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/*
* 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.
*/
#ifndef _GPXE_SEC80211_H
#define _GPXE_SEC80211_H
FILE_LICENCE ( GPL2_OR_LATER );
#include <gpxe/net80211.h>
#include <errno.h>
/** @file
*
* Definitions for general secured-network routines.
*
* Any function in this file which may be referenced by code which is
* not exclusive to encryption-enabled builds (e.g. sec80211_detect(),
* which is called by net80211_probe_step() to fill the net80211_wlan
* structure's security fields) must be declared as a weak symbol,
* using an inline interface similar to that used for
* sec80211_detect() below. This prevents secure network support from
* bloating general builds by any more than a few tiny hooks to call
* crypto functions when crypto structures are non-NULL.
*/
int _sec80211_detect ( struct io_buffer *iob,
enum net80211_security_proto *secprot,
enum net80211_crypto_alg *crypt )
__attribute__ (( weak ));
/**
* Inline safety wrapper for _sec80211_detect()
*
* @v iob I/O buffer containing beacon frame
* @ret secprot Security handshaking protocol used by network
* @ret crypt Cryptosystem used by network
* @ret rc Return status code
*
* This function transparently calls _sec80211_detect() if the file
* containing it was compiled in, or returns an error indication of
* @c -ENOTSUP if not.
*/
static inline int sec80211_detect ( struct io_buffer *iob,
enum net80211_security_proto *secprot,
enum net80211_crypto_alg *crypt ) {
if ( _sec80211_detect )
return _sec80211_detect ( iob, secprot, crypt );
return -ENOTSUP;
}
int sec80211_detect_ie ( int is_rsn, u8 *start, u8 *end,
enum net80211_security_proto *secprot,
enum net80211_crypto_alg *crypt );
u8 * sec80211_find_rsn ( union ieee80211_ie *ie, void *ie_end,
int *is_rsn, u8 **end );
int sec80211_install ( struct net80211_crypto **which,
enum net80211_crypto_alg crypt,
const void *key, int len, const void *rsc );
u32 sec80211_rsn_get_crypto_desc ( enum net80211_crypto_alg crypt, int rsnie );
u32 sec80211_rsn_get_akm_desc ( enum net80211_security_proto secprot,
int rsnie );
enum net80211_crypto_alg sec80211_rsn_get_net80211_crypt ( u32 desc );
#endif /* _GPXE_SEC80211_H */
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