Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1 | /* |
Edhar, Mahesh Kumar | 0d82c21 | 2015-02-03 17:47:16 +0530 | [diff] [blame] | 2 | * Copyright (c) 2011-2015 The Linux Foundation. All rights reserved. |
Kiet Lam | 842dad0 | 2014-02-18 18:44:02 -0800 | [diff] [blame] | 3 | * |
| 4 | * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| 5 | * |
| 6 | * |
| 7 | * Permission to use, copy, modify, and/or distribute this software for |
| 8 | * any purpose with or without fee is hereby granted, provided that the |
| 9 | * above copyright notice and this permission notice appear in all |
| 10 | * copies. |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| 13 | * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| 14 | * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| 15 | * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| 16 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 17 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 18 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 19 | * PERFORMANCE OF THIS SOFTWARE. |
Gopichand Nakkala | 92f07d8 | 2013-01-08 21:16:34 -0800 | [diff] [blame] | 20 | */ |
Kiet Lam | 842dad0 | 2014-02-18 18:44:02 -0800 | [diff] [blame] | 21 | |
| 22 | /* |
| 23 | * This file was originally distributed by Qualcomm Atheros, Inc. |
| 24 | * under proprietary terms before Copyright ownership was assigned |
| 25 | * to the Linux Foundation. |
| 26 | */ |
| 27 | |
Gopichand Nakkala | 92f07d8 | 2013-01-08 21:16:34 -0800 | [diff] [blame] | 28 | /* |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 29 | * |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 30 | * This file limSecurityUtils.h contains the utility definitions |
| 31 | * related to WEP encryption/decryption etc. |
| 32 | * Author: Chandra Modumudi |
| 33 | * Date: 02/13/02 |
| 34 | * History:- |
| 35 | * Date Modified by Modification Information |
| 36 | * -------------------------------------------------------------------- |
| 37 | */ |
| 38 | #ifndef __LIM_SECURITY_UTILS_H |
| 39 | #define __LIM_SECURITY_UTILS_H |
| 40 | #include "sirMacProtDef.h" //for tSirMacAuthFrameBody |
| 41 | |
Madan Mohan Koyyalamudi | a53c4dc | 2012-11-13 10:35:42 -0800 | [diff] [blame] | 42 | #define LIM_ENCR_AUTH_BODY_LEN (sizeof(tSirMacAuthFrameBody) + \ |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 43 | SIR_MAC_WEP_IV_LENGTH + \ |
Madan Mohan Koyyalamudi | a53c4dc | 2012-11-13 10:35:42 -0800 | [diff] [blame] | 44 | SIR_MAC_WEP_ICV_LENGTH) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 45 | struct tLimPreAuthNode; |
| 46 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 47 | tANI_U8 limIsAuthAlgoSupported(tpAniSirGlobal, tAniAuthType, tpPESession); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 48 | |
| 49 | // MAC based authentication related functions |
| 50 | void limInitPreAuthList(tpAniSirGlobal); |
| 51 | void limDeletePreAuthList(tpAniSirGlobal); |
| 52 | struct tLimPreAuthNode *limSearchPreAuthList(tpAniSirGlobal, tSirMacAddr); |
| 53 | void limAddPreAuthNode(tpAniSirGlobal, struct tLimPreAuthNode *); |
| 54 | void limDeletePreAuthNode(tpAniSirGlobal, tSirMacAddr); |
| 55 | void limReleasePreAuthNode(tpAniSirGlobal pMac, tpLimPreAuthNode pAuthNode); |
| 56 | void limRestoreFromAuthState(tpAniSirGlobal, |
| 57 | tSirResultCodes, tANI_U16,tpPESession); |
Edhar, Mahesh Kumar | 0d82c21 | 2015-02-03 17:47:16 +0530 | [diff] [blame] | 58 | tANI_U8 limDeleteOpenAuthPreAuthNode(tpAniSirGlobal pMac); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 59 | |
| 60 | // Encryption/Decryption related functions |
| 61 | tCfgWepKeyEntry *limLookUpKeyMappings(tSirMacAddr); |
| 62 | void limComputeCrc32(tANI_U8 *, tANI_U8 *, tANI_U8); |
| 63 | void limRC4(tANI_U8 *, tANI_U8 *, tANI_U8 *, tANI_U32, tANI_U16); |
| 64 | void limEncryptAuthFrame(tpAniSirGlobal, tANI_U8, tANI_U8 *, tANI_U8 *, tANI_U8 *, tANI_U32); |
| 65 | tANI_U8 limDecryptAuthFrame(tpAniSirGlobal, tANI_U8 *, tANI_U8 *, tANI_U8 *, tANI_U32, tANI_U16); |
| 66 | |
| 67 | void limSendSetBssKeyReq( tpAniSirGlobal, tLimMlmSetKeysReq *,tpPESession ); |
| 68 | void limSendSetStaKeyReq( tpAniSirGlobal, tLimMlmSetKeysReq *, tANI_U16, tANI_U8,tpPESession); |
| 69 | void limPostSmeSetKeysCnf( tpAniSirGlobal, tLimMlmSetKeysReq *, tLimMlmSetKeysCnf * ); |
| 70 | |
| 71 | void limSendRemoveBssKeyReq(tpAniSirGlobal pMac, tLimMlmRemoveKeyReq * pMlmRemoveKeyReq,tpPESession); |
| 72 | void limSendRemoveStaKeyReq(tpAniSirGlobal pMac, tLimMlmRemoveKeyReq * pMlmRemoveKeyReq, tANI_U16 staIdx,tpPESession); |
Jeff Johnson | e724574 | 2012-09-05 17:12:55 -0700 | [diff] [blame] | 73 | void limPostSmeRemoveKeyCnf(tpAniSirGlobal pMac, tpPESession psessionEntry, tLimMlmRemoveKeyReq * pMlmRemoveKeyReq, tLimMlmRemoveKeyCnf * mlmRemoveKeyCnf); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 74 | |
| 75 | #define PTAPS 0xedb88320 |
| 76 | |
| 77 | static inline tANI_U32 |
| 78 | limCrcUpdate(tANI_U32 crc, tANI_U8 x) |
| 79 | { |
| 80 | |
| 81 | // Update CRC computation for 8 bits contained in x |
| 82 | // |
| 83 | tANI_U32 z; |
| 84 | tANI_U32 fb; |
| 85 | int i; |
| 86 | |
| 87 | z = crc^x; |
| 88 | for (i=0; i<8; i++) { |
| 89 | fb = z & 1; |
| 90 | z >>= 1; |
| 91 | if (fb) z ^= PTAPS; |
| 92 | } |
| 93 | return z; |
| 94 | } |
| 95 | |
| 96 | #endif /* __LIM_SECURITY_UTILS_H */ |