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      1 /*
      2  * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
      3  * Copyright (c) 2002-2008 Atheros Communications, Inc.
      4  *
      5  * Permission to use, copy, modify, and/or distribute this software for any
      6  * purpose with or without fee is hereby granted, provided that the above
      7  * copyright notice and this permission notice appear in all copies.
      8  *
      9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     16  *
     17  * $Id: ar5416_keycache.c,v 1.1.1.1 2008/12/11 04:46:48 alc Exp $
     18  */
     19 #include "opt_ah.h"
     20 
     21 #include "ah.h"
     22 #include "ah_internal.h"
     23 
     24 #include "ar5416/ar5416.h"
     25 
     26 static const int keyType[] = {
     27 	1,	/* HAL_CIPHER_WEP */
     28 	0,	/* HAL_CIPHER_AES_OCB */
     29 	2,	/* HAL_CIPHER_AES_CCM */
     30 	0,	/* HAL_CIPHER_CKIP */
     31 	3,	/* HAL_CIPHER_TKIP */
     32 	0,	/* HAL_CIPHER_CLR */
     33 };
     34 
     35 /*
     36  * Clear the specified key cache entry and any associated MIC entry.
     37  */
     38 HAL_BOOL
     39 ar5416ResetKeyCacheEntry(struct ath_hal *ah, uint16_t entry)
     40 {
     41 	struct ath_hal_5416 *ahp = AH5416(ah);
     42 
     43 	if (ar5212ResetKeyCacheEntry(ah, entry)) {
     44 		ahp->ah_keytype[entry] = keyType[HAL_CIPHER_CLR];
     45 		return AH_TRUE;
     46 	} else
     47 		return AH_FALSE;
     48 }
     49 
     50 /*
     51  * Sets the contents of the specified key cache entry
     52  * and any associated MIC entry.
     53  */
     54 HAL_BOOL
     55 ar5416SetKeyCacheEntry(struct ath_hal *ah, uint16_t entry,
     56                        const HAL_KEYVAL *k, const uint8_t *mac,
     57                        int xorKey)
     58 {
     59 	struct ath_hal_5416 *ahp = AH5416(ah);
     60 
     61 	if (ar5212SetKeyCacheEntry(ah, entry, k, mac, xorKey)) {
     62 		ahp->ah_keytype[entry] = keyType[k->kv_type];
     63 		return AH_TRUE;
     64 	} else
     65 		return AH_FALSE;
     66 }
     67