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