| /* |
| * Copyright (C) 2009 Joshua Oreman <oremanj@rwcr.net>. |
| * |
| * 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., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| FILE_LICENCE ( GPL2_OR_LATER ); |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <gpxe/dhcp.h> |
| #include <gpxe/dhcppkt.h> |
| #include <gpxe/netdevice.h> |
| #include <gpxe/iobuf.h> |
| #include <gpxe/uaccess.h> |
| |
| /** @file |
| * |
| * Cached DHCP packet handling |
| * |
| */ |
| |
| /** |
| * Store cached DHCPACK packet |
| * |
| * @v data User pointer to cached DHCP packet data |
| * @v len Length of cached DHCP packet data |
| * @ret rc Return status code |
| * |
| * This function should be called by the architecture-specific |
| * get_cached_dhcpack() handler. |
| */ |
| void store_cached_dhcpack ( userptr_t data, size_t len ) { |
| struct dhcp_packet *dhcppkt; |
| struct dhcphdr *dhcphdr; |
| struct settings *parent; |
| int rc; |
| |
| /* Create DHCP packet */ |
| dhcppkt = zalloc ( sizeof ( *dhcppkt ) + len ); |
| if ( ! dhcppkt ) |
| return; |
| |
| /* Fill in data for DHCP packet */ |
| dhcphdr = ( ( ( void * ) dhcppkt ) + sizeof ( * dhcppkt ) ); |
| copy_from_user ( dhcphdr, data, 0, len ); |
| dhcppkt_init ( dhcppkt, dhcphdr, len ); |
| DBG_HD ( dhcppkt->options.data, dhcppkt->options.len ); |
| |
| /* Register settings on the last opened network device. |
| * This will have the effect of registering cached settings |
| * with a network device when "dhcp netX" is performed for that |
| * device, which is usually what we want. |
| */ |
| parent = netdev_settings ( last_opened_netdev() ); |
| if ( ( rc = register_settings ( &dhcppkt->settings, parent ) ) != 0 ) |
| DBG ( "DHCP could not register cached settings: %s\n", |
| strerror ( rc ) ); |
| |
| dhcppkt_put ( dhcppkt ); |
| |
| DBG ( "DHCP registered cached settings\n" ); |
| } |