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 * 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
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
21 * Contact Information:
22 * wlanfae <wlanfae@realtek.com>
23 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
24 * Hsinchu 300, Taiwan.
26 * Larry Finger <Larry.Finger@lwfinger.net>
28 *****************************************************************************/
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
35 void rtl_cam_reset_sec_info(struct ieee80211_hw *hw)
37 struct rtl_priv *rtlpriv = rtl_priv(hw);
39 rtlpriv->sec.use_defaultkey = false;
40 rtlpriv->sec.pairwise_enc_algorithm = NO_ENCRYPTION;
41 rtlpriv->sec.group_enc_algorithm = NO_ENCRYPTION;
42 memset(rtlpriv->sec.key_buf, 0, KEY_BUF_SIZE * MAX_KEY_LEN);
43 memset(rtlpriv->sec.key_len, 0, KEY_BUF_SIZE);
44 rtlpriv->sec.pairwise_key = NULL;
47 static void rtl_cam_program_entry(struct ieee80211_hw *hw, u32 entry_no,
48 u8 *mac_addr, u8 *key_cont_128, u16 us_config)
50 struct rtl_priv *rtlpriv = rtl_priv(hw);
53 u32 target_content = 0;
56 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
57 ("key_cont_128:\n %x:%x:%x:%x:%x:%x\n",
58 key_cont_128[0], key_cont_128[1],
59 key_cont_128[2], key_cont_128[3],
60 key_cont_128[4], key_cont_128[5]));
62 for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
63 target_command = entry_i + CAM_CONTENT_COUNT * entry_no;
64 target_command = target_command | BIT(31) | BIT(16);
67 target_content = (u32) (*(mac_addr + 0)) << 16 |
68 (u32) (*(mac_addr + 1)) << 24 | (u32) us_config;
70 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
72 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
75 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
77 rtlpriv->cfg->maps[WCAMI], target_content));
78 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
79 ("The Key ID is %d\n", entry_no));
80 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
82 rtlpriv->cfg->maps[RWCAM], target_command));
84 } else if (entry_i == 1) {
86 target_content = (u32) (*(mac_addr + 5)) << 24 |
87 (u32) (*(mac_addr + 4)) << 16 |
88 (u32) (*(mac_addr + 3)) << 8 |
89 (u32) (*(mac_addr + 2));
91 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
93 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
96 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
97 ("WRITE A4: %x\n", target_content));
98 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
99 ("WRITE A0: %x\n", target_command));
104 (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 3)) <<
105 24 | (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 2))
107 (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 1)) << 8
108 | (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 0));
110 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
112 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
116 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
117 ("WRITE A4: %x\n", target_content));
118 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
119 ("WRITE A0: %x\n", target_command));
123 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
124 ("after set key, usconfig:%x\n", us_config));
127 u8 rtl_cam_add_one_entry(struct ieee80211_hw *hw, u8 *mac_addr,
128 u32 ul_key_id, u32 ul_entry_idx, u32 ul_enc_alg,
129 u32 ul_default_key, u8 *key_content)
132 struct rtl_priv *rtlpriv = rtl_priv(hw);
134 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
135 ("EntryNo:%x, ulKeyId=%x, ulEncAlg=%x, "
136 "ulUseDK=%x MacAddr %pM\n",
137 ul_entry_idx, ul_key_id, ul_enc_alg,
138 ul_default_key, mac_addr));
140 if (ul_key_id == TOTAL_CAM_ENTRY) {
141 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
142 ("<=== ulKeyId exceed!\n"));
146 if (ul_default_key == 1) {
147 us_config = CFG_VALID | ((u16) (ul_enc_alg) << 2);
149 us_config = CFG_VALID | ((ul_enc_alg) << 2) | ul_key_id;
152 rtl_cam_program_entry(hw, ul_entry_idx, mac_addr,
153 (u8 *) key_content, us_config);
155 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("<===\n"));
160 EXPORT_SYMBOL(rtl_cam_add_one_entry);
162 int rtl_cam_delete_one_entry(struct ieee80211_hw *hw,
163 u8 *mac_addr, u32 ul_key_id)
166 struct rtl_priv *rtlpriv = rtl_priv(hw);
168 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("key_idx:%d\n", ul_key_id));
170 ul_command = ul_key_id * CAM_CONTENT_COUNT;
171 ul_command = ul_command | BIT(31) | BIT(16);
173 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], 0);
174 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
176 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
177 ("rtl_cam_delete_one_entry(): WRITE A4: %x\n", 0));
178 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
179 ("rtl_cam_delete_one_entry(): WRITE A0: %x\n", ul_command));
184 EXPORT_SYMBOL(rtl_cam_delete_one_entry);
186 void rtl_cam_reset_all_entry(struct ieee80211_hw *hw)
189 struct rtl_priv *rtlpriv = rtl_priv(hw);
191 ul_command = BIT(31) | BIT(30);
192 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
194 EXPORT_SYMBOL(rtl_cam_reset_all_entry);
196 void rtl_cam_mark_invalid(struct ieee80211_hw *hw, u8 uc_index)
198 struct rtl_priv *rtlpriv = rtl_priv(hw);
202 u32 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
204 switch (rtlpriv->sec.pairwise_enc_algorithm) {
205 case WEP40_ENCRYPTION:
206 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
208 case WEP104_ENCRYPTION:
209 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
211 case TKIP_ENCRYPTION:
212 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
214 case AESCCMP_ENCRYPTION:
215 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
218 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
221 ul_content = (uc_index & 3) | ((u16) (ul_enc_algo) << 2);
223 ul_content |= BIT(15);
224 ul_command = CAM_CONTENT_COUNT * uc_index;
225 ul_command = ul_command | BIT(31) | BIT(16);
227 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
228 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
230 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
231 ("rtl_cam_mark_invalid(): WRITE A4: %x\n", ul_content));
232 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
233 ("rtl_cam_mark_invalid(): WRITE A0: %x\n", ul_command));
235 EXPORT_SYMBOL(rtl_cam_mark_invalid);
237 void rtl_cam_empty_entry(struct ieee80211_hw *hw, u8 uc_index)
239 struct rtl_priv *rtlpriv = rtl_priv(hw);
243 u32 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
246 switch (rtlpriv->sec.pairwise_enc_algorithm) {
247 case WEP40_ENCRYPTION:
248 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
250 case WEP104_ENCRYPTION:
251 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
253 case TKIP_ENCRYPTION:
254 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
256 case AESCCMP_ENCRYPTION:
257 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
260 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
263 for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
267 (uc_index & 0x03) | ((u16) (ul_encalgo) << 2);
268 ul_content |= BIT(15);
274 ul_command = CAM_CONTENT_COUNT * uc_index + entry_i;
275 ul_command = ul_command | BIT(31) | BIT(16);
277 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
278 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
280 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
281 ("rtl_cam_empty_entry(): WRITE A4: %x\n",
283 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
284 ("rtl_cam_empty_entry(): WRITE A0: %x\n",
289 EXPORT_SYMBOL(rtl_cam_empty_entry);
291 u8 rtl_cam_get_free_entry(struct ieee80211_hw *hw, u8 *sta_addr)
293 struct rtl_priv *rtlpriv = rtl_priv(hw);
294 u32 bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> 4;
298 if (NULL == sta_addr) {
299 RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG,
300 ("sta_addr is NULL.\n"));
301 return TOTAL_CAM_ENTRY;
303 /* Does STA already exist? */
304 for (i = 4; i < TOTAL_CAM_ENTRY; i++) {
305 addr = rtlpriv->sec.hwsec_cam_sta_addr[i];
306 if (memcmp(addr, sta_addr, ETH_ALEN) == 0)
309 /* Get a free CAM entry. */
310 for (entry_idx = 4; entry_idx < TOTAL_CAM_ENTRY; entry_idx++) {
311 if ((bitmap & BIT(0)) == 0) {
312 RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG,
313 ("-----hwsec_cam_bitmap: 0x%x entry_idx=%d\n",
314 rtlpriv->sec.hwsec_cam_bitmap, entry_idx));
315 rtlpriv->sec.hwsec_cam_bitmap |= BIT(0) << entry_idx;
316 memcpy(rtlpriv->sec.hwsec_cam_sta_addr[entry_idx],
320 bitmap = bitmap >> 1;
322 return TOTAL_CAM_ENTRY;
324 EXPORT_SYMBOL(rtl_cam_get_free_entry);
326 void rtl_cam_del_entry(struct ieee80211_hw *hw, u8 *sta_addr)
328 struct rtl_priv *rtlpriv = rtl_priv(hw);
332 if (NULL == sta_addr) {
333 RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG,
334 ("sta_addr is NULL.\n"));
337 if ((sta_addr[0]|sta_addr[1]|sta_addr[2]|sta_addr[3]|\
338 sta_addr[4]|sta_addr[5]) == 0) {
339 RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG,
340 ("sta_addr is 00:00:00:00:00:00.\n"));
343 /* Does STA already exist? */
344 for (i = 4; i < TOTAL_CAM_ENTRY; i++) {
345 addr = rtlpriv->sec.hwsec_cam_sta_addr[i];
346 bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> i;
347 if (((bitmap & BIT(0)) == BIT(0)) &&
348 (memcmp(addr, sta_addr, ETH_ALEN) == 0)) {
349 /* Remove from HW Security CAM */
350 memset(rtlpriv->sec.hwsec_cam_sta_addr[i], 0, ETH_ALEN);
351 rtlpriv->sec.hwsec_cam_bitmap &= ~(BIT(0) << i);
352 pr_info("&&&&&&&&&del entry %d\n", i);
357 EXPORT_SYMBOL(rtl_cam_del_entry);