drivers/staging/rtl8712/rtl871x_security.h

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  * Modifications for inclusion into the Linux staging tree are
  19  * Copyright(c) 2010 Larry Finger. All rights reserved.
  20  *
  21  * Contact information:
  22  * WLAN FAE <wlanfae@realtek.com>
  23  * Larry Finger <Larry.Finger@lwfinger.net>
  24  *
  25  ******************************************************************************/
  26 #ifndef __RTL871X_SECURITY_H_
  27 #define __RTL871X_SECURITY_H_
  28
  29 #include "osdep_service.h"
  30 #include "drv_types.h"
  31
  32 #define _NO_PRIVACY_    0x0
  33 #define _WEP40_         0x1
  34 #define _TKIP_          0x2
  35 #define _TKIP_WTMIC_    0x3
  36 #define _AES_           0x4
  37 #define _WEP104_        0x5
  38
  39 #define _WPA_IE_ID_     0xdd
  40 #define _WPA2_IE_ID_    0x30
  41
  42 #ifndef Ndis802_11AuthModeWPA2
  43 #define Ndis802_11AuthModeWPA2 (Ndis802_11AuthModeWPANone + 1)
  44 #endif
  45
  46 #ifndef Ndis802_11AuthModeWPA2PSK
  47 #define Ndis802_11AuthModeWPA2PSK (Ndis802_11AuthModeWPANone + 2)
  48 #endif
  49
  50 union pn48 {
  51         u64 val;
  52 #if defined(__BIG_ENDIAN)
  53         struct {
  54                 u8 TSC7;
  55                 u8 TSC6;
  56                 u8 TSC5;
  57                 u8 TSC4;
  58                 u8 TSC3;
  59                 u8 TSC2;
  60                 u8 TSC1;
  61                 u8 TSC0;
  62         } _byte_;
  63 #else
  64         struct {
  65                 u8 TSC0;
  66                 u8 TSC1;
  67                 u8 TSC2;
  68                 u8 TSC3;
  69                 u8 TSC4;
  70                 u8 TSC5;
  71                 u8 TSC6;
  72                 u8 TSC7;
  73         } _byte_;
  74 #endif
  75 };
  76
  77 union Keytype {
  78         u8 skey[16];
  79         u32 lkey[4];
  80 };
  81
  82 struct RT_PMKID_LIST {
  83         u8 bUsed;
  84         u8 Bssid[6];
  85         u8 PMKID[16];
  86         u8 SsidBuf[33];
  87         u8 *ssid_octet;
  88         u16 ssid_length;
  89 };
  90
  91 struct security_priv {
  92         u32 AuthAlgrthm;                /* 802.11 auth, could be open, shared,
  93                                          * 8021x and authswitch
  94                                          */
  95         u32 PrivacyAlgrthm;             /* This specify the privacy for shared
  96                                          * auth. algorithm.
  97                                          */
  98         u32 PrivacyKeyIndex;            /* this is only valid for legendary
  99                                          * wep, 0~3 for key id.
 100                                          */
 101         union Keytype DefKey[4];        /* this is only valid for def. key */
 102         u32 DefKeylen[4];
 103         u32 XGrpPrivacy;                /* This specify the privacy algthm.
 104                                          * used for Grp key
 105                                          */
 106         u32 XGrpKeyid;                  /* key id used for Grp Key */
 107         union Keytype   XGrpKey[2];     /* 802.1x Group Key, for
 108                                          * inx0 and inx1
 109                                          */
 110         union Keytype   XGrptxmickey[2];
 111         union Keytype   XGrprxmickey[2];
 112         union pn48 Grptxpn;             /* PN48 used for Grp Key xmit. */
 113         union pn48 Grprxpn;             /* PN48 used for Grp Key recv. */
 114         u8 wps_hw_pbc_pressed;/*for hw pbc pressed*/
 115         u8 wps_phase;/*for wps*/
 116         u8 wps_ie[MAX_WPA_IE_LEN<<2];
 117         int wps_ie_len;
 118         u8      binstallGrpkey;
 119         u8      busetkipkey;
 120         struct timer_list tkip_timer;
 121         u8      bcheck_grpkey;
 122         u8      bgrpkey_handshake;
 123         s32     sw_encrypt;     /* from registry_priv */
 124         s32     sw_decrypt;     /* from registry_priv */
 125         s32     hw_decrypted;   /* if the rx packets is hw_decrypted==false,
 126                                  * it means the hw has not been ready.
 127                                  */
 128         u32 ndisauthtype;       /* keeps the auth_type & enc_status from upper
 129                                  * layer ioctl(wpa_supplicant or wzc)
 130                                  */
 131         u32 ndisencryptstatus;
 132         struct wlan_bssid_ex sec_bss;  /* for joinbss (h2c buffer) usage */
 133         struct NDIS_802_11_WEP ndiswep;
 134         u8 assoc_info[600];
 135         u8 szofcapability[256]; /* for wpa2 usage */
 136         u8 oidassociation[512]; /* for wpa/wpa2 usage */
 137         u8 authenticator_ie[256];  /* store ap security information element */
 138         u8 supplicant_ie[256];  /* store sta security information element */
 139         /* for tkip countermeasure */
 140         u32 last_mic_err_time;
 141         u8      btkip_countermeasure;
 142         u8      btkip_wait_report;
 143         u32 btkip_countermeasure_time;
 144         /*-------------------------------------------------------------------
 145          * For WPA2 Pre-Authentication.
 146          *------------------------------------------------------------------
 147          **/
 148         struct RT_PMKID_LIST            PMKIDList[NUM_PMKID_CACHE];
 149         u8                              PMKIDIndex;
 150 };
 151
 152 #define GET_ENCRY_ALGO(psecuritypriv, psta, encry_algo, bmcst) \
 153 do { \
 154         switch (psecuritypriv->AuthAlgrthm) { \
 155         case 0: \
 156         case 1: \
 157         case 3: \
 158                 encry_algo = (u8)psecuritypriv->PrivacyAlgrthm; \
 159                 break; \
 160         case 2: \
 161                 if (bmcst) \
 162                         encry_algo = (u8)psecuritypriv->XGrpPrivacy; \
 163                 else \
 164                         encry_algo = (u8)psta->XPrivacy; \
 165                 break; \
 166         } \
 167 } while (0)
 168 #define SET_ICE_IV_LEN(iv_len, icv_len, encrypt)\
 169 do {\
 170         switch (encrypt) { \
 171         case _WEP40_: \
 172         case _WEP104_: \
 173                 iv_len = 4; \
 174                 icv_len = 4; \
 175                 break; \
 176         case _TKIP_: \
 177                 iv_len = 8; \
 178                 icv_len = 4; \
 179                 break; \
 180         case _AES_: \
 181                 iv_len = 8; \
 182                 icv_len = 8; \
 183                 break; \
 184         default: \
 185                 iv_len = 0; \
 186                 icv_len = 0; \
 187                 break; \
 188         } \
 189 } while (0)
 190 #define GET_TKIP_PN(iv, txpn) \
 191 do {\
 192         txpn._byte_.TSC0 = iv[2];\
 193         txpn._byte_.TSC1 = iv[0];\
 194         txpn._byte_.TSC2 = iv[4];\
 195         txpn._byte_.TSC3 = iv[5];\
 196         txpn._byte_.TSC4 = iv[6];\
 197         txpn._byte_.TSC5 = iv[7];\
 198 } while (0)
 199
 200 #define ROL32(A, n) (((A) << (n)) | (((A)>>(32-(n)))  & ((1UL << (n)) - 1)))
 201 #define ROR32(A, n) ROL32((A), 32 - (n))
 202
 203 struct mic_data {
 204         u32  K0, K1;         /* Key */
 205         u32  L, R;           /* Current state */
 206         u32  M;              /* Message accumulator (single word) */
 207         u32  nBytesInM;      /* # bytes in M */
 208 };
 209
 210 void seccalctkipmic(
 211         u8  *key,
 212         u8  *header,
 213         u8  *data,
 214         u32  data_len,
 215         u8  *Miccode,
 216         u8   priority);
 217
 218 void r8712_secmicsetkey(struct mic_data *pmicdata, u8 *key);
 219 void r8712_secmicappend(struct mic_data *pmicdata, u8 *src, u32 nBytes);
 220 void r8712_secgetmic(struct mic_data *pmicdata, u8 *dst);
 221 u32 r8712_aes_encrypt(struct _adapter *padapter, u8 *pxmitframe);
 222 u32 r8712_tkip_encrypt(struct _adapter *padapter, u8 *pxmitframe);
 223 void r8712_wep_encrypt(struct _adapter *padapter, u8  *pxmitframe);
 224 u32 r8712_aes_decrypt(struct _adapter *padapter, u8  *precvframe);
 225 u32 r8712_tkip_decrypt(struct _adapter *padapter, u8  *precvframe);
 226 void r8712_wep_decrypt(struct _adapter *padapter, u8  *precvframe);
 227 void r8712_use_tkipkey_handler(struct timer_list *t);
 228
 229 #endif  /*__RTL871X_SECURITY_H_ */
 230