached\n" ); 63 rc = 0; 64 } 65 66 return rc; 67 } 68 69 int pxebs ( struct net_device *netdev, unsigned int pxe_type ) { 70 int rc; 71 72 /* Perform PXE Boot Server Discovery */ 73 printf ( "PXEBS (%s type %d)", netdev->name, pxe_type ); 74 if ( ( rc = start_pxebs ( &monojob, netdev, pxe_type ) ) == 0 ) 75 rc = monojob_wait ( "" ); 76 77 return rc; 78 } 79
