1 /******************************************************************************
3 * Copyright(c) 2009-2010 Realtek Corporation.
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.
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
14 * The full GNU General Public License is included in this distribution in the
15 * file called LICENSE.
17 * Contact Information:
18 * wlanfae <wlanfae@realtek.com>
19 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
20 * Hsinchu 300, Taiwan.
22 * Larry Finger <Larry.Finger@lwfinger.net>
24 *****************************************************************************/
28 void rtl92e_cam_reset_sec_info(struct ieee80211_hw
*hw
)
30 struct rtl_priv
*rtlpriv
= rtl_priv(hw
);
32 rtlpriv
->sec
.use_defaultkey
= false;
33 rtlpriv
->sec
.pairwise_enc_algorithm
= NO_ENCRYPTION
;
34 rtlpriv
->sec
.group_enc_algorithm
= NO_ENCRYPTION
;
35 memset(rtlpriv
->sec
.key_buf
, 0, KEY_BUF_SIZE
* MAX_KEY_LEN
);
36 memset(rtlpriv
->sec
.key_len
, 0, KEY_BUF_SIZE
);
37 rtlpriv
->sec
.pairwise_key
= NULL
;
40 static void rtl_cam_program_entry(struct ieee80211_hw
*hw
, u32 entry_no
,
41 u8
*mac_addr
, u8
*key_cont_128
, u16 us_config
)
43 struct rtl_priv
*rtlpriv
= rtl_priv(hw
);
46 u32 target_content
= 0;
49 RT_PRINT_DATA(rtlpriv
, COMP_SEC
, DBG_DMESG
, "Key content:",
52 for (entry_i
= 0; entry_i
< CAM_CONTENT_COUNT
; entry_i
++) {
53 target_command
= entry_i
+ CAM_CONTENT_COUNT
* entry_no
;
54 target_command
= target_command
| BIT(31) | BIT(16);
57 target_content
= (u32
) (*(mac_addr
+ 0)) << 16 |
58 (u32
) (*(mac_addr
+ 1)) << 24 | (u32
) us_config
;
60 rtl_write_dword(rtlpriv
, rtlpriv
->cfg
->maps
[WCAMI
],
62 rtl_write_dword(rtlpriv
, rtlpriv
->cfg
->maps
[RWCAM
],
65 RT_TRACE(COMP_SEC
, DBG_LOUD
,
67 rtlpriv
->cfg
->maps
[WCAMI
], target_content
));
68 RT_TRACE(COMP_SEC
, DBG_LOUD
,
69 ("The Key ID is %d\n", entry_no
));
70 RT_TRACE(COMP_SEC
, DBG_LOUD
,
72 rtlpriv
->cfg
->maps
[RWCAM
], target_command
));
73 } else if (entry_i
== 1) {
74 target_content
= (u32
) (*(mac_addr
+ 5)) << 24 |
75 (u32
) (*(mac_addr
+ 4)) << 16 |
76 (u32
) (*(mac_addr
+ 3)) << 8 |
77 (u32
) (*(mac_addr
+ 2));
79 rtl_write_dword(rtlpriv
, rtlpriv
->cfg
->maps
[WCAMI
],
81 rtl_write_dword(rtlpriv
, rtlpriv
->cfg
->maps
[RWCAM
],
84 RT_TRACE(COMP_SEC
, DBG_LOUD
,
85 ("WRITE A4: %x\n", target_content
));
86 RT_TRACE(COMP_SEC
, DBG_LOUD
,
87 ("WRITE A0: %x\n", target_command
));
90 (u32
) (*(key_cont_128
+ (entry_i
* 4 - 8) + 3)) <<
91 24 | (u32
) (*(key_cont_128
+ (entry_i
* 4 - 8) + 2))
93 (u32
) (*(key_cont_128
+ (entry_i
* 4 - 8) + 1)) << 8
94 | (u32
) (*(key_cont_128
+ (entry_i
* 4 - 8) + 0));
96 rtl_write_dword(rtlpriv
, rtlpriv
->cfg
->maps
[WCAMI
],
98 rtl_write_dword(rtlpriv
, rtlpriv
->cfg
->maps
[RWCAM
],
102 RT_TRACE(COMP_SEC
, DBG_LOUD
,
103 ("WRITE A4: %x\n", target_content
));
104 RT_TRACE(COMP_SEC
, DBG_LOUD
,
105 ("WRITE A0: %x\n", target_command
));
109 RT_TRACE(COMP_SEC
, DBG_LOUD
,
110 ("after set key, usconfig:%x\n", us_config
));
113 u8
stg_rtl_cam_add_one_entry(struct ieee80211_hw
*hw
, u8
*mac_addr
,
114 u32 ul_key_id
, u32 ul_entry_idx
, u32 ul_enc_alg
,
115 u32 ul_default_key
, u8
*key_content
)
118 struct rtl_priv
*rtlpriv
= rtl_priv(hw
);
120 RT_TRACE(COMP_SEC
, DBG_DMESG
,
121 ("EntryNo:%x, ulKeyId=%x, ulEncAlg=%x, ulUseDK=%x MacAddr %pM\n",
122 ul_entry_idx
, ul_key_id
, ul_enc_alg
,
123 ul_default_key
, mac_addr
));
125 if (ul_key_id
== TOTAL_CAM_ENTRY
) {
126 RT_TRACE(COMP_ERR
, DBG_WARNING
,
127 ("ulKeyId exceed!\n"));
131 if (ul_default_key
== 1)
132 us_config
= CFG_VALID
| ((u16
) (ul_enc_alg
) << 2);
134 us_config
= CFG_VALID
| ((ul_enc_alg
) << 2) | ul_key_id
;
136 rtl_cam_program_entry(hw
, ul_entry_idx
, mac_addr
,
137 (u8
*)key_content
, us_config
);
139 RT_TRACE(COMP_SEC
, DBG_DMESG
, ("end\n"));
143 EXPORT_SYMBOL(stg_rtl_cam_add_one_entry
);
145 int stg_rtl_cam_delete_one_entry(struct ieee80211_hw
*hw
,
146 u8
*mac_addr
, u32 ul_key_id
)
149 struct rtl_priv
*rtlpriv
= rtl_priv(hw
);
151 RT_TRACE(COMP_SEC
, DBG_DMESG
, ("key_idx:%d\n", ul_key_id
));
153 ul_command
= ul_key_id
* CAM_CONTENT_COUNT
;
154 ul_command
= ul_command
| BIT(31) | BIT(16);
156 rtl_write_dword(rtlpriv
, rtlpriv
->cfg
->maps
[WCAMI
], 0);
157 rtl_write_dword(rtlpriv
, rtlpriv
->cfg
->maps
[RWCAM
], ul_command
);
159 RT_TRACE(COMP_SEC
, DBG_DMESG
,
160 ("stg_rtl_cam_delete_one_entry(): WRITE A4: %x\n", 0));
161 RT_TRACE(COMP_SEC
, DBG_DMESG
,
162 ("stg_rtl_cam_delete_one_entry(): WRITE A0: %x\n",
166 EXPORT_SYMBOL(stg_rtl_cam_delete_one_entry
);
168 void stg_rtl_cam_reset_all_entry(struct ieee80211_hw
*hw
)
171 struct rtl_priv
*rtlpriv
= rtl_priv(hw
);
173 ul_command
= BIT(31) | BIT(30);
174 rtl_write_dword(rtlpriv
, rtlpriv
->cfg
->maps
[RWCAM
], ul_command
);
176 EXPORT_SYMBOL(stg_rtl_cam_reset_all_entry
);
178 void stg_rtl_cam_mark_invalid(struct ieee80211_hw
*hw
, u8 uc_index
)
180 struct rtl_priv
*rtlpriv
= rtl_priv(hw
);
184 u32 ul_enc_algo
= rtlpriv
->cfg
->maps
[SEC_CAM_AES
];
186 switch (rtlpriv
->sec
.pairwise_enc_algorithm
) {
187 case WEP40_ENCRYPTION
:
188 ul_enc_algo
= rtlpriv
->cfg
->maps
[SEC_CAM_WEP40
];
190 case WEP104_ENCRYPTION
:
191 ul_enc_algo
= rtlpriv
->cfg
->maps
[SEC_CAM_WEP104
];
193 case TKIP_ENCRYPTION
:
194 ul_enc_algo
= rtlpriv
->cfg
->maps
[SEC_CAM_TKIP
];
196 case AESCCMP_ENCRYPTION
:
197 ul_enc_algo
= rtlpriv
->cfg
->maps
[SEC_CAM_AES
];
200 ul_enc_algo
= rtlpriv
->cfg
->maps
[SEC_CAM_AES
];
203 ul_content
= (uc_index
& 3) | ((u16
) (ul_enc_algo
) << 2);
205 ul_content
|= BIT(15);
206 ul_command
= CAM_CONTENT_COUNT
* uc_index
;
207 ul_command
= ul_command
| BIT(31) | BIT(16);
209 rtl_write_dword(rtlpriv
, rtlpriv
->cfg
->maps
[WCAMI
], ul_content
);
210 rtl_write_dword(rtlpriv
, rtlpriv
->cfg
->maps
[RWCAM
], ul_command
);
212 RT_TRACE(COMP_SEC
, DBG_DMESG
,
213 ("stg_rtl_cam_mark_invalid(): WRITE A4: %x\n", ul_content
));
214 RT_TRACE(COMP_SEC
, DBG_DMESG
,
215 ("stg_rtl_cam_mark_invalid(): WRITE A0: %x\n", ul_command
));
217 EXPORT_SYMBOL(stg_rtl_cam_mark_invalid
);
219 void stg_rtl_cam_empty_entry(struct ieee80211_hw
*hw
, u8 uc_index
)
221 struct rtl_priv
*rtlpriv
= rtl_priv(hw
);
225 u32 ul_encalgo
= rtlpriv
->cfg
->maps
[SEC_CAM_AES
];
228 switch (rtlpriv
->sec
.pairwise_enc_algorithm
) {
229 case WEP40_ENCRYPTION
:
230 ul_encalgo
= rtlpriv
->cfg
->maps
[SEC_CAM_WEP40
];
232 case WEP104_ENCRYPTION
:
233 ul_encalgo
= rtlpriv
->cfg
->maps
[SEC_CAM_WEP104
];
235 case TKIP_ENCRYPTION
:
236 ul_encalgo
= rtlpriv
->cfg
->maps
[SEC_CAM_TKIP
];
238 case AESCCMP_ENCRYPTION
:
239 ul_encalgo
= rtlpriv
->cfg
->maps
[SEC_CAM_AES
];
242 ul_encalgo
= rtlpriv
->cfg
->maps
[SEC_CAM_AES
];
245 for (entry_i
= 0; entry_i
< CAM_CONTENT_COUNT
; entry_i
++) {
248 (uc_index
& 0x03) | ((u16
) (ul_encalgo
) << 2);
249 ul_content
|= BIT(15);
255 ul_command
= CAM_CONTENT_COUNT
* uc_index
+ entry_i
;
256 ul_command
= ul_command
| BIT(31) | BIT(16);
258 rtl_write_dword(rtlpriv
, rtlpriv
->cfg
->maps
[WCAMI
], ul_content
);
259 rtl_write_dword(rtlpriv
, rtlpriv
->cfg
->maps
[RWCAM
], ul_command
);
261 RT_TRACE(COMP_SEC
, DBG_LOUD
,
262 ("stg_rtl_cam_empty_entry(): WRITE A4: %x\n",
264 RT_TRACE(COMP_SEC
, DBG_LOUD
,
265 ("stg_rtl_cam_empty_entry(): WRITE A0: %x\n",
269 EXPORT_SYMBOL(stg_rtl_cam_empty_entry
);
271 u8
stg_rtl_cam_get_free_entry(struct ieee80211_hw
*hw
, u8
*sta_addr
)
273 struct rtl_priv
*rtlpriv
= rtl_priv(hw
);
274 u32 bitmap
= (rtlpriv
->sec
.hwsec_cam_bitmap
) >> 4;
279 RT_TRACE(COMP_SEC
, DBG_EMERG
,
280 ("sta_addr is NULL\n"));
281 return TOTAL_CAM_ENTRY
;
283 /* Does STA already exist? */
284 for (i
= 4; i
< TOTAL_CAM_ENTRY
; i
++) {
285 addr
= rtlpriv
->sec
.hwsec_cam_sta_addr
[i
];
286 if (memcmp(addr
, sta_addr
, ETH_ALEN
) == 0)
289 /* Get a free CAM entry. */
290 for (entry_idx
= 4; entry_idx
< TOTAL_CAM_ENTRY
; entry_idx
++) {
291 if ((bitmap
& BIT(0)) == 0) {
292 RT_TRACE(COMP_SEC
, DBG_EMERG
,
293 ("-----hwsec_cam_bitmap: 0x%x entry_idx=%d\n",
294 rtlpriv
->sec
.hwsec_cam_bitmap
, entry_idx
));
295 rtlpriv
->sec
.hwsec_cam_bitmap
|= BIT(0) << entry_idx
;
296 memcpy(rtlpriv
->sec
.hwsec_cam_sta_addr
[entry_idx
],
300 bitmap
= bitmap
>> 1;
302 return TOTAL_CAM_ENTRY
;
304 EXPORT_SYMBOL(stg_rtl_cam_get_free_entry
);
306 void stg_rtl_cam_del_entry(struct ieee80211_hw
*hw
, u8
*sta_addr
)
308 struct rtl_priv
*rtlpriv
= rtl_priv(hw
);
312 if (NULL
== sta_addr
) {
313 RT_TRACE(COMP_SEC
, DBG_EMERG
,
314 ("sta_addr is NULL.\n"));
318 if (is_zero_ether_addr(sta_addr
)) {
319 RT_TRACE(COMP_SEC
, DBG_EMERG
,
320 ("sta_addr is 00:00:00:00:00:00.\n"));
323 /* Does STA already exist? */
324 for (i
= 4; i
< TOTAL_CAM_ENTRY
; i
++) {
325 addr
= rtlpriv
->sec
.hwsec_cam_sta_addr
[i
];
326 bitmap
= (rtlpriv
->sec
.hwsec_cam_bitmap
) >> i
;
327 if (((bitmap
& BIT(0)) == BIT(0)) &&
328 (memcmp(addr
, sta_addr
, ETH_ALEN
) == 0)) {
329 /* Remove from HW Security CAM */
330 memset(rtlpriv
->sec
.hwsec_cam_sta_addr
[i
], 0, ETH_ALEN
);
331 rtlpriv
->sec
.hwsec_cam_bitmap
&= ~(BIT(0) << i
);
332 pr_info("&&&&&&&&&del entry %d\n", i
);
337 EXPORT_SYMBOL(stg_rtl_cam_del_entry
);