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
50union 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
77union Keytype {
78	u8 skey[16];
79	u32 lkey[4];
80};
81
82struct 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
91struct security_priv {
92	u32 AuthAlgrthm;		/* 802.11 auth, could be open, shared,
93					 * 8021x and authswitch */
94	u32 PrivacyAlgrthm;		/* This specify the privacy for shared
95					 * auth. algorithm. */
96	u32 PrivacyKeyIndex;		/* this is only valid for legendary
97					 * wep, 0~3 for key id. */
98	union Keytype DefKey[4];	/* this is only valid for def. key */
99	u32 DefKeylen[4];
100	u32 XGrpPrivacy;		/* This specify the privacy algthm.
101					 * used for Grp key */
102	u32 XGrpKeyid;			/* key id used for Grp Key */
103	union Keytype	XGrpKey[2];	/* 802.1x Group Key, for
104					 * inx0 and inx1 */
105	union Keytype	XGrptxmickey[2];
106	union Keytype	XGrprxmickey[2];
107	union pn48 Grptxpn;		/* PN48 used for Grp Key xmit. */
108	union pn48 Grprxpn;		/* PN48 used for Grp Key recv. */
109	u8 wps_hw_pbc_pressed;/*for hw pbc pressed*/
110	u8 wps_phase;/*for wps*/
111	u8 wps_ie[MAX_WPA_IE_LEN<<2];
112	int wps_ie_len;
113	u8	binstallGrpkey;
114	u8	busetkipkey;
115	struct timer_list tkip_timer;
116	u8	bcheck_grpkey;
117	u8	bgrpkey_handshake;
118	s32	sw_encrypt;	/* from registry_priv */
119	s32	sw_decrypt;	/* from registry_priv */
120	s32	hw_decrypted;	/* if the rx packets is hw_decrypted==false,
121				 * it means the hw has not been ready. */
122	u32 ndisauthtype;	/* keeps the auth_type & enc_status from upper
123				 * layer ioctl(wpa_supplicant or wzc) */
124	u32 ndisencryptstatus;
125	struct wlan_bssid_ex sec_bss;  /* for joinbss (h2c buffer) usage */
126	struct NDIS_802_11_WEP ndiswep;
127	u8 assoc_info[600];
128	u8 szofcapability[256]; /* for wpa2 usage */
129	u8 oidassociation[512]; /* for wpa/wpa2 usage */
130	u8 authenticator_ie[256];  /* store ap security information element */
131	u8 supplicant_ie[256];  /* store sta security information element */
132	/* for tkip countermeasure */
133	u32 last_mic_err_time;
134	u8	btkip_countermeasure;
135	u8	btkip_wait_report;
136	u32 btkip_countermeasure_time;
137	/*-------------------------------------------------------------------
138	 * For WPA2 Pre-Authentication.
139	 *------------------------------------------------------------------ */
140	struct RT_PMKID_LIST		PMKIDList[NUM_PMKID_CACHE];
141	u8				PMKIDIndex;
142};
143
144#define GET_ENCRY_ALGO(psecuritypriv, psta, encry_algo, bmcst) \
145do { \
146	switch (psecuritypriv->AuthAlgrthm) { \
147	case 0: \
148	case 1: \
149	case 3: \
150		encry_algo = (u8)psecuritypriv->PrivacyAlgrthm; \
151		break; \
152	case 2: \
153		if (bmcst) \
154			encry_algo = (u8)psecuritypriv->XGrpPrivacy; \
155		else \
156			encry_algo = (u8)psta->XPrivacy; \
157		break; \
158	} \
159} while (0)
160#define SET_ICE_IV_LEN(iv_len, icv_len, encrypt)\
161do {\
162	switch (encrypt) { \
163	case _WEP40_: \
164	case _WEP104_: \
165		iv_len = 4; \
166		icv_len = 4; \
167		break; \
168	case _TKIP_: \
169		iv_len = 8; \
170		icv_len = 4; \
171		break; \
172	case _AES_: \
173		iv_len = 8; \
174		icv_len = 8; \
175		break; \
176	default: \
177		iv_len = 0; \
178		icv_len = 0; \
179		break; \
180	} \
181} while (0)
182#define GET_TKIP_PN(iv, txpn) \
183do {\
184	txpn._byte_.TSC0 = iv[2];\
185	txpn._byte_.TSC1 = iv[0];\
186	txpn._byte_.TSC2 = iv[4];\
187	txpn._byte_.TSC3 = iv[5];\
188	txpn._byte_.TSC4 = iv[6];\
189	txpn._byte_.TSC5 = iv[7];\
190} while (0)
191
192#define ROL32(A, n) (((A) << (n)) | (((A)>>(32-(n)))  & ((1UL << (n)) - 1)))
193#define ROR32(A, n) ROL32((A), 32 - (n))
194
195struct mic_data {
196	u32  K0, K1;         /* Key */
197	u32  L, R;           /* Current state */
198	u32  M;              /* Message accumulator (single word) */
199	u32  nBytesInM;      /* # bytes in M */
200};
201
202void seccalctkipmic(
203	u8  *key,
204	u8  *header,
205	u8  *data,
206	u32  data_len,
207	u8  *Miccode,
208	u8   priority);
209
210void r8712_secmicsetkey(struct mic_data *pmicdata, u8 *key);
211void r8712_secmicappend(struct mic_data *pmicdata, u8 *src, u32 nBytes);
212void r8712_secgetmic(struct mic_data *pmicdata, u8 *dst);
213u32 r8712_aes_encrypt(struct _adapter *padapter, u8 *pxmitframe);
214u32 r8712_tkip_encrypt(struct _adapter *padapter, u8 *pxmitframe);
215void r8712_wep_encrypt(struct _adapter *padapter, u8  *pxmitframe);
216u32 r8712_aes_decrypt(struct _adapter *padapter, u8  *precvframe);
217u32 r8712_tkip_decrypt(struct _adapter *padapter, u8  *precvframe);
218void r8712_wep_decrypt(struct _adapter *padapter, u8  *precvframe);
219void r8712_use_tkipkey_handler(void *FunctionContext);
220
221#endif	/*__RTL871X_SECURITY_H_ */
222
223