1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /* Copyright(c) 2019-2020 Realtek Corporation
3 */
4
5 #include "cam.h"
6 #include "debug.h"
7 #include "fw.h"
8 #include "mac.h"
9
10 static struct sk_buff *
rtw89_cam_get_sec_key_cmd(struct rtw89_dev * rtwdev,struct rtw89_sec_cam_entry * sec_cam,bool ext_key)11 rtw89_cam_get_sec_key_cmd(struct rtw89_dev *rtwdev,
12 struct rtw89_sec_cam_entry *sec_cam,
13 bool ext_key)
14 {
15 struct sk_buff *skb;
16 u32 cmd_len = H2C_SEC_CAM_LEN;
17 u32 key32[4];
18 u8 *cmd;
19 int i, j;
20
21 skb = rtw89_fw_h2c_alloc_skb_with_hdr(rtwdev, cmd_len);
22 if (!skb)
23 return NULL;
24
25 skb_put_zero(skb, cmd_len);
26
27 for (i = 0; i < 4; i++) {
28 j = i * 4;
29 j += ext_key ? 16 : 0;
30 key32[i] = FIELD_PREP(GENMASK(7, 0), sec_cam->key[j + 0]) |
31 FIELD_PREP(GENMASK(15, 8), sec_cam->key[j + 1]) |
32 FIELD_PREP(GENMASK(23, 16), sec_cam->key[j + 2]) |
33 FIELD_PREP(GENMASK(31, 24), sec_cam->key[j + 3]);
34 }
35
36 cmd = skb->data;
37 RTW89_SET_FWCMD_SEC_IDX(cmd, sec_cam->sec_cam_idx + (ext_key ? 1 : 0));
38 RTW89_SET_FWCMD_SEC_OFFSET(cmd, sec_cam->offset);
39 RTW89_SET_FWCMD_SEC_LEN(cmd, sec_cam->len);
40 RTW89_SET_FWCMD_SEC_TYPE(cmd, sec_cam->type);
41 RTW89_SET_FWCMD_SEC_EXT_KEY(cmd, ext_key);
42 RTW89_SET_FWCMD_SEC_SPP_MODE(cmd, sec_cam->spp_mode);
43 RTW89_SET_FWCMD_SEC_KEY0(cmd, key32[0]);
44 RTW89_SET_FWCMD_SEC_KEY1(cmd, key32[1]);
45 RTW89_SET_FWCMD_SEC_KEY2(cmd, key32[2]);
46 RTW89_SET_FWCMD_SEC_KEY3(cmd, key32[3]);
47
48 return skb;
49 }
50
rtw89_cam_send_sec_key_cmd(struct rtw89_dev * rtwdev,struct rtw89_sec_cam_entry * sec_cam)51 static int rtw89_cam_send_sec_key_cmd(struct rtw89_dev *rtwdev,
52 struct rtw89_sec_cam_entry *sec_cam)
53 {
54 struct sk_buff *skb, *ext_skb;
55 int ret;
56
57 skb = rtw89_cam_get_sec_key_cmd(rtwdev, sec_cam, false);
58 if (!skb) {
59 rtw89_err(rtwdev, "failed to get sec key command\n");
60 return -ENOMEM;
61 }
62
63 rtw89_h2c_pkt_set_hdr(rtwdev, skb,
64 FWCMD_TYPE_H2C,
65 H2C_CAT_MAC,
66 H2C_CL_MAC_SEC_CAM,
67 H2C_FUNC_MAC_SEC_UPD, 1, 0,
68 H2C_SEC_CAM_LEN);
69 ret = rtw89_h2c_tx(rtwdev, skb, false);
70 if (ret) {
71 rtw89_err(rtwdev, "failed to send sec key h2c: %d\n", ret);
72 dev_kfree_skb(skb);
73 return ret;
74 }
75
76 if (!sec_cam->ext_key)
77 return 0;
78
79 ext_skb = rtw89_cam_get_sec_key_cmd(rtwdev, sec_cam, true);
80 if (!ext_skb) {
81 rtw89_err(rtwdev, "failed to get ext sec key command\n");
82 return -ENOMEM;
83 }
84
85 rtw89_h2c_pkt_set_hdr(rtwdev, ext_skb,
86 FWCMD_TYPE_H2C,
87 H2C_CAT_MAC,
88 H2C_CL_MAC_SEC_CAM,
89 H2C_FUNC_MAC_SEC_UPD,
90 1, 0, H2C_SEC_CAM_LEN);
91 ret = rtw89_h2c_tx(rtwdev, ext_skb, false);
92 if (ret) {
93 rtw89_err(rtwdev, "failed to send ext sec key h2c: %d\n", ret);
94 dev_kfree_skb(ext_skb);
95 return ret;
96 }
97
98 return 0;
99 }
100
rtw89_cam_get_avail_sec_cam(struct rtw89_dev * rtwdev,u8 * sec_cam_idx,bool ext_key)101 static int rtw89_cam_get_avail_sec_cam(struct rtw89_dev *rtwdev,
102 u8 *sec_cam_idx, bool ext_key)
103 {
104 const struct rtw89_chip_info *chip = rtwdev->chip;
105 struct rtw89_cam_info *cam_info = &rtwdev->cam_info;
106 u8 sec_cam_num = chip->scam_num;
107 u8 idx = 0;
108
109 if (!ext_key) {
110 idx = find_first_zero_bit(cam_info->sec_cam_map, sec_cam_num);
111 if (idx >= sec_cam_num)
112 return -EBUSY;
113
114 set_bit(idx, cam_info->sec_cam_map);
115 *sec_cam_idx = idx;
116
117 return 0;
118 }
119
120 again:
121 idx = find_next_zero_bit(cam_info->sec_cam_map, sec_cam_num, idx);
122 if (idx >= sec_cam_num - 1)
123 return -EBUSY;
124 /* ext keys need two cam entries for 256-bit key */
125 if (test_bit(idx + 1, cam_info->sec_cam_map)) {
126 idx++;
127 goto again;
128 }
129
130 set_bit(idx, cam_info->sec_cam_map);
131 set_bit(idx + 1, cam_info->sec_cam_map);
132 *sec_cam_idx = idx;
133
134 return 0;
135 }
136
rtw89_cam_get_addr_cam_key_idx(struct rtw89_addr_cam_entry * addr_cam,struct rtw89_sec_cam_entry * sec_cam,struct ieee80211_key_conf * key,u8 * key_idx)137 static int rtw89_cam_get_addr_cam_key_idx(struct rtw89_addr_cam_entry *addr_cam,
138 struct rtw89_sec_cam_entry *sec_cam,
139 struct ieee80211_key_conf *key,
140 u8 *key_idx)
141 {
142 u8 idx;
143
144 /* RTW89_ADDR_CAM_SEC_NONE : not enabled
145 * RTW89_ADDR_CAM_SEC_ALL_UNI : 0 - 6 unicast
146 * RTW89_ADDR_CAM_SEC_NORMAL : 0 - 1 unicast, 2 - 4 group, 5 - 6 BIP
147 * RTW89_ADDR_CAM_SEC_4GROUP : 0 - 1 unicast, 2 - 5 group, 6 BIP
148 */
149 switch (addr_cam->sec_ent_mode) {
150 case RTW89_ADDR_CAM_SEC_NONE:
151 return -EINVAL;
152 case RTW89_ADDR_CAM_SEC_ALL_UNI:
153 if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
154 return -EINVAL;
155 idx = find_first_zero_bit(addr_cam->sec_cam_map,
156 RTW89_SEC_CAM_IN_ADDR_CAM);
157 if (idx >= RTW89_SEC_CAM_IN_ADDR_CAM)
158 return -EBUSY;
159 *key_idx = idx;
160 break;
161 case RTW89_ADDR_CAM_SEC_NORMAL:
162 if (sec_cam->type == RTW89_SEC_KEY_TYPE_BIP_CCMP128) {
163 idx = find_next_zero_bit(addr_cam->sec_cam_map,
164 RTW89_SEC_CAM_IN_ADDR_CAM, 5);
165 if (idx > 6)
166 return -EBUSY;
167 *key_idx = idx;
168 break;
169 }
170
171 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
172 idx = find_next_zero_bit(addr_cam->sec_cam_map,
173 RTW89_SEC_CAM_IN_ADDR_CAM, 0);
174 if (idx > 1)
175 return -EBUSY;
176 *key_idx = idx;
177 break;
178 }
179
180 /* Group keys */
181 idx = find_next_zero_bit(addr_cam->sec_cam_map,
182 RTW89_SEC_CAM_IN_ADDR_CAM, 2);
183 if (idx > 4)
184 return -EBUSY;
185 *key_idx = idx;
186 break;
187 case RTW89_ADDR_CAM_SEC_4GROUP:
188 if (sec_cam->type == RTW89_SEC_KEY_TYPE_BIP_CCMP128) {
189 if (test_bit(6, addr_cam->sec_cam_map))
190 return -EINVAL;
191 *key_idx = 6;
192 break;
193 }
194
195 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
196 idx = find_next_zero_bit(addr_cam->sec_cam_map,
197 RTW89_SEC_CAM_IN_ADDR_CAM, 0);
198 if (idx > 1)
199 return -EBUSY;
200 *key_idx = idx;
201 break;
202 }
203
204 /* Group keys */
205 idx = find_next_zero_bit(addr_cam->sec_cam_map,
206 RTW89_SEC_CAM_IN_ADDR_CAM, 2);
207 if (idx > 5)
208 return -EBUSY;
209 *key_idx = idx;
210 break;
211 }
212
213 return 0;
214 }
215
rtw89_cam_attach_sec_cam(struct rtw89_dev * rtwdev,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,struct rtw89_sec_cam_entry * sec_cam)216 static int rtw89_cam_attach_sec_cam(struct rtw89_dev *rtwdev,
217 struct ieee80211_vif *vif,
218 struct ieee80211_sta *sta,
219 struct ieee80211_key_conf *key,
220 struct rtw89_sec_cam_entry *sec_cam)
221 {
222 struct rtw89_sta *rtwsta = sta_to_rtwsta_safe(sta);
223 struct rtw89_vif *rtwvif;
224 struct rtw89_addr_cam_entry *addr_cam;
225 u8 key_idx = 0;
226 int ret;
227
228 if (!vif) {
229 rtw89_err(rtwdev, "No iface for adding sec cam\n");
230 return -EINVAL;
231 }
232
233 rtwvif = (struct rtw89_vif *)vif->drv_priv;
234 addr_cam = rtw89_get_addr_cam_of(rtwvif, rtwsta);
235 ret = rtw89_cam_get_addr_cam_key_idx(addr_cam, sec_cam, key, &key_idx);
236 if (ret) {
237 rtw89_err(rtwdev, "failed to get addr cam key idx %d, %d\n",
238 addr_cam->sec_ent_mode, sec_cam->type);
239 return ret;
240 }
241
242 key->hw_key_idx = key_idx;
243 addr_cam->sec_ent_keyid[key_idx] = key->keyidx;
244 addr_cam->sec_ent[key_idx] = sec_cam->sec_cam_idx;
245 addr_cam->sec_entries[key_idx] = sec_cam;
246 set_bit(key_idx, addr_cam->sec_cam_map);
247 ret = rtw89_chip_h2c_dctl_sec_cam(rtwdev, rtwvif, rtwsta);
248 if (ret) {
249 rtw89_err(rtwdev, "failed to update dctl cam sec entry: %d\n",
250 ret);
251 return ret;
252 }
253 ret = rtw89_fw_h2c_cam(rtwdev, rtwvif, rtwsta, NULL);
254 if (ret) {
255 rtw89_err(rtwdev, "failed to update addr cam sec entry: %d\n",
256 ret);
257 clear_bit(key_idx, addr_cam->sec_cam_map);
258 addr_cam->sec_entries[key_idx] = NULL;
259 return ret;
260 }
261
262 return 0;
263 }
264
rtw89_cam_sec_key_install(struct rtw89_dev * rtwdev,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,u8 hw_key_type,bool ext_key)265 static int rtw89_cam_sec_key_install(struct rtw89_dev *rtwdev,
266 struct ieee80211_vif *vif,
267 struct ieee80211_sta *sta,
268 struct ieee80211_key_conf *key,
269 u8 hw_key_type, bool ext_key)
270 {
271 struct rtw89_sec_cam_entry *sec_cam = NULL;
272 struct rtw89_cam_info *cam_info = &rtwdev->cam_info;
273 u8 sec_cam_idx;
274 int ret;
275
276 /* maximum key length 256-bit */
277 if (key->keylen > 32) {
278 rtw89_err(rtwdev, "invalid sec key length %d\n", key->keylen);
279 return -EINVAL;
280 }
281
282 ret = rtw89_cam_get_avail_sec_cam(rtwdev, &sec_cam_idx, ext_key);
283 if (ret) {
284 rtw89_warn(rtwdev, "no available sec cam: %d ext: %d\n",
285 ret, ext_key);
286 return ret;
287 }
288
289 sec_cam = kzalloc(sizeof(*sec_cam), GFP_KERNEL);
290 if (!sec_cam) {
291 ret = -ENOMEM;
292 goto err_release_cam;
293 }
294
295 sec_cam->sec_cam_idx = sec_cam_idx;
296 sec_cam->type = hw_key_type;
297 sec_cam->len = RTW89_SEC_CAM_LEN;
298 sec_cam->ext_key = ext_key;
299 memcpy(sec_cam->key, key->key, key->keylen);
300 ret = rtw89_cam_send_sec_key_cmd(rtwdev, sec_cam);
301 if (ret) {
302 rtw89_err(rtwdev, "failed to send sec key cmd: %d\n", ret);
303 goto err_release_cam;
304 }
305
306 /* associate with addr cam */
307 ret = rtw89_cam_attach_sec_cam(rtwdev, vif, sta, key, sec_cam);
308 if (ret) {
309 rtw89_err(rtwdev, "failed to attach sec cam: %d\n", ret);
310 goto err_release_cam;
311 }
312
313 return 0;
314
315 err_release_cam:
316 kfree(sec_cam);
317 clear_bit(sec_cam_idx, cam_info->sec_cam_map);
318 if (ext_key)
319 clear_bit(sec_cam_idx + 1, cam_info->sec_cam_map);
320
321 return ret;
322 }
323
rtw89_cam_sec_key_add(struct rtw89_dev * rtwdev,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)324 int rtw89_cam_sec_key_add(struct rtw89_dev *rtwdev,
325 struct ieee80211_vif *vif,
326 struct ieee80211_sta *sta,
327 struct ieee80211_key_conf *key)
328 {
329 const struct rtw89_chip_info *chip = rtwdev->chip;
330 u8 hw_key_type;
331 bool ext_key = false;
332 int ret;
333
334 switch (key->cipher) {
335 case WLAN_CIPHER_SUITE_WEP40:
336 hw_key_type = RTW89_SEC_KEY_TYPE_WEP40;
337 break;
338 case WLAN_CIPHER_SUITE_WEP104:
339 hw_key_type = RTW89_SEC_KEY_TYPE_WEP104;
340 break;
341 case WLAN_CIPHER_SUITE_CCMP:
342 hw_key_type = RTW89_SEC_KEY_TYPE_CCMP128;
343 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
344 break;
345 case WLAN_CIPHER_SUITE_CCMP_256:
346 hw_key_type = RTW89_SEC_KEY_TYPE_CCMP256;
347 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
348 ext_key = true;
349 break;
350 case WLAN_CIPHER_SUITE_GCMP:
351 hw_key_type = RTW89_SEC_KEY_TYPE_GCMP128;
352 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
353 break;
354 case WLAN_CIPHER_SUITE_GCMP_256:
355 hw_key_type = RTW89_SEC_KEY_TYPE_GCMP256;
356 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
357 ext_key = true;
358 break;
359 default:
360 return -EOPNOTSUPP;
361 }
362
363 if (!chip->hw_sec_hdr)
364 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
365
366 ret = rtw89_cam_sec_key_install(rtwdev, vif, sta, key, hw_key_type,
367 ext_key);
368 if (ret) {
369 rtw89_err(rtwdev, "failed to install key type %d ext %d: %d\n",
370 hw_key_type, ext_key, ret);
371 return ret;
372 }
373
374 return 0;
375 }
376
rtw89_cam_sec_key_del(struct rtw89_dev * rtwdev,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,bool inform_fw)377 int rtw89_cam_sec_key_del(struct rtw89_dev *rtwdev,
378 struct ieee80211_vif *vif,
379 struct ieee80211_sta *sta,
380 struct ieee80211_key_conf *key,
381 bool inform_fw)
382 {
383 struct rtw89_sta *rtwsta = sta_to_rtwsta_safe(sta);
384 struct rtw89_cam_info *cam_info = &rtwdev->cam_info;
385 struct rtw89_vif *rtwvif;
386 struct rtw89_addr_cam_entry *addr_cam;
387 struct rtw89_sec_cam_entry *sec_cam;
388 u8 key_idx = key->hw_key_idx;
389 u8 sec_cam_idx;
390 int ret = 0;
391
392 if (!vif) {
393 rtw89_err(rtwdev, "No iface for deleting sec cam\n");
394 return -EINVAL;
395 }
396
397 rtwvif = (struct rtw89_vif *)vif->drv_priv;
398 addr_cam = rtw89_get_addr_cam_of(rtwvif, rtwsta);
399 sec_cam = addr_cam->sec_entries[key_idx];
400 if (!sec_cam)
401 return -EINVAL;
402
403 /* detach sec cam from addr cam */
404 clear_bit(key_idx, addr_cam->sec_cam_map);
405 addr_cam->sec_entries[key_idx] = NULL;
406 if (inform_fw) {
407 ret = rtw89_chip_h2c_dctl_sec_cam(rtwdev, rtwvif, rtwsta);
408 if (ret)
409 rtw89_err(rtwdev, "failed to update dctl cam del key: %d\n", ret);
410 ret = rtw89_fw_h2c_cam(rtwdev, rtwvif, rtwsta, NULL);
411 if (ret)
412 rtw89_err(rtwdev, "failed to update cam del key: %d\n", ret);
413 }
414
415 /* clear valid bit in addr cam will disable sec cam,
416 * so we don't need to send H2C command again
417 */
418 sec_cam_idx = sec_cam->sec_cam_idx;
419 clear_bit(sec_cam_idx, cam_info->sec_cam_map);
420 if (sec_cam->ext_key)
421 clear_bit(sec_cam_idx + 1, cam_info->sec_cam_map);
422
423 kfree(sec_cam);
424
425 return ret;
426 }
427
rtw89_cam_reset_key_iter(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * data)428 static void rtw89_cam_reset_key_iter(struct ieee80211_hw *hw,
429 struct ieee80211_vif *vif,
430 struct ieee80211_sta *sta,
431 struct ieee80211_key_conf *key,
432 void *data)
433 {
434 struct rtw89_dev *rtwdev = (struct rtw89_dev *)data;
435
436 rtw89_cam_sec_key_del(rtwdev, vif, sta, key, false);
437 }
438
rtw89_cam_deinit_addr_cam(struct rtw89_dev * rtwdev,struct rtw89_addr_cam_entry * addr_cam)439 void rtw89_cam_deinit_addr_cam(struct rtw89_dev *rtwdev,
440 struct rtw89_addr_cam_entry *addr_cam)
441 {
442 struct rtw89_cam_info *cam_info = &rtwdev->cam_info;
443
444 addr_cam->valid = false;
445 clear_bit(addr_cam->addr_cam_idx, cam_info->addr_cam_map);
446 }
447
rtw89_cam_deinit_bssid_cam(struct rtw89_dev * rtwdev,struct rtw89_bssid_cam_entry * bssid_cam)448 void rtw89_cam_deinit_bssid_cam(struct rtw89_dev *rtwdev,
449 struct rtw89_bssid_cam_entry *bssid_cam)
450 {
451 struct rtw89_cam_info *cam_info = &rtwdev->cam_info;
452
453 bssid_cam->valid = false;
454 clear_bit(bssid_cam->bssid_cam_idx, cam_info->bssid_cam_map);
455 }
456
rtw89_cam_deinit(struct rtw89_dev * rtwdev,struct rtw89_vif * rtwvif)457 void rtw89_cam_deinit(struct rtw89_dev *rtwdev, struct rtw89_vif *rtwvif)
458 {
459 struct rtw89_addr_cam_entry *addr_cam = &rtwvif->addr_cam;
460 struct rtw89_bssid_cam_entry *bssid_cam = &rtwvif->bssid_cam;
461
462 rtw89_cam_deinit_addr_cam(rtwdev, addr_cam);
463 rtw89_cam_deinit_bssid_cam(rtwdev, bssid_cam);
464 }
465
rtw89_cam_reset_keys(struct rtw89_dev * rtwdev)466 void rtw89_cam_reset_keys(struct rtw89_dev *rtwdev)
467 {
468 rcu_read_lock();
469 ieee80211_iter_keys_rcu(rtwdev->hw, NULL, rtw89_cam_reset_key_iter, rtwdev);
470 rcu_read_unlock();
471 }
472
rtw89_cam_get_avail_addr_cam(struct rtw89_dev * rtwdev,u8 * addr_cam_idx)473 static int rtw89_cam_get_avail_addr_cam(struct rtw89_dev *rtwdev,
474 u8 *addr_cam_idx)
475 {
476 const struct rtw89_chip_info *chip = rtwdev->chip;
477 struct rtw89_cam_info *cam_info = &rtwdev->cam_info;
478 u8 addr_cam_num = chip->acam_num;
479 u8 idx;
480
481 idx = find_first_zero_bit(cam_info->addr_cam_map, addr_cam_num);
482 if (idx >= addr_cam_num)
483 return -EBUSY;
484
485 set_bit(idx, cam_info->addr_cam_map);
486 *addr_cam_idx = idx;
487
488 return 0;
489 }
490
rtw89_cam_init_addr_cam(struct rtw89_dev * rtwdev,struct rtw89_addr_cam_entry * addr_cam,const struct rtw89_bssid_cam_entry * bssid_cam)491 int rtw89_cam_init_addr_cam(struct rtw89_dev *rtwdev,
492 struct rtw89_addr_cam_entry *addr_cam,
493 const struct rtw89_bssid_cam_entry *bssid_cam)
494 {
495 u8 addr_cam_idx;
496 int i;
497 int ret;
498
499 if (unlikely(addr_cam->valid)) {
500 rtw89_debug(rtwdev, RTW89_DBG_FW,
501 "addr cam is already valid; skip init\n");
502 return 0;
503 }
504
505 ret = rtw89_cam_get_avail_addr_cam(rtwdev, &addr_cam_idx);
506 if (ret) {
507 rtw89_err(rtwdev, "failed to get available addr cam\n");
508 return ret;
509 }
510
511 addr_cam->addr_cam_idx = addr_cam_idx;
512 addr_cam->len = ADDR_CAM_ENT_SIZE;
513 addr_cam->offset = 0;
514 addr_cam->valid = true;
515 addr_cam->addr_mask = 0;
516 addr_cam->mask_sel = RTW89_NO_MSK;
517 addr_cam->sec_ent_mode = RTW89_ADDR_CAM_SEC_NORMAL;
518 bitmap_zero(addr_cam->sec_cam_map, RTW89_SEC_CAM_IN_ADDR_CAM);
519
520 for (i = 0; i < RTW89_SEC_CAM_IN_ADDR_CAM; i++) {
521 addr_cam->sec_ent_keyid[i] = 0;
522 addr_cam->sec_ent[i] = 0;
523 }
524
525 /* associate addr cam with bssid cam */
526 addr_cam->bssid_cam_idx = bssid_cam->bssid_cam_idx;
527
528 return 0;
529 }
530
rtw89_cam_get_avail_bssid_cam(struct rtw89_dev * rtwdev,u8 * bssid_cam_idx)531 static int rtw89_cam_get_avail_bssid_cam(struct rtw89_dev *rtwdev,
532 u8 *bssid_cam_idx)
533 {
534 const struct rtw89_chip_info *chip = rtwdev->chip;
535 struct rtw89_cam_info *cam_info = &rtwdev->cam_info;
536 u8 bssid_cam_num = chip->bcam_num;
537 u8 idx;
538
539 idx = find_first_zero_bit(cam_info->bssid_cam_map, bssid_cam_num);
540 if (idx >= bssid_cam_num)
541 return -EBUSY;
542
543 set_bit(idx, cam_info->bssid_cam_map);
544 *bssid_cam_idx = idx;
545
546 return 0;
547 }
548
rtw89_cam_init_bssid_cam(struct rtw89_dev * rtwdev,struct rtw89_vif * rtwvif,struct rtw89_bssid_cam_entry * bssid_cam,const u8 * bssid)549 int rtw89_cam_init_bssid_cam(struct rtw89_dev *rtwdev,
550 struct rtw89_vif *rtwvif,
551 struct rtw89_bssid_cam_entry *bssid_cam,
552 const u8 *bssid)
553 {
554 u8 bssid_cam_idx;
555 int ret;
556
557 if (unlikely(bssid_cam->valid)) {
558 rtw89_debug(rtwdev, RTW89_DBG_FW,
559 "bssid cam is already valid; skip init\n");
560 return 0;
561 }
562
563 ret = rtw89_cam_get_avail_bssid_cam(rtwdev, &bssid_cam_idx);
564 if (ret) {
565 rtw89_err(rtwdev, "failed to get available bssid cam\n");
566 return ret;
567 }
568
569 bssid_cam->bssid_cam_idx = bssid_cam_idx;
570 bssid_cam->phy_idx = rtwvif->phy_idx;
571 bssid_cam->len = BSSID_CAM_ENT_SIZE;
572 bssid_cam->offset = 0;
573 bssid_cam->valid = true;
574 ether_addr_copy(bssid_cam->bssid, bssid);
575
576 return 0;
577 }
578
rtw89_cam_bssid_changed(struct rtw89_dev * rtwdev,struct rtw89_vif * rtwvif)579 void rtw89_cam_bssid_changed(struct rtw89_dev *rtwdev, struct rtw89_vif *rtwvif)
580 {
581 struct rtw89_bssid_cam_entry *bssid_cam = &rtwvif->bssid_cam;
582
583 ether_addr_copy(bssid_cam->bssid, rtwvif->bssid);
584 }
585
rtw89_cam_init(struct rtw89_dev * rtwdev,struct rtw89_vif * rtwvif)586 int rtw89_cam_init(struct rtw89_dev *rtwdev, struct rtw89_vif *rtwvif)
587 {
588 struct rtw89_addr_cam_entry *addr_cam = &rtwvif->addr_cam;
589 struct rtw89_bssid_cam_entry *bssid_cam = &rtwvif->bssid_cam;
590 int ret;
591
592 ret = rtw89_cam_init_bssid_cam(rtwdev, rtwvif, bssid_cam, rtwvif->bssid);
593 if (ret) {
594 rtw89_err(rtwdev, "failed to init bssid cam\n");
595 return ret;
596 }
597
598 ret = rtw89_cam_init_addr_cam(rtwdev, addr_cam, bssid_cam);
599 if (ret) {
600 rtw89_err(rtwdev, "failed to init addr cam\n");
601 return ret;
602 }
603
604 return 0;
605 }
606
rtw89_cam_fill_bssid_cam_info(struct rtw89_dev * rtwdev,struct rtw89_vif * rtwvif,struct rtw89_sta * rtwsta,u8 * cmd)607 int rtw89_cam_fill_bssid_cam_info(struct rtw89_dev *rtwdev,
608 struct rtw89_vif *rtwvif,
609 struct rtw89_sta *rtwsta, u8 *cmd)
610 {
611 struct ieee80211_vif *vif = rtwvif_to_vif(rtwvif);
612 struct rtw89_bssid_cam_entry *bssid_cam = rtw89_get_bssid_cam_of(rtwvif, rtwsta);
613 u8 bss_color = vif->bss_conf.he_bss_color.color;
614 u8 bss_mask;
615
616 if (vif->bss_conf.nontransmitted)
617 bss_mask = RTW89_BSSID_MATCH_5_BYTES;
618 else
619 bss_mask = RTW89_BSSID_MATCH_ALL;
620
621 FWCMD_SET_ADDR_BSSID_IDX(cmd, bssid_cam->bssid_cam_idx);
622 FWCMD_SET_ADDR_BSSID_OFFSET(cmd, bssid_cam->offset);
623 FWCMD_SET_ADDR_BSSID_LEN(cmd, bssid_cam->len);
624 FWCMD_SET_ADDR_BSSID_VALID(cmd, bssid_cam->valid);
625 FWCMD_SET_ADDR_BSSID_MASK(cmd, bss_mask);
626 FWCMD_SET_ADDR_BSSID_BB_SEL(cmd, bssid_cam->phy_idx);
627 FWCMD_SET_ADDR_BSSID_BSS_COLOR(cmd, bss_color);
628
629 FWCMD_SET_ADDR_BSSID_BSSID0(cmd, bssid_cam->bssid[0]);
630 FWCMD_SET_ADDR_BSSID_BSSID1(cmd, bssid_cam->bssid[1]);
631 FWCMD_SET_ADDR_BSSID_BSSID2(cmd, bssid_cam->bssid[2]);
632 FWCMD_SET_ADDR_BSSID_BSSID3(cmd, bssid_cam->bssid[3]);
633 FWCMD_SET_ADDR_BSSID_BSSID4(cmd, bssid_cam->bssid[4]);
634 FWCMD_SET_ADDR_BSSID_BSSID5(cmd, bssid_cam->bssid[5]);
635
636 return 0;
637 }
638
rtw89_cam_addr_hash(u8 start,const u8 * addr)639 static u8 rtw89_cam_addr_hash(u8 start, const u8 *addr)
640 {
641 u8 hash = 0;
642 u8 i;
643
644 for (i = start; i < ETH_ALEN; i++)
645 hash ^= addr[i];
646
647 return hash;
648 }
649
rtw89_cam_fill_addr_cam_info(struct rtw89_dev * rtwdev,struct rtw89_vif * rtwvif,struct rtw89_sta * rtwsta,const u8 * scan_mac_addr,u8 * cmd)650 void rtw89_cam_fill_addr_cam_info(struct rtw89_dev *rtwdev,
651 struct rtw89_vif *rtwvif,
652 struct rtw89_sta *rtwsta,
653 const u8 *scan_mac_addr,
654 u8 *cmd)
655 {
656 struct ieee80211_vif *vif = rtwvif_to_vif(rtwvif);
657 struct rtw89_addr_cam_entry *addr_cam = rtw89_get_addr_cam_of(rtwvif, rtwsta);
658 struct ieee80211_sta *sta = rtwsta_to_sta_safe(rtwsta);
659 const u8 *sma = scan_mac_addr ? scan_mac_addr : rtwvif->mac_addr;
660 u8 sma_hash, tma_hash, addr_msk_start;
661 u8 sma_start = 0;
662 u8 tma_start = 0;
663 u8 *tma = sta ? sta->addr : rtwvif->bssid;
664
665 if (addr_cam->addr_mask != 0) {
666 addr_msk_start = __ffs(addr_cam->addr_mask);
667 if (addr_cam->mask_sel == RTW89_SMA)
668 sma_start = addr_msk_start;
669 else if (addr_cam->mask_sel == RTW89_TMA)
670 tma_start = addr_msk_start;
671 }
672 sma_hash = rtw89_cam_addr_hash(sma_start, sma);
673 tma_hash = rtw89_cam_addr_hash(tma_start, tma);
674
675 FWCMD_SET_ADDR_IDX(cmd, addr_cam->addr_cam_idx);
676 FWCMD_SET_ADDR_OFFSET(cmd, addr_cam->offset);
677 FWCMD_SET_ADDR_LEN(cmd, addr_cam->len);
678
679 FWCMD_SET_ADDR_VALID(cmd, addr_cam->valid);
680 FWCMD_SET_ADDR_NET_TYPE(cmd, rtwvif->net_type);
681 FWCMD_SET_ADDR_BCN_HIT_COND(cmd, rtwvif->bcn_hit_cond);
682 FWCMD_SET_ADDR_HIT_RULE(cmd, rtwvif->hit_rule);
683 FWCMD_SET_ADDR_BB_SEL(cmd, rtwvif->phy_idx);
684 FWCMD_SET_ADDR_ADDR_MASK(cmd, addr_cam->addr_mask);
685 FWCMD_SET_ADDR_MASK_SEL(cmd, addr_cam->mask_sel);
686 FWCMD_SET_ADDR_SMA_HASH(cmd, sma_hash);
687 FWCMD_SET_ADDR_TMA_HASH(cmd, tma_hash);
688
689 FWCMD_SET_ADDR_BSSID_CAM_IDX(cmd, addr_cam->bssid_cam_idx);
690
691 FWCMD_SET_ADDR_SMA0(cmd, sma[0]);
692 FWCMD_SET_ADDR_SMA1(cmd, sma[1]);
693 FWCMD_SET_ADDR_SMA2(cmd, sma[2]);
694 FWCMD_SET_ADDR_SMA3(cmd, sma[3]);
695 FWCMD_SET_ADDR_SMA4(cmd, sma[4]);
696 FWCMD_SET_ADDR_SMA5(cmd, sma[5]);
697
698 FWCMD_SET_ADDR_TMA0(cmd, tma[0]);
699 FWCMD_SET_ADDR_TMA1(cmd, tma[1]);
700 FWCMD_SET_ADDR_TMA2(cmd, tma[2]);
701 FWCMD_SET_ADDR_TMA3(cmd, tma[3]);
702 FWCMD_SET_ADDR_TMA4(cmd, tma[4]);
703 FWCMD_SET_ADDR_TMA5(cmd, tma[5]);
704
705 FWCMD_SET_ADDR_PORT_INT(cmd, rtwvif->port);
706 FWCMD_SET_ADDR_TSF_SYNC(cmd, rtwvif->port);
707 FWCMD_SET_ADDR_TF_TRS(cmd, rtwvif->trigger);
708 FWCMD_SET_ADDR_LSIG_TXOP(cmd, rtwvif->lsig_txop);
709 FWCMD_SET_ADDR_TGT_IND(cmd, rtwvif->tgt_ind);
710 FWCMD_SET_ADDR_FRM_TGT_IND(cmd, rtwvif->frm_tgt_ind);
711 FWCMD_SET_ADDR_MACID(cmd, rtwsta ? rtwsta->mac_id : rtwvif->mac_id);
712 if (rtwvif->net_type == RTW89_NET_TYPE_INFRA)
713 FWCMD_SET_ADDR_AID12(cmd, vif->cfg.aid & 0xfff);
714 else if (rtwvif->net_type == RTW89_NET_TYPE_AP_MODE)
715 FWCMD_SET_ADDR_AID12(cmd, sta ? sta->aid & 0xfff : 0);
716 FWCMD_SET_ADDR_WOL_PATTERN(cmd, rtwvif->wowlan_pattern);
717 FWCMD_SET_ADDR_WOL_UC(cmd, rtwvif->wowlan_uc);
718 FWCMD_SET_ADDR_WOL_MAGIC(cmd, rtwvif->wowlan_magic);
719 FWCMD_SET_ADDR_WAPI(cmd, addr_cam->wapi);
720 FWCMD_SET_ADDR_SEC_ENT_MODE(cmd, addr_cam->sec_ent_mode);
721 FWCMD_SET_ADDR_SEC_ENT0_KEYID(cmd, addr_cam->sec_ent_keyid[0]);
722 FWCMD_SET_ADDR_SEC_ENT1_KEYID(cmd, addr_cam->sec_ent_keyid[1]);
723 FWCMD_SET_ADDR_SEC_ENT2_KEYID(cmd, addr_cam->sec_ent_keyid[2]);
724 FWCMD_SET_ADDR_SEC_ENT3_KEYID(cmd, addr_cam->sec_ent_keyid[3]);
725 FWCMD_SET_ADDR_SEC_ENT4_KEYID(cmd, addr_cam->sec_ent_keyid[4]);
726 FWCMD_SET_ADDR_SEC_ENT5_KEYID(cmd, addr_cam->sec_ent_keyid[5]);
727 FWCMD_SET_ADDR_SEC_ENT6_KEYID(cmd, addr_cam->sec_ent_keyid[6]);
728
729 FWCMD_SET_ADDR_SEC_ENT_VALID(cmd, addr_cam->sec_cam_map[0] & 0xff);
730 FWCMD_SET_ADDR_SEC_ENT0(cmd, addr_cam->sec_ent[0]);
731 FWCMD_SET_ADDR_SEC_ENT1(cmd, addr_cam->sec_ent[1]);
732 FWCMD_SET_ADDR_SEC_ENT2(cmd, addr_cam->sec_ent[2]);
733 FWCMD_SET_ADDR_SEC_ENT3(cmd, addr_cam->sec_ent[3]);
734 FWCMD_SET_ADDR_SEC_ENT4(cmd, addr_cam->sec_ent[4]);
735 FWCMD_SET_ADDR_SEC_ENT5(cmd, addr_cam->sec_ent[5]);
736 FWCMD_SET_ADDR_SEC_ENT6(cmd, addr_cam->sec_ent[6]);
737 }
738
rtw89_cam_fill_dctl_sec_cam_info_v1(struct rtw89_dev * rtwdev,struct rtw89_vif * rtwvif,struct rtw89_sta * rtwsta,u8 * cmd)739 void rtw89_cam_fill_dctl_sec_cam_info_v1(struct rtw89_dev *rtwdev,
740 struct rtw89_vif *rtwvif,
741 struct rtw89_sta *rtwsta,
742 u8 *cmd)
743 {
744 struct rtw89_addr_cam_entry *addr_cam = rtw89_get_addr_cam_of(rtwvif, rtwsta);
745
746 SET_DCTL_MACID_V1(cmd, rtwsta ? rtwsta->mac_id : rtwvif->mac_id);
747 SET_DCTL_OPERATION_V1(cmd, 1);
748
749 SET_DCTL_SEC_ENT0_KEYID_V1(cmd, addr_cam->sec_ent_keyid[0]);
750 SET_DCTL_SEC_ENT1_KEYID_V1(cmd, addr_cam->sec_ent_keyid[1]);
751 SET_DCTL_SEC_ENT2_KEYID_V1(cmd, addr_cam->sec_ent_keyid[2]);
752 SET_DCTL_SEC_ENT3_KEYID_V1(cmd, addr_cam->sec_ent_keyid[3]);
753 SET_DCTL_SEC_ENT4_KEYID_V1(cmd, addr_cam->sec_ent_keyid[4]);
754 SET_DCTL_SEC_ENT5_KEYID_V1(cmd, addr_cam->sec_ent_keyid[5]);
755 SET_DCTL_SEC_ENT6_KEYID_V1(cmd, addr_cam->sec_ent_keyid[6]);
756
757 SET_DCTL_SEC_ENT_VALID_V1(cmd, addr_cam->sec_cam_map[0] & 0xff);
758 SET_DCTL_SEC_ENT0_V1(cmd, addr_cam->sec_ent[0]);
759 SET_DCTL_SEC_ENT1_V1(cmd, addr_cam->sec_ent[1]);
760 SET_DCTL_SEC_ENT2_V1(cmd, addr_cam->sec_ent[2]);
761 SET_DCTL_SEC_ENT3_V1(cmd, addr_cam->sec_ent[3]);
762 SET_DCTL_SEC_ENT4_V1(cmd, addr_cam->sec_ent[4]);
763 SET_DCTL_SEC_ENT5_V1(cmd, addr_cam->sec_ent[5]);
764 SET_DCTL_SEC_ENT6_V1(cmd, addr_cam->sec_ent[6]);
765 }
766