1 /* 2 * Copyright (c) 2004-2011 Atheros Communications Inc. 3 * Copyright (c) 2011-2012 Qualcomm Atheros, Inc. 4 * 5 * Permission to use, copy, modify, and/or distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 19 20 #include <linux/moduleparam.h> 21 #include <linux/inetdevice.h> 22 #include <linux/export.h> 23 #include <linux/sched/signal.h> 24 25 #include "core.h" 26 #include "cfg80211.h" 27 #include "debug.h" 28 #include "hif-ops.h" 29 #include "testmode.h" 30 31 #define RATETAB_ENT(_rate, _rateid, _flags) { \ 32 .bitrate = (_rate), \ 33 .flags = (_flags), \ 34 .hw_value = (_rateid), \ 35 } 36 37 #define CHAN2G(_channel, _freq, _flags) { \ 38 .band = NL80211_BAND_2GHZ, \ 39 .hw_value = (_channel), \ 40 .center_freq = (_freq), \ 41 .flags = (_flags), \ 42 .max_antenna_gain = 0, \ 43 .max_power = 30, \ 44 } 45 46 #define CHAN5G(_channel, _flags) { \ 47 .band = NL80211_BAND_5GHZ, \ 48 .hw_value = (_channel), \ 49 .center_freq = 5000 + (5 * (_channel)), \ 50 .flags = (_flags), \ 51 .max_antenna_gain = 0, \ 52 .max_power = 30, \ 53 } 54 55 #define DEFAULT_BG_SCAN_PERIOD 60 56 57 struct ath6kl_cfg80211_match_probe_ssid { 58 struct cfg80211_ssid ssid; 59 u8 flag; 60 }; 61 62 static struct ieee80211_rate ath6kl_rates[] = { 63 RATETAB_ENT(10, 0x1, 0), 64 RATETAB_ENT(20, 0x2, 0), 65 RATETAB_ENT(55, 0x4, 0), 66 RATETAB_ENT(110, 0x8, 0), 67 RATETAB_ENT(60, 0x10, 0), 68 RATETAB_ENT(90, 0x20, 0), 69 RATETAB_ENT(120, 0x40, 0), 70 RATETAB_ENT(180, 0x80, 0), 71 RATETAB_ENT(240, 0x100, 0), 72 RATETAB_ENT(360, 0x200, 0), 73 RATETAB_ENT(480, 0x400, 0), 74 RATETAB_ENT(540, 0x800, 0), 75 }; 76 77 #define ath6kl_a_rates (ath6kl_rates + 4) 78 #define ath6kl_a_rates_size 8 79 #define ath6kl_g_rates (ath6kl_rates + 0) 80 #define ath6kl_g_rates_size 12 81 82 #define ath6kl_g_htcap IEEE80211_HT_CAP_SGI_20 83 #define ath6kl_a_htcap (IEEE80211_HT_CAP_SUP_WIDTH_20_40 | \ 84 IEEE80211_HT_CAP_SGI_20 | \ 85 IEEE80211_HT_CAP_SGI_40) 86 87 static struct ieee80211_channel ath6kl_2ghz_channels[] = { 88 CHAN2G(1, 2412, 0), 89 CHAN2G(2, 2417, 0), 90 CHAN2G(3, 2422, 0), 91 CHAN2G(4, 2427, 0), 92 CHAN2G(5, 2432, 0), 93 CHAN2G(6, 2437, 0), 94 CHAN2G(7, 2442, 0), 95 CHAN2G(8, 2447, 0), 96 CHAN2G(9, 2452, 0), 97 CHAN2G(10, 2457, 0), 98 CHAN2G(11, 2462, 0), 99 CHAN2G(12, 2467, 0), 100 CHAN2G(13, 2472, 0), 101 CHAN2G(14, 2484, 0), 102 }; 103 104 static struct ieee80211_channel ath6kl_5ghz_a_channels[] = { 105 CHAN5G(36, 0), CHAN5G(40, 0), 106 CHAN5G(44, 0), CHAN5G(48, 0), 107 CHAN5G(52, 0), CHAN5G(56, 0), 108 CHAN5G(60, 0), CHAN5G(64, 0), 109 CHAN5G(100, 0), CHAN5G(104, 0), 110 CHAN5G(108, 0), CHAN5G(112, 0), 111 CHAN5G(116, 0), CHAN5G(120, 0), 112 CHAN5G(124, 0), CHAN5G(128, 0), 113 CHAN5G(132, 0), CHAN5G(136, 0), 114 CHAN5G(140, 0), CHAN5G(149, 0), 115 CHAN5G(153, 0), CHAN5G(157, 0), 116 CHAN5G(161, 0), CHAN5G(165, 0), 117 CHAN5G(184, 0), CHAN5G(188, 0), 118 CHAN5G(192, 0), CHAN5G(196, 0), 119 CHAN5G(200, 0), CHAN5G(204, 0), 120 CHAN5G(208, 0), CHAN5G(212, 0), 121 CHAN5G(216, 0), 122 }; 123 124 static struct ieee80211_supported_band ath6kl_band_2ghz = { 125 .n_channels = ARRAY_SIZE(ath6kl_2ghz_channels), 126 .channels = ath6kl_2ghz_channels, 127 .n_bitrates = ath6kl_g_rates_size, 128 .bitrates = ath6kl_g_rates, 129 .ht_cap.cap = ath6kl_g_htcap, 130 .ht_cap.ht_supported = true, 131 }; 132 133 static struct ieee80211_supported_band ath6kl_band_5ghz = { 134 .n_channels = ARRAY_SIZE(ath6kl_5ghz_a_channels), 135 .channels = ath6kl_5ghz_a_channels, 136 .n_bitrates = ath6kl_a_rates_size, 137 .bitrates = ath6kl_a_rates, 138 .ht_cap.cap = ath6kl_a_htcap, 139 .ht_cap.ht_supported = true, 140 }; 141 142 #define CCKM_KRK_CIPHER_SUITE 0x004096ff /* use for KRK */ 143 144 /* returns true if scheduled scan was stopped */ 145 static bool __ath6kl_cfg80211_sscan_stop(struct ath6kl_vif *vif) 146 { 147 struct ath6kl *ar = vif->ar; 148 149 if (!test_and_clear_bit(SCHED_SCANNING, &vif->flags)) 150 return false; 151 152 del_timer_sync(&vif->sched_scan_timer); 153 154 if (ar->state == ATH6KL_STATE_RECOVERY) 155 return true; 156 157 ath6kl_wmi_enable_sched_scan_cmd(ar->wmi, vif->fw_vif_idx, false); 158 159 return true; 160 } 161 162 static void ath6kl_cfg80211_sscan_disable(struct ath6kl_vif *vif) 163 { 164 struct ath6kl *ar = vif->ar; 165 bool stopped; 166 167 stopped = __ath6kl_cfg80211_sscan_stop(vif); 168 169 if (!stopped) 170 return; 171 172 cfg80211_sched_scan_stopped(ar->wiphy, 0); 173 } 174 175 static int ath6kl_set_wpa_version(struct ath6kl_vif *vif, 176 enum nl80211_wpa_versions wpa_version) 177 { 178 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: %u\n", __func__, wpa_version); 179 180 if (!wpa_version) { 181 vif->auth_mode = NONE_AUTH; 182 } else if (wpa_version & NL80211_WPA_VERSION_2) { 183 vif->auth_mode = WPA2_AUTH; 184 } else if (wpa_version & NL80211_WPA_VERSION_1) { 185 vif->auth_mode = WPA_AUTH; 186 } else { 187 ath6kl_err("%s: %u not supported\n", __func__, wpa_version); 188 return -ENOTSUPP; 189 } 190 191 return 0; 192 } 193 194 static int ath6kl_set_auth_type(struct ath6kl_vif *vif, 195 enum nl80211_auth_type auth_type) 196 { 197 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, auth_type); 198 199 switch (auth_type) { 200 case NL80211_AUTHTYPE_OPEN_SYSTEM: 201 vif->dot11_auth_mode = OPEN_AUTH; 202 break; 203 case NL80211_AUTHTYPE_SHARED_KEY: 204 vif->dot11_auth_mode = SHARED_AUTH; 205 break; 206 case NL80211_AUTHTYPE_NETWORK_EAP: 207 vif->dot11_auth_mode = LEAP_AUTH; 208 break; 209 210 case NL80211_AUTHTYPE_AUTOMATIC: 211 vif->dot11_auth_mode = OPEN_AUTH | SHARED_AUTH; 212 break; 213 214 default: 215 ath6kl_err("%s: 0x%x not supported\n", __func__, auth_type); 216 return -ENOTSUPP; 217 } 218 219 return 0; 220 } 221 222 static int ath6kl_set_cipher(struct ath6kl_vif *vif, u32 cipher, bool ucast) 223 { 224 u8 *ar_cipher = ucast ? &vif->prwise_crypto : &vif->grp_crypto; 225 u8 *ar_cipher_len = ucast ? &vif->prwise_crypto_len : 226 &vif->grp_crypto_len; 227 228 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: cipher 0x%x, ucast %u\n", 229 __func__, cipher, ucast); 230 231 switch (cipher) { 232 case 0: 233 /* our own hack to use value 0 as no crypto used */ 234 *ar_cipher = NONE_CRYPT; 235 *ar_cipher_len = 0; 236 break; 237 case WLAN_CIPHER_SUITE_WEP40: 238 *ar_cipher = WEP_CRYPT; 239 *ar_cipher_len = 5; 240 break; 241 case WLAN_CIPHER_SUITE_WEP104: 242 *ar_cipher = WEP_CRYPT; 243 *ar_cipher_len = 13; 244 break; 245 case WLAN_CIPHER_SUITE_TKIP: 246 *ar_cipher = TKIP_CRYPT; 247 *ar_cipher_len = 0; 248 break; 249 case WLAN_CIPHER_SUITE_CCMP: 250 *ar_cipher = AES_CRYPT; 251 *ar_cipher_len = 0; 252 break; 253 case WLAN_CIPHER_SUITE_SMS4: 254 *ar_cipher = WAPI_CRYPT; 255 *ar_cipher_len = 0; 256 break; 257 default: 258 ath6kl_err("cipher 0x%x not supported\n", cipher); 259 return -ENOTSUPP; 260 } 261 262 return 0; 263 } 264 265 static void ath6kl_set_key_mgmt(struct ath6kl_vif *vif, u32 key_mgmt) 266 { 267 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, key_mgmt); 268 269 if (key_mgmt == WLAN_AKM_SUITE_PSK) { 270 if (vif->auth_mode == WPA_AUTH) 271 vif->auth_mode = WPA_PSK_AUTH; 272 else if (vif->auth_mode == WPA2_AUTH) 273 vif->auth_mode = WPA2_PSK_AUTH; 274 } else if (key_mgmt == 0x00409600) { 275 if (vif->auth_mode == WPA_AUTH) 276 vif->auth_mode = WPA_AUTH_CCKM; 277 else if (vif->auth_mode == WPA2_AUTH) 278 vif->auth_mode = WPA2_AUTH_CCKM; 279 } else if (key_mgmt != WLAN_AKM_SUITE_8021X) { 280 vif->auth_mode = NONE_AUTH; 281 } 282 } 283 284 static bool ath6kl_cfg80211_ready(struct ath6kl_vif *vif) 285 { 286 struct ath6kl *ar = vif->ar; 287 288 if (!test_bit(WMI_READY, &ar->flag)) { 289 ath6kl_err("wmi is not ready\n"); 290 return false; 291 } 292 293 if (!test_bit(WLAN_ENABLED, &vif->flags)) { 294 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "wlan disabled\n"); 295 return false; 296 } 297 298 return true; 299 } 300 301 static bool ath6kl_is_wpa_ie(const u8 *pos) 302 { 303 return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 && 304 pos[2] == 0x00 && pos[3] == 0x50 && 305 pos[4] == 0xf2 && pos[5] == 0x01; 306 } 307 308 static bool ath6kl_is_rsn_ie(const u8 *pos) 309 { 310 return pos[0] == WLAN_EID_RSN; 311 } 312 313 static bool ath6kl_is_wps_ie(const u8 *pos) 314 { 315 return (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 316 pos[1] >= 4 && 317 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2 && 318 pos[5] == 0x04); 319 } 320 321 static int ath6kl_set_assoc_req_ies(struct ath6kl_vif *vif, const u8 *ies, 322 size_t ies_len) 323 { 324 struct ath6kl *ar = vif->ar; 325 const u8 *pos; 326 u8 *buf = NULL; 327 size_t len = 0; 328 int ret; 329 330 /* 331 * Clear previously set flag 332 */ 333 334 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG; 335 336 /* 337 * Filter out RSN/WPA IE(s) 338 */ 339 340 if (ies && ies_len) { 341 buf = kmalloc(ies_len, GFP_KERNEL); 342 if (buf == NULL) 343 return -ENOMEM; 344 pos = ies; 345 346 while (pos + 1 < ies + ies_len) { 347 if (pos + 2 + pos[1] > ies + ies_len) 348 break; 349 if (!(ath6kl_is_wpa_ie(pos) || ath6kl_is_rsn_ie(pos))) { 350 memcpy(buf + len, pos, 2 + pos[1]); 351 len += 2 + pos[1]; 352 } 353 354 if (ath6kl_is_wps_ie(pos)) 355 ar->connect_ctrl_flags |= CONNECT_WPS_FLAG; 356 357 pos += 2 + pos[1]; 358 } 359 } 360 361 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx, 362 WMI_FRAME_ASSOC_REQ, buf, len); 363 kfree(buf); 364 return ret; 365 } 366 367 static int ath6kl_nliftype_to_drv_iftype(enum nl80211_iftype type, u8 *nw_type) 368 { 369 switch (type) { 370 case NL80211_IFTYPE_STATION: 371 case NL80211_IFTYPE_P2P_CLIENT: 372 *nw_type = INFRA_NETWORK; 373 break; 374 case NL80211_IFTYPE_ADHOC: 375 *nw_type = ADHOC_NETWORK; 376 break; 377 case NL80211_IFTYPE_AP: 378 case NL80211_IFTYPE_P2P_GO: 379 *nw_type = AP_NETWORK; 380 break; 381 default: 382 ath6kl_err("invalid interface type %u\n", type); 383 return -ENOTSUPP; 384 } 385 386 return 0; 387 } 388 389 static bool ath6kl_is_valid_iftype(struct ath6kl *ar, enum nl80211_iftype type, 390 u8 *if_idx, u8 *nw_type) 391 { 392 int i; 393 394 if (ath6kl_nliftype_to_drv_iftype(type, nw_type)) 395 return false; 396 397 if (ar->ibss_if_active || ((type == NL80211_IFTYPE_ADHOC) && 398 ar->num_vif)) 399 return false; 400 401 if (type == NL80211_IFTYPE_STATION || 402 type == NL80211_IFTYPE_AP || type == NL80211_IFTYPE_ADHOC) { 403 for (i = 0; i < ar->vif_max; i++) { 404 if ((ar->avail_idx_map) & BIT(i)) { 405 *if_idx = i; 406 return true; 407 } 408 } 409 } 410 411 if (type == NL80211_IFTYPE_P2P_CLIENT || 412 type == NL80211_IFTYPE_P2P_GO) { 413 for (i = ar->max_norm_iface; i < ar->vif_max; i++) { 414 if ((ar->avail_idx_map) & BIT(i)) { 415 *if_idx = i; 416 return true; 417 } 418 } 419 } 420 421 return false; 422 } 423 424 static bool ath6kl_is_tx_pending(struct ath6kl *ar) 425 { 426 return ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)] == 0; 427 } 428 429 static void ath6kl_cfg80211_sta_bmiss_enhance(struct ath6kl_vif *vif, 430 bool enable) 431 { 432 int err; 433 434 if (WARN_ON(!test_bit(WMI_READY, &vif->ar->flag))) 435 return; 436 437 if (vif->nw_type != INFRA_NETWORK) 438 return; 439 440 if (!test_bit(ATH6KL_FW_CAPABILITY_BMISS_ENHANCE, 441 vif->ar->fw_capabilities)) 442 return; 443 444 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s fw bmiss enhance\n", 445 enable ? "enable" : "disable"); 446 447 err = ath6kl_wmi_sta_bmiss_enhance_cmd(vif->ar->wmi, 448 vif->fw_vif_idx, enable); 449 if (err) 450 ath6kl_err("failed to %s enhanced bmiss detection: %d\n", 451 enable ? "enable" : "disable", err); 452 } 453 454 static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev, 455 struct cfg80211_connect_params *sme) 456 { 457 struct ath6kl *ar = ath6kl_priv(dev); 458 struct ath6kl_vif *vif = netdev_priv(dev); 459 int status; 460 u8 nw_subtype = (ar->p2p) ? SUBTYPE_P2PDEV : SUBTYPE_NONE; 461 u16 interval; 462 463 ath6kl_cfg80211_sscan_disable(vif); 464 465 vif->sme_state = SME_CONNECTING; 466 467 if (!ath6kl_cfg80211_ready(vif)) 468 return -EIO; 469 470 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) { 471 ath6kl_err("destroy in progress\n"); 472 return -EBUSY; 473 } 474 475 if (test_bit(SKIP_SCAN, &ar->flag) && 476 ((sme->channel && sme->channel->center_freq == 0) || 477 (sme->bssid && is_zero_ether_addr(sme->bssid)))) { 478 ath6kl_err("SkipScan: channel or bssid invalid\n"); 479 return -EINVAL; 480 } 481 482 if (down_interruptible(&ar->sem)) { 483 ath6kl_err("busy, couldn't get access\n"); 484 return -ERESTARTSYS; 485 } 486 487 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) { 488 ath6kl_err("busy, destroy in progress\n"); 489 up(&ar->sem); 490 return -EBUSY; 491 } 492 493 if (ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)]) { 494 /* 495 * sleep until the command queue drains 496 */ 497 wait_event_interruptible_timeout(ar->event_wq, 498 ath6kl_is_tx_pending(ar), 499 WMI_TIMEOUT); 500 if (signal_pending(current)) { 501 ath6kl_err("cmd queue drain timeout\n"); 502 up(&ar->sem); 503 return -EINTR; 504 } 505 } 506 507 status = ath6kl_set_assoc_req_ies(vif, sme->ie, sme->ie_len); 508 if (status) { 509 up(&ar->sem); 510 return status; 511 } 512 513 if (sme->ie == NULL || sme->ie_len == 0) 514 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG; 515 516 if (test_bit(CONNECTED, &vif->flags) && 517 vif->ssid_len == sme->ssid_len && 518 !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) { 519 vif->reconnect_flag = true; 520 status = ath6kl_wmi_reconnect_cmd(ar->wmi, vif->fw_vif_idx, 521 vif->req_bssid, 522 vif->ch_hint); 523 524 up(&ar->sem); 525 if (status) { 526 ath6kl_err("wmi_reconnect_cmd failed\n"); 527 return -EIO; 528 } 529 return 0; 530 } else if (vif->ssid_len == sme->ssid_len && 531 !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) { 532 ath6kl_disconnect(vif); 533 } 534 535 memset(vif->ssid, 0, sizeof(vif->ssid)); 536 vif->ssid_len = sme->ssid_len; 537 memcpy(vif->ssid, sme->ssid, sme->ssid_len); 538 539 if (sme->channel) 540 vif->ch_hint = sme->channel->center_freq; 541 542 memset(vif->req_bssid, 0, sizeof(vif->req_bssid)); 543 if (sme->bssid && !is_broadcast_ether_addr(sme->bssid)) 544 memcpy(vif->req_bssid, sme->bssid, sizeof(vif->req_bssid)); 545 546 ath6kl_set_wpa_version(vif, sme->crypto.wpa_versions); 547 548 status = ath6kl_set_auth_type(vif, sme->auth_type); 549 if (status) { 550 up(&ar->sem); 551 return status; 552 } 553 554 if (sme->crypto.n_ciphers_pairwise) 555 ath6kl_set_cipher(vif, sme->crypto.ciphers_pairwise[0], true); 556 else 557 ath6kl_set_cipher(vif, 0, true); 558 559 ath6kl_set_cipher(vif, sme->crypto.cipher_group, false); 560 561 if (sme->crypto.n_akm_suites) 562 ath6kl_set_key_mgmt(vif, sme->crypto.akm_suites[0]); 563 564 if ((sme->key_len) && 565 (vif->auth_mode == NONE_AUTH) && 566 (vif->prwise_crypto == WEP_CRYPT)) { 567 struct ath6kl_key *key = NULL; 568 569 if (sme->key_idx > WMI_MAX_KEY_INDEX) { 570 ath6kl_err("key index %d out of bounds\n", 571 sme->key_idx); 572 up(&ar->sem); 573 return -ENOENT; 574 } 575 576 key = &vif->keys[sme->key_idx]; 577 key->key_len = sme->key_len; 578 memcpy(key->key, sme->key, key->key_len); 579 key->cipher = vif->prwise_crypto; 580 vif->def_txkey_index = sme->key_idx; 581 582 ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, sme->key_idx, 583 vif->prwise_crypto, 584 GROUP_USAGE | TX_USAGE, 585 key->key_len, 586 NULL, 0, 587 key->key, KEY_OP_INIT_VAL, NULL, 588 NO_SYNC_WMIFLAG); 589 } 590 591 if (!ar->usr_bss_filter) { 592 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 593 if (ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 594 ALL_BSS_FILTER, 0) != 0) { 595 ath6kl_err("couldn't set bss filtering\n"); 596 up(&ar->sem); 597 return -EIO; 598 } 599 } 600 601 vif->nw_type = vif->next_mode; 602 603 /* enable enhanced bmiss detection if applicable */ 604 ath6kl_cfg80211_sta_bmiss_enhance(vif, true); 605 606 if (vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT) 607 nw_subtype = SUBTYPE_P2PCLIENT; 608 609 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 610 "%s: connect called with authmode %d dot11 auth %d" 611 " PW crypto %d PW crypto len %d GRP crypto %d" 612 " GRP crypto len %d channel hint %u\n", 613 __func__, 614 vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto, 615 vif->prwise_crypto_len, vif->grp_crypto, 616 vif->grp_crypto_len, vif->ch_hint); 617 618 vif->reconnect_flag = 0; 619 620 if (vif->nw_type == INFRA_NETWORK) { 621 interval = max_t(u16, vif->listen_intvl_t, 622 ATH6KL_MAX_WOW_LISTEN_INTL); 623 status = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 624 interval, 625 0); 626 if (status) { 627 ath6kl_err("couldn't set listen intervel\n"); 628 up(&ar->sem); 629 return status; 630 } 631 } 632 633 status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type, 634 vif->dot11_auth_mode, vif->auth_mode, 635 vif->prwise_crypto, 636 vif->prwise_crypto_len, 637 vif->grp_crypto, vif->grp_crypto_len, 638 vif->ssid_len, vif->ssid, 639 vif->req_bssid, vif->ch_hint, 640 ar->connect_ctrl_flags, nw_subtype); 641 642 if (sme->bg_scan_period == 0) { 643 /* disable background scan if period is 0 */ 644 sme->bg_scan_period = 0xffff; 645 } else if (sme->bg_scan_period == -1) { 646 /* configure default value if not specified */ 647 sme->bg_scan_period = DEFAULT_BG_SCAN_PERIOD; 648 } 649 650 ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0, 0, 651 sme->bg_scan_period, 0, 0, 0, 3, 0, 0, 0); 652 653 up(&ar->sem); 654 655 if (status == -EINVAL) { 656 memset(vif->ssid, 0, sizeof(vif->ssid)); 657 vif->ssid_len = 0; 658 ath6kl_err("invalid request\n"); 659 return -ENOENT; 660 } else if (status) { 661 ath6kl_err("ath6kl_wmi_connect_cmd failed\n"); 662 return -EIO; 663 } 664 665 if ((!(ar->connect_ctrl_flags & CONNECT_DO_WPA_OFFLOAD)) && 666 ((vif->auth_mode == WPA_PSK_AUTH) || 667 (vif->auth_mode == WPA2_PSK_AUTH))) { 668 mod_timer(&vif->disconnect_timer, 669 jiffies + msecs_to_jiffies(DISCON_TIMER_INTVAL)); 670 } 671 672 ar->connect_ctrl_flags &= ~CONNECT_DO_WPA_OFFLOAD; 673 set_bit(CONNECT_PEND, &vif->flags); 674 675 return 0; 676 } 677 678 static struct cfg80211_bss * 679 ath6kl_add_bss_if_needed(struct ath6kl_vif *vif, 680 enum network_type nw_type, 681 const u8 *bssid, 682 struct ieee80211_channel *chan, 683 const u8 *beacon_ie, 684 size_t beacon_ie_len) 685 { 686 struct ath6kl *ar = vif->ar; 687 struct cfg80211_bss *bss; 688 u16 cap_val; 689 enum ieee80211_bss_type bss_type; 690 u8 *ie; 691 692 if (nw_type & ADHOC_NETWORK) { 693 cap_val = WLAN_CAPABILITY_IBSS; 694 bss_type = IEEE80211_BSS_TYPE_IBSS; 695 } else { 696 cap_val = WLAN_CAPABILITY_ESS; 697 bss_type = IEEE80211_BSS_TYPE_ESS; 698 } 699 700 bss = cfg80211_get_bss(ar->wiphy, chan, bssid, 701 vif->ssid, vif->ssid_len, 702 bss_type, IEEE80211_PRIVACY_ANY); 703 if (bss == NULL) { 704 /* 705 * Since cfg80211 may not yet know about the BSS, 706 * generate a partial entry until the first BSS info 707 * event becomes available. 708 * 709 * Prepend SSID element since it is not included in the Beacon 710 * IEs from the target. 711 */ 712 ie = kmalloc(2 + vif->ssid_len + beacon_ie_len, GFP_KERNEL); 713 if (ie == NULL) 714 return NULL; 715 ie[0] = WLAN_EID_SSID; 716 ie[1] = vif->ssid_len; 717 memcpy(ie + 2, vif->ssid, vif->ssid_len); 718 memcpy(ie + 2 + vif->ssid_len, beacon_ie, beacon_ie_len); 719 bss = cfg80211_inform_bss(ar->wiphy, chan, 720 CFG80211_BSS_FTYPE_UNKNOWN, 721 bssid, 0, cap_val, 100, 722 ie, 2 + vif->ssid_len + beacon_ie_len, 723 0, GFP_KERNEL); 724 if (bss) 725 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 726 "added bss %pM to cfg80211\n", bssid); 727 kfree(ie); 728 } else { 729 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "cfg80211 already has a bss\n"); 730 } 731 732 return bss; 733 } 734 735 void ath6kl_cfg80211_connect_event(struct ath6kl_vif *vif, u16 channel, 736 u8 *bssid, u16 listen_intvl, 737 u16 beacon_intvl, 738 enum network_type nw_type, 739 u8 beacon_ie_len, u8 assoc_req_len, 740 u8 assoc_resp_len, u8 *assoc_info) 741 { 742 struct ieee80211_channel *chan; 743 struct ath6kl *ar = vif->ar; 744 struct cfg80211_bss *bss; 745 746 /* capinfo + listen interval */ 747 u8 assoc_req_ie_offset = sizeof(u16) + sizeof(u16); 748 749 /* capinfo + status code + associd */ 750 u8 assoc_resp_ie_offset = sizeof(u16) + sizeof(u16) + sizeof(u16); 751 752 u8 *assoc_req_ie = assoc_info + beacon_ie_len + assoc_req_ie_offset; 753 u8 *assoc_resp_ie = assoc_info + beacon_ie_len + assoc_req_len + 754 assoc_resp_ie_offset; 755 756 assoc_req_len -= assoc_req_ie_offset; 757 assoc_resp_len -= assoc_resp_ie_offset; 758 759 /* 760 * Store Beacon interval here; DTIM period will be available only once 761 * a Beacon frame from the AP is seen. 762 */ 763 vif->assoc_bss_beacon_int = beacon_intvl; 764 clear_bit(DTIM_PERIOD_AVAIL, &vif->flags); 765 766 if (nw_type & ADHOC_NETWORK) { 767 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC) { 768 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 769 "%s: ath6k not in ibss mode\n", __func__); 770 return; 771 } 772 } 773 774 if (nw_type & INFRA_NETWORK) { 775 if (vif->wdev.iftype != NL80211_IFTYPE_STATION && 776 vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) { 777 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 778 "%s: ath6k not in station mode\n", __func__); 779 return; 780 } 781 } 782 783 chan = ieee80211_get_channel(ar->wiphy, (int) channel); 784 785 bss = ath6kl_add_bss_if_needed(vif, nw_type, bssid, chan, 786 assoc_info, beacon_ie_len); 787 if (!bss) { 788 ath6kl_err("could not add cfg80211 bss entry\n"); 789 return; 790 } 791 792 if (nw_type & ADHOC_NETWORK) { 793 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "ad-hoc %s selected\n", 794 nw_type & ADHOC_CREATOR ? "creator" : "joiner"); 795 cfg80211_ibss_joined(vif->ndev, bssid, chan, GFP_KERNEL); 796 cfg80211_put_bss(ar->wiphy, bss); 797 return; 798 } 799 800 if (vif->sme_state == SME_CONNECTING) { 801 /* inform connect result to cfg80211 */ 802 vif->sme_state = SME_CONNECTED; 803 cfg80211_connect_result(vif->ndev, bssid, 804 assoc_req_ie, assoc_req_len, 805 assoc_resp_ie, assoc_resp_len, 806 WLAN_STATUS_SUCCESS, GFP_KERNEL); 807 cfg80211_put_bss(ar->wiphy, bss); 808 } else if (vif->sme_state == SME_CONNECTED) { 809 struct cfg80211_roam_info roam_info = { 810 .links[0].bss = bss, 811 .req_ie = assoc_req_ie, 812 .req_ie_len = assoc_req_len, 813 .resp_ie = assoc_resp_ie, 814 .resp_ie_len = assoc_resp_len, 815 }; 816 /* inform roam event to cfg80211 */ 817 cfg80211_roamed(vif->ndev, &roam_info, GFP_KERNEL); 818 } 819 } 820 821 static int ath6kl_cfg80211_disconnect(struct wiphy *wiphy, 822 struct net_device *dev, u16 reason_code) 823 { 824 struct ath6kl *ar = ath6kl_priv(dev); 825 struct ath6kl_vif *vif = netdev_priv(dev); 826 827 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: reason=%u\n", __func__, 828 reason_code); 829 830 ath6kl_cfg80211_sscan_disable(vif); 831 832 if (!ath6kl_cfg80211_ready(vif)) 833 return -EIO; 834 835 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) { 836 ath6kl_err("busy, destroy in progress\n"); 837 return -EBUSY; 838 } 839 840 if (down_interruptible(&ar->sem)) { 841 ath6kl_err("busy, couldn't get access\n"); 842 return -ERESTARTSYS; 843 } 844 845 vif->reconnect_flag = 0; 846 ath6kl_disconnect(vif); 847 memset(vif->ssid, 0, sizeof(vif->ssid)); 848 vif->ssid_len = 0; 849 850 if (!test_bit(SKIP_SCAN, &ar->flag)) 851 memset(vif->req_bssid, 0, sizeof(vif->req_bssid)); 852 853 up(&ar->sem); 854 855 return 0; 856 } 857 858 void ath6kl_cfg80211_disconnect_event(struct ath6kl_vif *vif, u8 reason, 859 u8 *bssid, u8 assoc_resp_len, 860 u8 *assoc_info, u16 proto_reason) 861 { 862 struct ath6kl *ar = vif->ar; 863 864 if (vif->scan_req) { 865 struct cfg80211_scan_info info = { 866 .aborted = true, 867 }; 868 869 cfg80211_scan_done(vif->scan_req, &info); 870 vif->scan_req = NULL; 871 } 872 873 if (vif->nw_type & ADHOC_NETWORK) { 874 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC) 875 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 876 "%s: ath6k not in ibss mode\n", __func__); 877 return; 878 } 879 880 if (vif->nw_type & INFRA_NETWORK) { 881 if (vif->wdev.iftype != NL80211_IFTYPE_STATION && 882 vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) { 883 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 884 "%s: ath6k not in station mode\n", __func__); 885 return; 886 } 887 } 888 889 clear_bit(CONNECT_PEND, &vif->flags); 890 891 if (vif->sme_state == SME_CONNECTING) { 892 cfg80211_connect_result(vif->ndev, 893 bssid, NULL, 0, 894 NULL, 0, 895 WLAN_STATUS_UNSPECIFIED_FAILURE, 896 GFP_KERNEL); 897 } else if (vif->sme_state == SME_CONNECTED) { 898 cfg80211_disconnected(vif->ndev, proto_reason, 899 NULL, 0, false, GFP_KERNEL); 900 } 901 902 vif->sme_state = SME_DISCONNECTED; 903 904 /* 905 * Send a disconnect command to target when a disconnect event is 906 * received with reason code other than 3 (DISCONNECT_CMD - disconnect 907 * request from host) to make the firmware stop trying to connect even 908 * after giving disconnect event. There will be one more disconnect 909 * event for this disconnect command with reason code DISCONNECT_CMD 910 * which won't be notified to cfg80211. 911 */ 912 if (reason != DISCONNECT_CMD) 913 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx); 914 } 915 916 static int ath6kl_set_probed_ssids(struct ath6kl *ar, 917 struct ath6kl_vif *vif, 918 struct cfg80211_ssid *ssids, int n_ssids, 919 struct cfg80211_match_set *match_set, 920 int n_match_ssid) 921 { 922 u8 i, j, index_to_add, ssid_found = false; 923 struct ath6kl_cfg80211_match_probe_ssid ssid_list[MAX_PROBED_SSIDS]; 924 925 memset(ssid_list, 0, sizeof(ssid_list)); 926 927 if (n_ssids > MAX_PROBED_SSIDS || 928 n_match_ssid > MAX_PROBED_SSIDS) 929 return -EINVAL; 930 931 for (i = 0; i < n_ssids; i++) { 932 memcpy(ssid_list[i].ssid.ssid, 933 ssids[i].ssid, 934 ssids[i].ssid_len); 935 ssid_list[i].ssid.ssid_len = ssids[i].ssid_len; 936 937 if (ssids[i].ssid_len) 938 ssid_list[i].flag = SPECIFIC_SSID_FLAG; 939 else 940 ssid_list[i].flag = ANY_SSID_FLAG; 941 942 if (ar->wiphy->max_match_sets != 0 && n_match_ssid == 0) 943 ssid_list[i].flag |= MATCH_SSID_FLAG; 944 } 945 946 index_to_add = i; 947 948 for (i = 0; i < n_match_ssid; i++) { 949 ssid_found = false; 950 951 for (j = 0; j < n_ssids; j++) { 952 if ((match_set[i].ssid.ssid_len == 953 ssid_list[j].ssid.ssid_len) && 954 (!memcmp(ssid_list[j].ssid.ssid, 955 match_set[i].ssid.ssid, 956 match_set[i].ssid.ssid_len))) { 957 ssid_list[j].flag |= MATCH_SSID_FLAG; 958 ssid_found = true; 959 break; 960 } 961 } 962 963 if (ssid_found) 964 continue; 965 966 if (index_to_add >= MAX_PROBED_SSIDS) 967 continue; 968 969 ssid_list[index_to_add].ssid.ssid_len = 970 match_set[i].ssid.ssid_len; 971 memcpy(ssid_list[index_to_add].ssid.ssid, 972 match_set[i].ssid.ssid, 973 match_set[i].ssid.ssid_len); 974 ssid_list[index_to_add].flag |= MATCH_SSID_FLAG; 975 index_to_add++; 976 } 977 978 for (i = 0; i < index_to_add; i++) { 979 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i, 980 ssid_list[i].flag, 981 ssid_list[i].ssid.ssid_len, 982 ssid_list[i].ssid.ssid); 983 } 984 985 /* Make sure no old entries are left behind */ 986 for (i = index_to_add; i < MAX_PROBED_SSIDS; i++) { 987 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i, 988 DISABLE_SSID_FLAG, 0, NULL); 989 } 990 991 return 0; 992 } 993 994 static int ath6kl_cfg80211_scan(struct wiphy *wiphy, 995 struct cfg80211_scan_request *request) 996 { 997 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(request->wdev); 998 struct ath6kl *ar = ath6kl_priv(vif->ndev); 999 s8 n_channels = 0; 1000 u16 *channels = NULL; 1001 int ret = 0; 1002 u32 force_fg_scan = 0; 1003 1004 if (!ath6kl_cfg80211_ready(vif)) 1005 return -EIO; 1006 1007 ath6kl_cfg80211_sscan_disable(vif); 1008 1009 if (!ar->usr_bss_filter) { 1010 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 1011 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 1012 ALL_BSS_FILTER, 0); 1013 if (ret) { 1014 ath6kl_err("couldn't set bss filtering\n"); 1015 return ret; 1016 } 1017 } 1018 1019 ret = ath6kl_set_probed_ssids(ar, vif, request->ssids, 1020 request->n_ssids, NULL, 0); 1021 if (ret < 0) 1022 return ret; 1023 1024 /* this also clears IE in fw if it's not set */ 1025 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx, 1026 WMI_FRAME_PROBE_REQ, 1027 request->ie, request->ie_len); 1028 if (ret) { 1029 ath6kl_err("failed to set Probe Request appie for scan\n"); 1030 return ret; 1031 } 1032 1033 /* 1034 * Scan only the requested channels if the request specifies a set of 1035 * channels. If the list is longer than the target supports, do not 1036 * configure the list and instead, scan all available channels. 1037 */ 1038 if (request->n_channels > 0 && 1039 request->n_channels <= WMI_MAX_CHANNELS) { 1040 u8 i; 1041 1042 n_channels = request->n_channels; 1043 1044 channels = kcalloc(n_channels, sizeof(u16), GFP_KERNEL); 1045 if (channels == NULL) { 1046 ath6kl_warn("failed to set scan channels, scan all channels"); 1047 n_channels = 0; 1048 } 1049 1050 for (i = 0; i < n_channels; i++) 1051 channels[i] = request->channels[i]->center_freq; 1052 } 1053 1054 if (test_bit(CONNECTED, &vif->flags)) 1055 force_fg_scan = 1; 1056 1057 vif->scan_req = request; 1058 1059 ret = ath6kl_wmi_beginscan_cmd(ar->wmi, vif->fw_vif_idx, 1060 WMI_LONG_SCAN, force_fg_scan, 1061 false, 0, 1062 ATH6KL_FG_SCAN_INTERVAL, 1063 n_channels, channels, 1064 request->no_cck, 1065 request->rates); 1066 if (ret) { 1067 ath6kl_err("failed to start scan: %d\n", ret); 1068 vif->scan_req = NULL; 1069 } 1070 1071 kfree(channels); 1072 1073 return ret; 1074 } 1075 1076 void ath6kl_cfg80211_scan_complete_event(struct ath6kl_vif *vif, bool aborted) 1077 { 1078 struct ath6kl *ar = vif->ar; 1079 struct cfg80211_scan_info info = { 1080 .aborted = aborted, 1081 }; 1082 int i; 1083 1084 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: status%s\n", __func__, 1085 aborted ? " aborted" : ""); 1086 1087 if (!vif->scan_req) 1088 return; 1089 1090 if (aborted) 1091 goto out; 1092 1093 if (vif->scan_req->n_ssids && vif->scan_req->ssids[0].ssid_len) { 1094 for (i = 0; i < vif->scan_req->n_ssids; i++) { 1095 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, 1096 i, DISABLE_SSID_FLAG, 1097 0, NULL); 1098 } 1099 } 1100 1101 out: 1102 cfg80211_scan_done(vif->scan_req, &info); 1103 vif->scan_req = NULL; 1104 } 1105 1106 void ath6kl_cfg80211_ch_switch_notify(struct ath6kl_vif *vif, int freq, 1107 enum wmi_phy_mode mode) 1108 { 1109 struct cfg80211_chan_def chandef; 1110 1111 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1112 "channel switch notify nw_type %d freq %d mode %d\n", 1113 vif->nw_type, freq, mode); 1114 1115 cfg80211_chandef_create(&chandef, 1116 ieee80211_get_channel(vif->ar->wiphy, freq), 1117 (mode == WMI_11G_HT20 && 1118 ath6kl_band_2ghz.ht_cap.ht_supported) ? 1119 NL80211_CHAN_HT20 : NL80211_CHAN_NO_HT); 1120 1121 mutex_lock(&vif->wdev.mtx); 1122 cfg80211_ch_switch_notify(vif->ndev, &chandef, 0); 1123 mutex_unlock(&vif->wdev.mtx); 1124 } 1125 1126 static int ath6kl_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev, 1127 u8 key_index, bool pairwise, 1128 const u8 *mac_addr, 1129 struct key_params *params) 1130 { 1131 struct ath6kl *ar = ath6kl_priv(ndev); 1132 struct ath6kl_vif *vif = netdev_priv(ndev); 1133 struct ath6kl_key *key = NULL; 1134 int seq_len; 1135 u8 key_usage; 1136 u8 key_type; 1137 1138 if (!ath6kl_cfg80211_ready(vif)) 1139 return -EIO; 1140 1141 if (params->cipher == CCKM_KRK_CIPHER_SUITE) { 1142 if (params->key_len != WMI_KRK_LEN) 1143 return -EINVAL; 1144 return ath6kl_wmi_add_krk_cmd(ar->wmi, vif->fw_vif_idx, 1145 params->key); 1146 } 1147 1148 if (key_index > WMI_MAX_KEY_INDEX) { 1149 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1150 "%s: key index %d out of bounds\n", __func__, 1151 key_index); 1152 return -ENOENT; 1153 } 1154 1155 key = &vif->keys[key_index]; 1156 memset(key, 0, sizeof(struct ath6kl_key)); 1157 1158 if (pairwise) 1159 key_usage = PAIRWISE_USAGE; 1160 else 1161 key_usage = GROUP_USAGE; 1162 1163 seq_len = params->seq_len; 1164 if (params->cipher == WLAN_CIPHER_SUITE_SMS4 && 1165 seq_len > ATH6KL_KEY_SEQ_LEN) { 1166 /* Only first half of the WPI PN is configured */ 1167 seq_len = ATH6KL_KEY_SEQ_LEN; 1168 } 1169 if (params->key_len > WLAN_MAX_KEY_LEN || 1170 seq_len > sizeof(key->seq)) 1171 return -EINVAL; 1172 1173 key->key_len = params->key_len; 1174 memcpy(key->key, params->key, key->key_len); 1175 key->seq_len = seq_len; 1176 memcpy(key->seq, params->seq, key->seq_len); 1177 key->cipher = params->cipher; 1178 1179 switch (key->cipher) { 1180 case WLAN_CIPHER_SUITE_WEP40: 1181 case WLAN_CIPHER_SUITE_WEP104: 1182 key_type = WEP_CRYPT; 1183 break; 1184 1185 case WLAN_CIPHER_SUITE_TKIP: 1186 key_type = TKIP_CRYPT; 1187 break; 1188 1189 case WLAN_CIPHER_SUITE_CCMP: 1190 key_type = AES_CRYPT; 1191 break; 1192 case WLAN_CIPHER_SUITE_SMS4: 1193 key_type = WAPI_CRYPT; 1194 break; 1195 1196 default: 1197 return -ENOTSUPP; 1198 } 1199 1200 if (((vif->auth_mode == WPA_PSK_AUTH) || 1201 (vif->auth_mode == WPA2_PSK_AUTH)) && 1202 (key_usage & GROUP_USAGE)) 1203 del_timer(&vif->disconnect_timer); 1204 1205 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1206 "%s: index %d, key_len %d, key_type 0x%x, key_usage 0x%x, seq_len %d\n", 1207 __func__, key_index, key->key_len, key_type, 1208 key_usage, key->seq_len); 1209 1210 if (vif->nw_type == AP_NETWORK && !pairwise && 1211 (key_type == TKIP_CRYPT || key_type == AES_CRYPT || 1212 key_type == WAPI_CRYPT)) { 1213 ar->ap_mode_bkey.valid = true; 1214 ar->ap_mode_bkey.key_index = key_index; 1215 ar->ap_mode_bkey.key_type = key_type; 1216 ar->ap_mode_bkey.key_len = key->key_len; 1217 memcpy(ar->ap_mode_bkey.key, key->key, key->key_len); 1218 if (!test_bit(CONNECTED, &vif->flags)) { 1219 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1220 "Delay initial group key configuration until AP mode has been started\n"); 1221 /* 1222 * The key will be set in ath6kl_connect_ap_mode() once 1223 * the connected event is received from the target. 1224 */ 1225 return 0; 1226 } 1227 } 1228 1229 if (vif->next_mode == AP_NETWORK && key_type == WEP_CRYPT && 1230 !test_bit(CONNECTED, &vif->flags)) { 1231 /* 1232 * Store the key locally so that it can be re-configured after 1233 * the AP mode has properly started 1234 * (ath6kl_install_statioc_wep_keys). 1235 */ 1236 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1237 "Delay WEP key configuration until AP mode has been started\n"); 1238 vif->wep_key_list[key_index].key_len = key->key_len; 1239 memcpy(vif->wep_key_list[key_index].key, key->key, 1240 key->key_len); 1241 return 0; 1242 } 1243 1244 return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, key_index, 1245 key_type, key_usage, key->key_len, 1246 key->seq, key->seq_len, key->key, 1247 KEY_OP_INIT_VAL, 1248 (u8 *) mac_addr, SYNC_BOTH_WMIFLAG); 1249 } 1250 1251 static int ath6kl_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev, 1252 u8 key_index, bool pairwise, 1253 const u8 *mac_addr) 1254 { 1255 struct ath6kl *ar = ath6kl_priv(ndev); 1256 struct ath6kl_vif *vif = netdev_priv(ndev); 1257 1258 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index); 1259 1260 if (!ath6kl_cfg80211_ready(vif)) 1261 return -EIO; 1262 1263 if (key_index > WMI_MAX_KEY_INDEX) { 1264 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1265 "%s: key index %d out of bounds\n", __func__, 1266 key_index); 1267 return -ENOENT; 1268 } 1269 1270 if (!vif->keys[key_index].key_len) { 1271 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1272 "%s: index %d is empty\n", __func__, key_index); 1273 return 0; 1274 } 1275 1276 vif->keys[key_index].key_len = 0; 1277 1278 return ath6kl_wmi_deletekey_cmd(ar->wmi, vif->fw_vif_idx, key_index); 1279 } 1280 1281 static int ath6kl_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev, 1282 u8 key_index, bool pairwise, 1283 const u8 *mac_addr, void *cookie, 1284 void (*callback) (void *cookie, 1285 struct key_params *)) 1286 { 1287 struct ath6kl_vif *vif = netdev_priv(ndev); 1288 struct ath6kl_key *key = NULL; 1289 struct key_params params; 1290 1291 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index); 1292 1293 if (!ath6kl_cfg80211_ready(vif)) 1294 return -EIO; 1295 1296 if (key_index > WMI_MAX_KEY_INDEX) { 1297 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1298 "%s: key index %d out of bounds\n", __func__, 1299 key_index); 1300 return -ENOENT; 1301 } 1302 1303 key = &vif->keys[key_index]; 1304 memset(¶ms, 0, sizeof(params)); 1305 params.cipher = key->cipher; 1306 params.key_len = key->key_len; 1307 params.seq_len = key->seq_len; 1308 params.seq = key->seq; 1309 params.key = key->key; 1310 1311 callback(cookie, ¶ms); 1312 1313 return key->key_len ? 0 : -ENOENT; 1314 } 1315 1316 static int ath6kl_cfg80211_set_default_key(struct wiphy *wiphy, 1317 struct net_device *ndev, 1318 u8 key_index, bool unicast, 1319 bool multicast) 1320 { 1321 struct ath6kl *ar = ath6kl_priv(ndev); 1322 struct ath6kl_vif *vif = netdev_priv(ndev); 1323 struct ath6kl_key *key = NULL; 1324 u8 key_usage; 1325 enum ath6kl_crypto_type key_type = NONE_CRYPT; 1326 1327 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index); 1328 1329 if (!ath6kl_cfg80211_ready(vif)) 1330 return -EIO; 1331 1332 if (key_index > WMI_MAX_KEY_INDEX) { 1333 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1334 "%s: key index %d out of bounds\n", 1335 __func__, key_index); 1336 return -ENOENT; 1337 } 1338 1339 if (!vif->keys[key_index].key_len) { 1340 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: invalid key index %d\n", 1341 __func__, key_index); 1342 return -EINVAL; 1343 } 1344 1345 vif->def_txkey_index = key_index; 1346 key = &vif->keys[vif->def_txkey_index]; 1347 key_usage = GROUP_USAGE; 1348 if (vif->prwise_crypto == WEP_CRYPT) 1349 key_usage |= TX_USAGE; 1350 if (unicast) 1351 key_type = vif->prwise_crypto; 1352 if (multicast) 1353 key_type = vif->grp_crypto; 1354 1355 if (vif->next_mode == AP_NETWORK && !test_bit(CONNECTED, &vif->flags)) 1356 return 0; /* Delay until AP mode has been started */ 1357 1358 return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, 1359 vif->def_txkey_index, 1360 key_type, key_usage, 1361 key->key_len, key->seq, key->seq_len, 1362 key->key, 1363 KEY_OP_INIT_VAL, NULL, 1364 SYNC_BOTH_WMIFLAG); 1365 } 1366 1367 void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, 1368 bool ismcast) 1369 { 1370 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1371 "%s: keyid %d, ismcast %d\n", __func__, keyid, ismcast); 1372 1373 cfg80211_michael_mic_failure(vif->ndev, vif->bssid, 1374 (ismcast ? NL80211_KEYTYPE_GROUP : 1375 NL80211_KEYTYPE_PAIRWISE), keyid, NULL, 1376 GFP_KERNEL); 1377 } 1378 1379 static int ath6kl_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 1380 { 1381 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy); 1382 struct ath6kl_vif *vif; 1383 int ret; 1384 1385 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: changed 0x%x\n", __func__, 1386 changed); 1387 1388 vif = ath6kl_vif_first(ar); 1389 if (!vif) 1390 return -EIO; 1391 1392 if (!ath6kl_cfg80211_ready(vif)) 1393 return -EIO; 1394 1395 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 1396 ret = ath6kl_wmi_set_rts_cmd(ar->wmi, wiphy->rts_threshold); 1397 if (ret != 0) { 1398 ath6kl_err("ath6kl_wmi_set_rts_cmd failed\n"); 1399 return -EIO; 1400 } 1401 } 1402 1403 return 0; 1404 } 1405 1406 static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy, 1407 struct wireless_dev *wdev, 1408 enum nl80211_tx_power_setting type, 1409 int mbm) 1410 { 1411 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy); 1412 struct ath6kl_vif *vif; 1413 int dbm = MBM_TO_DBM(mbm); 1414 1415 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x, dbm %d\n", __func__, 1416 type, dbm); 1417 1418 vif = ath6kl_vif_first(ar); 1419 if (!vif) 1420 return -EIO; 1421 1422 if (!ath6kl_cfg80211_ready(vif)) 1423 return -EIO; 1424 1425 switch (type) { 1426 case NL80211_TX_POWER_AUTOMATIC: 1427 return 0; 1428 case NL80211_TX_POWER_LIMITED: 1429 ar->tx_pwr = dbm; 1430 break; 1431 default: 1432 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x not supported\n", 1433 __func__, type); 1434 return -EOPNOTSUPP; 1435 } 1436 1437 ath6kl_wmi_set_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx, dbm); 1438 1439 return 0; 1440 } 1441 1442 static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy, 1443 struct wireless_dev *wdev, 1444 int *dbm) 1445 { 1446 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy); 1447 struct ath6kl_vif *vif; 1448 1449 vif = ath6kl_vif_first(ar); 1450 if (!vif) 1451 return -EIO; 1452 1453 if (!ath6kl_cfg80211_ready(vif)) 1454 return -EIO; 1455 1456 if (test_bit(CONNECTED, &vif->flags)) { 1457 ar->tx_pwr = 255; 1458 1459 if (ath6kl_wmi_get_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx) != 0) { 1460 ath6kl_err("ath6kl_wmi_get_tx_pwr_cmd failed\n"); 1461 return -EIO; 1462 } 1463 1464 wait_event_interruptible_timeout(ar->event_wq, ar->tx_pwr != 255, 1465 5 * HZ); 1466 1467 if (signal_pending(current)) { 1468 ath6kl_err("target did not respond\n"); 1469 return -EINTR; 1470 } 1471 } 1472 1473 *dbm = ar->tx_pwr; 1474 return 0; 1475 } 1476 1477 static int ath6kl_cfg80211_set_power_mgmt(struct wiphy *wiphy, 1478 struct net_device *dev, 1479 bool pmgmt, int timeout) 1480 { 1481 struct ath6kl *ar = ath6kl_priv(dev); 1482 struct wmi_power_mode_cmd mode; 1483 struct ath6kl_vif *vif = netdev_priv(dev); 1484 1485 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: pmgmt %d, timeout %d\n", 1486 __func__, pmgmt, timeout); 1487 1488 if (!ath6kl_cfg80211_ready(vif)) 1489 return -EIO; 1490 1491 if (pmgmt) { 1492 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: rec power\n", __func__); 1493 mode.pwr_mode = REC_POWER; 1494 } else { 1495 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: max perf\n", __func__); 1496 mode.pwr_mode = MAX_PERF_POWER; 1497 } 1498 1499 if (ath6kl_wmi_powermode_cmd(ar->wmi, vif->fw_vif_idx, 1500 mode.pwr_mode) != 0) { 1501 ath6kl_err("wmi_powermode_cmd failed\n"); 1502 return -EIO; 1503 } 1504 1505 return 0; 1506 } 1507 1508 static struct wireless_dev *ath6kl_cfg80211_add_iface(struct wiphy *wiphy, 1509 const char *name, 1510 unsigned char name_assign_type, 1511 enum nl80211_iftype type, 1512 struct vif_params *params) 1513 { 1514 struct ath6kl *ar = wiphy_priv(wiphy); 1515 struct wireless_dev *wdev; 1516 u8 if_idx, nw_type; 1517 1518 if (ar->num_vif == ar->vif_max) { 1519 ath6kl_err("Reached maximum number of supported vif\n"); 1520 return ERR_PTR(-EINVAL); 1521 } 1522 1523 if (!ath6kl_is_valid_iftype(ar, type, &if_idx, &nw_type)) { 1524 ath6kl_err("Not a supported interface type\n"); 1525 return ERR_PTR(-EINVAL); 1526 } 1527 1528 wdev = ath6kl_interface_add(ar, name, name_assign_type, type, if_idx, nw_type); 1529 if (!wdev) 1530 return ERR_PTR(-ENOMEM); 1531 1532 ar->num_vif++; 1533 1534 return wdev; 1535 } 1536 1537 static int ath6kl_cfg80211_del_iface(struct wiphy *wiphy, 1538 struct wireless_dev *wdev) 1539 { 1540 struct ath6kl *ar = wiphy_priv(wiphy); 1541 struct ath6kl_vif *vif = netdev_priv(wdev->netdev); 1542 1543 spin_lock_bh(&ar->list_lock); 1544 list_del(&vif->list); 1545 spin_unlock_bh(&ar->list_lock); 1546 1547 ath6kl_cfg80211_vif_stop(vif, test_bit(WMI_READY, &ar->flag)); 1548 1549 rtnl_lock(); 1550 ath6kl_cfg80211_vif_cleanup(vif); 1551 rtnl_unlock(); 1552 1553 return 0; 1554 } 1555 1556 static int ath6kl_cfg80211_change_iface(struct wiphy *wiphy, 1557 struct net_device *ndev, 1558 enum nl80211_iftype type, 1559 struct vif_params *params) 1560 { 1561 struct ath6kl_vif *vif = netdev_priv(ndev); 1562 int i; 1563 1564 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type %u\n", __func__, type); 1565 1566 /* 1567 * Don't bring up p2p on an interface which is not initialized 1568 * for p2p operation where fw does not have capability to switch 1569 * dynamically between non-p2p and p2p type interface. 1570 */ 1571 if (!test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX, 1572 vif->ar->fw_capabilities) && 1573 (type == NL80211_IFTYPE_P2P_CLIENT || 1574 type == NL80211_IFTYPE_P2P_GO)) { 1575 if (vif->ar->vif_max == 1) { 1576 if (vif->fw_vif_idx != 0) 1577 return -EINVAL; 1578 else 1579 goto set_iface_type; 1580 } 1581 1582 for (i = vif->ar->max_norm_iface; i < vif->ar->vif_max; i++) { 1583 if (i == vif->fw_vif_idx) 1584 break; 1585 } 1586 1587 if (i == vif->ar->vif_max) { 1588 ath6kl_err("Invalid interface to bring up P2P\n"); 1589 return -EINVAL; 1590 } 1591 } 1592 1593 /* need to clean up enhanced bmiss detection fw state */ 1594 ath6kl_cfg80211_sta_bmiss_enhance(vif, false); 1595 1596 set_iface_type: 1597 switch (type) { 1598 case NL80211_IFTYPE_STATION: 1599 case NL80211_IFTYPE_P2P_CLIENT: 1600 vif->next_mode = INFRA_NETWORK; 1601 break; 1602 case NL80211_IFTYPE_ADHOC: 1603 vif->next_mode = ADHOC_NETWORK; 1604 break; 1605 case NL80211_IFTYPE_AP: 1606 case NL80211_IFTYPE_P2P_GO: 1607 vif->next_mode = AP_NETWORK; 1608 break; 1609 default: 1610 ath6kl_err("invalid interface type %u\n", type); 1611 return -EOPNOTSUPP; 1612 } 1613 1614 vif->wdev.iftype = type; 1615 1616 return 0; 1617 } 1618 1619 static int ath6kl_cfg80211_join_ibss(struct wiphy *wiphy, 1620 struct net_device *dev, 1621 struct cfg80211_ibss_params *ibss_param) 1622 { 1623 struct ath6kl *ar = ath6kl_priv(dev); 1624 struct ath6kl_vif *vif = netdev_priv(dev); 1625 int status; 1626 1627 if (!ath6kl_cfg80211_ready(vif)) 1628 return -EIO; 1629 1630 vif->ssid_len = ibss_param->ssid_len; 1631 memcpy(vif->ssid, ibss_param->ssid, vif->ssid_len); 1632 1633 if (ibss_param->chandef.chan) 1634 vif->ch_hint = ibss_param->chandef.chan->center_freq; 1635 1636 if (ibss_param->channel_fixed) { 1637 /* 1638 * TODO: channel_fixed: The channel should be fixed, do not 1639 * search for IBSSs to join on other channels. Target 1640 * firmware does not support this feature, needs to be 1641 * updated. 1642 */ 1643 return -EOPNOTSUPP; 1644 } 1645 1646 memset(vif->req_bssid, 0, sizeof(vif->req_bssid)); 1647 if (ibss_param->bssid && !is_broadcast_ether_addr(ibss_param->bssid)) 1648 memcpy(vif->req_bssid, ibss_param->bssid, 1649 sizeof(vif->req_bssid)); 1650 1651 ath6kl_set_wpa_version(vif, 0); 1652 1653 status = ath6kl_set_auth_type(vif, NL80211_AUTHTYPE_OPEN_SYSTEM); 1654 if (status) 1655 return status; 1656 1657 if (ibss_param->privacy) { 1658 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, true); 1659 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, false); 1660 } else { 1661 ath6kl_set_cipher(vif, 0, true); 1662 ath6kl_set_cipher(vif, 0, false); 1663 } 1664 1665 vif->nw_type = vif->next_mode; 1666 1667 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1668 "%s: connect called with authmode %d dot11 auth %d" 1669 " PW crypto %d PW crypto len %d GRP crypto %d" 1670 " GRP crypto len %d channel hint %u\n", 1671 __func__, 1672 vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto, 1673 vif->prwise_crypto_len, vif->grp_crypto, 1674 vif->grp_crypto_len, vif->ch_hint); 1675 1676 status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type, 1677 vif->dot11_auth_mode, vif->auth_mode, 1678 vif->prwise_crypto, 1679 vif->prwise_crypto_len, 1680 vif->grp_crypto, vif->grp_crypto_len, 1681 vif->ssid_len, vif->ssid, 1682 vif->req_bssid, vif->ch_hint, 1683 ar->connect_ctrl_flags, SUBTYPE_NONE); 1684 set_bit(CONNECT_PEND, &vif->flags); 1685 1686 return 0; 1687 } 1688 1689 static int ath6kl_cfg80211_leave_ibss(struct wiphy *wiphy, 1690 struct net_device *dev) 1691 { 1692 struct ath6kl_vif *vif = netdev_priv(dev); 1693 1694 if (!ath6kl_cfg80211_ready(vif)) 1695 return -EIO; 1696 1697 ath6kl_disconnect(vif); 1698 memset(vif->ssid, 0, sizeof(vif->ssid)); 1699 vif->ssid_len = 0; 1700 1701 return 0; 1702 } 1703 1704 static const u32 cipher_suites[] = { 1705 WLAN_CIPHER_SUITE_WEP40, 1706 WLAN_CIPHER_SUITE_WEP104, 1707 WLAN_CIPHER_SUITE_TKIP, 1708 WLAN_CIPHER_SUITE_CCMP, 1709 CCKM_KRK_CIPHER_SUITE, 1710 WLAN_CIPHER_SUITE_SMS4, 1711 }; 1712 1713 static bool is_rate_legacy(s32 rate) 1714 { 1715 static const s32 legacy[] = { 1000, 2000, 5500, 11000, 1716 6000, 9000, 12000, 18000, 24000, 1717 36000, 48000, 54000 1718 }; 1719 u8 i; 1720 1721 for (i = 0; i < ARRAY_SIZE(legacy); i++) 1722 if (rate == legacy[i]) 1723 return true; 1724 1725 return false; 1726 } 1727 1728 static bool is_rate_ht20(s32 rate, u8 *mcs, bool *sgi) 1729 { 1730 static const s32 ht20[] = { 6500, 13000, 19500, 26000, 39000, 1731 52000, 58500, 65000, 72200 1732 }; 1733 u8 i; 1734 1735 for (i = 0; i < ARRAY_SIZE(ht20); i++) { 1736 if (rate == ht20[i]) { 1737 if (i == ARRAY_SIZE(ht20) - 1) 1738 /* last rate uses sgi */ 1739 *sgi = true; 1740 else 1741 *sgi = false; 1742 1743 *mcs = i; 1744 return true; 1745 } 1746 } 1747 return false; 1748 } 1749 1750 static bool is_rate_ht40(s32 rate, u8 *mcs, bool *sgi) 1751 { 1752 static const s32 ht40[] = { 13500, 27000, 40500, 54000, 1753 81000, 108000, 121500, 135000, 1754 150000 1755 }; 1756 u8 i; 1757 1758 for (i = 0; i < ARRAY_SIZE(ht40); i++) { 1759 if (rate == ht40[i]) { 1760 if (i == ARRAY_SIZE(ht40) - 1) 1761 /* last rate uses sgi */ 1762 *sgi = true; 1763 else 1764 *sgi = false; 1765 1766 *mcs = i; 1767 return true; 1768 } 1769 } 1770 1771 return false; 1772 } 1773 1774 static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev, 1775 const u8 *mac, struct station_info *sinfo) 1776 { 1777 struct ath6kl *ar = ath6kl_priv(dev); 1778 struct ath6kl_vif *vif = netdev_priv(dev); 1779 long left; 1780 bool sgi; 1781 s32 rate; 1782 int ret; 1783 u8 mcs; 1784 1785 if (memcmp(mac, vif->bssid, ETH_ALEN) != 0) 1786 return -ENOENT; 1787 1788 if (down_interruptible(&ar->sem)) 1789 return -EBUSY; 1790 1791 set_bit(STATS_UPDATE_PEND, &vif->flags); 1792 1793 ret = ath6kl_wmi_get_stats_cmd(ar->wmi, vif->fw_vif_idx); 1794 1795 if (ret != 0) { 1796 up(&ar->sem); 1797 return -EIO; 1798 } 1799 1800 left = wait_event_interruptible_timeout(ar->event_wq, 1801 !test_bit(STATS_UPDATE_PEND, 1802 &vif->flags), 1803 WMI_TIMEOUT); 1804 1805 up(&ar->sem); 1806 1807 if (left == 0) 1808 return -ETIMEDOUT; 1809 else if (left < 0) 1810 return left; 1811 1812 if (vif->target_stats.rx_byte) { 1813 sinfo->rx_bytes = vif->target_stats.rx_byte; 1814 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BYTES64); 1815 sinfo->rx_packets = vif->target_stats.rx_pkt; 1816 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_PACKETS); 1817 } 1818 1819 if (vif->target_stats.tx_byte) { 1820 sinfo->tx_bytes = vif->target_stats.tx_byte; 1821 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES64); 1822 sinfo->tx_packets = vif->target_stats.tx_pkt; 1823 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_PACKETS); 1824 } 1825 1826 sinfo->signal = vif->target_stats.cs_rssi; 1827 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL); 1828 1829 rate = vif->target_stats.tx_ucast_rate; 1830 1831 if (is_rate_legacy(rate)) { 1832 sinfo->txrate.legacy = rate / 100; 1833 } else if (is_rate_ht20(rate, &mcs, &sgi)) { 1834 if (sgi) { 1835 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; 1836 sinfo->txrate.mcs = mcs - 1; 1837 } else { 1838 sinfo->txrate.mcs = mcs; 1839 } 1840 1841 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS; 1842 sinfo->txrate.bw = RATE_INFO_BW_20; 1843 } else if (is_rate_ht40(rate, &mcs, &sgi)) { 1844 if (sgi) { 1845 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; 1846 sinfo->txrate.mcs = mcs - 1; 1847 } else { 1848 sinfo->txrate.mcs = mcs; 1849 } 1850 1851 sinfo->txrate.bw = RATE_INFO_BW_40; 1852 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS; 1853 } else { 1854 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1855 "invalid rate from stats: %d\n", rate); 1856 ath6kl_debug_war(ar, ATH6KL_WAR_INVALID_RATE); 1857 return 0; 1858 } 1859 1860 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); 1861 1862 if (test_bit(CONNECTED, &vif->flags) && 1863 test_bit(DTIM_PERIOD_AVAIL, &vif->flags) && 1864 vif->nw_type == INFRA_NETWORK) { 1865 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BSS_PARAM); 1866 sinfo->bss_param.flags = 0; 1867 sinfo->bss_param.dtim_period = vif->assoc_bss_dtim_period; 1868 sinfo->bss_param.beacon_interval = vif->assoc_bss_beacon_int; 1869 } 1870 1871 return 0; 1872 } 1873 1874 static int ath6kl_set_pmksa(struct wiphy *wiphy, struct net_device *netdev, 1875 struct cfg80211_pmksa *pmksa) 1876 { 1877 struct ath6kl *ar = ath6kl_priv(netdev); 1878 struct ath6kl_vif *vif = netdev_priv(netdev); 1879 1880 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid, 1881 pmksa->pmkid, true); 1882 } 1883 1884 static int ath6kl_del_pmksa(struct wiphy *wiphy, struct net_device *netdev, 1885 struct cfg80211_pmksa *pmksa) 1886 { 1887 struct ath6kl *ar = ath6kl_priv(netdev); 1888 struct ath6kl_vif *vif = netdev_priv(netdev); 1889 1890 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid, 1891 pmksa->pmkid, false); 1892 } 1893 1894 static int ath6kl_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev) 1895 { 1896 struct ath6kl *ar = ath6kl_priv(netdev); 1897 struct ath6kl_vif *vif = netdev_priv(netdev); 1898 1899 if (test_bit(CONNECTED, &vif->flags)) 1900 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, 1901 vif->bssid, NULL, false); 1902 return 0; 1903 } 1904 1905 static int ath6kl_wow_usr(struct ath6kl *ar, struct ath6kl_vif *vif, 1906 struct cfg80211_wowlan *wow, u32 *filter) 1907 { 1908 int ret, pos; 1909 u8 mask[WOW_PATTERN_SIZE]; 1910 u16 i; 1911 1912 /* Configure the patterns that we received from the user. */ 1913 for (i = 0; i < wow->n_patterns; i++) { 1914 /* 1915 * Convert given nl80211 specific mask value to equivalent 1916 * driver specific mask value and send it to the chip along 1917 * with patterns. For example, If the mask value defined in 1918 * struct cfg80211_wowlan is 0xA (equivalent binary is 1010), 1919 * then equivalent driver specific mask value is 1920 * "0xFF 0x00 0xFF 0x00". 1921 */ 1922 memset(&mask, 0, sizeof(mask)); 1923 for (pos = 0; pos < wow->patterns[i].pattern_len; pos++) { 1924 if (wow->patterns[i].mask[pos / 8] & (0x1 << (pos % 8))) 1925 mask[pos] = 0xFF; 1926 } 1927 /* 1928 * Note: Pattern's offset is not passed as part of wowlan 1929 * parameter from CFG layer. So it's always passed as ZERO 1930 * to the firmware. It means, given WOW patterns are always 1931 * matched from the first byte of received pkt in the firmware. 1932 */ 1933 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi, 1934 vif->fw_vif_idx, WOW_LIST_ID, 1935 wow->patterns[i].pattern_len, 1936 0 /* pattern offset */, 1937 wow->patterns[i].pattern, mask); 1938 if (ret) 1939 return ret; 1940 } 1941 1942 if (wow->disconnect) 1943 *filter |= WOW_FILTER_OPTION_NWK_DISASSOC; 1944 1945 if (wow->magic_pkt) 1946 *filter |= WOW_FILTER_OPTION_MAGIC_PACKET; 1947 1948 if (wow->gtk_rekey_failure) 1949 *filter |= WOW_FILTER_OPTION_GTK_ERROR; 1950 1951 if (wow->eap_identity_req) 1952 *filter |= WOW_FILTER_OPTION_EAP_REQ; 1953 1954 if (wow->four_way_handshake) 1955 *filter |= WOW_FILTER_OPTION_8021X_4WAYHS; 1956 1957 return 0; 1958 } 1959 1960 static int ath6kl_wow_ap(struct ath6kl *ar, struct ath6kl_vif *vif) 1961 { 1962 static const u8 unicst_pattern[] = { 0x00, 0x00, 0x00, 1963 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1964 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1965 0x00, 0x08 }; 1966 static const u8 unicst_mask[] = { 0x01, 0x00, 0x00, 1967 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1968 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1969 0x00, 0x7f }; 1970 u8 unicst_offset = 0; 1971 static const u8 arp_pattern[] = { 0x08, 0x06 }; 1972 static const u8 arp_mask[] = { 0xff, 0xff }; 1973 u8 arp_offset = 20; 1974 static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 }; 1975 static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 }; 1976 u8 discvr_offset = 38; 1977 static const u8 dhcp_pattern[] = { 0xff, 0xff, 0xff, 0xff, 1978 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1979 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 1980 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1981 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1982 0x00, 0x00, 0x00, 0x00, 0x00, 0x43 /* port 67 */ }; 1983 static const u8 dhcp_mask[] = { 0xff, 0xff, 0xff, 0xff, 1984 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1985 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 1986 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1987 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1988 0x00, 0x00, 0x00, 0x00, 0xff, 0xff /* port 67 */ }; 1989 u8 dhcp_offset = 0; 1990 int ret; 1991 1992 /* Setup unicast IP, EAPOL-like and ARP pkt pattern */ 1993 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi, 1994 vif->fw_vif_idx, WOW_LIST_ID, 1995 sizeof(unicst_pattern), unicst_offset, 1996 unicst_pattern, unicst_mask); 1997 if (ret) { 1998 ath6kl_err("failed to add WOW unicast IP pattern\n"); 1999 return ret; 2000 } 2001 2002 /* Setup all ARP pkt pattern */ 2003 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi, 2004 vif->fw_vif_idx, WOW_LIST_ID, 2005 sizeof(arp_pattern), arp_offset, 2006 arp_pattern, arp_mask); 2007 if (ret) { 2008 ath6kl_err("failed to add WOW ARP pattern\n"); 2009 return ret; 2010 } 2011 2012 /* 2013 * Setup multicast pattern for mDNS 224.0.0.251, 2014 * SSDP 239.255.255.250 and LLMNR 224.0.0.252 2015 */ 2016 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi, 2017 vif->fw_vif_idx, WOW_LIST_ID, 2018 sizeof(discvr_pattern), discvr_offset, 2019 discvr_pattern, discvr_mask); 2020 if (ret) { 2021 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n"); 2022 return ret; 2023 } 2024 2025 /* Setup all DHCP broadcast pkt pattern */ 2026 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi, 2027 vif->fw_vif_idx, WOW_LIST_ID, 2028 sizeof(dhcp_pattern), dhcp_offset, 2029 dhcp_pattern, dhcp_mask); 2030 if (ret) { 2031 ath6kl_err("failed to add WOW DHCP broadcast pattern\n"); 2032 return ret; 2033 } 2034 2035 return 0; 2036 } 2037 2038 static int ath6kl_wow_sta(struct ath6kl *ar, struct ath6kl_vif *vif) 2039 { 2040 struct net_device *ndev = vif->ndev; 2041 static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 }; 2042 static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 }; 2043 u8 discvr_offset = 38; 2044 u8 mac_mask[ETH_ALEN]; 2045 int ret; 2046 2047 /* Setup unicast pkt pattern */ 2048 eth_broadcast_addr(mac_mask); 2049 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi, 2050 vif->fw_vif_idx, WOW_LIST_ID, 2051 ETH_ALEN, 0, ndev->dev_addr, 2052 mac_mask); 2053 if (ret) { 2054 ath6kl_err("failed to add WOW unicast pattern\n"); 2055 return ret; 2056 } 2057 2058 /* 2059 * Setup multicast pattern for mDNS 224.0.0.251, 2060 * SSDP 239.255.255.250 and LLMNR 224.0.0.252 2061 */ 2062 if ((ndev->flags & IFF_ALLMULTI) || 2063 (ndev->flags & IFF_MULTICAST && netdev_mc_count(ndev) > 0)) { 2064 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi, 2065 vif->fw_vif_idx, WOW_LIST_ID, 2066 sizeof(discvr_pattern), discvr_offset, 2067 discvr_pattern, discvr_mask); 2068 if (ret) { 2069 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n"); 2070 return ret; 2071 } 2072 } 2073 2074 return 0; 2075 } 2076 2077 static int is_hsleep_mode_procsed(struct ath6kl_vif *vif) 2078 { 2079 return test_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags); 2080 } 2081 2082 static bool is_ctrl_ep_empty(struct ath6kl *ar) 2083 { 2084 return !ar->tx_pending[ar->ctrl_ep]; 2085 } 2086 2087 static int ath6kl_cfg80211_host_sleep(struct ath6kl *ar, struct ath6kl_vif *vif) 2088 { 2089 int ret, left; 2090 2091 clear_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags); 2092 2093 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx, 2094 ATH6KL_HOST_MODE_ASLEEP); 2095 if (ret) 2096 return ret; 2097 2098 left = wait_event_interruptible_timeout(ar->event_wq, 2099 is_hsleep_mode_procsed(vif), 2100 WMI_TIMEOUT); 2101 if (left == 0) { 2102 ath6kl_warn("timeout, didn't get host sleep cmd processed event\n"); 2103 ret = -ETIMEDOUT; 2104 } else if (left < 0) { 2105 ath6kl_warn("error while waiting for host sleep cmd processed event %d\n", 2106 left); 2107 ret = left; 2108 } 2109 2110 if (ar->tx_pending[ar->ctrl_ep]) { 2111 left = wait_event_interruptible_timeout(ar->event_wq, 2112 is_ctrl_ep_empty(ar), 2113 WMI_TIMEOUT); 2114 if (left == 0) { 2115 ath6kl_warn("clear wmi ctrl data timeout\n"); 2116 ret = -ETIMEDOUT; 2117 } else if (left < 0) { 2118 ath6kl_warn("clear wmi ctrl data failed: %d\n", left); 2119 ret = left; 2120 } 2121 } 2122 2123 return ret; 2124 } 2125 2126 static int ath6kl_wow_suspend_vif(struct ath6kl_vif *vif, 2127 struct cfg80211_wowlan *wow, u32 *filter) 2128 { 2129 struct ath6kl *ar = vif->ar; 2130 struct in_device *in_dev; 2131 struct in_ifaddr *ifa; 2132 int ret; 2133 u16 i, bmiss_time; 2134 __be32 ips[MAX_IP_ADDRS]; 2135 u8 index = 0; 2136 2137 if (!test_bit(NETDEV_MCAST_ALL_ON, &vif->flags) && 2138 test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER, 2139 ar->fw_capabilities)) { 2140 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, 2141 vif->fw_vif_idx, false); 2142 if (ret) 2143 return ret; 2144 } 2145 2146 /* Clear existing WOW patterns */ 2147 for (i = 0; i < WOW_MAX_FILTERS_PER_LIST; i++) 2148 ath6kl_wmi_del_wow_pattern_cmd(ar->wmi, vif->fw_vif_idx, 2149 WOW_LIST_ID, i); 2150 2151 /* 2152 * Skip the default WOW pattern configuration 2153 * if the driver receives any WOW patterns from 2154 * the user. 2155 */ 2156 if (wow) 2157 ret = ath6kl_wow_usr(ar, vif, wow, filter); 2158 else if (vif->nw_type == AP_NETWORK) 2159 ret = ath6kl_wow_ap(ar, vif); 2160 else 2161 ret = ath6kl_wow_sta(ar, vif); 2162 2163 if (ret) 2164 return ret; 2165 2166 netif_stop_queue(vif->ndev); 2167 2168 if (vif->nw_type != AP_NETWORK) { 2169 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 2170 ATH6KL_MAX_WOW_LISTEN_INTL, 2171 0); 2172 if (ret) 2173 return ret; 2174 2175 /* Set listen interval x 15 times as bmiss time */ 2176 bmiss_time = ATH6KL_MAX_WOW_LISTEN_INTL * 15; 2177 if (bmiss_time > ATH6KL_MAX_BMISS_TIME) 2178 bmiss_time = ATH6KL_MAX_BMISS_TIME; 2179 2180 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx, 2181 bmiss_time, 0); 2182 if (ret) 2183 return ret; 2184 2185 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 2186 0xFFFF, 0, 0xFFFF, 0, 0, 0, 2187 0, 0, 0, 0); 2188 if (ret) 2189 return ret; 2190 } 2191 2192 /* Setup own IP addr for ARP agent. */ 2193 in_dev = __in_dev_get_rtnl(vif->ndev); 2194 if (!in_dev) 2195 return 0; 2196 2197 ifa = rtnl_dereference(in_dev->ifa_list); 2198 memset(&ips, 0, sizeof(ips)); 2199 2200 /* Configure IP addr only if IP address count < MAX_IP_ADDRS */ 2201 while (index < MAX_IP_ADDRS && ifa) { 2202 ips[index] = ifa->ifa_local; 2203 ifa = rtnl_dereference(ifa->ifa_next); 2204 index++; 2205 } 2206 2207 if (ifa) { 2208 ath6kl_err("total IP addr count is exceeding fw limit\n"); 2209 return -EINVAL; 2210 } 2211 2212 ret = ath6kl_wmi_set_ip_cmd(ar->wmi, vif->fw_vif_idx, ips[0], ips[1]); 2213 if (ret) { 2214 ath6kl_err("fail to setup ip for arp agent\n"); 2215 return ret; 2216 } 2217 2218 return ret; 2219 } 2220 2221 static int ath6kl_wow_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow) 2222 { 2223 struct ath6kl_vif *first_vif, *vif; 2224 int ret = 0; 2225 u32 filter = 0; 2226 bool connected = false; 2227 2228 /* enter / leave wow suspend on first vif always */ 2229 first_vif = ath6kl_vif_first(ar); 2230 if (WARN_ON(!first_vif) || 2231 !ath6kl_cfg80211_ready(first_vif)) 2232 return -EIO; 2233 2234 if (wow && (wow->n_patterns > WOW_MAX_FILTERS_PER_LIST)) 2235 return -EINVAL; 2236 2237 /* install filters for each connected vif */ 2238 spin_lock_bh(&ar->list_lock); 2239 list_for_each_entry(vif, &ar->vif_list, list) { 2240 if (!test_bit(CONNECTED, &vif->flags) || 2241 !ath6kl_cfg80211_ready(vif)) 2242 continue; 2243 connected = true; 2244 2245 ret = ath6kl_wow_suspend_vif(vif, wow, &filter); 2246 if (ret) 2247 break; 2248 } 2249 spin_unlock_bh(&ar->list_lock); 2250 2251 if (!connected) 2252 return -ENOTCONN; 2253 else if (ret) 2254 return ret; 2255 2256 ar->state = ATH6KL_STATE_SUSPENDING; 2257 2258 ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, first_vif->fw_vif_idx, 2259 ATH6KL_WOW_MODE_ENABLE, 2260 filter, 2261 WOW_HOST_REQ_DELAY); 2262 if (ret) 2263 return ret; 2264 2265 return ath6kl_cfg80211_host_sleep(ar, first_vif); 2266 } 2267 2268 static int ath6kl_wow_resume_vif(struct ath6kl_vif *vif) 2269 { 2270 struct ath6kl *ar = vif->ar; 2271 int ret; 2272 2273 if (vif->nw_type != AP_NETWORK) { 2274 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 2275 0, 0, 0, 0, 0, 0, 3, 0, 0, 0); 2276 if (ret) 2277 return ret; 2278 2279 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 2280 vif->listen_intvl_t, 0); 2281 if (ret) 2282 return ret; 2283 2284 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx, 2285 vif->bmiss_time_t, 0); 2286 if (ret) 2287 return ret; 2288 } 2289 2290 if (!test_bit(NETDEV_MCAST_ALL_OFF, &vif->flags) && 2291 test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER, 2292 ar->fw_capabilities)) { 2293 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, 2294 vif->fw_vif_idx, true); 2295 if (ret) 2296 return ret; 2297 } 2298 2299 netif_wake_queue(vif->ndev); 2300 2301 return 0; 2302 } 2303 2304 static int ath6kl_wow_resume(struct ath6kl *ar) 2305 { 2306 struct ath6kl_vif *vif; 2307 int ret; 2308 2309 vif = ath6kl_vif_first(ar); 2310 if (WARN_ON(!vif) || 2311 !ath6kl_cfg80211_ready(vif)) 2312 return -EIO; 2313 2314 ar->state = ATH6KL_STATE_RESUMING; 2315 2316 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx, 2317 ATH6KL_HOST_MODE_AWAKE); 2318 if (ret) { 2319 ath6kl_warn("Failed to configure host sleep mode for wow resume: %d\n", 2320 ret); 2321 goto cleanup; 2322 } 2323 2324 spin_lock_bh(&ar->list_lock); 2325 list_for_each_entry(vif, &ar->vif_list, list) { 2326 if (!test_bit(CONNECTED, &vif->flags) || 2327 !ath6kl_cfg80211_ready(vif)) 2328 continue; 2329 ret = ath6kl_wow_resume_vif(vif); 2330 if (ret) 2331 break; 2332 } 2333 spin_unlock_bh(&ar->list_lock); 2334 2335 if (ret) 2336 goto cleanup; 2337 2338 ar->state = ATH6KL_STATE_ON; 2339 return 0; 2340 2341 cleanup: 2342 ar->state = ATH6KL_STATE_WOW; 2343 return ret; 2344 } 2345 2346 static int ath6kl_cfg80211_deepsleep_suspend(struct ath6kl *ar) 2347 { 2348 struct ath6kl_vif *vif; 2349 int ret; 2350 2351 vif = ath6kl_vif_first(ar); 2352 if (!vif) 2353 return -EIO; 2354 2355 if (!test_bit(WMI_READY, &ar->flag)) { 2356 ath6kl_err("deepsleep failed as wmi is not ready\n"); 2357 return -EIO; 2358 } 2359 2360 ath6kl_cfg80211_stop_all(ar); 2361 2362 /* Save the current power mode before enabling power save */ 2363 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode; 2364 2365 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER); 2366 if (ret) 2367 return ret; 2368 2369 /* Disable WOW mode */ 2370 ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx, 2371 ATH6KL_WOW_MODE_DISABLE, 2372 0, 0); 2373 if (ret) 2374 return ret; 2375 2376 /* Flush all non control pkts in TX path */ 2377 ath6kl_tx_data_cleanup(ar); 2378 2379 ret = ath6kl_cfg80211_host_sleep(ar, vif); 2380 if (ret) 2381 return ret; 2382 2383 return 0; 2384 } 2385 2386 static int ath6kl_cfg80211_deepsleep_resume(struct ath6kl *ar) 2387 { 2388 struct ath6kl_vif *vif; 2389 int ret; 2390 2391 vif = ath6kl_vif_first(ar); 2392 2393 if (!vif) 2394 return -EIO; 2395 2396 if (ar->wmi->pwr_mode != ar->wmi->saved_pwr_mode) { 2397 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0, 2398 ar->wmi->saved_pwr_mode); 2399 if (ret) 2400 return ret; 2401 } 2402 2403 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx, 2404 ATH6KL_HOST_MODE_AWAKE); 2405 if (ret) 2406 return ret; 2407 2408 ar->state = ATH6KL_STATE_ON; 2409 2410 /* Reset scan parameter to default values */ 2411 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 2412 0, 0, 0, 0, 0, 0, 3, 0, 0, 0); 2413 if (ret) 2414 return ret; 2415 2416 return 0; 2417 } 2418 2419 int ath6kl_cfg80211_suspend(struct ath6kl *ar, 2420 enum ath6kl_cfg_suspend_mode mode, 2421 struct cfg80211_wowlan *wow) 2422 { 2423 struct ath6kl_vif *vif; 2424 enum ath6kl_state prev_state; 2425 int ret; 2426 2427 switch (mode) { 2428 case ATH6KL_CFG_SUSPEND_WOW: 2429 2430 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode suspend\n"); 2431 2432 /* Flush all non control pkts in TX path */ 2433 ath6kl_tx_data_cleanup(ar); 2434 2435 prev_state = ar->state; 2436 2437 ret = ath6kl_wow_suspend(ar, wow); 2438 if (ret) { 2439 ar->state = prev_state; 2440 return ret; 2441 } 2442 2443 ar->state = ATH6KL_STATE_WOW; 2444 break; 2445 2446 case ATH6KL_CFG_SUSPEND_DEEPSLEEP: 2447 2448 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep suspend\n"); 2449 2450 ret = ath6kl_cfg80211_deepsleep_suspend(ar); 2451 if (ret) { 2452 ath6kl_err("deepsleep suspend failed: %d\n", ret); 2453 return ret; 2454 } 2455 2456 ar->state = ATH6KL_STATE_DEEPSLEEP; 2457 2458 break; 2459 2460 case ATH6KL_CFG_SUSPEND_CUTPOWER: 2461 2462 ath6kl_cfg80211_stop_all(ar); 2463 2464 if (ar->state == ATH6KL_STATE_OFF) { 2465 ath6kl_dbg(ATH6KL_DBG_SUSPEND, 2466 "suspend hw off, no action for cutpower\n"); 2467 break; 2468 } 2469 2470 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "suspend cutting power\n"); 2471 2472 ret = ath6kl_init_hw_stop(ar); 2473 if (ret) { 2474 ath6kl_warn("failed to stop hw during suspend: %d\n", 2475 ret); 2476 } 2477 2478 ar->state = ATH6KL_STATE_CUTPOWER; 2479 2480 break; 2481 2482 default: 2483 break; 2484 } 2485 2486 list_for_each_entry(vif, &ar->vif_list, list) 2487 ath6kl_cfg80211_scan_complete_event(vif, true); 2488 2489 return 0; 2490 } 2491 EXPORT_SYMBOL(ath6kl_cfg80211_suspend); 2492 2493 int ath6kl_cfg80211_resume(struct ath6kl *ar) 2494 { 2495 int ret; 2496 2497 switch (ar->state) { 2498 case ATH6KL_STATE_WOW: 2499 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode resume\n"); 2500 2501 ret = ath6kl_wow_resume(ar); 2502 if (ret) { 2503 ath6kl_warn("wow mode resume failed: %d\n", ret); 2504 return ret; 2505 } 2506 2507 break; 2508 2509 case ATH6KL_STATE_DEEPSLEEP: 2510 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep resume\n"); 2511 2512 ret = ath6kl_cfg80211_deepsleep_resume(ar); 2513 if (ret) { 2514 ath6kl_warn("deep sleep resume failed: %d\n", ret); 2515 return ret; 2516 } 2517 break; 2518 2519 case ATH6KL_STATE_CUTPOWER: 2520 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "resume restoring power\n"); 2521 2522 ret = ath6kl_init_hw_start(ar); 2523 if (ret) { 2524 ath6kl_warn("Failed to boot hw in resume: %d\n", ret); 2525 return ret; 2526 } 2527 break; 2528 2529 default: 2530 break; 2531 } 2532 2533 return 0; 2534 } 2535 EXPORT_SYMBOL(ath6kl_cfg80211_resume); 2536 2537 #ifdef CONFIG_PM 2538 2539 /* hif layer decides what suspend mode to use */ 2540 static int __ath6kl_cfg80211_suspend(struct wiphy *wiphy, 2541 struct cfg80211_wowlan *wow) 2542 { 2543 struct ath6kl *ar = wiphy_priv(wiphy); 2544 2545 ath6kl_recovery_suspend(ar); 2546 2547 return ath6kl_hif_suspend(ar, wow); 2548 } 2549 2550 static int __ath6kl_cfg80211_resume(struct wiphy *wiphy) 2551 { 2552 struct ath6kl *ar = wiphy_priv(wiphy); 2553 int err; 2554 2555 err = ath6kl_hif_resume(ar); 2556 if (err) 2557 return err; 2558 2559 ath6kl_recovery_resume(ar); 2560 2561 return 0; 2562 } 2563 2564 /* 2565 * FIXME: WOW suspend mode is selected if the host sdio controller supports 2566 * both sdio irq wake up and keep power. The target pulls sdio data line to 2567 * wake up the host when WOW pattern matches. This causes sdio irq handler 2568 * is being called in the host side which internally hits ath6kl's RX path. 2569 * 2570 * Since sdio interrupt is not disabled, RX path executes even before 2571 * the host executes the actual resume operation from PM module. 2572 * 2573 * In the current scenario, WOW resume should happen before start processing 2574 * any data from the target. So It's required to perform WOW resume in RX path. 2575 * Ideally we should perform WOW resume only in the actual platform 2576 * resume path. This area needs bit rework to avoid WOW resume in RX path. 2577 * 2578 * ath6kl_check_wow_status() is called from ath6kl_rx(). 2579 */ 2580 void ath6kl_check_wow_status(struct ath6kl *ar) 2581 { 2582 if (ar->state == ATH6KL_STATE_SUSPENDING) 2583 return; 2584 2585 if (ar->state == ATH6KL_STATE_WOW) 2586 ath6kl_cfg80211_resume(ar); 2587 } 2588 2589 #else 2590 2591 void ath6kl_check_wow_status(struct ath6kl *ar) 2592 { 2593 } 2594 #endif 2595 2596 static int ath6kl_set_htcap(struct ath6kl_vif *vif, enum nl80211_band band, 2597 bool ht_enable) 2598 { 2599 struct ath6kl_htcap *htcap = &vif->htcap[band]; 2600 2601 if (htcap->ht_enable == ht_enable) 2602 return 0; 2603 2604 if (ht_enable) { 2605 /* Set default ht capabilities */ 2606 htcap->ht_enable = true; 2607 htcap->cap_info = (band == NL80211_BAND_2GHZ) ? 2608 ath6kl_g_htcap : ath6kl_a_htcap; 2609 htcap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K; 2610 } else /* Disable ht */ 2611 memset(htcap, 0, sizeof(*htcap)); 2612 2613 return ath6kl_wmi_set_htcap_cmd(vif->ar->wmi, vif->fw_vif_idx, 2614 band, htcap); 2615 } 2616 2617 static int ath6kl_restore_htcap(struct ath6kl_vif *vif) 2618 { 2619 struct wiphy *wiphy = vif->ar->wiphy; 2620 int band, ret = 0; 2621 2622 for (band = 0; band < NUM_NL80211_BANDS; band++) { 2623 if (!wiphy->bands[band]) 2624 continue; 2625 2626 ret = ath6kl_set_htcap(vif, band, 2627 wiphy->bands[band]->ht_cap.ht_supported); 2628 if (ret) 2629 return ret; 2630 } 2631 2632 return ret; 2633 } 2634 2635 static bool ath6kl_is_p2p_ie(const u8 *pos) 2636 { 2637 return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 && 2638 pos[2] == 0x50 && pos[3] == 0x6f && 2639 pos[4] == 0x9a && pos[5] == 0x09; 2640 } 2641 2642 static int ath6kl_set_ap_probe_resp_ies(struct ath6kl_vif *vif, 2643 const u8 *ies, size_t ies_len) 2644 { 2645 struct ath6kl *ar = vif->ar; 2646 const u8 *pos; 2647 u8 *buf = NULL; 2648 size_t len = 0; 2649 int ret; 2650 2651 /* 2652 * Filter out P2P IE(s) since they will be included depending on 2653 * the Probe Request frame in ath6kl_send_go_probe_resp(). 2654 */ 2655 2656 if (ies && ies_len) { 2657 buf = kmalloc(ies_len, GFP_KERNEL); 2658 if (buf == NULL) 2659 return -ENOMEM; 2660 pos = ies; 2661 while (pos + 1 < ies + ies_len) { 2662 if (pos + 2 + pos[1] > ies + ies_len) 2663 break; 2664 if (!ath6kl_is_p2p_ie(pos)) { 2665 memcpy(buf + len, pos, 2 + pos[1]); 2666 len += 2 + pos[1]; 2667 } 2668 pos += 2 + pos[1]; 2669 } 2670 } 2671 2672 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx, 2673 WMI_FRAME_PROBE_RESP, buf, len); 2674 kfree(buf); 2675 return ret; 2676 } 2677 2678 static int ath6kl_set_ies(struct ath6kl_vif *vif, 2679 struct cfg80211_beacon_data *info) 2680 { 2681 struct ath6kl *ar = vif->ar; 2682 int res; 2683 2684 /* this also clears IE in fw if it's not set */ 2685 res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx, 2686 WMI_FRAME_BEACON, 2687 info->beacon_ies, 2688 info->beacon_ies_len); 2689 if (res) 2690 return res; 2691 2692 /* this also clears IE in fw if it's not set */ 2693 res = ath6kl_set_ap_probe_resp_ies(vif, info->proberesp_ies, 2694 info->proberesp_ies_len); 2695 if (res) 2696 return res; 2697 2698 /* this also clears IE in fw if it's not set */ 2699 res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx, 2700 WMI_FRAME_ASSOC_RESP, 2701 info->assocresp_ies, 2702 info->assocresp_ies_len); 2703 if (res) 2704 return res; 2705 2706 return 0; 2707 } 2708 2709 static int ath6kl_get_rsn_capab(struct cfg80211_beacon_data *beacon, 2710 u8 *rsn_capab) 2711 { 2712 const u8 *rsn_ie; 2713 size_t rsn_ie_len; 2714 u16 cnt; 2715 2716 if (!beacon->tail) 2717 return -EINVAL; 2718 2719 rsn_ie = cfg80211_find_ie(WLAN_EID_RSN, beacon->tail, beacon->tail_len); 2720 if (!rsn_ie) 2721 return -EINVAL; 2722 2723 rsn_ie_len = *(rsn_ie + 1); 2724 /* skip element id and length */ 2725 rsn_ie += 2; 2726 2727 /* skip version */ 2728 if (rsn_ie_len < 2) 2729 return -EINVAL; 2730 rsn_ie += 2; 2731 rsn_ie_len -= 2; 2732 2733 /* skip group cipher suite */ 2734 if (rsn_ie_len < 4) 2735 return 0; 2736 rsn_ie += 4; 2737 rsn_ie_len -= 4; 2738 2739 /* skip pairwise cipher suite */ 2740 if (rsn_ie_len < 2) 2741 return 0; 2742 cnt = get_unaligned_le16(rsn_ie); 2743 rsn_ie += (2 + cnt * 4); 2744 rsn_ie_len -= (2 + cnt * 4); 2745 2746 /* skip akm suite */ 2747 if (rsn_ie_len < 2) 2748 return 0; 2749 cnt = get_unaligned_le16(rsn_ie); 2750 rsn_ie += (2 + cnt * 4); 2751 rsn_ie_len -= (2 + cnt * 4); 2752 2753 if (rsn_ie_len < 2) 2754 return 0; 2755 2756 memcpy(rsn_capab, rsn_ie, 2); 2757 2758 return 0; 2759 } 2760 2761 static int ath6kl_start_ap(struct wiphy *wiphy, struct net_device *dev, 2762 struct cfg80211_ap_settings *info) 2763 { 2764 struct ath6kl *ar = ath6kl_priv(dev); 2765 struct ath6kl_vif *vif = netdev_priv(dev); 2766 struct ieee80211_mgmt *mgmt; 2767 bool hidden = false; 2768 u8 *ies; 2769 struct wmi_connect_cmd p; 2770 int res; 2771 int i, ret; 2772 u16 rsn_capab = 0; 2773 int inactivity_timeout = 0; 2774 2775 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s:\n", __func__); 2776 2777 if (!ath6kl_cfg80211_ready(vif)) 2778 return -EIO; 2779 2780 if (vif->next_mode != AP_NETWORK) 2781 return -EOPNOTSUPP; 2782 2783 res = ath6kl_set_ies(vif, &info->beacon); 2784 2785 ar->ap_mode_bkey.valid = false; 2786 2787 ret = ath6kl_wmi_ap_set_beacon_intvl_cmd(ar->wmi, vif->fw_vif_idx, 2788 info->beacon_interval); 2789 2790 if (ret) 2791 ath6kl_warn("Failed to set beacon interval: %d\n", ret); 2792 2793 ret = ath6kl_wmi_ap_set_dtim_cmd(ar->wmi, vif->fw_vif_idx, 2794 info->dtim_period); 2795 2796 /* ignore error, just print a warning and continue normally */ 2797 if (ret) 2798 ath6kl_warn("Failed to set dtim_period in beacon: %d\n", ret); 2799 2800 if (info->beacon.head == NULL) 2801 return -EINVAL; 2802 mgmt = (struct ieee80211_mgmt *) info->beacon.head; 2803 ies = mgmt->u.beacon.variable; 2804 if (ies > info->beacon.head + info->beacon.head_len) 2805 return -EINVAL; 2806 2807 if (info->ssid == NULL) 2808 return -EINVAL; 2809 memcpy(vif->ssid, info->ssid, info->ssid_len); 2810 vif->ssid_len = info->ssid_len; 2811 if (info->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE) 2812 hidden = true; 2813 2814 res = ath6kl_wmi_ap_hidden_ssid(ar->wmi, vif->fw_vif_idx, hidden); 2815 if (res) 2816 return res; 2817 2818 ret = ath6kl_set_auth_type(vif, info->auth_type); 2819 if (ret) 2820 return ret; 2821 2822 memset(&p, 0, sizeof(p)); 2823 2824 for (i = 0; i < info->crypto.n_akm_suites; i++) { 2825 switch (info->crypto.akm_suites[i]) { 2826 case WLAN_AKM_SUITE_8021X: 2827 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1) 2828 p.auth_mode |= WPA_AUTH; 2829 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2) 2830 p.auth_mode |= WPA2_AUTH; 2831 break; 2832 case WLAN_AKM_SUITE_PSK: 2833 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1) 2834 p.auth_mode |= WPA_PSK_AUTH; 2835 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2) 2836 p.auth_mode |= WPA2_PSK_AUTH; 2837 break; 2838 } 2839 } 2840 if (p.auth_mode == 0) 2841 p.auth_mode = NONE_AUTH; 2842 vif->auth_mode = p.auth_mode; 2843 2844 for (i = 0; i < info->crypto.n_ciphers_pairwise; i++) { 2845 switch (info->crypto.ciphers_pairwise[i]) { 2846 case WLAN_CIPHER_SUITE_WEP40: 2847 case WLAN_CIPHER_SUITE_WEP104: 2848 p.prwise_crypto_type |= WEP_CRYPT; 2849 break; 2850 case WLAN_CIPHER_SUITE_TKIP: 2851 p.prwise_crypto_type |= TKIP_CRYPT; 2852 break; 2853 case WLAN_CIPHER_SUITE_CCMP: 2854 p.prwise_crypto_type |= AES_CRYPT; 2855 break; 2856 case WLAN_CIPHER_SUITE_SMS4: 2857 p.prwise_crypto_type |= WAPI_CRYPT; 2858 break; 2859 } 2860 } 2861 if (p.prwise_crypto_type == 0) { 2862 p.prwise_crypto_type = NONE_CRYPT; 2863 ath6kl_set_cipher(vif, 0, true); 2864 } else if (info->crypto.n_ciphers_pairwise == 1) { 2865 ath6kl_set_cipher(vif, info->crypto.ciphers_pairwise[0], true); 2866 } 2867 2868 switch (info->crypto.cipher_group) { 2869 case WLAN_CIPHER_SUITE_WEP40: 2870 case WLAN_CIPHER_SUITE_WEP104: 2871 p.grp_crypto_type = WEP_CRYPT; 2872 break; 2873 case WLAN_CIPHER_SUITE_TKIP: 2874 p.grp_crypto_type = TKIP_CRYPT; 2875 break; 2876 case WLAN_CIPHER_SUITE_CCMP: 2877 p.grp_crypto_type = AES_CRYPT; 2878 break; 2879 case WLAN_CIPHER_SUITE_SMS4: 2880 p.grp_crypto_type = WAPI_CRYPT; 2881 break; 2882 default: 2883 p.grp_crypto_type = NONE_CRYPT; 2884 break; 2885 } 2886 ath6kl_set_cipher(vif, info->crypto.cipher_group, false); 2887 2888 p.nw_type = AP_NETWORK; 2889 vif->nw_type = vif->next_mode; 2890 2891 p.ssid_len = vif->ssid_len; 2892 memcpy(p.ssid, vif->ssid, vif->ssid_len); 2893 p.dot11_auth_mode = vif->dot11_auth_mode; 2894 p.ch = cpu_to_le16(info->chandef.chan->center_freq); 2895 2896 /* Enable uAPSD support by default */ 2897 res = ath6kl_wmi_ap_set_apsd(ar->wmi, vif->fw_vif_idx, true); 2898 if (res < 0) 2899 return res; 2900 2901 if (vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) { 2902 p.nw_subtype = SUBTYPE_P2PGO; 2903 } else { 2904 /* 2905 * Due to firmware limitation, it is not possible to 2906 * do P2P mgmt operations in AP mode 2907 */ 2908 p.nw_subtype = SUBTYPE_NONE; 2909 } 2910 2911 if (info->inactivity_timeout) { 2912 inactivity_timeout = info->inactivity_timeout; 2913 2914 if (test_bit(ATH6KL_FW_CAPABILITY_AP_INACTIVITY_MINS, 2915 ar->fw_capabilities)) 2916 inactivity_timeout = DIV_ROUND_UP(inactivity_timeout, 2917 60); 2918 2919 res = ath6kl_wmi_set_inact_period(ar->wmi, vif->fw_vif_idx, 2920 inactivity_timeout); 2921 if (res < 0) 2922 return res; 2923 } 2924 2925 if (ath6kl_set_htcap(vif, info->chandef.chan->band, 2926 cfg80211_get_chandef_type(&info->chandef) 2927 != NL80211_CHAN_NO_HT)) 2928 return -EIO; 2929 2930 /* 2931 * Get the PTKSA replay counter in the RSN IE. Supplicant 2932 * will use the RSN IE in M3 message and firmware has to 2933 * advertise the same in beacon/probe response. Send 2934 * the complete RSN IE capability field to firmware 2935 */ 2936 if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *) &rsn_capab) && 2937 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE, 2938 ar->fw_capabilities)) { 2939 res = ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx, 2940 WLAN_EID_RSN, WMI_RSN_IE_CAPB, 2941 (const u8 *) &rsn_capab, 2942 sizeof(rsn_capab)); 2943 vif->rsn_capab = rsn_capab; 2944 if (res < 0) 2945 return res; 2946 } 2947 2948 memcpy(&vif->profile, &p, sizeof(p)); 2949 res = ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx, &p); 2950 if (res < 0) 2951 return res; 2952 2953 return 0; 2954 } 2955 2956 static int ath6kl_change_beacon(struct wiphy *wiphy, struct net_device *dev, 2957 struct cfg80211_beacon_data *beacon) 2958 { 2959 struct ath6kl_vif *vif = netdev_priv(dev); 2960 2961 if (!ath6kl_cfg80211_ready(vif)) 2962 return -EIO; 2963 2964 if (vif->next_mode != AP_NETWORK) 2965 return -EOPNOTSUPP; 2966 2967 return ath6kl_set_ies(vif, beacon); 2968 } 2969 2970 static int ath6kl_stop_ap(struct wiphy *wiphy, struct net_device *dev, 2971 unsigned int link_id) 2972 { 2973 struct ath6kl *ar = ath6kl_priv(dev); 2974 struct ath6kl_vif *vif = netdev_priv(dev); 2975 2976 if (vif->nw_type != AP_NETWORK) 2977 return -EOPNOTSUPP; 2978 if (!test_bit(CONNECTED, &vif->flags)) 2979 return -ENOTCONN; 2980 2981 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx); 2982 clear_bit(CONNECTED, &vif->flags); 2983 netif_carrier_off(vif->ndev); 2984 2985 /* Restore ht setting in firmware */ 2986 return ath6kl_restore_htcap(vif); 2987 } 2988 2989 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 2990 2991 static int ath6kl_del_station(struct wiphy *wiphy, struct net_device *dev, 2992 struct station_del_parameters *params) 2993 { 2994 struct ath6kl *ar = ath6kl_priv(dev); 2995 struct ath6kl_vif *vif = netdev_priv(dev); 2996 const u8 *addr = params->mac ? params->mac : bcast_addr; 2997 2998 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx, WMI_AP_DEAUTH, 2999 addr, WLAN_REASON_PREV_AUTH_NOT_VALID); 3000 } 3001 3002 static int ath6kl_change_station(struct wiphy *wiphy, struct net_device *dev, 3003 const u8 *mac, 3004 struct station_parameters *params) 3005 { 3006 struct ath6kl *ar = ath6kl_priv(dev); 3007 struct ath6kl_vif *vif = netdev_priv(dev); 3008 int err; 3009 3010 if (vif->nw_type != AP_NETWORK) 3011 return -EOPNOTSUPP; 3012 3013 err = cfg80211_check_station_change(wiphy, params, 3014 CFG80211_STA_AP_MLME_CLIENT); 3015 if (err) 3016 return err; 3017 3018 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 3019 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx, 3020 WMI_AP_MLME_AUTHORIZE, mac, 0); 3021 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx, 3022 WMI_AP_MLME_UNAUTHORIZE, mac, 0); 3023 } 3024 3025 static int ath6kl_remain_on_channel(struct wiphy *wiphy, 3026 struct wireless_dev *wdev, 3027 struct ieee80211_channel *chan, 3028 unsigned int duration, 3029 u64 *cookie) 3030 { 3031 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev); 3032 struct ath6kl *ar = ath6kl_priv(vif->ndev); 3033 u32 id; 3034 3035 /* TODO: if already pending or ongoing remain-on-channel, 3036 * return -EBUSY */ 3037 id = ++vif->last_roc_id; 3038 if (id == 0) { 3039 /* Do not use 0 as the cookie value */ 3040 id = ++vif->last_roc_id; 3041 } 3042 *cookie = id; 3043 3044 return ath6kl_wmi_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx, 3045 chan->center_freq, duration); 3046 } 3047 3048 static int ath6kl_cancel_remain_on_channel(struct wiphy *wiphy, 3049 struct wireless_dev *wdev, 3050 u64 cookie) 3051 { 3052 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev); 3053 struct ath6kl *ar = ath6kl_priv(vif->ndev); 3054 3055 if (cookie != vif->last_roc_id) 3056 return -ENOENT; 3057 vif->last_cancel_roc_id = cookie; 3058 3059 return ath6kl_wmi_cancel_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx); 3060 } 3061 3062 static int ath6kl_send_go_probe_resp(struct ath6kl_vif *vif, 3063 const u8 *buf, size_t len, 3064 unsigned int freq) 3065 { 3066 struct ath6kl *ar = vif->ar; 3067 const u8 *pos; 3068 u8 *p2p; 3069 int p2p_len; 3070 int ret; 3071 const struct ieee80211_mgmt *mgmt; 3072 3073 mgmt = (const struct ieee80211_mgmt *) buf; 3074 3075 /* Include P2P IE(s) from the frame generated in user space. */ 3076 3077 p2p = kmalloc(len, GFP_KERNEL); 3078 if (p2p == NULL) 3079 return -ENOMEM; 3080 p2p_len = 0; 3081 3082 pos = mgmt->u.probe_resp.variable; 3083 while (pos + 1 < buf + len) { 3084 if (pos + 2 + pos[1] > buf + len) 3085 break; 3086 if (ath6kl_is_p2p_ie(pos)) { 3087 memcpy(p2p + p2p_len, pos, 2 + pos[1]); 3088 p2p_len += 2 + pos[1]; 3089 } 3090 pos += 2 + pos[1]; 3091 } 3092 3093 ret = ath6kl_wmi_send_probe_response_cmd(ar->wmi, vif->fw_vif_idx, freq, 3094 mgmt->da, p2p, p2p_len); 3095 kfree(p2p); 3096 return ret; 3097 } 3098 3099 static bool ath6kl_mgmt_powersave_ap(struct ath6kl_vif *vif, 3100 u32 id, 3101 u32 freq, 3102 u32 wait, 3103 const u8 *buf, 3104 size_t len, 3105 bool *more_data, 3106 bool no_cck) 3107 { 3108 struct ieee80211_mgmt *mgmt; 3109 struct ath6kl_sta *conn; 3110 bool is_psq_empty = false; 3111 struct ath6kl_mgmt_buff *mgmt_buf; 3112 size_t mgmt_buf_size; 3113 struct ath6kl *ar = vif->ar; 3114 3115 mgmt = (struct ieee80211_mgmt *) buf; 3116 if (is_multicast_ether_addr(mgmt->da)) 3117 return false; 3118 3119 conn = ath6kl_find_sta(vif, mgmt->da); 3120 if (!conn) 3121 return false; 3122 3123 if (conn->sta_flags & STA_PS_SLEEP) { 3124 if (!(conn->sta_flags & STA_PS_POLLED)) { 3125 /* Queue the frames if the STA is sleeping */ 3126 mgmt_buf_size = len + sizeof(struct ath6kl_mgmt_buff); 3127 mgmt_buf = kmalloc(mgmt_buf_size, GFP_KERNEL); 3128 if (!mgmt_buf) 3129 return false; 3130 3131 INIT_LIST_HEAD(&mgmt_buf->list); 3132 mgmt_buf->id = id; 3133 mgmt_buf->freq = freq; 3134 mgmt_buf->wait = wait; 3135 mgmt_buf->len = len; 3136 mgmt_buf->no_cck = no_cck; 3137 memcpy(mgmt_buf->buf, buf, len); 3138 spin_lock_bh(&conn->psq_lock); 3139 is_psq_empty = skb_queue_empty(&conn->psq) && 3140 (conn->mgmt_psq_len == 0); 3141 list_add_tail(&mgmt_buf->list, &conn->mgmt_psq); 3142 conn->mgmt_psq_len++; 3143 spin_unlock_bh(&conn->psq_lock); 3144 3145 /* 3146 * If this is the first pkt getting queued 3147 * for this STA, update the PVB for this 3148 * STA. 3149 */ 3150 if (is_psq_empty) 3151 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, 3152 conn->aid, 1); 3153 return true; 3154 } 3155 3156 /* 3157 * This tx is because of a PsPoll. 3158 * Determine if MoreData bit has to be set. 3159 */ 3160 spin_lock_bh(&conn->psq_lock); 3161 if (!skb_queue_empty(&conn->psq) || (conn->mgmt_psq_len != 0)) 3162 *more_data = true; 3163 spin_unlock_bh(&conn->psq_lock); 3164 } 3165 3166 return false; 3167 } 3168 3169 /* Check if SSID length is greater than DIRECT- */ 3170 static bool ath6kl_is_p2p_go_ssid(const u8 *buf, size_t len) 3171 { 3172 const struct ieee80211_mgmt *mgmt; 3173 mgmt = (const struct ieee80211_mgmt *) buf; 3174 3175 /* variable[1] contains the SSID tag length */ 3176 if (buf + len >= &mgmt->u.probe_resp.variable[1] && 3177 (mgmt->u.probe_resp.variable[1] > P2P_WILDCARD_SSID_LEN)) { 3178 return true; 3179 } 3180 3181 return false; 3182 } 3183 3184 static int ath6kl_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 3185 struct cfg80211_mgmt_tx_params *params, u64 *cookie) 3186 { 3187 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev); 3188 struct ath6kl *ar = ath6kl_priv(vif->ndev); 3189 struct ieee80211_channel *chan = params->chan; 3190 const u8 *buf = params->buf; 3191 size_t len = params->len; 3192 unsigned int wait = params->wait; 3193 bool no_cck = params->no_cck; 3194 u32 id, freq; 3195 const struct ieee80211_mgmt *mgmt; 3196 bool more_data, queued; 3197 3198 /* default to the current channel, but use the one specified as argument 3199 * if any 3200 */ 3201 freq = vif->ch_hint; 3202 if (chan) 3203 freq = chan->center_freq; 3204 3205 /* never send freq zero to the firmware */ 3206 if (WARN_ON(freq == 0)) 3207 return -EINVAL; 3208 3209 mgmt = (const struct ieee80211_mgmt *) buf; 3210 if (vif->nw_type == AP_NETWORK && test_bit(CONNECTED, &vif->flags) && 3211 ieee80211_is_probe_resp(mgmt->frame_control) && 3212 ath6kl_is_p2p_go_ssid(buf, len)) { 3213 /* 3214 * Send Probe Response frame in GO mode using a separate WMI 3215 * command to allow the target to fill in the generic IEs. 3216 */ 3217 *cookie = 0; /* TX status not supported */ 3218 return ath6kl_send_go_probe_resp(vif, buf, len, freq); 3219 } 3220 3221 id = vif->send_action_id++; 3222 if (id == 0) { 3223 /* 3224 * 0 is a reserved value in the WMI command and shall not be 3225 * used for the command. 3226 */ 3227 id = vif->send_action_id++; 3228 } 3229 3230 *cookie = id; 3231 3232 /* AP mode Power saving processing */ 3233 if (vif->nw_type == AP_NETWORK) { 3234 queued = ath6kl_mgmt_powersave_ap(vif, id, freq, wait, buf, len, 3235 &more_data, no_cck); 3236 if (queued) 3237 return 0; 3238 } 3239 3240 return ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, id, freq, 3241 wait, buf, len, no_cck); 3242 } 3243 3244 static int ath6kl_get_antenna(struct wiphy *wiphy, 3245 u32 *tx_ant, u32 *rx_ant) 3246 { 3247 struct ath6kl *ar = wiphy_priv(wiphy); 3248 *tx_ant = ar->hw.tx_ant; 3249 *rx_ant = ar->hw.rx_ant; 3250 return 0; 3251 } 3252 3253 static void ath6kl_update_mgmt_frame_registrations(struct wiphy *wiphy, 3254 struct wireless_dev *wdev, 3255 struct mgmt_frame_regs *upd) 3256 { 3257 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev); 3258 3259 /* 3260 * FIXME: send WMI_PROBE_REQ_REPORT_CMD here instead of hardcoding 3261 * the reporting in the target all the time, this callback 3262 * *is* allowed to sleep after all. 3263 */ 3264 vif->probe_req_report = 3265 upd->interface_stypes & BIT(IEEE80211_STYPE_PROBE_REQ >> 4); 3266 } 3267 3268 static int ath6kl_cfg80211_sscan_start(struct wiphy *wiphy, 3269 struct net_device *dev, 3270 struct cfg80211_sched_scan_request *request) 3271 { 3272 struct ath6kl *ar = ath6kl_priv(dev); 3273 struct ath6kl_vif *vif = netdev_priv(dev); 3274 u16 interval; 3275 int ret, rssi_thold; 3276 int n_match_sets = request->n_match_sets; 3277 3278 /* 3279 * If there's a matchset w/o an SSID, then assume it's just for 3280 * the RSSI (nothing else is currently supported) and ignore it. 3281 * The device only supports a global RSSI filter that we set below. 3282 */ 3283 if (n_match_sets == 1 && !request->match_sets[0].ssid.ssid_len) 3284 n_match_sets = 0; 3285 3286 if (ar->state != ATH6KL_STATE_ON) 3287 return -EIO; 3288 3289 if (vif->sme_state != SME_DISCONNECTED) 3290 return -EBUSY; 3291 3292 ath6kl_cfg80211_scan_complete_event(vif, true); 3293 3294 ret = ath6kl_set_probed_ssids(ar, vif, request->ssids, 3295 request->n_ssids, 3296 request->match_sets, 3297 n_match_sets); 3298 if (ret < 0) 3299 return ret; 3300 3301 if (!n_match_sets) { 3302 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 3303 ALL_BSS_FILTER, 0); 3304 if (ret < 0) 3305 return ret; 3306 } else { 3307 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 3308 MATCHED_SSID_FILTER, 0); 3309 if (ret < 0) 3310 return ret; 3311 } 3312 3313 if (test_bit(ATH6KL_FW_CAPABILITY_RSSI_SCAN_THOLD, 3314 ar->fw_capabilities)) { 3315 if (request->min_rssi_thold <= NL80211_SCAN_RSSI_THOLD_OFF) 3316 rssi_thold = 0; 3317 else if (request->min_rssi_thold < -127) 3318 rssi_thold = -127; 3319 else 3320 rssi_thold = request->min_rssi_thold; 3321 3322 ret = ath6kl_wmi_set_rssi_filter_cmd(ar->wmi, vif->fw_vif_idx, 3323 rssi_thold); 3324 if (ret) { 3325 ath6kl_err("failed to set RSSI threshold for scan\n"); 3326 return ret; 3327 } 3328 } 3329 3330 /* fw uses seconds, also make sure that it's >0 */ 3331 interval = max_t(u16, 1, request->scan_plans[0].interval); 3332 3333 ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 3334 interval, interval, 3335 vif->bg_scan_period, 0, 0, 0, 3, 0, 0, 0); 3336 3337 /* this also clears IE in fw if it's not set */ 3338 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx, 3339 WMI_FRAME_PROBE_REQ, 3340 request->ie, request->ie_len); 3341 if (ret) { 3342 ath6kl_warn("Failed to set probe request IE for scheduled scan: %d\n", 3343 ret); 3344 return ret; 3345 } 3346 3347 ret = ath6kl_wmi_enable_sched_scan_cmd(ar->wmi, vif->fw_vif_idx, true); 3348 if (ret) 3349 return ret; 3350 3351 set_bit(SCHED_SCANNING, &vif->flags); 3352 3353 return 0; 3354 } 3355 3356 static int ath6kl_cfg80211_sscan_stop(struct wiphy *wiphy, 3357 struct net_device *dev, u64 reqid) 3358 { 3359 struct ath6kl_vif *vif = netdev_priv(dev); 3360 bool stopped; 3361 3362 stopped = __ath6kl_cfg80211_sscan_stop(vif); 3363 3364 if (!stopped) 3365 return -EIO; 3366 3367 return 0; 3368 } 3369 3370 static int ath6kl_cfg80211_set_bitrate(struct wiphy *wiphy, 3371 struct net_device *dev, 3372 unsigned int link_id, 3373 const u8 *addr, 3374 const struct cfg80211_bitrate_mask *mask) 3375 { 3376 struct ath6kl *ar = ath6kl_priv(dev); 3377 struct ath6kl_vif *vif = netdev_priv(dev); 3378 3379 return ath6kl_wmi_set_bitrate_mask(ar->wmi, vif->fw_vif_idx, 3380 mask); 3381 } 3382 3383 static int ath6kl_cfg80211_set_txe_config(struct wiphy *wiphy, 3384 struct net_device *dev, 3385 u32 rate, u32 pkts, u32 intvl) 3386 { 3387 struct ath6kl *ar = ath6kl_priv(dev); 3388 struct ath6kl_vif *vif = netdev_priv(dev); 3389 3390 if (vif->nw_type != INFRA_NETWORK || 3391 !test_bit(ATH6KL_FW_CAPABILITY_TX_ERR_NOTIFY, ar->fw_capabilities)) 3392 return -EOPNOTSUPP; 3393 3394 if (vif->sme_state != SME_CONNECTED) 3395 return -ENOTCONN; 3396 3397 /* save this since the firmware won't report the interval */ 3398 vif->txe_intvl = intvl; 3399 3400 return ath6kl_wmi_set_txe_notify(ar->wmi, vif->fw_vif_idx, 3401 rate, pkts, intvl); 3402 } 3403 3404 static const struct ieee80211_txrx_stypes 3405 ath6kl_mgmt_stypes[NUM_NL80211_IFTYPES] = { 3406 [NL80211_IFTYPE_STATION] = { 3407 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) | 3408 BIT(IEEE80211_STYPE_PROBE_RESP >> 4), 3409 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 3410 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) 3411 }, 3412 [NL80211_IFTYPE_AP] = { 3413 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) | 3414 BIT(IEEE80211_STYPE_PROBE_RESP >> 4), 3415 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 3416 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) 3417 }, 3418 [NL80211_IFTYPE_P2P_CLIENT] = { 3419 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) | 3420 BIT(IEEE80211_STYPE_PROBE_RESP >> 4), 3421 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 3422 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) 3423 }, 3424 [NL80211_IFTYPE_P2P_GO] = { 3425 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) | 3426 BIT(IEEE80211_STYPE_PROBE_RESP >> 4), 3427 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 3428 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) 3429 }, 3430 }; 3431 3432 static struct cfg80211_ops ath6kl_cfg80211_ops = { 3433 .add_virtual_intf = ath6kl_cfg80211_add_iface, 3434 .del_virtual_intf = ath6kl_cfg80211_del_iface, 3435 .change_virtual_intf = ath6kl_cfg80211_change_iface, 3436 .scan = ath6kl_cfg80211_scan, 3437 .connect = ath6kl_cfg80211_connect, 3438 .disconnect = ath6kl_cfg80211_disconnect, 3439 .add_key = ath6kl_cfg80211_add_key, 3440 .get_key = ath6kl_cfg80211_get_key, 3441 .del_key = ath6kl_cfg80211_del_key, 3442 .set_default_key = ath6kl_cfg80211_set_default_key, 3443 .set_wiphy_params = ath6kl_cfg80211_set_wiphy_params, 3444 .set_tx_power = ath6kl_cfg80211_set_txpower, 3445 .get_tx_power = ath6kl_cfg80211_get_txpower, 3446 .set_power_mgmt = ath6kl_cfg80211_set_power_mgmt, 3447 .join_ibss = ath6kl_cfg80211_join_ibss, 3448 .leave_ibss = ath6kl_cfg80211_leave_ibss, 3449 .get_station = ath6kl_get_station, 3450 .set_pmksa = ath6kl_set_pmksa, 3451 .del_pmksa = ath6kl_del_pmksa, 3452 .flush_pmksa = ath6kl_flush_pmksa, 3453 CFG80211_TESTMODE_CMD(ath6kl_tm_cmd) 3454 #ifdef CONFIG_PM 3455 .suspend = __ath6kl_cfg80211_suspend, 3456 .resume = __ath6kl_cfg80211_resume, 3457 #endif 3458 .start_ap = ath6kl_start_ap, 3459 .change_beacon = ath6kl_change_beacon, 3460 .stop_ap = ath6kl_stop_ap, 3461 .del_station = ath6kl_del_station, 3462 .change_station = ath6kl_change_station, 3463 .remain_on_channel = ath6kl_remain_on_channel, 3464 .cancel_remain_on_channel = ath6kl_cancel_remain_on_channel, 3465 .mgmt_tx = ath6kl_mgmt_tx, 3466 .update_mgmt_frame_registrations = 3467 ath6kl_update_mgmt_frame_registrations, 3468 .get_antenna = ath6kl_get_antenna, 3469 .sched_scan_start = ath6kl_cfg80211_sscan_start, 3470 .sched_scan_stop = ath6kl_cfg80211_sscan_stop, 3471 .set_bitrate_mask = ath6kl_cfg80211_set_bitrate, 3472 .set_cqm_txe_config = ath6kl_cfg80211_set_txe_config, 3473 }; 3474 3475 void ath6kl_cfg80211_stop(struct ath6kl_vif *vif) 3476 { 3477 ath6kl_cfg80211_sscan_disable(vif); 3478 3479 switch (vif->sme_state) { 3480 case SME_DISCONNECTED: 3481 break; 3482 case SME_CONNECTING: 3483 cfg80211_connect_result(vif->ndev, vif->bssid, NULL, 0, 3484 NULL, 0, 3485 WLAN_STATUS_UNSPECIFIED_FAILURE, 3486 GFP_KERNEL); 3487 break; 3488 case SME_CONNECTED: 3489 cfg80211_disconnected(vif->ndev, 0, NULL, 0, true, GFP_KERNEL); 3490 break; 3491 } 3492 3493 if (vif->ar->state != ATH6KL_STATE_RECOVERY && 3494 (test_bit(CONNECTED, &vif->flags) || 3495 test_bit(CONNECT_PEND, &vif->flags))) 3496 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx); 3497 3498 vif->sme_state = SME_DISCONNECTED; 3499 clear_bit(CONNECTED, &vif->flags); 3500 clear_bit(CONNECT_PEND, &vif->flags); 3501 3502 /* Stop netdev queues, needed during recovery */ 3503 netif_stop_queue(vif->ndev); 3504 netif_carrier_off(vif->ndev); 3505 3506 /* disable scanning */ 3507 if (vif->ar->state != ATH6KL_STATE_RECOVERY && 3508 ath6kl_wmi_scanparams_cmd(vif->ar->wmi, vif->fw_vif_idx, 0xFFFF, 3509 0, 0, 0, 0, 0, 0, 0, 0, 0) != 0) 3510 ath6kl_warn("failed to disable scan during stop\n"); 3511 3512 ath6kl_cfg80211_scan_complete_event(vif, true); 3513 } 3514 3515 void ath6kl_cfg80211_stop_all(struct ath6kl *ar) 3516 { 3517 struct ath6kl_vif *vif; 3518 3519 vif = ath6kl_vif_first(ar); 3520 if (!vif && ar->state != ATH6KL_STATE_RECOVERY) { 3521 /* save the current power mode before enabling power save */ 3522 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode; 3523 3524 if (ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER) != 0) 3525 ath6kl_warn("ath6kl_deep_sleep_enable: wmi_powermode_cmd failed\n"); 3526 return; 3527 } 3528 3529 /* 3530 * FIXME: we should take ar->list_lock to protect changes in the 3531 * vif_list, but that's not trivial to do as ath6kl_cfg80211_stop() 3532 * sleeps. 3533 */ 3534 list_for_each_entry(vif, &ar->vif_list, list) 3535 ath6kl_cfg80211_stop(vif); 3536 } 3537 3538 static void ath6kl_cfg80211_reg_notify(struct wiphy *wiphy, 3539 struct regulatory_request *request) 3540 { 3541 struct ath6kl *ar = wiphy_priv(wiphy); 3542 u32 rates[NUM_NL80211_BANDS]; 3543 int ret, i; 3544 3545 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 3546 "cfg reg_notify %c%c%s%s initiator %d hint_type %d\n", 3547 request->alpha2[0], request->alpha2[1], 3548 request->intersect ? " intersect" : "", 3549 request->processed ? " processed" : "", 3550 request->initiator, request->user_reg_hint_type); 3551 3552 if (request->user_reg_hint_type != NL80211_USER_REG_HINT_CELL_BASE) 3553 return; 3554 3555 ret = ath6kl_wmi_set_regdomain_cmd(ar->wmi, request->alpha2); 3556 if (ret) { 3557 ath6kl_err("failed to set regdomain: %d\n", ret); 3558 return; 3559 } 3560 3561 /* 3562 * Firmware will apply the regdomain change only after a scan is 3563 * issued and it will send a WMI_REGDOMAIN_EVENTID when it has been 3564 * changed. 3565 */ 3566 3567 for (i = 0; i < NUM_NL80211_BANDS; i++) 3568 if (wiphy->bands[i]) 3569 rates[i] = (1 << wiphy->bands[i]->n_bitrates) - 1; 3570 3571 3572 ret = ath6kl_wmi_beginscan_cmd(ar->wmi, 0, WMI_LONG_SCAN, false, 3573 false, 0, ATH6KL_FG_SCAN_INTERVAL, 3574 0, NULL, false, rates); 3575 if (ret) { 3576 ath6kl_err("failed to start scan for a regdomain change: %d\n", 3577 ret); 3578 return; 3579 } 3580 } 3581 3582 static int ath6kl_cfg80211_vif_init(struct ath6kl_vif *vif) 3583 { 3584 vif->aggr_cntxt = aggr_init(vif); 3585 if (!vif->aggr_cntxt) { 3586 ath6kl_err("failed to initialize aggr\n"); 3587 return -ENOMEM; 3588 } 3589 3590 timer_setup(&vif->disconnect_timer, disconnect_timer_handler, 0); 3591 timer_setup(&vif->sched_scan_timer, ath6kl_wmi_sscan_timer, 0); 3592 3593 set_bit(WMM_ENABLED, &vif->flags); 3594 spin_lock_init(&vif->if_lock); 3595 3596 INIT_LIST_HEAD(&vif->mc_filter); 3597 3598 return 0; 3599 } 3600 3601 void ath6kl_cfg80211_vif_stop(struct ath6kl_vif *vif, bool wmi_ready) 3602 { 3603 static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 3604 bool discon_issued; 3605 3606 netif_stop_queue(vif->ndev); 3607 3608 clear_bit(WLAN_ENABLED, &vif->flags); 3609 3610 if (wmi_ready) { 3611 discon_issued = test_bit(CONNECTED, &vif->flags) || 3612 test_bit(CONNECT_PEND, &vif->flags); 3613 ath6kl_disconnect(vif); 3614 del_timer(&vif->disconnect_timer); 3615 3616 if (discon_issued) 3617 ath6kl_disconnect_event(vif, DISCONNECT_CMD, 3618 (vif->nw_type & AP_NETWORK) ? 3619 bcast_mac : vif->bssid, 3620 0, NULL, 0); 3621 } 3622 3623 if (vif->scan_req) { 3624 struct cfg80211_scan_info info = { 3625 .aborted = true, 3626 }; 3627 3628 cfg80211_scan_done(vif->scan_req, &info); 3629 vif->scan_req = NULL; 3630 } 3631 3632 /* need to clean up enhanced bmiss detection fw state */ 3633 ath6kl_cfg80211_sta_bmiss_enhance(vif, false); 3634 } 3635 3636 void ath6kl_cfg80211_vif_cleanup(struct ath6kl_vif *vif) 3637 { 3638 struct ath6kl *ar = vif->ar; 3639 struct ath6kl_mc_filter *mc_filter, *tmp; 3640 3641 aggr_module_destroy(vif->aggr_cntxt); 3642 3643 ar->avail_idx_map |= BIT(vif->fw_vif_idx); 3644 3645 if (vif->nw_type == ADHOC_NETWORK) 3646 ar->ibss_if_active = false; 3647 3648 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) { 3649 list_del(&mc_filter->list); 3650 kfree(mc_filter); 3651 } 3652 3653 cfg80211_unregister_netdevice(vif->ndev); 3654 3655 ar->num_vif--; 3656 } 3657 3658 static const char ath6kl_gstrings_sta_stats[][ETH_GSTRING_LEN] = { 3659 /* Common stats names used by many drivers. */ 3660 "tx_pkts_nic", "tx_bytes_nic", "rx_pkts_nic", "rx_bytes_nic", 3661 3662 /* TX stats. */ 3663 "d_tx_ucast_pkts", "d_tx_bcast_pkts", 3664 "d_tx_ucast_bytes", "d_tx_bcast_bytes", 3665 "d_tx_rts_ok", "d_tx_error", "d_tx_fail", 3666 "d_tx_retry", "d_tx_multi_retry", "d_tx_rts_fail", 3667 "d_tx_tkip_counter_measures", 3668 3669 /* RX Stats. */ 3670 "d_rx_ucast_pkts", "d_rx_ucast_rate", "d_rx_bcast_pkts", 3671 "d_rx_ucast_bytes", "d_rx_bcast_bytes", "d_rx_frag_pkt", 3672 "d_rx_error", "d_rx_crc_err", "d_rx_keycache_miss", 3673 "d_rx_decrypt_crc_err", "d_rx_duplicate_frames", 3674 "d_rx_mic_err", "d_rx_tkip_format_err", "d_rx_ccmp_format_err", 3675 "d_rx_ccmp_replay_err", 3676 3677 /* Misc stats. */ 3678 "d_beacon_miss", "d_num_connects", "d_num_disconnects", 3679 "d_beacon_avg_rssi", "d_arp_received", "d_arp_matched", 3680 "d_arp_replied" 3681 }; 3682 3683 #define ATH6KL_STATS_LEN ARRAY_SIZE(ath6kl_gstrings_sta_stats) 3684 3685 static int ath6kl_get_sset_count(struct net_device *dev, int sset) 3686 { 3687 int rv = 0; 3688 3689 if (sset == ETH_SS_STATS) 3690 rv += ATH6KL_STATS_LEN; 3691 3692 if (rv == 0) 3693 return -EOPNOTSUPP; 3694 return rv; 3695 } 3696 3697 static void ath6kl_get_stats(struct net_device *dev, 3698 struct ethtool_stats *stats, 3699 u64 *data) 3700 { 3701 struct ath6kl_vif *vif = netdev_priv(dev); 3702 struct ath6kl *ar = vif->ar; 3703 int i = 0; 3704 struct target_stats *tgt_stats; 3705 3706 memset(data, 0, sizeof(u64) * ATH6KL_STATS_LEN); 3707 3708 ath6kl_read_tgt_stats(ar, vif); 3709 3710 tgt_stats = &vif->target_stats; 3711 3712 data[i++] = tgt_stats->tx_ucast_pkt + tgt_stats->tx_bcast_pkt; 3713 data[i++] = tgt_stats->tx_ucast_byte + tgt_stats->tx_bcast_byte; 3714 data[i++] = tgt_stats->rx_ucast_pkt + tgt_stats->rx_bcast_pkt; 3715 data[i++] = tgt_stats->rx_ucast_byte + tgt_stats->rx_bcast_byte; 3716 3717 data[i++] = tgt_stats->tx_ucast_pkt; 3718 data[i++] = tgt_stats->tx_bcast_pkt; 3719 data[i++] = tgt_stats->tx_ucast_byte; 3720 data[i++] = tgt_stats->tx_bcast_byte; 3721 data[i++] = tgt_stats->tx_rts_success_cnt; 3722 data[i++] = tgt_stats->tx_err; 3723 data[i++] = tgt_stats->tx_fail_cnt; 3724 data[i++] = tgt_stats->tx_retry_cnt; 3725 data[i++] = tgt_stats->tx_mult_retry_cnt; 3726 data[i++] = tgt_stats->tx_rts_fail_cnt; 3727 data[i++] = tgt_stats->tkip_cnter_measures_invoked; 3728 3729 data[i++] = tgt_stats->rx_ucast_pkt; 3730 data[i++] = tgt_stats->rx_ucast_rate; 3731 data[i++] = tgt_stats->rx_bcast_pkt; 3732 data[i++] = tgt_stats->rx_ucast_byte; 3733 data[i++] = tgt_stats->rx_bcast_byte; 3734 data[i++] = tgt_stats->rx_frgment_pkt; 3735 data[i++] = tgt_stats->rx_err; 3736 data[i++] = tgt_stats->rx_crc_err; 3737 data[i++] = tgt_stats->rx_key_cache_miss; 3738 data[i++] = tgt_stats->rx_decrypt_err; 3739 data[i++] = tgt_stats->rx_dupl_frame; 3740 data[i++] = tgt_stats->tkip_local_mic_fail; 3741 data[i++] = tgt_stats->tkip_fmt_err; 3742 data[i++] = tgt_stats->ccmp_fmt_err; 3743 data[i++] = tgt_stats->ccmp_replays; 3744 3745 data[i++] = tgt_stats->cs_bmiss_cnt; 3746 data[i++] = tgt_stats->cs_connect_cnt; 3747 data[i++] = tgt_stats->cs_discon_cnt; 3748 data[i++] = tgt_stats->cs_ave_beacon_rssi; 3749 data[i++] = tgt_stats->arp_received; 3750 data[i++] = tgt_stats->arp_matched; 3751 data[i++] = tgt_stats->arp_replied; 3752 3753 if (i != ATH6KL_STATS_LEN) { 3754 WARN_ON_ONCE(1); 3755 ath6kl_err("ethtool stats error, i: %d STATS_LEN: %d\n", 3756 i, (int)ATH6KL_STATS_LEN); 3757 } 3758 } 3759 3760 /* These stats are per NIC, not really per vdev, so we just ignore dev. */ 3761 static void ath6kl_get_strings(struct net_device *dev, u32 sset, u8 *data) 3762 { 3763 int sz_sta_stats = 0; 3764 3765 if (sset == ETH_SS_STATS) { 3766 sz_sta_stats = sizeof(ath6kl_gstrings_sta_stats); 3767 memcpy(data, ath6kl_gstrings_sta_stats, sz_sta_stats); 3768 } 3769 } 3770 3771 static const struct ethtool_ops ath6kl_ethtool_ops = { 3772 .get_drvinfo = cfg80211_get_drvinfo, 3773 .get_link = ethtool_op_get_link, 3774 .get_strings = ath6kl_get_strings, 3775 .get_ethtool_stats = ath6kl_get_stats, 3776 .get_sset_count = ath6kl_get_sset_count, 3777 }; 3778 3779 struct wireless_dev *ath6kl_interface_add(struct ath6kl *ar, const char *name, 3780 unsigned char name_assign_type, 3781 enum nl80211_iftype type, 3782 u8 fw_vif_idx, u8 nw_type) 3783 { 3784 struct net_device *ndev; 3785 struct ath6kl_vif *vif; 3786 u8 addr[ETH_ALEN]; 3787 3788 ndev = alloc_netdev(sizeof(*vif), name, name_assign_type, ether_setup); 3789 if (!ndev) 3790 return NULL; 3791 3792 vif = netdev_priv(ndev); 3793 ndev->ieee80211_ptr = &vif->wdev; 3794 vif->wdev.wiphy = ar->wiphy; 3795 vif->ar = ar; 3796 vif->ndev = ndev; 3797 SET_NETDEV_DEV(ndev, wiphy_dev(vif->wdev.wiphy)); 3798 vif->wdev.netdev = ndev; 3799 vif->wdev.iftype = type; 3800 vif->fw_vif_idx = fw_vif_idx; 3801 vif->nw_type = nw_type; 3802 vif->next_mode = nw_type; 3803 vif->listen_intvl_t = ATH6KL_DEFAULT_LISTEN_INTVAL; 3804 vif->bmiss_time_t = ATH6KL_DEFAULT_BMISS_TIME; 3805 vif->bg_scan_period = 0; 3806 vif->htcap[NL80211_BAND_2GHZ].ht_enable = true; 3807 vif->htcap[NL80211_BAND_5GHZ].ht_enable = true; 3808 3809 ether_addr_copy(addr, ar->mac_addr); 3810 if (fw_vif_idx != 0) { 3811 addr[0] = (addr[0] ^ (1 << fw_vif_idx)) | 0x2; 3812 if (test_bit(ATH6KL_FW_CAPABILITY_CUSTOM_MAC_ADDR, 3813 ar->fw_capabilities)) 3814 addr[4] ^= 0x80; 3815 } 3816 eth_hw_addr_set(ndev, addr); 3817 3818 init_netdev(ndev); 3819 3820 ath6kl_init_control_info(vif); 3821 3822 if (ath6kl_cfg80211_vif_init(vif)) 3823 goto err; 3824 3825 netdev_set_default_ethtool_ops(ndev, &ath6kl_ethtool_ops); 3826 3827 if (cfg80211_register_netdevice(ndev)) 3828 goto err; 3829 3830 ar->avail_idx_map &= ~BIT(fw_vif_idx); 3831 vif->sme_state = SME_DISCONNECTED; 3832 set_bit(WLAN_ENABLED, &vif->flags); 3833 ar->wlan_pwr_state = WLAN_POWER_STATE_ON; 3834 3835 if (type == NL80211_IFTYPE_ADHOC) 3836 ar->ibss_if_active = true; 3837 3838 spin_lock_bh(&ar->list_lock); 3839 list_add_tail(&vif->list, &ar->vif_list); 3840 spin_unlock_bh(&ar->list_lock); 3841 3842 return &vif->wdev; 3843 3844 err: 3845 aggr_module_destroy(vif->aggr_cntxt); 3846 free_netdev(ndev); 3847 return NULL; 3848 } 3849 3850 #ifdef CONFIG_PM 3851 static const struct wiphy_wowlan_support ath6kl_wowlan_support = { 3852 .flags = WIPHY_WOWLAN_MAGIC_PKT | 3853 WIPHY_WOWLAN_DISCONNECT | 3854 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 3855 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 3856 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 3857 WIPHY_WOWLAN_4WAY_HANDSHAKE, 3858 .n_patterns = WOW_MAX_FILTERS_PER_LIST, 3859 .pattern_min_len = 1, 3860 .pattern_max_len = WOW_PATTERN_SIZE, 3861 }; 3862 #endif 3863 3864 int ath6kl_cfg80211_init(struct ath6kl *ar) 3865 { 3866 struct wiphy *wiphy = ar->wiphy; 3867 bool band_2gig = false, band_5gig = false, ht = false; 3868 int ret; 3869 3870 wiphy->mgmt_stypes = ath6kl_mgmt_stypes; 3871 3872 wiphy->max_remain_on_channel_duration = 5000; 3873 3874 /* set device pointer for wiphy */ 3875 set_wiphy_dev(wiphy, ar->dev); 3876 3877 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 3878 BIT(NL80211_IFTYPE_ADHOC) | 3879 BIT(NL80211_IFTYPE_AP); 3880 if (ar->p2p) { 3881 wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_GO) | 3882 BIT(NL80211_IFTYPE_P2P_CLIENT); 3883 } 3884 3885 if (IS_ENABLED(CONFIG_ATH6KL_REGDOMAIN) && 3886 test_bit(ATH6KL_FW_CAPABILITY_REGDOMAIN, ar->fw_capabilities)) { 3887 wiphy->reg_notifier = ath6kl_cfg80211_reg_notify; 3888 ar->wiphy->features |= NL80211_FEATURE_CELL_BASE_REG_HINTS; 3889 } 3890 3891 /* max num of ssids that can be probed during scanning */ 3892 wiphy->max_scan_ssids = MAX_PROBED_SSIDS; 3893 3894 /* max num of ssids that can be matched after scan */ 3895 if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_MATCH_LIST, 3896 ar->fw_capabilities)) 3897 wiphy->max_match_sets = MAX_PROBED_SSIDS; 3898 3899 wiphy->max_scan_ie_len = 1000; /* FIX: what is correct limit? */ 3900 switch (ar->hw.cap) { 3901 case WMI_11AN_CAP: 3902 ht = true; 3903 fallthrough; 3904 case WMI_11A_CAP: 3905 band_5gig = true; 3906 break; 3907 case WMI_11GN_CAP: 3908 ht = true; 3909 fallthrough; 3910 case WMI_11G_CAP: 3911 band_2gig = true; 3912 break; 3913 case WMI_11AGN_CAP: 3914 ht = true; 3915 fallthrough; 3916 case WMI_11AG_CAP: 3917 band_2gig = true; 3918 band_5gig = true; 3919 break; 3920 default: 3921 ath6kl_err("invalid phy capability!\n"); 3922 return -EINVAL; 3923 } 3924 3925 /* 3926 * Even if the fw has HT support, advertise HT cap only when 3927 * the firmware has support to override RSN capability, otherwise 3928 * 4-way handshake would fail. 3929 */ 3930 if (!(ht && 3931 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE, 3932 ar->fw_capabilities))) { 3933 ath6kl_band_2ghz.ht_cap.cap = 0; 3934 ath6kl_band_2ghz.ht_cap.ht_supported = false; 3935 ath6kl_band_5ghz.ht_cap.cap = 0; 3936 ath6kl_band_5ghz.ht_cap.ht_supported = false; 3937 3938 if (ht) 3939 ath6kl_err("Firmware lacks RSN-CAP-OVERRIDE, so HT (802.11n) is disabled."); 3940 } 3941 3942 if (test_bit(ATH6KL_FW_CAPABILITY_64BIT_RATES, 3943 ar->fw_capabilities)) { 3944 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff; 3945 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff; 3946 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[1] = 0xff; 3947 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[1] = 0xff; 3948 ar->hw.tx_ant = 0x3; /* mask, 2 antenna */ 3949 ar->hw.rx_ant = 0x3; 3950 } else { 3951 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff; 3952 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff; 3953 ar->hw.tx_ant = 1; 3954 ar->hw.rx_ant = 1; 3955 } 3956 3957 wiphy->available_antennas_tx = ar->hw.tx_ant; 3958 wiphy->available_antennas_rx = ar->hw.rx_ant; 3959 3960 if (band_2gig) 3961 wiphy->bands[NL80211_BAND_2GHZ] = &ath6kl_band_2ghz; 3962 if (band_5gig) 3963 wiphy->bands[NL80211_BAND_5GHZ] = &ath6kl_band_5ghz; 3964 3965 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; 3966 3967 wiphy->cipher_suites = cipher_suites; 3968 wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); 3969 3970 #ifdef CONFIG_PM 3971 wiphy->wowlan = &ath6kl_wowlan_support; 3972 #endif 3973 3974 wiphy->max_sched_scan_ssids = MAX_PROBED_SSIDS; 3975 3976 ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM | 3977 WIPHY_FLAG_HAVE_AP_SME | 3978 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL | 3979 WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD; 3980 3981 if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_V2, ar->fw_capabilities)) 3982 ar->wiphy->max_sched_scan_reqs = 1; 3983 3984 if (test_bit(ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT, 3985 ar->fw_capabilities)) 3986 ar->wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER; 3987 3988 ar->wiphy->probe_resp_offload = 3989 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS | 3990 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 | 3991 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P; 3992 3993 ret = wiphy_register(wiphy); 3994 if (ret < 0) { 3995 ath6kl_err("couldn't register wiphy device\n"); 3996 return ret; 3997 } 3998 3999 ar->wiphy_registered = true; 4000 4001 return 0; 4002 } 4003 4004 void ath6kl_cfg80211_cleanup(struct ath6kl *ar) 4005 { 4006 wiphy_unregister(ar->wiphy); 4007 4008 ar->wiphy_registered = false; 4009 } 4010 4011 struct ath6kl *ath6kl_cfg80211_create(void) 4012 { 4013 struct ath6kl *ar; 4014 struct wiphy *wiphy; 4015 4016 /* create a new wiphy for use with cfg80211 */ 4017 wiphy = wiphy_new(&ath6kl_cfg80211_ops, sizeof(struct ath6kl)); 4018 4019 if (!wiphy) { 4020 ath6kl_err("couldn't allocate wiphy device\n"); 4021 return NULL; 4022 } 4023 4024 ar = wiphy_priv(wiphy); 4025 ar->wiphy = wiphy; 4026 4027 return ar; 4028 } 4029 4030 /* Note: ar variable must not be accessed after calling this! */ 4031 void ath6kl_cfg80211_destroy(struct ath6kl *ar) 4032 { 4033 int i; 4034 4035 for (i = 0; i < AP_MAX_NUM_STA; i++) 4036 kfree(ar->sta_list[i].aggr_conn); 4037 4038 wiphy_free(ar->wiphy); 4039 } 4040 4041