1 /* 2 * Copyright (c) 2009 Joshua Oreman <oremanj (at) rwcr.net>. 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 #ifndef _GPXE_SEC80211_H 20 #define _GPXE_SEC80211_H 21 22 FILE_LICENCE ( GPL2_OR_LATER ); 23 24 #include <gpxe/net80211.h> 25 #include <errno.h> 26 27 /** @file 28 * 29 * Definitions for general secured-network routines. 30 * 31 * Any function in this file which may be referenced by code which is 32 * not exclusive to encryption-enabled builds (e.g. sec80211_detect(), 33 * which is called by net80211_probe_step() to fill the net80211_wlan 34 * structure's security fields) must be declared as a weak symbol, 35 * using an inline interface similar to that used for 36 * sec80211_detect() below. This prevents secure network support from 37 * bloating general builds by any more than a few tiny hooks to call 38 * crypto functions when crypto structures are non-NULL. 39 */ 40 41 int _sec80211_detect ( struct io_buffer *iob, 42 enum net80211_security_proto *secprot, 43 enum net80211_crypto_alg *crypt ) 44 __attribute__ (( weak )); 45 46 47 /** 48 * Inline safety wrapper for _sec80211_detect() 49 * 50 * @v iob I/O buffer containing beacon frame 51 * @ret secprot Security handshaking protocol used by network 52 * @ret crypt Cryptosystem used by network 53 * @ret rc Return status code 54 * 55 * This function transparently calls _sec80211_detect() if the file 56 * containing it was compiled in, or returns an error indication of 57 * @c -ENOTSUP if not. 58 */ 59 static inline int sec80211_detect ( struct io_buffer *iob, 60 enum net80211_security_proto *secprot, 61 enum net80211_crypto_alg *crypt ) { 62 if ( _sec80211_detect ) 63 return _sec80211_detect ( iob, secprot, crypt ); 64 return -ENOTSUP; 65 } 66 67 int sec80211_detect_ie ( int is_rsn, u8 *start, u8 *end, 68 enum net80211_security_proto *secprot, 69 enum net80211_crypto_alg *crypt ); 70 u8 * sec80211_find_rsn ( union ieee80211_ie *ie, void *ie_end, 71 int *is_rsn, u8 **end ); 72 73 int sec80211_install ( struct net80211_crypto **which, 74 enum net80211_crypto_alg crypt, 75 const void *key, int len, const void *rsc ); 76 77 u32 sec80211_rsn_get_crypto_desc ( enum net80211_crypto_alg crypt, int rsnie ); 78 u32 sec80211_rsn_get_akm_desc ( enum net80211_security_proto secprot, 79 int rsnie ); 80 enum net80211_crypto_alg sec80211_rsn_get_net80211_crypt ( u32 desc ); 81 82 #endif /* _GPXE_SEC80211_H */ 83 84
