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 24 #include "core.h" 25 #include "cfg80211.h" 26 #include "debug.h" 27 #include "hif-ops.h" 28 #include "testmode.h" 29 30 #define RATETAB_ENT(_rate, _rateid, _flags) { \ 31 .bitrate = (_rate), \ 32 .flags = (_flags), \ 33 .hw_value = (_rateid), \ 34 } 35 36 #define CHAN2G(_channel, _freq, _flags) { \ 37 .band = IEEE80211_BAND_2GHZ, \ 38 .hw_value = (_channel), \ 39 .center_freq = (_freq), \ 40 .flags = (_flags), \ 41 .max_antenna_gain = 0, \ 42 .max_power = 30, \ 43 } 44 45 #define CHAN5G(_channel, _flags) { \ 46 .band = IEEE80211_BAND_5GHZ, \ 47 .hw_value = (_channel), \ 48 .center_freq = 5000 + (5 * (_channel)), \ 49 .flags = (_flags), \ 50 .max_antenna_gain = 0, \ 51 .max_power = 30, \ 52 } 53 54 #define DEFAULT_BG_SCAN_PERIOD 60 55 56 struct ath6kl_cfg80211_match_probe_ssid { 57 struct cfg80211_ssid ssid; 58 u8 flag; 59 }; 60 61 static struct ieee80211_rate ath6kl_rates[] = { 62 RATETAB_ENT(10, 0x1, 0), 63 RATETAB_ENT(20, 0x2, 0), 64 RATETAB_ENT(55, 0x4, 0), 65 RATETAB_ENT(110, 0x8, 0), 66 RATETAB_ENT(60, 0x10, 0), 67 RATETAB_ENT(90, 0x20, 0), 68 RATETAB_ENT(120, 0x40, 0), 69 RATETAB_ENT(180, 0x80, 0), 70 RATETAB_ENT(240, 0x100, 0), 71 RATETAB_ENT(360, 0x200, 0), 72 RATETAB_ENT(480, 0x400, 0), 73 RATETAB_ENT(540, 0x800, 0), 74 }; 75 76 #define ath6kl_a_rates (ath6kl_rates + 4) 77 #define ath6kl_a_rates_size 8 78 #define ath6kl_g_rates (ath6kl_rates + 0) 79 #define ath6kl_g_rates_size 12 80 81 #define ath6kl_g_htcap IEEE80211_HT_CAP_SGI_20 82 #define ath6kl_a_htcap (IEEE80211_HT_CAP_SUP_WIDTH_20_40 | \ 83 IEEE80211_HT_CAP_SGI_20 | \ 84 IEEE80211_HT_CAP_SGI_40) 85 86 static struct ieee80211_channel ath6kl_2ghz_channels[] = { 87 CHAN2G(1, 2412, 0), 88 CHAN2G(2, 2417, 0), 89 CHAN2G(3, 2422, 0), 90 CHAN2G(4, 2427, 0), 91 CHAN2G(5, 2432, 0), 92 CHAN2G(6, 2437, 0), 93 CHAN2G(7, 2442, 0), 94 CHAN2G(8, 2447, 0), 95 CHAN2G(9, 2452, 0), 96 CHAN2G(10, 2457, 0), 97 CHAN2G(11, 2462, 0), 98 CHAN2G(12, 2467, 0), 99 CHAN2G(13, 2472, 0), 100 CHAN2G(14, 2484, 0), 101 }; 102 103 static struct ieee80211_channel ath6kl_5ghz_a_channels[] = { 104 CHAN5G(34, 0), CHAN5G(36, 0), 105 CHAN5G(38, 0), CHAN5G(40, 0), 106 CHAN5G(42, 0), CHAN5G(44, 0), 107 CHAN5G(46, 0), CHAN5G(48, 0), 108 CHAN5G(52, 0), CHAN5G(56, 0), 109 CHAN5G(60, 0), CHAN5G(64, 0), 110 CHAN5G(100, 0), CHAN5G(104, 0), 111 CHAN5G(108, 0), CHAN5G(112, 0), 112 CHAN5G(116, 0), CHAN5G(120, 0), 113 CHAN5G(124, 0), CHAN5G(128, 0), 114 CHAN5G(132, 0), CHAN5G(136, 0), 115 CHAN5G(140, 0), CHAN5G(149, 0), 116 CHAN5G(153, 0), CHAN5G(157, 0), 117 CHAN5G(161, 0), CHAN5G(165, 0), 118 CHAN5G(184, 0), CHAN5G(188, 0), 119 CHAN5G(192, 0), CHAN5G(196, 0), 120 CHAN5G(200, 0), CHAN5G(204, 0), 121 CHAN5G(208, 0), CHAN5G(212, 0), 122 CHAN5G(216, 0), 123 }; 124 125 static struct ieee80211_supported_band ath6kl_band_2ghz = { 126 .n_channels = ARRAY_SIZE(ath6kl_2ghz_channels), 127 .channels = ath6kl_2ghz_channels, 128 .n_bitrates = ath6kl_g_rates_size, 129 .bitrates = ath6kl_g_rates, 130 .ht_cap.cap = ath6kl_g_htcap, 131 .ht_cap.ht_supported = true, 132 }; 133 134 static struct ieee80211_supported_band ath6kl_band_5ghz = { 135 .n_channels = ARRAY_SIZE(ath6kl_5ghz_a_channels), 136 .channels = ath6kl_5ghz_a_channels, 137 .n_bitrates = ath6kl_a_rates_size, 138 .bitrates = ath6kl_a_rates, 139 .ht_cap.cap = ath6kl_a_htcap, 140 .ht_cap.ht_supported = true, 141 }; 142 143 #define CCKM_KRK_CIPHER_SUITE 0x004096ff /* use for KRK */ 144 145 /* returns true if scheduled scan was stopped */ 146 static bool __ath6kl_cfg80211_sscan_stop(struct ath6kl_vif *vif) 147 { 148 struct ath6kl *ar = vif->ar; 149 150 if (!test_and_clear_bit(SCHED_SCANNING, &vif->flags)) 151 return false; 152 153 del_timer_sync(&vif->sched_scan_timer); 154 155 if (ar->state == ATH6KL_STATE_RECOVERY) 156 return true; 157 158 ath6kl_wmi_enable_sched_scan_cmd(ar->wmi, vif->fw_vif_idx, false); 159 160 return true; 161 } 162 163 static void ath6kl_cfg80211_sscan_disable(struct ath6kl_vif *vif) 164 { 165 struct ath6kl *ar = vif->ar; 166 bool stopped; 167 168 stopped = __ath6kl_cfg80211_sscan_stop(vif); 169 170 if (!stopped) 171 return; 172 173 cfg80211_sched_scan_stopped(ar->wiphy); 174 } 175 176 static int ath6kl_set_wpa_version(struct ath6kl_vif *vif, 177 enum nl80211_wpa_versions wpa_version) 178 { 179 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: %u\n", __func__, wpa_version); 180 181 if (!wpa_version) { 182 vif->auth_mode = NONE_AUTH; 183 } else if (wpa_version & NL80211_WPA_VERSION_2) { 184 vif->auth_mode = WPA2_AUTH; 185 } else if (wpa_version & NL80211_WPA_VERSION_1) { 186 vif->auth_mode = WPA_AUTH; 187 } else { 188 ath6kl_err("%s: %u not supported\n", __func__, wpa_version); 189 return -ENOTSUPP; 190 } 191 192 return 0; 193 } 194 195 static int ath6kl_set_auth_type(struct ath6kl_vif *vif, 196 enum nl80211_auth_type auth_type) 197 { 198 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, auth_type); 199 200 switch (auth_type) { 201 case NL80211_AUTHTYPE_OPEN_SYSTEM: 202 vif->dot11_auth_mode = OPEN_AUTH; 203 break; 204 case NL80211_AUTHTYPE_SHARED_KEY: 205 vif->dot11_auth_mode = SHARED_AUTH; 206 break; 207 case NL80211_AUTHTYPE_NETWORK_EAP: 208 vif->dot11_auth_mode = LEAP_AUTH; 209 break; 210 211 case NL80211_AUTHTYPE_AUTOMATIC: 212 vif->dot11_auth_mode = OPEN_AUTH | SHARED_AUTH; 213 break; 214 215 default: 216 ath6kl_err("%s: 0x%x not supported\n", __func__, auth_type); 217 return -ENOTSUPP; 218 } 219 220 return 0; 221 } 222 223 static int ath6kl_set_cipher(struct ath6kl_vif *vif, u32 cipher, bool ucast) 224 { 225 u8 *ar_cipher = ucast ? &vif->prwise_crypto : &vif->grp_crypto; 226 u8 *ar_cipher_len = ucast ? &vif->prwise_crypto_len : 227 &vif->grp_crypto_len; 228 229 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: cipher 0x%x, ucast %u\n", 230 __func__, cipher, ucast); 231 232 switch (cipher) { 233 case 0: 234 /* our own hack to use value 0 as no crypto used */ 235 *ar_cipher = NONE_CRYPT; 236 *ar_cipher_len = 0; 237 break; 238 case WLAN_CIPHER_SUITE_WEP40: 239 *ar_cipher = WEP_CRYPT; 240 *ar_cipher_len = 5; 241 break; 242 case WLAN_CIPHER_SUITE_WEP104: 243 *ar_cipher = WEP_CRYPT; 244 *ar_cipher_len = 13; 245 break; 246 case WLAN_CIPHER_SUITE_TKIP: 247 *ar_cipher = TKIP_CRYPT; 248 *ar_cipher_len = 0; 249 break; 250 case WLAN_CIPHER_SUITE_CCMP: 251 *ar_cipher = AES_CRYPT; 252 *ar_cipher_len = 0; 253 break; 254 case WLAN_CIPHER_SUITE_SMS4: 255 *ar_cipher = WAPI_CRYPT; 256 *ar_cipher_len = 0; 257 break; 258 default: 259 ath6kl_err("cipher 0x%x not supported\n", cipher); 260 return -ENOTSUPP; 261 } 262 263 return 0; 264 } 265 266 static void ath6kl_set_key_mgmt(struct ath6kl_vif *vif, u32 key_mgmt) 267 { 268 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, key_mgmt); 269 270 if (key_mgmt == WLAN_AKM_SUITE_PSK) { 271 if (vif->auth_mode == WPA_AUTH) 272 vif->auth_mode = WPA_PSK_AUTH; 273 else if (vif->auth_mode == WPA2_AUTH) 274 vif->auth_mode = WPA2_PSK_AUTH; 275 } else if (key_mgmt == 0x00409600) { 276 if (vif->auth_mode == WPA_AUTH) 277 vif->auth_mode = WPA_AUTH_CCKM; 278 else if (vif->auth_mode == WPA2_AUTH) 279 vif->auth_mode = WPA2_AUTH_CCKM; 280 } else if (key_mgmt != WLAN_AKM_SUITE_8021X) { 281 vif->auth_mode = NONE_AUTH; 282 } 283 } 284 285 static bool ath6kl_cfg80211_ready(struct ath6kl_vif *vif) 286 { 287 struct ath6kl *ar = vif->ar; 288 289 if (!test_bit(WMI_READY, &ar->flag)) { 290 ath6kl_err("wmi is not ready\n"); 291 return false; 292 } 293 294 if (!test_bit(WLAN_ENABLED, &vif->flags)) { 295 ath6kl_err("wlan disabled\n"); 296 return false; 297 } 298 299 return true; 300 } 301 302 static bool ath6kl_is_wpa_ie(const u8 *pos) 303 { 304 return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 && 305 pos[2] == 0x00 && pos[3] == 0x50 && 306 pos[4] == 0xf2 && pos[5] == 0x01; 307 } 308 309 static bool ath6kl_is_rsn_ie(const u8 *pos) 310 { 311 return pos[0] == WLAN_EID_RSN; 312 } 313 314 static bool ath6kl_is_wps_ie(const u8 *pos) 315 { 316 return (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 317 pos[1] >= 4 && 318 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2 && 319 pos[5] == 0x04); 320 } 321 322 static int ath6kl_set_assoc_req_ies(struct ath6kl_vif *vif, const u8 *ies, 323 size_t ies_len) 324 { 325 struct ath6kl *ar = vif->ar; 326 const u8 *pos; 327 u8 *buf = NULL; 328 size_t len = 0; 329 int ret; 330 331 /* 332 * Clear previously set flag 333 */ 334 335 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG; 336 337 /* 338 * Filter out RSN/WPA IE(s) 339 */ 340 341 if (ies && ies_len) { 342 buf = kmalloc(ies_len, GFP_KERNEL); 343 if (buf == NULL) 344 return -ENOMEM; 345 pos = ies; 346 347 while (pos + 1 < ies + ies_len) { 348 if (pos + 2 + pos[1] > ies + ies_len) 349 break; 350 if (!(ath6kl_is_wpa_ie(pos) || ath6kl_is_rsn_ie(pos))) { 351 memcpy(buf + len, pos, 2 + pos[1]); 352 len += 2 + pos[1]; 353 } 354 355 if (ath6kl_is_wps_ie(pos)) 356 ar->connect_ctrl_flags |= CONNECT_WPS_FLAG; 357 358 pos += 2 + pos[1]; 359 } 360 } 361 362 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx, 363 WMI_FRAME_ASSOC_REQ, buf, len); 364 kfree(buf); 365 return ret; 366 } 367 368 static int ath6kl_nliftype_to_drv_iftype(enum nl80211_iftype type, u8 *nw_type) 369 { 370 switch (type) { 371 case NL80211_IFTYPE_STATION: 372 case NL80211_IFTYPE_P2P_CLIENT: 373 *nw_type = INFRA_NETWORK; 374 break; 375 case NL80211_IFTYPE_ADHOC: 376 *nw_type = ADHOC_NETWORK; 377 break; 378 case NL80211_IFTYPE_AP: 379 case NL80211_IFTYPE_P2P_GO: 380 *nw_type = AP_NETWORK; 381 break; 382 default: 383 ath6kl_err("invalid interface type %u\n", type); 384 return -ENOTSUPP; 385 } 386 387 return 0; 388 } 389 390 static bool ath6kl_is_valid_iftype(struct ath6kl *ar, enum nl80211_iftype type, 391 u8 *if_idx, u8 *nw_type) 392 { 393 int i; 394 395 if (ath6kl_nliftype_to_drv_iftype(type, nw_type)) 396 return false; 397 398 if (ar->ibss_if_active || ((type == NL80211_IFTYPE_ADHOC) && 399 ar->num_vif)) 400 return false; 401 402 if (type == NL80211_IFTYPE_STATION || 403 type == NL80211_IFTYPE_AP || type == NL80211_IFTYPE_ADHOC) { 404 for (i = 0; i < ar->vif_max; i++) { 405 if ((ar->avail_idx_map) & BIT(i)) { 406 *if_idx = i; 407 return true; 408 } 409 } 410 } 411 412 if (type == NL80211_IFTYPE_P2P_CLIENT || 413 type == NL80211_IFTYPE_P2P_GO) { 414 for (i = ar->max_norm_iface; i < ar->vif_max; i++) { 415 if ((ar->avail_idx_map) & BIT(i)) { 416 *if_idx = i; 417 return true; 418 } 419 } 420 } 421 422 return false; 423 } 424 425 static bool ath6kl_is_tx_pending(struct ath6kl *ar) 426 { 427 return ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)] == 0; 428 } 429 430 static void ath6kl_cfg80211_sta_bmiss_enhance(struct ath6kl_vif *vif, 431 bool enable) 432 { 433 int err; 434 435 if (WARN_ON(!test_bit(WMI_READY, &vif->ar->flag))) 436 return; 437 438 if (vif->nw_type != INFRA_NETWORK) 439 return; 440 441 if (!test_bit(ATH6KL_FW_CAPABILITY_BMISS_ENHANCE, 442 vif->ar->fw_capabilities)) 443 return; 444 445 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s fw bmiss enhance\n", 446 enable ? "enable" : "disable"); 447 448 err = ath6kl_wmi_sta_bmiss_enhance_cmd(vif->ar->wmi, 449 vif->fw_vif_idx, enable); 450 if (err) 451 ath6kl_err("failed to %s enhanced bmiss detection: %d\n", 452 enable ? "enable" : "disable", err); 453 } 454 455 static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev, 456 struct cfg80211_connect_params *sme) 457 { 458 struct ath6kl *ar = ath6kl_priv(dev); 459 struct ath6kl_vif *vif = netdev_priv(dev); 460 int status; 461 u8 nw_subtype = (ar->p2p) ? SUBTYPE_P2PDEV : SUBTYPE_NONE; 462 u16 interval; 463 464 ath6kl_cfg80211_sscan_disable(vif); 465 466 vif->sme_state = SME_CONNECTING; 467 468 if (!ath6kl_cfg80211_ready(vif)) 469 return -EIO; 470 471 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) { 472 ath6kl_err("destroy in progress\n"); 473 return -EBUSY; 474 } 475 476 if (test_bit(SKIP_SCAN, &ar->flag) && 477 ((sme->channel && sme->channel->center_freq == 0) || 478 (sme->bssid && is_zero_ether_addr(sme->bssid)))) { 479 ath6kl_err("SkipScan: channel or bssid invalid\n"); 480 return -EINVAL; 481 } 482 483 if (down_interruptible(&ar->sem)) { 484 ath6kl_err("busy, couldn't get access\n"); 485 return -ERESTARTSYS; 486 } 487 488 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) { 489 ath6kl_err("busy, destroy in progress\n"); 490 up(&ar->sem); 491 return -EBUSY; 492 } 493 494 if (ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)]) { 495 /* 496 * sleep until the command queue drains 497 */ 498 wait_event_interruptible_timeout(ar->event_wq, 499 ath6kl_is_tx_pending(ar), 500 WMI_TIMEOUT); 501 if (signal_pending(current)) { 502 ath6kl_err("cmd queue drain timeout\n"); 503 up(&ar->sem); 504 return -EINTR; 505 } 506 } 507 508 status = ath6kl_set_assoc_req_ies(vif, sme->ie, sme->ie_len); 509 if (status) { 510 up(&ar->sem); 511 return status; 512 } 513 514 if (sme->ie == NULL || sme->ie_len == 0) 515 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG; 516 517 if (test_bit(CONNECTED, &vif->flags) && 518 vif->ssid_len == sme->ssid_len && 519 !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) { 520 vif->reconnect_flag = true; 521 status = ath6kl_wmi_reconnect_cmd(ar->wmi, vif->fw_vif_idx, 522 vif->req_bssid, 523 vif->ch_hint); 524 525 up(&ar->sem); 526 if (status) { 527 ath6kl_err("wmi_reconnect_cmd failed\n"); 528 return -EIO; 529 } 530 return 0; 531 } else if (vif->ssid_len == sme->ssid_len && 532 !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) { 533 ath6kl_disconnect(vif); 534 } 535 536 memset(vif->ssid, 0, sizeof(vif->ssid)); 537 vif->ssid_len = sme->ssid_len; 538 memcpy(vif->ssid, sme->ssid, sme->ssid_len); 539 540 if (sme->channel) 541 vif->ch_hint = sme->channel->center_freq; 542 543 memset(vif->req_bssid, 0, sizeof(vif->req_bssid)); 544 if (sme->bssid && !is_broadcast_ether_addr(sme->bssid)) 545 memcpy(vif->req_bssid, sme->bssid, sizeof(vif->req_bssid)); 546 547 ath6kl_set_wpa_version(vif, sme->crypto.wpa_versions); 548 549 status = ath6kl_set_auth_type(vif, sme->auth_type); 550 if (status) { 551 up(&ar->sem); 552 return status; 553 } 554 555 if (sme->crypto.n_ciphers_pairwise) 556 ath6kl_set_cipher(vif, sme->crypto.ciphers_pairwise[0], true); 557 else 558 ath6kl_set_cipher(vif, 0, true); 559 560 ath6kl_set_cipher(vif, sme->crypto.cipher_group, false); 561 562 if (sme->crypto.n_akm_suites) 563 ath6kl_set_key_mgmt(vif, sme->crypto.akm_suites[0]); 564 565 if ((sme->key_len) && 566 (vif->auth_mode == NONE_AUTH) && 567 (vif->prwise_crypto == WEP_CRYPT)) { 568 struct ath6kl_key *key = NULL; 569 570 if (sme->key_idx > WMI_MAX_KEY_INDEX) { 571 ath6kl_err("key index %d out of bounds\n", 572 sme->key_idx); 573 up(&ar->sem); 574 return -ENOENT; 575 } 576 577 key = &vif->keys[sme->key_idx]; 578 key->key_len = sme->key_len; 579 memcpy(key->key, sme->key, key->key_len); 580 key->cipher = vif->prwise_crypto; 581 vif->def_txkey_index = sme->key_idx; 582 583 ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, sme->key_idx, 584 vif->prwise_crypto, 585 GROUP_USAGE | TX_USAGE, 586 key->key_len, 587 NULL, 0, 588 key->key, KEY_OP_INIT_VAL, NULL, 589 NO_SYNC_WMIFLAG); 590 } 591 592 if (!ar->usr_bss_filter) { 593 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 594 if (ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 595 ALL_BSS_FILTER, 0) != 0) { 596 ath6kl_err("couldn't set bss filtering\n"); 597 up(&ar->sem); 598 return -EIO; 599 } 600 } 601 602 vif->nw_type = vif->next_mode; 603 604 /* enable enhanced bmiss detection if applicable */ 605 ath6kl_cfg80211_sta_bmiss_enhance(vif, true); 606 607 if (vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT) 608 nw_subtype = SUBTYPE_P2PCLIENT; 609 610 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 611 "%s: connect called with authmode %d dot11 auth %d" 612 " PW crypto %d PW crypto len %d GRP crypto %d" 613 " GRP crypto len %d channel hint %u\n", 614 __func__, 615 vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto, 616 vif->prwise_crypto_len, vif->grp_crypto, 617 vif->grp_crypto_len, vif->ch_hint); 618 619 vif->reconnect_flag = 0; 620 621 if (vif->nw_type == INFRA_NETWORK) { 622 interval = max_t(u16, vif->listen_intvl_t, 623 ATH6KL_MAX_WOW_LISTEN_INTL); 624 status = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 625 interval, 626 0); 627 if (status) { 628 ath6kl_err("couldn't set listen intervel\n"); 629 up(&ar->sem); 630 return status; 631 } 632 } 633 634 status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type, 635 vif->dot11_auth_mode, vif->auth_mode, 636 vif->prwise_crypto, 637 vif->prwise_crypto_len, 638 vif->grp_crypto, vif->grp_crypto_len, 639 vif->ssid_len, vif->ssid, 640 vif->req_bssid, vif->ch_hint, 641 ar->connect_ctrl_flags, nw_subtype); 642 643 if (sme->bg_scan_period == 0) { 644 /* disable background scan if period is 0 */ 645 sme->bg_scan_period = 0xffff; 646 } else if (sme->bg_scan_period == -1) { 647 /* configure default value if not specified */ 648 sme->bg_scan_period = DEFAULT_BG_SCAN_PERIOD; 649 } 650 651 ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0, 0, 652 sme->bg_scan_period, 0, 0, 0, 3, 0, 0, 0); 653 654 up(&ar->sem); 655 656 if (status == -EINVAL) { 657 memset(vif->ssid, 0, sizeof(vif->ssid)); 658 vif->ssid_len = 0; 659 ath6kl_err("invalid request\n"); 660 return -ENOENT; 661 } else if (status) { 662 ath6kl_err("ath6kl_wmi_connect_cmd failed\n"); 663 return -EIO; 664 } 665 666 if ((!(ar->connect_ctrl_flags & CONNECT_DO_WPA_OFFLOAD)) && 667 ((vif->auth_mode == WPA_PSK_AUTH) || 668 (vif->auth_mode == WPA2_PSK_AUTH))) { 669 mod_timer(&vif->disconnect_timer, 670 jiffies + msecs_to_jiffies(DISCON_TIMER_INTVAL)); 671 } 672 673 ar->connect_ctrl_flags &= ~CONNECT_DO_WPA_OFFLOAD; 674 set_bit(CONNECT_PEND, &vif->flags); 675 676 return 0; 677 } 678 679 static struct cfg80211_bss * 680 ath6kl_add_bss_if_needed(struct ath6kl_vif *vif, 681 enum network_type nw_type, 682 const u8 *bssid, 683 struct ieee80211_channel *chan, 684 const u8 *beacon_ie, 685 size_t beacon_ie_len) 686 { 687 struct ath6kl *ar = vif->ar; 688 struct cfg80211_bss *bss; 689 u16 cap_mask, cap_val; 690 u8 *ie; 691 692 if (nw_type & ADHOC_NETWORK) { 693 cap_mask = WLAN_CAPABILITY_IBSS; 694 cap_val = WLAN_CAPABILITY_IBSS; 695 } else { 696 cap_mask = WLAN_CAPABILITY_ESS; 697 cap_val = WLAN_CAPABILITY_ESS; 698 } 699 700 bss = cfg80211_get_bss(ar->wiphy, chan, bssid, 701 vif->ssid, vif->ssid_len, 702 cap_mask, cap_val); 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 bssid, 0, cap_val, 100, 721 ie, 2 + vif->ssid_len + beacon_ie_len, 722 0, GFP_KERNEL); 723 if (bss) 724 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 725 "added bss %pM to cfg80211\n", bssid); 726 kfree(ie); 727 } else 728 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "cfg80211 already has a bss\n"); 729 730 return bss; 731 } 732 733 void ath6kl_cfg80211_connect_event(struct ath6kl_vif *vif, u16 channel, 734 u8 *bssid, u16 listen_intvl, 735 u16 beacon_intvl, 736 enum network_type nw_type, 737 u8 beacon_ie_len, u8 assoc_req_len, 738 u8 assoc_resp_len, u8 *assoc_info) 739 { 740 struct ieee80211_channel *chan; 741 struct ath6kl *ar = vif->ar; 742 struct cfg80211_bss *bss; 743 744 /* capinfo + listen interval */ 745 u8 assoc_req_ie_offset = sizeof(u16) + sizeof(u16); 746 747 /* capinfo + status code + associd */ 748 u8 assoc_resp_ie_offset = sizeof(u16) + sizeof(u16) + sizeof(u16); 749 750 u8 *assoc_req_ie = assoc_info + beacon_ie_len + assoc_req_ie_offset; 751 u8 *assoc_resp_ie = assoc_info + beacon_ie_len + assoc_req_len + 752 assoc_resp_ie_offset; 753 754 assoc_req_len -= assoc_req_ie_offset; 755 assoc_resp_len -= assoc_resp_ie_offset; 756 757 /* 758 * Store Beacon interval here; DTIM period will be available only once 759 * a Beacon frame from the AP is seen. 760 */ 761 vif->assoc_bss_beacon_int = beacon_intvl; 762 clear_bit(DTIM_PERIOD_AVAIL, &vif->flags); 763 764 if (nw_type & ADHOC_NETWORK) { 765 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC) { 766 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 767 "%s: ath6k not in ibss mode\n", __func__); 768 return; 769 } 770 } 771 772 if (nw_type & INFRA_NETWORK) { 773 if (vif->wdev.iftype != NL80211_IFTYPE_STATION && 774 vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) { 775 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 776 "%s: ath6k not in station mode\n", __func__); 777 return; 778 } 779 } 780 781 chan = ieee80211_get_channel(ar->wiphy, (int) channel); 782 783 bss = ath6kl_add_bss_if_needed(vif, nw_type, bssid, chan, 784 assoc_info, beacon_ie_len); 785 if (!bss) { 786 ath6kl_err("could not add cfg80211 bss entry\n"); 787 return; 788 } 789 790 if (nw_type & ADHOC_NETWORK) { 791 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "ad-hoc %s selected\n", 792 nw_type & ADHOC_CREATOR ? "creator" : "joiner"); 793 cfg80211_ibss_joined(vif->ndev, bssid, GFP_KERNEL); 794 cfg80211_put_bss(ar->wiphy, bss); 795 return; 796 } 797 798 if (vif->sme_state == SME_CONNECTING) { 799 /* inform connect result to cfg80211 */ 800 vif->sme_state = SME_CONNECTED; 801 cfg80211_connect_result(vif->ndev, bssid, 802 assoc_req_ie, assoc_req_len, 803 assoc_resp_ie, assoc_resp_len, 804 WLAN_STATUS_SUCCESS, GFP_KERNEL); 805 cfg80211_put_bss(ar->wiphy, bss); 806 } else if (vif->sme_state == SME_CONNECTED) { 807 /* inform roam event to cfg80211 */ 808 cfg80211_roamed_bss(vif->ndev, bss, assoc_req_ie, assoc_req_len, 809 assoc_resp_ie, assoc_resp_len, GFP_KERNEL); 810 } 811 } 812 813 static int ath6kl_cfg80211_disconnect(struct wiphy *wiphy, 814 struct net_device *dev, u16 reason_code) 815 { 816 struct ath6kl *ar = ath6kl_priv(dev); 817 struct ath6kl_vif *vif = netdev_priv(dev); 818 819 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: reason=%u\n", __func__, 820 reason_code); 821 822 ath6kl_cfg80211_sscan_disable(vif); 823 824 if (!ath6kl_cfg80211_ready(vif)) 825 return -EIO; 826 827 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) { 828 ath6kl_err("busy, destroy in progress\n"); 829 return -EBUSY; 830 } 831 832 if (down_interruptible(&ar->sem)) { 833 ath6kl_err("busy, couldn't get access\n"); 834 return -ERESTARTSYS; 835 } 836 837 vif->reconnect_flag = 0; 838 ath6kl_disconnect(vif); 839 memset(vif->ssid, 0, sizeof(vif->ssid)); 840 vif->ssid_len = 0; 841 842 if (!test_bit(SKIP_SCAN, &ar->flag)) 843 memset(vif->req_bssid, 0, sizeof(vif->req_bssid)); 844 845 up(&ar->sem); 846 847 vif->sme_state = SME_DISCONNECTED; 848 849 return 0; 850 } 851 852 void ath6kl_cfg80211_disconnect_event(struct ath6kl_vif *vif, u8 reason, 853 u8 *bssid, u8 assoc_resp_len, 854 u8 *assoc_info, u16 proto_reason) 855 { 856 struct ath6kl *ar = vif->ar; 857 858 if (vif->scan_req) { 859 cfg80211_scan_done(vif->scan_req, true); 860 vif->scan_req = NULL; 861 } 862 863 if (vif->nw_type & ADHOC_NETWORK) { 864 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC) { 865 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 866 "%s: ath6k not in ibss mode\n", __func__); 867 return; 868 } 869 memset(bssid, 0, ETH_ALEN); 870 cfg80211_ibss_joined(vif->ndev, bssid, GFP_KERNEL); 871 return; 872 } 873 874 if (vif->nw_type & INFRA_NETWORK) { 875 if (vif->wdev.iftype != NL80211_IFTYPE_STATION && 876 vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) { 877 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 878 "%s: ath6k not in station mode\n", __func__); 879 return; 880 } 881 } 882 883 clear_bit(CONNECT_PEND, &vif->flags); 884 885 if (vif->sme_state == SME_CONNECTING) { 886 cfg80211_connect_result(vif->ndev, 887 bssid, NULL, 0, 888 NULL, 0, 889 WLAN_STATUS_UNSPECIFIED_FAILURE, 890 GFP_KERNEL); 891 } else if (vif->sme_state == SME_CONNECTED) { 892 cfg80211_disconnected(vif->ndev, proto_reason, 893 NULL, 0, GFP_KERNEL); 894 } 895 896 vif->sme_state = SME_DISCONNECTED; 897 898 /* 899 * Send a disconnect command to target when a disconnect event is 900 * received with reason code other than 3 (DISCONNECT_CMD - disconnect 901 * request from host) to make the firmware stop trying to connect even 902 * after giving disconnect event. There will be one more disconnect 903 * event for this disconnect command with reason code DISCONNECT_CMD 904 * which won't be notified to cfg80211. 905 */ 906 if (reason != DISCONNECT_CMD) 907 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx); 908 } 909 910 static int ath6kl_set_probed_ssids(struct ath6kl *ar, 911 struct ath6kl_vif *vif, 912 struct cfg80211_ssid *ssids, int n_ssids, 913 struct cfg80211_match_set *match_set, 914 int n_match_ssid) 915 { 916 u8 i, j, index_to_add, ssid_found = false; 917 struct ath6kl_cfg80211_match_probe_ssid ssid_list[MAX_PROBED_SSIDS]; 918 919 memset(ssid_list, 0, sizeof(ssid_list)); 920 921 if (n_ssids > MAX_PROBED_SSIDS || 922 n_match_ssid > MAX_PROBED_SSIDS) 923 return -EINVAL; 924 925 for (i = 0; i < n_ssids; i++) { 926 memcpy(ssid_list[i].ssid.ssid, 927 ssids[i].ssid, 928 ssids[i].ssid_len); 929 ssid_list[i].ssid.ssid_len = ssids[i].ssid_len; 930 931 if (ssids[i].ssid_len) 932 ssid_list[i].flag = SPECIFIC_SSID_FLAG; 933 else 934 ssid_list[i].flag = ANY_SSID_FLAG; 935 936 if (n_match_ssid == 0) 937 ssid_list[i].flag |= MATCH_SSID_FLAG; 938 } 939 940 index_to_add = i; 941 942 for (i = 0; i < n_match_ssid; i++) { 943 ssid_found = false; 944 945 for (j = 0; j < n_ssids; j++) { 946 if ((match_set[i].ssid.ssid_len == 947 ssid_list[j].ssid.ssid_len) && 948 (!memcmp(ssid_list[j].ssid.ssid, 949 match_set[i].ssid.ssid, 950 match_set[i].ssid.ssid_len))) { 951 ssid_list[j].flag |= MATCH_SSID_FLAG; 952 ssid_found = true; 953 break; 954 } 955 } 956 957 if (ssid_found) 958 continue; 959 960 if (index_to_add >= MAX_PROBED_SSIDS) 961 continue; 962 963 ssid_list[index_to_add].ssid.ssid_len = 964 match_set[i].ssid.ssid_len; 965 memcpy(ssid_list[index_to_add].ssid.ssid, 966 match_set[i].ssid.ssid, 967 match_set[i].ssid.ssid_len); 968 ssid_list[index_to_add].flag |= MATCH_SSID_FLAG; 969 index_to_add++; 970 } 971 972 for (i = 0; i < index_to_add; i++) { 973 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i, 974 ssid_list[i].flag, 975 ssid_list[i].ssid.ssid_len, 976 ssid_list[i].ssid.ssid); 977 978 } 979 980 /* Make sure no old entries are left behind */ 981 for (i = index_to_add; i < MAX_PROBED_SSIDS; i++) { 982 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i, 983 DISABLE_SSID_FLAG, 0, NULL); 984 } 985 986 return 0; 987 } 988 989 static int ath6kl_cfg80211_scan(struct wiphy *wiphy, 990 struct cfg80211_scan_request *request) 991 { 992 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(request->wdev); 993 struct ath6kl *ar = ath6kl_priv(vif->ndev); 994 s8 n_channels = 0; 995 u16 *channels = NULL; 996 int ret = 0; 997 u32 force_fg_scan = 0; 998 999 if (!ath6kl_cfg80211_ready(vif)) 1000 return -EIO; 1001 1002 ath6kl_cfg80211_sscan_disable(vif); 1003 1004 if (!ar->usr_bss_filter) { 1005 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 1006 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 1007 ALL_BSS_FILTER, 0); 1008 if (ret) { 1009 ath6kl_err("couldn't set bss filtering\n"); 1010 return ret; 1011 } 1012 } 1013 1014 ret = ath6kl_set_probed_ssids(ar, vif, request->ssids, 1015 request->n_ssids, NULL, 0); 1016 if (ret < 0) 1017 return ret; 1018 1019 /* this also clears IE in fw if it's not set */ 1020 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx, 1021 WMI_FRAME_PROBE_REQ, 1022 request->ie, request->ie_len); 1023 if (ret) { 1024 ath6kl_err("failed to set Probe Request appie for scan\n"); 1025 return ret; 1026 } 1027 1028 /* 1029 * Scan only the requested channels if the request specifies a set of 1030 * channels. If the list is longer than the target supports, do not 1031 * configure the list and instead, scan all available channels. 1032 */ 1033 if (request->n_channels > 0 && 1034 request->n_channels <= WMI_MAX_CHANNELS) { 1035 u8 i; 1036 1037 n_channels = request->n_channels; 1038 1039 channels = kzalloc(n_channels * sizeof(u16), GFP_KERNEL); 1040 if (channels == NULL) { 1041 ath6kl_warn("failed to set scan channels, scan all channels"); 1042 n_channels = 0; 1043 } 1044 1045 for (i = 0; i < n_channels; i++) 1046 channels[i] = request->channels[i]->center_freq; 1047 } 1048 1049 if (test_bit(CONNECTED, &vif->flags)) 1050 force_fg_scan = 1; 1051 1052 vif->scan_req = request; 1053 1054 ret = ath6kl_wmi_beginscan_cmd(ar->wmi, vif->fw_vif_idx, 1055 WMI_LONG_SCAN, force_fg_scan, 1056 false, 0, 1057 ATH6KL_FG_SCAN_INTERVAL, 1058 n_channels, channels, 1059 request->no_cck, 1060 request->rates); 1061 if (ret) { 1062 ath6kl_err("failed to start scan: %d\n", ret); 1063 vif->scan_req = NULL; 1064 } 1065 1066 kfree(channels); 1067 1068 return ret; 1069 } 1070 1071 void ath6kl_cfg80211_scan_complete_event(struct ath6kl_vif *vif, bool aborted) 1072 { 1073 struct ath6kl *ar = vif->ar; 1074 int i; 1075 1076 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: status%s\n", __func__, 1077 aborted ? " aborted" : ""); 1078 1079 if (!vif->scan_req) 1080 return; 1081 1082 if (aborted) 1083 goto out; 1084 1085 if (vif->scan_req->n_ssids && vif->scan_req->ssids[0].ssid_len) { 1086 for (i = 0; i < vif->scan_req->n_ssids; i++) { 1087 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, 1088 i + 1, DISABLE_SSID_FLAG, 1089 0, NULL); 1090 } 1091 } 1092 1093 out: 1094 cfg80211_scan_done(vif->scan_req, aborted); 1095 vif->scan_req = NULL; 1096 } 1097 1098 void ath6kl_cfg80211_ch_switch_notify(struct ath6kl_vif *vif, int freq, 1099 enum wmi_phy_mode mode) 1100 { 1101 struct cfg80211_chan_def chandef; 1102 1103 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1104 "channel switch notify nw_type %d freq %d mode %d\n", 1105 vif->nw_type, freq, mode); 1106 1107 cfg80211_chandef_create(&chandef, 1108 ieee80211_get_channel(vif->ar->wiphy, freq), 1109 (mode == WMI_11G_HT20) ? 1110 NL80211_CHAN_HT20 : NL80211_CHAN_NO_HT); 1111 1112 cfg80211_ch_switch_notify(vif->ndev, &chandef); 1113 } 1114 1115 static int ath6kl_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev, 1116 u8 key_index, bool pairwise, 1117 const u8 *mac_addr, 1118 struct key_params *params) 1119 { 1120 struct ath6kl *ar = ath6kl_priv(ndev); 1121 struct ath6kl_vif *vif = netdev_priv(ndev); 1122 struct ath6kl_key *key = NULL; 1123 int seq_len; 1124 u8 key_usage; 1125 u8 key_type; 1126 1127 if (!ath6kl_cfg80211_ready(vif)) 1128 return -EIO; 1129 1130 if (params->cipher == CCKM_KRK_CIPHER_SUITE) { 1131 if (params->key_len != WMI_KRK_LEN) 1132 return -EINVAL; 1133 return ath6kl_wmi_add_krk_cmd(ar->wmi, vif->fw_vif_idx, 1134 params->key); 1135 } 1136 1137 if (key_index > WMI_MAX_KEY_INDEX) { 1138 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1139 "%s: key index %d out of bounds\n", __func__, 1140 key_index); 1141 return -ENOENT; 1142 } 1143 1144 key = &vif->keys[key_index]; 1145 memset(key, 0, sizeof(struct ath6kl_key)); 1146 1147 if (pairwise) 1148 key_usage = PAIRWISE_USAGE; 1149 else 1150 key_usage = GROUP_USAGE; 1151 1152 seq_len = params->seq_len; 1153 if (params->cipher == WLAN_CIPHER_SUITE_SMS4 && 1154 seq_len > ATH6KL_KEY_SEQ_LEN) { 1155 /* Only first half of the WPI PN is configured */ 1156 seq_len = ATH6KL_KEY_SEQ_LEN; 1157 } 1158 if (params->key_len > WLAN_MAX_KEY_LEN || 1159 seq_len > sizeof(key->seq)) 1160 return -EINVAL; 1161 1162 key->key_len = params->key_len; 1163 memcpy(key->key, params->key, key->key_len); 1164 key->seq_len = seq_len; 1165 memcpy(key->seq, params->seq, key->seq_len); 1166 key->cipher = params->cipher; 1167 1168 switch (key->cipher) { 1169 case WLAN_CIPHER_SUITE_WEP40: 1170 case WLAN_CIPHER_SUITE_WEP104: 1171 key_type = WEP_CRYPT; 1172 break; 1173 1174 case WLAN_CIPHER_SUITE_TKIP: 1175 key_type = TKIP_CRYPT; 1176 break; 1177 1178 case WLAN_CIPHER_SUITE_CCMP: 1179 key_type = AES_CRYPT; 1180 break; 1181 case WLAN_CIPHER_SUITE_SMS4: 1182 key_type = WAPI_CRYPT; 1183 break; 1184 1185 default: 1186 return -ENOTSUPP; 1187 } 1188 1189 if (((vif->auth_mode == WPA_PSK_AUTH) || 1190 (vif->auth_mode == WPA2_PSK_AUTH)) && 1191 (key_usage & GROUP_USAGE)) 1192 del_timer(&vif->disconnect_timer); 1193 1194 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1195 "%s: index %d, key_len %d, key_type 0x%x, key_usage 0x%x, seq_len %d\n", 1196 __func__, key_index, key->key_len, key_type, 1197 key_usage, key->seq_len); 1198 1199 if (vif->nw_type == AP_NETWORK && !pairwise && 1200 (key_type == TKIP_CRYPT || key_type == AES_CRYPT || 1201 key_type == WAPI_CRYPT)) { 1202 ar->ap_mode_bkey.valid = true; 1203 ar->ap_mode_bkey.key_index = key_index; 1204 ar->ap_mode_bkey.key_type = key_type; 1205 ar->ap_mode_bkey.key_len = key->key_len; 1206 memcpy(ar->ap_mode_bkey.key, key->key, key->key_len); 1207 if (!test_bit(CONNECTED, &vif->flags)) { 1208 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1209 "Delay initial group key configuration until AP mode has been started\n"); 1210 /* 1211 * The key will be set in ath6kl_connect_ap_mode() once 1212 * the connected event is received from the target. 1213 */ 1214 return 0; 1215 } 1216 } 1217 1218 if (vif->next_mode == AP_NETWORK && key_type == WEP_CRYPT && 1219 !test_bit(CONNECTED, &vif->flags)) { 1220 /* 1221 * Store the key locally so that it can be re-configured after 1222 * the AP mode has properly started 1223 * (ath6kl_install_statioc_wep_keys). 1224 */ 1225 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1226 "Delay WEP key configuration until AP mode has been started\n"); 1227 vif->wep_key_list[key_index].key_len = key->key_len; 1228 memcpy(vif->wep_key_list[key_index].key, key->key, 1229 key->key_len); 1230 return 0; 1231 } 1232 1233 return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, key_index, 1234 key_type, key_usage, key->key_len, 1235 key->seq, key->seq_len, key->key, 1236 KEY_OP_INIT_VAL, 1237 (u8 *) mac_addr, SYNC_BOTH_WMIFLAG); 1238 } 1239 1240 static int ath6kl_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev, 1241 u8 key_index, bool pairwise, 1242 const u8 *mac_addr) 1243 { 1244 struct ath6kl *ar = ath6kl_priv(ndev); 1245 struct ath6kl_vif *vif = netdev_priv(ndev); 1246 1247 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index); 1248 1249 if (!ath6kl_cfg80211_ready(vif)) 1250 return -EIO; 1251 1252 if (key_index > WMI_MAX_KEY_INDEX) { 1253 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1254 "%s: key index %d out of bounds\n", __func__, 1255 key_index); 1256 return -ENOENT; 1257 } 1258 1259 if (!vif->keys[key_index].key_len) { 1260 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1261 "%s: index %d is empty\n", __func__, key_index); 1262 return 0; 1263 } 1264 1265 vif->keys[key_index].key_len = 0; 1266 1267 return ath6kl_wmi_deletekey_cmd(ar->wmi, vif->fw_vif_idx, key_index); 1268 } 1269 1270 static int ath6kl_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev, 1271 u8 key_index, bool pairwise, 1272 const u8 *mac_addr, void *cookie, 1273 void (*callback) (void *cookie, 1274 struct key_params *)) 1275 { 1276 struct ath6kl_vif *vif = netdev_priv(ndev); 1277 struct ath6kl_key *key = NULL; 1278 struct key_params params; 1279 1280 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index); 1281 1282 if (!ath6kl_cfg80211_ready(vif)) 1283 return -EIO; 1284 1285 if (key_index > WMI_MAX_KEY_INDEX) { 1286 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1287 "%s: key index %d out of bounds\n", __func__, 1288 key_index); 1289 return -ENOENT; 1290 } 1291 1292 key = &vif->keys[key_index]; 1293 memset(¶ms, 0, sizeof(params)); 1294 params.cipher = key->cipher; 1295 params.key_len = key->key_len; 1296 params.seq_len = key->seq_len; 1297 params.seq = key->seq; 1298 params.key = key->key; 1299 1300 callback(cookie, ¶ms); 1301 1302 return key->key_len ? 0 : -ENOENT; 1303 } 1304 1305 static int ath6kl_cfg80211_set_default_key(struct wiphy *wiphy, 1306 struct net_device *ndev, 1307 u8 key_index, bool unicast, 1308 bool multicast) 1309 { 1310 struct ath6kl *ar = ath6kl_priv(ndev); 1311 struct ath6kl_vif *vif = netdev_priv(ndev); 1312 struct ath6kl_key *key = NULL; 1313 u8 key_usage; 1314 enum crypto_type key_type = NONE_CRYPT; 1315 1316 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index); 1317 1318 if (!ath6kl_cfg80211_ready(vif)) 1319 return -EIO; 1320 1321 if (key_index > WMI_MAX_KEY_INDEX) { 1322 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1323 "%s: key index %d out of bounds\n", 1324 __func__, key_index); 1325 return -ENOENT; 1326 } 1327 1328 if (!vif->keys[key_index].key_len) { 1329 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: invalid key index %d\n", 1330 __func__, key_index); 1331 return -EINVAL; 1332 } 1333 1334 vif->def_txkey_index = key_index; 1335 key = &vif->keys[vif->def_txkey_index]; 1336 key_usage = GROUP_USAGE; 1337 if (vif->prwise_crypto == WEP_CRYPT) 1338 key_usage |= TX_USAGE; 1339 if (unicast) 1340 key_type = vif->prwise_crypto; 1341 if (multicast) 1342 key_type = vif->grp_crypto; 1343 1344 if (vif->next_mode == AP_NETWORK && !test_bit(CONNECTED, &vif->flags)) 1345 return 0; /* Delay until AP mode has been started */ 1346 1347 return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, 1348 vif->def_txkey_index, 1349 key_type, key_usage, 1350 key->key_len, key->seq, key->seq_len, 1351 key->key, 1352 KEY_OP_INIT_VAL, NULL, 1353 SYNC_BOTH_WMIFLAG); 1354 } 1355 1356 void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, 1357 bool ismcast) 1358 { 1359 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1360 "%s: keyid %d, ismcast %d\n", __func__, keyid, ismcast); 1361 1362 cfg80211_michael_mic_failure(vif->ndev, vif->bssid, 1363 (ismcast ? NL80211_KEYTYPE_GROUP : 1364 NL80211_KEYTYPE_PAIRWISE), keyid, NULL, 1365 GFP_KERNEL); 1366 } 1367 1368 static int ath6kl_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 1369 { 1370 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy); 1371 struct ath6kl_vif *vif; 1372 int ret; 1373 1374 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: changed 0x%x\n", __func__, 1375 changed); 1376 1377 vif = ath6kl_vif_first(ar); 1378 if (!vif) 1379 return -EIO; 1380 1381 if (!ath6kl_cfg80211_ready(vif)) 1382 return -EIO; 1383 1384 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 1385 ret = ath6kl_wmi_set_rts_cmd(ar->wmi, wiphy->rts_threshold); 1386 if (ret != 0) { 1387 ath6kl_err("ath6kl_wmi_set_rts_cmd failed\n"); 1388 return -EIO; 1389 } 1390 } 1391 1392 return 0; 1393 } 1394 1395 static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy, 1396 struct wireless_dev *wdev, 1397 enum nl80211_tx_power_setting type, 1398 int mbm) 1399 { 1400 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy); 1401 struct ath6kl_vif *vif; 1402 int dbm = MBM_TO_DBM(mbm); 1403 1404 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x, dbm %d\n", __func__, 1405 type, dbm); 1406 1407 vif = ath6kl_vif_first(ar); 1408 if (!vif) 1409 return -EIO; 1410 1411 if (!ath6kl_cfg80211_ready(vif)) 1412 return -EIO; 1413 1414 switch (type) { 1415 case NL80211_TX_POWER_AUTOMATIC: 1416 return 0; 1417 case NL80211_TX_POWER_LIMITED: 1418 ar->tx_pwr = dbm; 1419 break; 1420 default: 1421 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x not supported\n", 1422 __func__, type); 1423 return -EOPNOTSUPP; 1424 } 1425 1426 ath6kl_wmi_set_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx, dbm); 1427 1428 return 0; 1429 } 1430 1431 static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy, 1432 struct wireless_dev *wdev, 1433 int *dbm) 1434 { 1435 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy); 1436 struct ath6kl_vif *vif; 1437 1438 vif = ath6kl_vif_first(ar); 1439 if (!vif) 1440 return -EIO; 1441 1442 if (!ath6kl_cfg80211_ready(vif)) 1443 return -EIO; 1444 1445 if (test_bit(CONNECTED, &vif->flags)) { 1446 ar->tx_pwr = 0; 1447 1448 if (ath6kl_wmi_get_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx) != 0) { 1449 ath6kl_err("ath6kl_wmi_get_tx_pwr_cmd failed\n"); 1450 return -EIO; 1451 } 1452 1453 wait_event_interruptible_timeout(ar->event_wq, ar->tx_pwr != 0, 1454 5 * HZ); 1455 1456 if (signal_pending(current)) { 1457 ath6kl_err("target did not respond\n"); 1458 return -EINTR; 1459 } 1460 } 1461 1462 *dbm = ar->tx_pwr; 1463 return 0; 1464 } 1465 1466 static int ath6kl_cfg80211_set_power_mgmt(struct wiphy *wiphy, 1467 struct net_device *dev, 1468 bool pmgmt, int timeout) 1469 { 1470 struct ath6kl *ar = ath6kl_priv(dev); 1471 struct wmi_power_mode_cmd mode; 1472 struct ath6kl_vif *vif = netdev_priv(dev); 1473 1474 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: pmgmt %d, timeout %d\n", 1475 __func__, pmgmt, timeout); 1476 1477 if (!ath6kl_cfg80211_ready(vif)) 1478 return -EIO; 1479 1480 if (pmgmt) { 1481 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: rec power\n", __func__); 1482 mode.pwr_mode = REC_POWER; 1483 } else { 1484 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: max perf\n", __func__); 1485 mode.pwr_mode = MAX_PERF_POWER; 1486 } 1487 1488 if (ath6kl_wmi_powermode_cmd(ar->wmi, vif->fw_vif_idx, 1489 mode.pwr_mode) != 0) { 1490 ath6kl_err("wmi_powermode_cmd failed\n"); 1491 return -EIO; 1492 } 1493 1494 return 0; 1495 } 1496 1497 static struct wireless_dev *ath6kl_cfg80211_add_iface(struct wiphy *wiphy, 1498 const char *name, 1499 enum nl80211_iftype type, 1500 u32 *flags, 1501 struct vif_params *params) 1502 { 1503 struct ath6kl *ar = wiphy_priv(wiphy); 1504 struct wireless_dev *wdev; 1505 u8 if_idx, nw_type; 1506 1507 if (ar->num_vif == ar->vif_max) { 1508 ath6kl_err("Reached maximum number of supported vif\n"); 1509 return ERR_PTR(-EINVAL); 1510 } 1511 1512 if (!ath6kl_is_valid_iftype(ar, type, &if_idx, &nw_type)) { 1513 ath6kl_err("Not a supported interface type\n"); 1514 return ERR_PTR(-EINVAL); 1515 } 1516 1517 wdev = ath6kl_interface_add(ar, name, type, if_idx, nw_type); 1518 if (!wdev) 1519 return ERR_PTR(-ENOMEM); 1520 1521 ar->num_vif++; 1522 1523 return wdev; 1524 } 1525 1526 static int ath6kl_cfg80211_del_iface(struct wiphy *wiphy, 1527 struct wireless_dev *wdev) 1528 { 1529 struct ath6kl *ar = wiphy_priv(wiphy); 1530 struct ath6kl_vif *vif = netdev_priv(wdev->netdev); 1531 1532 spin_lock_bh(&ar->list_lock); 1533 list_del(&vif->list); 1534 spin_unlock_bh(&ar->list_lock); 1535 1536 ath6kl_cfg80211_vif_stop(vif, test_bit(WMI_READY, &ar->flag)); 1537 1538 rtnl_lock(); 1539 ath6kl_cfg80211_vif_cleanup(vif); 1540 rtnl_unlock(); 1541 1542 return 0; 1543 } 1544 1545 static int ath6kl_cfg80211_change_iface(struct wiphy *wiphy, 1546 struct net_device *ndev, 1547 enum nl80211_iftype type, u32 *flags, 1548 struct vif_params *params) 1549 { 1550 struct ath6kl_vif *vif = netdev_priv(ndev); 1551 int i; 1552 1553 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type %u\n", __func__, type); 1554 1555 /* 1556 * Don't bring up p2p on an interface which is not initialized 1557 * for p2p operation where fw does not have capability to switch 1558 * dynamically between non-p2p and p2p type interface. 1559 */ 1560 if (!test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX, 1561 vif->ar->fw_capabilities) && 1562 (type == NL80211_IFTYPE_P2P_CLIENT || 1563 type == NL80211_IFTYPE_P2P_GO)) { 1564 if (vif->ar->vif_max == 1) { 1565 if (vif->fw_vif_idx != 0) 1566 return -EINVAL; 1567 else 1568 goto set_iface_type; 1569 } 1570 1571 for (i = vif->ar->max_norm_iface; i < vif->ar->vif_max; i++) { 1572 if (i == vif->fw_vif_idx) 1573 break; 1574 } 1575 1576 if (i == vif->ar->vif_max) { 1577 ath6kl_err("Invalid interface to bring up P2P\n"); 1578 return -EINVAL; 1579 } 1580 } 1581 1582 /* need to clean up enhanced bmiss detection fw state */ 1583 ath6kl_cfg80211_sta_bmiss_enhance(vif, false); 1584 1585 set_iface_type: 1586 switch (type) { 1587 case NL80211_IFTYPE_STATION: 1588 case NL80211_IFTYPE_P2P_CLIENT: 1589 vif->next_mode = INFRA_NETWORK; 1590 break; 1591 case NL80211_IFTYPE_ADHOC: 1592 vif->next_mode = ADHOC_NETWORK; 1593 break; 1594 case NL80211_IFTYPE_AP: 1595 case NL80211_IFTYPE_P2P_GO: 1596 vif->next_mode = AP_NETWORK; 1597 break; 1598 default: 1599 ath6kl_err("invalid interface type %u\n", type); 1600 return -EOPNOTSUPP; 1601 } 1602 1603 vif->wdev.iftype = type; 1604 1605 return 0; 1606 } 1607 1608 static int ath6kl_cfg80211_join_ibss(struct wiphy *wiphy, 1609 struct net_device *dev, 1610 struct cfg80211_ibss_params *ibss_param) 1611 { 1612 struct ath6kl *ar = ath6kl_priv(dev); 1613 struct ath6kl_vif *vif = netdev_priv(dev); 1614 int status; 1615 1616 if (!ath6kl_cfg80211_ready(vif)) 1617 return -EIO; 1618 1619 vif->ssid_len = ibss_param->ssid_len; 1620 memcpy(vif->ssid, ibss_param->ssid, vif->ssid_len); 1621 1622 if (ibss_param->chandef.chan) 1623 vif->ch_hint = ibss_param->chandef.chan->center_freq; 1624 1625 if (ibss_param->channel_fixed) { 1626 /* 1627 * TODO: channel_fixed: The channel should be fixed, do not 1628 * search for IBSSs to join on other channels. Target 1629 * firmware does not support this feature, needs to be 1630 * updated. 1631 */ 1632 return -EOPNOTSUPP; 1633 } 1634 1635 memset(vif->req_bssid, 0, sizeof(vif->req_bssid)); 1636 if (ibss_param->bssid && !is_broadcast_ether_addr(ibss_param->bssid)) 1637 memcpy(vif->req_bssid, ibss_param->bssid, 1638 sizeof(vif->req_bssid)); 1639 1640 ath6kl_set_wpa_version(vif, 0); 1641 1642 status = ath6kl_set_auth_type(vif, NL80211_AUTHTYPE_OPEN_SYSTEM); 1643 if (status) 1644 return status; 1645 1646 if (ibss_param->privacy) { 1647 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, true); 1648 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, false); 1649 } else { 1650 ath6kl_set_cipher(vif, 0, true); 1651 ath6kl_set_cipher(vif, 0, false); 1652 } 1653 1654 vif->nw_type = vif->next_mode; 1655 1656 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1657 "%s: connect called with authmode %d dot11 auth %d" 1658 " PW crypto %d PW crypto len %d GRP crypto %d" 1659 " GRP crypto len %d channel hint %u\n", 1660 __func__, 1661 vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto, 1662 vif->prwise_crypto_len, vif->grp_crypto, 1663 vif->grp_crypto_len, vif->ch_hint); 1664 1665 status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type, 1666 vif->dot11_auth_mode, vif->auth_mode, 1667 vif->prwise_crypto, 1668 vif->prwise_crypto_len, 1669 vif->grp_crypto, vif->grp_crypto_len, 1670 vif->ssid_len, vif->ssid, 1671 vif->req_bssid, vif->ch_hint, 1672 ar->connect_ctrl_flags, SUBTYPE_NONE); 1673 set_bit(CONNECT_PEND, &vif->flags); 1674 1675 return 0; 1676 } 1677 1678 static int ath6kl_cfg80211_leave_ibss(struct wiphy *wiphy, 1679 struct net_device *dev) 1680 { 1681 struct ath6kl_vif *vif = netdev_priv(dev); 1682 1683 if (!ath6kl_cfg80211_ready(vif)) 1684 return -EIO; 1685 1686 ath6kl_disconnect(vif); 1687 memset(vif->ssid, 0, sizeof(vif->ssid)); 1688 vif->ssid_len = 0; 1689 1690 return 0; 1691 } 1692 1693 static const u32 cipher_suites[] = { 1694 WLAN_CIPHER_SUITE_WEP40, 1695 WLAN_CIPHER_SUITE_WEP104, 1696 WLAN_CIPHER_SUITE_TKIP, 1697 WLAN_CIPHER_SUITE_CCMP, 1698 CCKM_KRK_CIPHER_SUITE, 1699 WLAN_CIPHER_SUITE_SMS4, 1700 }; 1701 1702 static bool is_rate_legacy(s32 rate) 1703 { 1704 static const s32 legacy[] = { 1000, 2000, 5500, 11000, 1705 6000, 9000, 12000, 18000, 24000, 1706 36000, 48000, 54000 1707 }; 1708 u8 i; 1709 1710 for (i = 0; i < ARRAY_SIZE(legacy); i++) 1711 if (rate == legacy[i]) 1712 return true; 1713 1714 return false; 1715 } 1716 1717 static bool is_rate_ht20(s32 rate, u8 *mcs, bool *sgi) 1718 { 1719 static const s32 ht20[] = { 6500, 13000, 19500, 26000, 39000, 1720 52000, 58500, 65000, 72200 1721 }; 1722 u8 i; 1723 1724 for (i = 0; i < ARRAY_SIZE(ht20); i++) { 1725 if (rate == ht20[i]) { 1726 if (i == ARRAY_SIZE(ht20) - 1) 1727 /* last rate uses sgi */ 1728 *sgi = true; 1729 else 1730 *sgi = false; 1731 1732 *mcs = i; 1733 return true; 1734 } 1735 } 1736 return false; 1737 } 1738 1739 static bool is_rate_ht40(s32 rate, u8 *mcs, bool *sgi) 1740 { 1741 static const s32 ht40[] = { 13500, 27000, 40500, 54000, 1742 81000, 108000, 121500, 135000, 1743 150000 1744 }; 1745 u8 i; 1746 1747 for (i = 0; i < ARRAY_SIZE(ht40); i++) { 1748 if (rate == ht40[i]) { 1749 if (i == ARRAY_SIZE(ht40) - 1) 1750 /* last rate uses sgi */ 1751 *sgi = true; 1752 else 1753 *sgi = false; 1754 1755 *mcs = i; 1756 return true; 1757 } 1758 } 1759 1760 return false; 1761 } 1762 1763 static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev, 1764 u8 *mac, struct station_info *sinfo) 1765 { 1766 struct ath6kl *ar = ath6kl_priv(dev); 1767 struct ath6kl_vif *vif = netdev_priv(dev); 1768 long left; 1769 bool sgi; 1770 s32 rate; 1771 int ret; 1772 u8 mcs; 1773 1774 if (memcmp(mac, vif->bssid, ETH_ALEN) != 0) 1775 return -ENOENT; 1776 1777 if (down_interruptible(&ar->sem)) 1778 return -EBUSY; 1779 1780 set_bit(STATS_UPDATE_PEND, &vif->flags); 1781 1782 ret = ath6kl_wmi_get_stats_cmd(ar->wmi, vif->fw_vif_idx); 1783 1784 if (ret != 0) { 1785 up(&ar->sem); 1786 return -EIO; 1787 } 1788 1789 left = wait_event_interruptible_timeout(ar->event_wq, 1790 !test_bit(STATS_UPDATE_PEND, 1791 &vif->flags), 1792 WMI_TIMEOUT); 1793 1794 up(&ar->sem); 1795 1796 if (left == 0) 1797 return -ETIMEDOUT; 1798 else if (left < 0) 1799 return left; 1800 1801 if (vif->target_stats.rx_byte) { 1802 sinfo->rx_bytes = vif->target_stats.rx_byte; 1803 sinfo->filled |= STATION_INFO_RX_BYTES64; 1804 sinfo->rx_packets = vif->target_stats.rx_pkt; 1805 sinfo->filled |= STATION_INFO_RX_PACKETS; 1806 } 1807 1808 if (vif->target_stats.tx_byte) { 1809 sinfo->tx_bytes = vif->target_stats.tx_byte; 1810 sinfo->filled |= STATION_INFO_TX_BYTES64; 1811 sinfo->tx_packets = vif->target_stats.tx_pkt; 1812 sinfo->filled |= STATION_INFO_TX_PACKETS; 1813 } 1814 1815 sinfo->signal = vif->target_stats.cs_rssi; 1816 sinfo->filled |= STATION_INFO_SIGNAL; 1817 1818 rate = vif->target_stats.tx_ucast_rate; 1819 1820 if (is_rate_legacy(rate)) { 1821 sinfo->txrate.legacy = rate / 100; 1822 } else if (is_rate_ht20(rate, &mcs, &sgi)) { 1823 if (sgi) { 1824 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; 1825 sinfo->txrate.mcs = mcs - 1; 1826 } else { 1827 sinfo->txrate.mcs = mcs; 1828 } 1829 1830 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS; 1831 } else if (is_rate_ht40(rate, &mcs, &sgi)) { 1832 if (sgi) { 1833 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; 1834 sinfo->txrate.mcs = mcs - 1; 1835 } else { 1836 sinfo->txrate.mcs = mcs; 1837 } 1838 1839 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 1840 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS; 1841 } else { 1842 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 1843 "invalid rate from stats: %d\n", rate); 1844 ath6kl_debug_war(ar, ATH6KL_WAR_INVALID_RATE); 1845 return 0; 1846 } 1847 1848 sinfo->filled |= STATION_INFO_TX_BITRATE; 1849 1850 if (test_bit(CONNECTED, &vif->flags) && 1851 test_bit(DTIM_PERIOD_AVAIL, &vif->flags) && 1852 vif->nw_type == INFRA_NETWORK) { 1853 sinfo->filled |= STATION_INFO_BSS_PARAM; 1854 sinfo->bss_param.flags = 0; 1855 sinfo->bss_param.dtim_period = vif->assoc_bss_dtim_period; 1856 sinfo->bss_param.beacon_interval = vif->assoc_bss_beacon_int; 1857 } 1858 1859 return 0; 1860 } 1861 1862 static int ath6kl_set_pmksa(struct wiphy *wiphy, struct net_device *netdev, 1863 struct cfg80211_pmksa *pmksa) 1864 { 1865 struct ath6kl *ar = ath6kl_priv(netdev); 1866 struct ath6kl_vif *vif = netdev_priv(netdev); 1867 1868 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid, 1869 pmksa->pmkid, true); 1870 } 1871 1872 static int ath6kl_del_pmksa(struct wiphy *wiphy, struct net_device *netdev, 1873 struct cfg80211_pmksa *pmksa) 1874 { 1875 struct ath6kl *ar = ath6kl_priv(netdev); 1876 struct ath6kl_vif *vif = netdev_priv(netdev); 1877 1878 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid, 1879 pmksa->pmkid, false); 1880 } 1881 1882 static int ath6kl_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev) 1883 { 1884 struct ath6kl *ar = ath6kl_priv(netdev); 1885 struct ath6kl_vif *vif = netdev_priv(netdev); 1886 1887 if (test_bit(CONNECTED, &vif->flags)) 1888 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, 1889 vif->bssid, NULL, false); 1890 return 0; 1891 } 1892 1893 static int ath6kl_wow_usr(struct ath6kl *ar, struct ath6kl_vif *vif, 1894 struct cfg80211_wowlan *wow, u32 *filter) 1895 { 1896 int ret, pos; 1897 u8 mask[WOW_PATTERN_SIZE]; 1898 u16 i; 1899 1900 /* Configure the patterns that we received from the user. */ 1901 for (i = 0; i < wow->n_patterns; i++) { 1902 1903 /* 1904 * Convert given nl80211 specific mask value to equivalent 1905 * driver specific mask value and send it to the chip along 1906 * with patterns. For example, If the mask value defined in 1907 * struct cfg80211_wowlan is 0xA (equivalent binary is 1010), 1908 * then equivalent driver specific mask value is 1909 * "0xFF 0x00 0xFF 0x00". 1910 */ 1911 memset(&mask, 0, sizeof(mask)); 1912 for (pos = 0; pos < wow->patterns[i].pattern_len; pos++) { 1913 if (wow->patterns[i].mask[pos / 8] & (0x1 << (pos % 8))) 1914 mask[pos] = 0xFF; 1915 } 1916 /* 1917 * Note: Pattern's offset is not passed as part of wowlan 1918 * parameter from CFG layer. So it's always passed as ZERO 1919 * to the firmware. It means, given WOW patterns are always 1920 * matched from the first byte of received pkt in the firmware. 1921 */ 1922 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi, 1923 vif->fw_vif_idx, WOW_LIST_ID, 1924 wow->patterns[i].pattern_len, 1925 0 /* pattern offset */, 1926 wow->patterns[i].pattern, mask); 1927 if (ret) 1928 return ret; 1929 } 1930 1931 if (wow->disconnect) 1932 *filter |= WOW_FILTER_OPTION_NWK_DISASSOC; 1933 1934 if (wow->magic_pkt) 1935 *filter |= WOW_FILTER_OPTION_MAGIC_PACKET; 1936 1937 if (wow->gtk_rekey_failure) 1938 *filter |= WOW_FILTER_OPTION_GTK_ERROR; 1939 1940 if (wow->eap_identity_req) 1941 *filter |= WOW_FILTER_OPTION_EAP_REQ; 1942 1943 if (wow->four_way_handshake) 1944 *filter |= WOW_FILTER_OPTION_8021X_4WAYHS; 1945 1946 return 0; 1947 } 1948 1949 static int ath6kl_wow_ap(struct ath6kl *ar, struct ath6kl_vif *vif) 1950 { 1951 static const u8 unicst_pattern[] = { 0x00, 0x00, 0x00, 1952 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1953 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1954 0x00, 0x08 }; 1955 static const u8 unicst_mask[] = { 0x01, 0x00, 0x00, 1956 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1957 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1958 0x00, 0x7f }; 1959 u8 unicst_offset = 0; 1960 static const u8 arp_pattern[] = { 0x08, 0x06 }; 1961 static const u8 arp_mask[] = { 0xff, 0xff }; 1962 u8 arp_offset = 20; 1963 static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 }; 1964 static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 }; 1965 u8 discvr_offset = 38; 1966 static const u8 dhcp_pattern[] = { 0xff, 0xff, 0xff, 0xff, 1967 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1968 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 1969 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1970 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1971 0x00, 0x00, 0x00, 0x00, 0x00, 0x43 /* port 67 */ }; 1972 static const u8 dhcp_mask[] = { 0xff, 0xff, 0xff, 0xff, 1973 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1974 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 1975 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1976 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 1977 0x00, 0x00, 0x00, 0x00, 0xff, 0xff /* port 67 */ }; 1978 u8 dhcp_offset = 0; 1979 int ret; 1980 1981 /* Setup unicast IP, EAPOL-like and ARP pkt pattern */ 1982 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi, 1983 vif->fw_vif_idx, WOW_LIST_ID, 1984 sizeof(unicst_pattern), unicst_offset, 1985 unicst_pattern, unicst_mask); 1986 if (ret) { 1987 ath6kl_err("failed to add WOW unicast IP pattern\n"); 1988 return ret; 1989 } 1990 1991 /* Setup all ARP pkt pattern */ 1992 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi, 1993 vif->fw_vif_idx, WOW_LIST_ID, 1994 sizeof(arp_pattern), arp_offset, 1995 arp_pattern, arp_mask); 1996 if (ret) { 1997 ath6kl_err("failed to add WOW ARP pattern\n"); 1998 return ret; 1999 } 2000 2001 /* 2002 * Setup multicast pattern for mDNS 224.0.0.251, 2003 * SSDP 239.255.255.250 and LLMNR 224.0.0.252 2004 */ 2005 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi, 2006 vif->fw_vif_idx, WOW_LIST_ID, 2007 sizeof(discvr_pattern), discvr_offset, 2008 discvr_pattern, discvr_mask); 2009 if (ret) { 2010 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n"); 2011 return ret; 2012 } 2013 2014 /* Setup all DHCP broadcast pkt pattern */ 2015 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi, 2016 vif->fw_vif_idx, WOW_LIST_ID, 2017 sizeof(dhcp_pattern), dhcp_offset, 2018 dhcp_pattern, dhcp_mask); 2019 if (ret) { 2020 ath6kl_err("failed to add WOW DHCP broadcast pattern\n"); 2021 return ret; 2022 } 2023 2024 return 0; 2025 } 2026 2027 static int ath6kl_wow_sta(struct ath6kl *ar, struct ath6kl_vif *vif) 2028 { 2029 struct net_device *ndev = vif->ndev; 2030 static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 }; 2031 static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 }; 2032 u8 discvr_offset = 38; 2033 u8 mac_mask[ETH_ALEN]; 2034 int ret; 2035 2036 /* Setup unicast pkt pattern */ 2037 memset(mac_mask, 0xff, ETH_ALEN); 2038 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi, 2039 vif->fw_vif_idx, WOW_LIST_ID, 2040 ETH_ALEN, 0, ndev->dev_addr, 2041 mac_mask); 2042 if (ret) { 2043 ath6kl_err("failed to add WOW unicast pattern\n"); 2044 return ret; 2045 } 2046 2047 /* 2048 * Setup multicast pattern for mDNS 224.0.0.251, 2049 * SSDP 239.255.255.250 and LLMNR 224.0.0.252 2050 */ 2051 if ((ndev->flags & IFF_ALLMULTI) || 2052 (ndev->flags & IFF_MULTICAST && netdev_mc_count(ndev) > 0)) { 2053 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi, 2054 vif->fw_vif_idx, WOW_LIST_ID, 2055 sizeof(discvr_pattern), discvr_offset, 2056 discvr_pattern, discvr_mask); 2057 if (ret) { 2058 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n"); 2059 return ret; 2060 } 2061 } 2062 2063 return 0; 2064 } 2065 2066 static int is_hsleep_mode_procsed(struct ath6kl_vif *vif) 2067 { 2068 return test_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags); 2069 } 2070 2071 static bool is_ctrl_ep_empty(struct ath6kl *ar) 2072 { 2073 return !ar->tx_pending[ar->ctrl_ep]; 2074 } 2075 2076 static int ath6kl_cfg80211_host_sleep(struct ath6kl *ar, struct ath6kl_vif *vif) 2077 { 2078 int ret, left; 2079 2080 clear_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags); 2081 2082 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx, 2083 ATH6KL_HOST_MODE_ASLEEP); 2084 if (ret) 2085 return ret; 2086 2087 left = wait_event_interruptible_timeout(ar->event_wq, 2088 is_hsleep_mode_procsed(vif), 2089 WMI_TIMEOUT); 2090 if (left == 0) { 2091 ath6kl_warn("timeout, didn't get host sleep cmd processed event\n"); 2092 ret = -ETIMEDOUT; 2093 } else if (left < 0) { 2094 ath6kl_warn("error while waiting for host sleep cmd processed event %d\n", 2095 left); 2096 ret = left; 2097 } 2098 2099 if (ar->tx_pending[ar->ctrl_ep]) { 2100 left = wait_event_interruptible_timeout(ar->event_wq, 2101 is_ctrl_ep_empty(ar), 2102 WMI_TIMEOUT); 2103 if (left == 0) { 2104 ath6kl_warn("clear wmi ctrl data timeout\n"); 2105 ret = -ETIMEDOUT; 2106 } else if (left < 0) { 2107 ath6kl_warn("clear wmi ctrl data failed: %d\n", left); 2108 ret = left; 2109 } 2110 } 2111 2112 return ret; 2113 } 2114 2115 static int ath6kl_wow_suspend_vif(struct ath6kl_vif *vif, 2116 struct cfg80211_wowlan *wow, u32 *filter) 2117 { 2118 struct ath6kl *ar = vif->ar; 2119 struct in_device *in_dev; 2120 struct in_ifaddr *ifa; 2121 int ret; 2122 u16 i, bmiss_time; 2123 __be32 ips[MAX_IP_ADDRS]; 2124 u8 index = 0; 2125 2126 if (!test_bit(NETDEV_MCAST_ALL_ON, &vif->flags) && 2127 test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER, 2128 ar->fw_capabilities)) { 2129 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, 2130 vif->fw_vif_idx, false); 2131 if (ret) 2132 return ret; 2133 } 2134 2135 /* Clear existing WOW patterns */ 2136 for (i = 0; i < WOW_MAX_FILTERS_PER_LIST; i++) 2137 ath6kl_wmi_del_wow_pattern_cmd(ar->wmi, vif->fw_vif_idx, 2138 WOW_LIST_ID, i); 2139 2140 /* 2141 * Skip the default WOW pattern configuration 2142 * if the driver receives any WOW patterns from 2143 * the user. 2144 */ 2145 if (wow) 2146 ret = ath6kl_wow_usr(ar, vif, wow, filter); 2147 else if (vif->nw_type == AP_NETWORK) 2148 ret = ath6kl_wow_ap(ar, vif); 2149 else 2150 ret = ath6kl_wow_sta(ar, vif); 2151 2152 if (ret) 2153 return ret; 2154 2155 netif_stop_queue(vif->ndev); 2156 2157 if (vif->nw_type != AP_NETWORK) { 2158 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 2159 ATH6KL_MAX_WOW_LISTEN_INTL, 2160 0); 2161 if (ret) 2162 return ret; 2163 2164 /* Set listen interval x 15 times as bmiss time */ 2165 bmiss_time = ATH6KL_MAX_WOW_LISTEN_INTL * 15; 2166 if (bmiss_time > ATH6KL_MAX_BMISS_TIME) 2167 bmiss_time = ATH6KL_MAX_BMISS_TIME; 2168 2169 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx, 2170 bmiss_time, 0); 2171 if (ret) 2172 return ret; 2173 2174 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 2175 0xFFFF, 0, 0xFFFF, 0, 0, 0, 2176 0, 0, 0, 0); 2177 if (ret) 2178 return ret; 2179 } 2180 2181 /* Setup own IP addr for ARP agent. */ 2182 in_dev = __in_dev_get_rtnl(vif->ndev); 2183 if (!in_dev) 2184 return 0; 2185 2186 ifa = in_dev->ifa_list; 2187 memset(&ips, 0, sizeof(ips)); 2188 2189 /* Configure IP addr only if IP address count < MAX_IP_ADDRS */ 2190 while (index < MAX_IP_ADDRS && ifa) { 2191 ips[index] = ifa->ifa_local; 2192 ifa = ifa->ifa_next; 2193 index++; 2194 } 2195 2196 if (ifa) { 2197 ath6kl_err("total IP addr count is exceeding fw limit\n"); 2198 return -EINVAL; 2199 } 2200 2201 ret = ath6kl_wmi_set_ip_cmd(ar->wmi, vif->fw_vif_idx, ips[0], ips[1]); 2202 if (ret) { 2203 ath6kl_err("fail to setup ip for arp agent\n"); 2204 return ret; 2205 } 2206 2207 return ret; 2208 } 2209 2210 static int ath6kl_wow_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow) 2211 { 2212 struct ath6kl_vif *first_vif, *vif; 2213 int ret = 0; 2214 u32 filter = 0; 2215 bool connected = false; 2216 2217 /* enter / leave wow suspend on first vif always */ 2218 first_vif = ath6kl_vif_first(ar); 2219 if (WARN_ON(unlikely(!first_vif)) || 2220 !ath6kl_cfg80211_ready(first_vif)) 2221 return -EIO; 2222 2223 if (wow && (wow->n_patterns > WOW_MAX_FILTERS_PER_LIST)) 2224 return -EINVAL; 2225 2226 /* install filters for each connected vif */ 2227 spin_lock_bh(&ar->list_lock); 2228 list_for_each_entry(vif, &ar->vif_list, list) { 2229 if (!test_bit(CONNECTED, &vif->flags) || 2230 !ath6kl_cfg80211_ready(vif)) 2231 continue; 2232 connected = true; 2233 2234 ret = ath6kl_wow_suspend_vif(vif, wow, &filter); 2235 if (ret) 2236 break; 2237 } 2238 spin_unlock_bh(&ar->list_lock); 2239 2240 if (!connected) 2241 return -ENOTCONN; 2242 else if (ret) 2243 return ret; 2244 2245 ar->state = ATH6KL_STATE_SUSPENDING; 2246 2247 ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, first_vif->fw_vif_idx, 2248 ATH6KL_WOW_MODE_ENABLE, 2249 filter, 2250 WOW_HOST_REQ_DELAY); 2251 if (ret) 2252 return ret; 2253 2254 return ath6kl_cfg80211_host_sleep(ar, first_vif); 2255 } 2256 2257 static int ath6kl_wow_resume_vif(struct ath6kl_vif *vif) 2258 { 2259 struct ath6kl *ar = vif->ar; 2260 int ret; 2261 2262 if (vif->nw_type != AP_NETWORK) { 2263 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 2264 0, 0, 0, 0, 0, 0, 3, 0, 0, 0); 2265 if (ret) 2266 return ret; 2267 2268 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 2269 vif->listen_intvl_t, 0); 2270 if (ret) 2271 return ret; 2272 2273 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx, 2274 vif->bmiss_time_t, 0); 2275 if (ret) 2276 return ret; 2277 } 2278 2279 if (!test_bit(NETDEV_MCAST_ALL_OFF, &vif->flags) && 2280 test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER, 2281 ar->fw_capabilities)) { 2282 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, 2283 vif->fw_vif_idx, true); 2284 if (ret) 2285 return ret; 2286 } 2287 2288 netif_wake_queue(vif->ndev); 2289 2290 return 0; 2291 } 2292 2293 static int ath6kl_wow_resume(struct ath6kl *ar) 2294 { 2295 struct ath6kl_vif *vif; 2296 int ret; 2297 2298 vif = ath6kl_vif_first(ar); 2299 if (WARN_ON(unlikely(!vif)) || 2300 !ath6kl_cfg80211_ready(vif)) 2301 return -EIO; 2302 2303 ar->state = ATH6KL_STATE_RESUMING; 2304 2305 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx, 2306 ATH6KL_HOST_MODE_AWAKE); 2307 if (ret) { 2308 ath6kl_warn("Failed to configure host sleep mode for wow resume: %d\n", 2309 ret); 2310 goto cleanup; 2311 } 2312 2313 spin_lock_bh(&ar->list_lock); 2314 list_for_each_entry(vif, &ar->vif_list, list) { 2315 if (!test_bit(CONNECTED, &vif->flags) || 2316 !ath6kl_cfg80211_ready(vif)) 2317 continue; 2318 ret = ath6kl_wow_resume_vif(vif); 2319 if (ret) 2320 break; 2321 } 2322 spin_unlock_bh(&ar->list_lock); 2323 2324 if (ret) 2325 goto cleanup; 2326 2327 ar->state = ATH6KL_STATE_ON; 2328 return 0; 2329 2330 cleanup: 2331 ar->state = ATH6KL_STATE_WOW; 2332 return ret; 2333 } 2334 2335 static int ath6kl_cfg80211_deepsleep_suspend(struct ath6kl *ar) 2336 { 2337 struct ath6kl_vif *vif; 2338 int ret; 2339 2340 vif = ath6kl_vif_first(ar); 2341 if (!vif) 2342 return -EIO; 2343 2344 if (!test_bit(WMI_READY, &ar->flag)) { 2345 ath6kl_err("deepsleep failed as wmi is not ready\n"); 2346 return -EIO; 2347 } 2348 2349 ath6kl_cfg80211_stop_all(ar); 2350 2351 /* Save the current power mode before enabling power save */ 2352 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode; 2353 2354 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER); 2355 if (ret) 2356 return ret; 2357 2358 /* Disable WOW mode */ 2359 ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx, 2360 ATH6KL_WOW_MODE_DISABLE, 2361 0, 0); 2362 if (ret) 2363 return ret; 2364 2365 /* Flush all non control pkts in TX path */ 2366 ath6kl_tx_data_cleanup(ar); 2367 2368 ret = ath6kl_cfg80211_host_sleep(ar, vif); 2369 if (ret) 2370 return ret; 2371 2372 return 0; 2373 } 2374 2375 static int ath6kl_cfg80211_deepsleep_resume(struct ath6kl *ar) 2376 { 2377 struct ath6kl_vif *vif; 2378 int ret; 2379 2380 vif = ath6kl_vif_first(ar); 2381 2382 if (!vif) 2383 return -EIO; 2384 2385 if (ar->wmi->pwr_mode != ar->wmi->saved_pwr_mode) { 2386 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0, 2387 ar->wmi->saved_pwr_mode); 2388 if (ret) 2389 return ret; 2390 } 2391 2392 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx, 2393 ATH6KL_HOST_MODE_AWAKE); 2394 if (ret) 2395 return ret; 2396 2397 ar->state = ATH6KL_STATE_ON; 2398 2399 /* Reset scan parameter to default values */ 2400 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 2401 0, 0, 0, 0, 0, 0, 3, 0, 0, 0); 2402 if (ret) 2403 return ret; 2404 2405 return 0; 2406 } 2407 2408 int ath6kl_cfg80211_suspend(struct ath6kl *ar, 2409 enum ath6kl_cfg_suspend_mode mode, 2410 struct cfg80211_wowlan *wow) 2411 { 2412 struct ath6kl_vif *vif; 2413 enum ath6kl_state prev_state; 2414 int ret; 2415 2416 switch (mode) { 2417 case ATH6KL_CFG_SUSPEND_WOW: 2418 2419 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode suspend\n"); 2420 2421 /* Flush all non control pkts in TX path */ 2422 ath6kl_tx_data_cleanup(ar); 2423 2424 prev_state = ar->state; 2425 2426 ret = ath6kl_wow_suspend(ar, wow); 2427 if (ret) { 2428 ar->state = prev_state; 2429 return ret; 2430 } 2431 2432 ar->state = ATH6KL_STATE_WOW; 2433 break; 2434 2435 case ATH6KL_CFG_SUSPEND_DEEPSLEEP: 2436 2437 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep suspend\n"); 2438 2439 ret = ath6kl_cfg80211_deepsleep_suspend(ar); 2440 if (ret) { 2441 ath6kl_err("deepsleep suspend failed: %d\n", ret); 2442 return ret; 2443 } 2444 2445 ar->state = ATH6KL_STATE_DEEPSLEEP; 2446 2447 break; 2448 2449 case ATH6KL_CFG_SUSPEND_CUTPOWER: 2450 2451 ath6kl_cfg80211_stop_all(ar); 2452 2453 if (ar->state == ATH6KL_STATE_OFF) { 2454 ath6kl_dbg(ATH6KL_DBG_SUSPEND, 2455 "suspend hw off, no action for cutpower\n"); 2456 break; 2457 } 2458 2459 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "suspend cutting power\n"); 2460 2461 ret = ath6kl_init_hw_stop(ar); 2462 if (ret) { 2463 ath6kl_warn("failed to stop hw during suspend: %d\n", 2464 ret); 2465 } 2466 2467 ar->state = ATH6KL_STATE_CUTPOWER; 2468 2469 break; 2470 2471 default: 2472 break; 2473 } 2474 2475 list_for_each_entry(vif, &ar->vif_list, list) 2476 ath6kl_cfg80211_scan_complete_event(vif, true); 2477 2478 return 0; 2479 } 2480 EXPORT_SYMBOL(ath6kl_cfg80211_suspend); 2481 2482 int ath6kl_cfg80211_resume(struct ath6kl *ar) 2483 { 2484 int ret; 2485 2486 switch (ar->state) { 2487 case ATH6KL_STATE_WOW: 2488 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode resume\n"); 2489 2490 ret = ath6kl_wow_resume(ar); 2491 if (ret) { 2492 ath6kl_warn("wow mode resume failed: %d\n", ret); 2493 return ret; 2494 } 2495 2496 break; 2497 2498 case ATH6KL_STATE_DEEPSLEEP: 2499 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep resume\n"); 2500 2501 ret = ath6kl_cfg80211_deepsleep_resume(ar); 2502 if (ret) { 2503 ath6kl_warn("deep sleep resume failed: %d\n", ret); 2504 return ret; 2505 } 2506 break; 2507 2508 case ATH6KL_STATE_CUTPOWER: 2509 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "resume restoring power\n"); 2510 2511 ret = ath6kl_init_hw_start(ar); 2512 if (ret) { 2513 ath6kl_warn("Failed to boot hw in resume: %d\n", ret); 2514 return ret; 2515 } 2516 break; 2517 2518 default: 2519 break; 2520 } 2521 2522 return 0; 2523 } 2524 EXPORT_SYMBOL(ath6kl_cfg80211_resume); 2525 2526 #ifdef CONFIG_PM 2527 2528 /* hif layer decides what suspend mode to use */ 2529 static int __ath6kl_cfg80211_suspend(struct wiphy *wiphy, 2530 struct cfg80211_wowlan *wow) 2531 { 2532 struct ath6kl *ar = wiphy_priv(wiphy); 2533 2534 ath6kl_recovery_suspend(ar); 2535 2536 return ath6kl_hif_suspend(ar, wow); 2537 } 2538 2539 static int __ath6kl_cfg80211_resume(struct wiphy *wiphy) 2540 { 2541 struct ath6kl *ar = wiphy_priv(wiphy); 2542 int err; 2543 2544 err = ath6kl_hif_resume(ar); 2545 if (err) 2546 return err; 2547 2548 ath6kl_recovery_resume(ar); 2549 2550 return 0; 2551 } 2552 2553 /* 2554 * FIXME: WOW suspend mode is selected if the host sdio controller supports 2555 * both sdio irq wake up and keep power. The target pulls sdio data line to 2556 * wake up the host when WOW pattern matches. This causes sdio irq handler 2557 * is being called in the host side which internally hits ath6kl's RX path. 2558 * 2559 * Since sdio interrupt is not disabled, RX path executes even before 2560 * the host executes the actual resume operation from PM module. 2561 * 2562 * In the current scenario, WOW resume should happen before start processing 2563 * any data from the target. So It's required to perform WOW resume in RX path. 2564 * Ideally we should perform WOW resume only in the actual platform 2565 * resume path. This area needs bit rework to avoid WOW resume in RX path. 2566 * 2567 * ath6kl_check_wow_status() is called from ath6kl_rx(). 2568 */ 2569 void ath6kl_check_wow_status(struct ath6kl *ar) 2570 { 2571 if (ar->state == ATH6KL_STATE_SUSPENDING) 2572 return; 2573 2574 if (ar->state == ATH6KL_STATE_WOW) 2575 ath6kl_cfg80211_resume(ar); 2576 } 2577 2578 #else 2579 2580 void ath6kl_check_wow_status(struct ath6kl *ar) 2581 { 2582 } 2583 #endif 2584 2585 static int ath6kl_set_htcap(struct ath6kl_vif *vif, enum ieee80211_band band, 2586 bool ht_enable) 2587 { 2588 struct ath6kl_htcap *htcap = &vif->htcap[band]; 2589 2590 if (htcap->ht_enable == ht_enable) 2591 return 0; 2592 2593 if (ht_enable) { 2594 /* Set default ht capabilities */ 2595 htcap->ht_enable = true; 2596 htcap->cap_info = (band == IEEE80211_BAND_2GHZ) ? 2597 ath6kl_g_htcap : ath6kl_a_htcap; 2598 htcap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K; 2599 } else /* Disable ht */ 2600 memset(htcap, 0, sizeof(*htcap)); 2601 2602 return ath6kl_wmi_set_htcap_cmd(vif->ar->wmi, vif->fw_vif_idx, 2603 band, htcap); 2604 } 2605 2606 static int ath6kl_restore_htcap(struct ath6kl_vif *vif) 2607 { 2608 struct wiphy *wiphy = vif->ar->wiphy; 2609 int band, ret = 0; 2610 2611 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 2612 if (!wiphy->bands[band]) 2613 continue; 2614 2615 ret = ath6kl_set_htcap(vif, band, 2616 wiphy->bands[band]->ht_cap.ht_supported); 2617 if (ret) 2618 return ret; 2619 } 2620 2621 return ret; 2622 } 2623 2624 static bool ath6kl_is_p2p_ie(const u8 *pos) 2625 { 2626 return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 && 2627 pos[2] == 0x50 && pos[3] == 0x6f && 2628 pos[4] == 0x9a && pos[5] == 0x09; 2629 } 2630 2631 static int ath6kl_set_ap_probe_resp_ies(struct ath6kl_vif *vif, 2632 const u8 *ies, size_t ies_len) 2633 { 2634 struct ath6kl *ar = vif->ar; 2635 const u8 *pos; 2636 u8 *buf = NULL; 2637 size_t len = 0; 2638 int ret; 2639 2640 /* 2641 * Filter out P2P IE(s) since they will be included depending on 2642 * the Probe Request frame in ath6kl_send_go_probe_resp(). 2643 */ 2644 2645 if (ies && ies_len) { 2646 buf = kmalloc(ies_len, GFP_KERNEL); 2647 if (buf == NULL) 2648 return -ENOMEM; 2649 pos = ies; 2650 while (pos + 1 < ies + ies_len) { 2651 if (pos + 2 + pos[1] > ies + ies_len) 2652 break; 2653 if (!ath6kl_is_p2p_ie(pos)) { 2654 memcpy(buf + len, pos, 2 + pos[1]); 2655 len += 2 + pos[1]; 2656 } 2657 pos += 2 + pos[1]; 2658 } 2659 } 2660 2661 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx, 2662 WMI_FRAME_PROBE_RESP, buf, len); 2663 kfree(buf); 2664 return ret; 2665 } 2666 2667 static int ath6kl_set_ies(struct ath6kl_vif *vif, 2668 struct cfg80211_beacon_data *info) 2669 { 2670 struct ath6kl *ar = vif->ar; 2671 int res; 2672 2673 /* this also clears IE in fw if it's not set */ 2674 res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx, 2675 WMI_FRAME_BEACON, 2676 info->beacon_ies, 2677 info->beacon_ies_len); 2678 if (res) 2679 return res; 2680 2681 /* this also clears IE in fw if it's not set */ 2682 res = ath6kl_set_ap_probe_resp_ies(vif, info->proberesp_ies, 2683 info->proberesp_ies_len); 2684 if (res) 2685 return res; 2686 2687 /* this also clears IE in fw if it's not set */ 2688 res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx, 2689 WMI_FRAME_ASSOC_RESP, 2690 info->assocresp_ies, 2691 info->assocresp_ies_len); 2692 if (res) 2693 return res; 2694 2695 return 0; 2696 } 2697 2698 static int ath6kl_get_rsn_capab(struct cfg80211_beacon_data *beacon, 2699 u8 *rsn_capab) 2700 { 2701 const u8 *rsn_ie; 2702 size_t rsn_ie_len; 2703 u16 cnt; 2704 2705 if (!beacon->tail) 2706 return -EINVAL; 2707 2708 rsn_ie = cfg80211_find_ie(WLAN_EID_RSN, beacon->tail, beacon->tail_len); 2709 if (!rsn_ie) 2710 return -EINVAL; 2711 2712 rsn_ie_len = *(rsn_ie + 1); 2713 /* skip element id and length */ 2714 rsn_ie += 2; 2715 2716 /* skip version */ 2717 if (rsn_ie_len < 2) 2718 return -EINVAL; 2719 rsn_ie += 2; 2720 rsn_ie_len -= 2; 2721 2722 /* skip group cipher suite */ 2723 if (rsn_ie_len < 4) 2724 return 0; 2725 rsn_ie += 4; 2726 rsn_ie_len -= 4; 2727 2728 /* skip pairwise cipher suite */ 2729 if (rsn_ie_len < 2) 2730 return 0; 2731 cnt = get_unaligned_le16(rsn_ie); 2732 rsn_ie += (2 + cnt * 4); 2733 rsn_ie_len -= (2 + cnt * 4); 2734 2735 /* skip akm suite */ 2736 if (rsn_ie_len < 2) 2737 return 0; 2738 cnt = get_unaligned_le16(rsn_ie); 2739 rsn_ie += (2 + cnt * 4); 2740 rsn_ie_len -= (2 + cnt * 4); 2741 2742 if (rsn_ie_len < 2) 2743 return 0; 2744 2745 memcpy(rsn_capab, rsn_ie, 2); 2746 2747 return 0; 2748 } 2749 2750 static int ath6kl_start_ap(struct wiphy *wiphy, struct net_device *dev, 2751 struct cfg80211_ap_settings *info) 2752 { 2753 struct ath6kl *ar = ath6kl_priv(dev); 2754 struct ath6kl_vif *vif = netdev_priv(dev); 2755 struct ieee80211_mgmt *mgmt; 2756 bool hidden = false; 2757 u8 *ies; 2758 int ies_len; 2759 struct wmi_connect_cmd p; 2760 int res; 2761 int i, ret; 2762 u16 rsn_capab = 0; 2763 int inactivity_timeout = 0; 2764 2765 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s:\n", __func__); 2766 2767 if (!ath6kl_cfg80211_ready(vif)) 2768 return -EIO; 2769 2770 if (vif->next_mode != AP_NETWORK) 2771 return -EOPNOTSUPP; 2772 2773 res = ath6kl_set_ies(vif, &info->beacon); 2774 2775 ar->ap_mode_bkey.valid = false; 2776 2777 ret = ath6kl_wmi_ap_set_beacon_intvl_cmd(ar->wmi, vif->fw_vif_idx, 2778 info->beacon_interval); 2779 2780 if (ret) 2781 ath6kl_warn("Failed to set beacon interval: %d\n", ret); 2782 2783 ret = ath6kl_wmi_ap_set_dtim_cmd(ar->wmi, vif->fw_vif_idx, 2784 info->dtim_period); 2785 2786 /* ignore error, just print a warning and continue normally */ 2787 if (ret) 2788 ath6kl_warn("Failed to set dtim_period in beacon: %d\n", ret); 2789 2790 if (info->beacon.head == NULL) 2791 return -EINVAL; 2792 mgmt = (struct ieee80211_mgmt *) info->beacon.head; 2793 ies = mgmt->u.beacon.variable; 2794 if (ies > info->beacon.head + info->beacon.head_len) 2795 return -EINVAL; 2796 ies_len = info->beacon.head + info->beacon.head_len - ies; 2797 2798 if (info->ssid == NULL) 2799 return -EINVAL; 2800 memcpy(vif->ssid, info->ssid, info->ssid_len); 2801 vif->ssid_len = info->ssid_len; 2802 if (info->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE) 2803 hidden = true; 2804 2805 res = ath6kl_wmi_ap_hidden_ssid(ar->wmi, vif->fw_vif_idx, hidden); 2806 if (res) 2807 return res; 2808 2809 ret = ath6kl_set_auth_type(vif, info->auth_type); 2810 if (ret) 2811 return ret; 2812 2813 memset(&p, 0, sizeof(p)); 2814 2815 for (i = 0; i < info->crypto.n_akm_suites; i++) { 2816 switch (info->crypto.akm_suites[i]) { 2817 case WLAN_AKM_SUITE_8021X: 2818 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1) 2819 p.auth_mode |= WPA_AUTH; 2820 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2) 2821 p.auth_mode |= WPA2_AUTH; 2822 break; 2823 case WLAN_AKM_SUITE_PSK: 2824 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1) 2825 p.auth_mode |= WPA_PSK_AUTH; 2826 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2) 2827 p.auth_mode |= WPA2_PSK_AUTH; 2828 break; 2829 } 2830 } 2831 if (p.auth_mode == 0) 2832 p.auth_mode = NONE_AUTH; 2833 vif->auth_mode = p.auth_mode; 2834 2835 for (i = 0; i < info->crypto.n_ciphers_pairwise; i++) { 2836 switch (info->crypto.ciphers_pairwise[i]) { 2837 case WLAN_CIPHER_SUITE_WEP40: 2838 case WLAN_CIPHER_SUITE_WEP104: 2839 p.prwise_crypto_type |= WEP_CRYPT; 2840 break; 2841 case WLAN_CIPHER_SUITE_TKIP: 2842 p.prwise_crypto_type |= TKIP_CRYPT; 2843 break; 2844 case WLAN_CIPHER_SUITE_CCMP: 2845 p.prwise_crypto_type |= AES_CRYPT; 2846 break; 2847 case WLAN_CIPHER_SUITE_SMS4: 2848 p.prwise_crypto_type |= WAPI_CRYPT; 2849 break; 2850 } 2851 } 2852 if (p.prwise_crypto_type == 0) { 2853 p.prwise_crypto_type = NONE_CRYPT; 2854 ath6kl_set_cipher(vif, 0, true); 2855 } else if (info->crypto.n_ciphers_pairwise == 1) 2856 ath6kl_set_cipher(vif, info->crypto.ciphers_pairwise[0], true); 2857 2858 switch (info->crypto.cipher_group) { 2859 case WLAN_CIPHER_SUITE_WEP40: 2860 case WLAN_CIPHER_SUITE_WEP104: 2861 p.grp_crypto_type = WEP_CRYPT; 2862 break; 2863 case WLAN_CIPHER_SUITE_TKIP: 2864 p.grp_crypto_type = TKIP_CRYPT; 2865 break; 2866 case WLAN_CIPHER_SUITE_CCMP: 2867 p.grp_crypto_type = AES_CRYPT; 2868 break; 2869 case WLAN_CIPHER_SUITE_SMS4: 2870 p.grp_crypto_type = WAPI_CRYPT; 2871 break; 2872 default: 2873 p.grp_crypto_type = NONE_CRYPT; 2874 break; 2875 } 2876 ath6kl_set_cipher(vif, info->crypto.cipher_group, false); 2877 2878 p.nw_type = AP_NETWORK; 2879 vif->nw_type = vif->next_mode; 2880 2881 p.ssid_len = vif->ssid_len; 2882 memcpy(p.ssid, vif->ssid, vif->ssid_len); 2883 p.dot11_auth_mode = vif->dot11_auth_mode; 2884 p.ch = cpu_to_le16(info->chandef.chan->center_freq); 2885 2886 /* Enable uAPSD support by default */ 2887 res = ath6kl_wmi_ap_set_apsd(ar->wmi, vif->fw_vif_idx, true); 2888 if (res < 0) 2889 return res; 2890 2891 if (vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) { 2892 p.nw_subtype = SUBTYPE_P2PGO; 2893 } else { 2894 /* 2895 * Due to firmware limitation, it is not possible to 2896 * do P2P mgmt operations in AP mode 2897 */ 2898 p.nw_subtype = SUBTYPE_NONE; 2899 } 2900 2901 if (info->inactivity_timeout) { 2902 2903 inactivity_timeout = info->inactivity_timeout; 2904 2905 if (ar->hw.flags & ATH6KL_HW_AP_INACTIVITY_MINS) 2906 inactivity_timeout = DIV_ROUND_UP(inactivity_timeout, 2907 60); 2908 2909 res = ath6kl_wmi_set_inact_period(ar->wmi, vif->fw_vif_idx, 2910 inactivity_timeout); 2911 if (res < 0) 2912 return res; 2913 } 2914 2915 if (ath6kl_set_htcap(vif, info->chandef.chan->band, 2916 cfg80211_get_chandef_type(&info->chandef) 2917 != NL80211_CHAN_NO_HT)) 2918 return -EIO; 2919 2920 /* 2921 * Get the PTKSA replay counter in the RSN IE. Supplicant 2922 * will use the RSN IE in M3 message and firmware has to 2923 * advertise the same in beacon/probe response. Send 2924 * the complete RSN IE capability field to firmware 2925 */ 2926 if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *) &rsn_capab) && 2927 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE, 2928 ar->fw_capabilities)) { 2929 res = ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx, 2930 WLAN_EID_RSN, WMI_RSN_IE_CAPB, 2931 (const u8 *) &rsn_capab, 2932 sizeof(rsn_capab)); 2933 vif->rsn_capab = rsn_capab; 2934 if (res < 0) 2935 return res; 2936 } 2937 2938 memcpy(&vif->profile, &p, sizeof(p)); 2939 res = ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx, &p); 2940 if (res < 0) 2941 return res; 2942 2943 return 0; 2944 } 2945 2946 static int ath6kl_change_beacon(struct wiphy *wiphy, struct net_device *dev, 2947 struct cfg80211_beacon_data *beacon) 2948 { 2949 struct ath6kl_vif *vif = netdev_priv(dev); 2950 2951 if (!ath6kl_cfg80211_ready(vif)) 2952 return -EIO; 2953 2954 if (vif->next_mode != AP_NETWORK) 2955 return -EOPNOTSUPP; 2956 2957 return ath6kl_set_ies(vif, beacon); 2958 } 2959 2960 static int ath6kl_stop_ap(struct wiphy *wiphy, struct net_device *dev) 2961 { 2962 struct ath6kl *ar = ath6kl_priv(dev); 2963 struct ath6kl_vif *vif = netdev_priv(dev); 2964 2965 if (vif->nw_type != AP_NETWORK) 2966 return -EOPNOTSUPP; 2967 if (!test_bit(CONNECTED, &vif->flags)) 2968 return -ENOTCONN; 2969 2970 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx); 2971 clear_bit(CONNECTED, &vif->flags); 2972 2973 /* Restore ht setting in firmware */ 2974 return ath6kl_restore_htcap(vif); 2975 } 2976 2977 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 2978 2979 static int ath6kl_del_station(struct wiphy *wiphy, struct net_device *dev, 2980 u8 *mac) 2981 { 2982 struct ath6kl *ar = ath6kl_priv(dev); 2983 struct ath6kl_vif *vif = netdev_priv(dev); 2984 const u8 *addr = mac ? mac : bcast_addr; 2985 2986 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx, WMI_AP_DEAUTH, 2987 addr, WLAN_REASON_PREV_AUTH_NOT_VALID); 2988 } 2989 2990 static int ath6kl_change_station(struct wiphy *wiphy, struct net_device *dev, 2991 u8 *mac, struct station_parameters *params) 2992 { 2993 struct ath6kl *ar = ath6kl_priv(dev); 2994 struct ath6kl_vif *vif = netdev_priv(dev); 2995 int err; 2996 2997 if (vif->nw_type != AP_NETWORK) 2998 return -EOPNOTSUPP; 2999 3000 err = cfg80211_check_station_change(wiphy, params, 3001 CFG80211_STA_AP_MLME_CLIENT); 3002 if (err) 3003 return err; 3004 3005 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 3006 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx, 3007 WMI_AP_MLME_AUTHORIZE, mac, 0); 3008 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx, 3009 WMI_AP_MLME_UNAUTHORIZE, mac, 0); 3010 } 3011 3012 static int ath6kl_remain_on_channel(struct wiphy *wiphy, 3013 struct wireless_dev *wdev, 3014 struct ieee80211_channel *chan, 3015 unsigned int duration, 3016 u64 *cookie) 3017 { 3018 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev); 3019 struct ath6kl *ar = ath6kl_priv(vif->ndev); 3020 u32 id; 3021 3022 /* TODO: if already pending or ongoing remain-on-channel, 3023 * return -EBUSY */ 3024 id = ++vif->last_roc_id; 3025 if (id == 0) { 3026 /* Do not use 0 as the cookie value */ 3027 id = ++vif->last_roc_id; 3028 } 3029 *cookie = id; 3030 3031 return ath6kl_wmi_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx, 3032 chan->center_freq, duration); 3033 } 3034 3035 static int ath6kl_cancel_remain_on_channel(struct wiphy *wiphy, 3036 struct wireless_dev *wdev, 3037 u64 cookie) 3038 { 3039 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev); 3040 struct ath6kl *ar = ath6kl_priv(vif->ndev); 3041 3042 if (cookie != vif->last_roc_id) 3043 return -ENOENT; 3044 vif->last_cancel_roc_id = cookie; 3045 3046 return ath6kl_wmi_cancel_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx); 3047 } 3048 3049 static int ath6kl_send_go_probe_resp(struct ath6kl_vif *vif, 3050 const u8 *buf, size_t len, 3051 unsigned int freq) 3052 { 3053 struct ath6kl *ar = vif->ar; 3054 const u8 *pos; 3055 u8 *p2p; 3056 int p2p_len; 3057 int ret; 3058 const struct ieee80211_mgmt *mgmt; 3059 3060 mgmt = (const struct ieee80211_mgmt *) buf; 3061 3062 /* Include P2P IE(s) from the frame generated in user space. */ 3063 3064 p2p = kmalloc(len, GFP_KERNEL); 3065 if (p2p == NULL) 3066 return -ENOMEM; 3067 p2p_len = 0; 3068 3069 pos = mgmt->u.probe_resp.variable; 3070 while (pos + 1 < buf + len) { 3071 if (pos + 2 + pos[1] > buf + len) 3072 break; 3073 if (ath6kl_is_p2p_ie(pos)) { 3074 memcpy(p2p + p2p_len, pos, 2 + pos[1]); 3075 p2p_len += 2 + pos[1]; 3076 } 3077 pos += 2 + pos[1]; 3078 } 3079 3080 ret = ath6kl_wmi_send_probe_response_cmd(ar->wmi, vif->fw_vif_idx, freq, 3081 mgmt->da, p2p, p2p_len); 3082 kfree(p2p); 3083 return ret; 3084 } 3085 3086 static bool ath6kl_mgmt_powersave_ap(struct ath6kl_vif *vif, 3087 u32 id, 3088 u32 freq, 3089 u32 wait, 3090 const u8 *buf, 3091 size_t len, 3092 bool *more_data, 3093 bool no_cck) 3094 { 3095 struct ieee80211_mgmt *mgmt; 3096 struct ath6kl_sta *conn; 3097 bool is_psq_empty = false; 3098 struct ath6kl_mgmt_buff *mgmt_buf; 3099 size_t mgmt_buf_size; 3100 struct ath6kl *ar = vif->ar; 3101 3102 mgmt = (struct ieee80211_mgmt *) buf; 3103 if (is_multicast_ether_addr(mgmt->da)) 3104 return false; 3105 3106 conn = ath6kl_find_sta(vif, mgmt->da); 3107 if (!conn) 3108 return false; 3109 3110 if (conn->sta_flags & STA_PS_SLEEP) { 3111 if (!(conn->sta_flags & STA_PS_POLLED)) { 3112 /* Queue the frames if the STA is sleeping */ 3113 mgmt_buf_size = len + sizeof(struct ath6kl_mgmt_buff); 3114 mgmt_buf = kmalloc(mgmt_buf_size, GFP_KERNEL); 3115 if (!mgmt_buf) 3116 return false; 3117 3118 INIT_LIST_HEAD(&mgmt_buf->list); 3119 mgmt_buf->id = id; 3120 mgmt_buf->freq = freq; 3121 mgmt_buf->wait = wait; 3122 mgmt_buf->len = len; 3123 mgmt_buf->no_cck = no_cck; 3124 memcpy(mgmt_buf->buf, buf, len); 3125 spin_lock_bh(&conn->psq_lock); 3126 is_psq_empty = skb_queue_empty(&conn->psq) && 3127 (conn->mgmt_psq_len == 0); 3128 list_add_tail(&mgmt_buf->list, &conn->mgmt_psq); 3129 conn->mgmt_psq_len++; 3130 spin_unlock_bh(&conn->psq_lock); 3131 3132 /* 3133 * If this is the first pkt getting queued 3134 * for this STA, update the PVB for this 3135 * STA. 3136 */ 3137 if (is_psq_empty) 3138 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, 3139 conn->aid, 1); 3140 return true; 3141 } 3142 3143 /* 3144 * This tx is because of a PsPoll. 3145 * Determine if MoreData bit has to be set. 3146 */ 3147 spin_lock_bh(&conn->psq_lock); 3148 if (!skb_queue_empty(&conn->psq) || (conn->mgmt_psq_len != 0)) 3149 *more_data = true; 3150 spin_unlock_bh(&conn->psq_lock); 3151 } 3152 3153 return false; 3154 } 3155 3156 /* Check if SSID length is greater than DIRECT- */ 3157 static bool ath6kl_is_p2p_go_ssid(const u8 *buf, size_t len) 3158 { 3159 const struct ieee80211_mgmt *mgmt; 3160 mgmt = (const struct ieee80211_mgmt *) buf; 3161 3162 /* variable[1] contains the SSID tag length */ 3163 if (buf + len >= &mgmt->u.probe_resp.variable[1] && 3164 (mgmt->u.probe_resp.variable[1] > P2P_WILDCARD_SSID_LEN)) { 3165 return true; 3166 } 3167 3168 return false; 3169 } 3170 3171 static int ath6kl_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 3172 struct ieee80211_channel *chan, bool offchan, 3173 unsigned int wait, const u8 *buf, size_t len, 3174 bool no_cck, bool dont_wait_for_ack, u64 *cookie) 3175 { 3176 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev); 3177 struct ath6kl *ar = ath6kl_priv(vif->ndev); 3178 u32 id, freq; 3179 const struct ieee80211_mgmt *mgmt; 3180 bool more_data, queued; 3181 3182 /* default to the current channel, but use the one specified as argument 3183 * if any 3184 */ 3185 freq = vif->ch_hint; 3186 if (chan) 3187 freq = chan->center_freq; 3188 3189 /* never send freq zero to the firmware */ 3190 if (WARN_ON(freq == 0)) 3191 return -EINVAL; 3192 3193 mgmt = (const struct ieee80211_mgmt *) buf; 3194 if (vif->nw_type == AP_NETWORK && test_bit(CONNECTED, &vif->flags) && 3195 ieee80211_is_probe_resp(mgmt->frame_control) && 3196 ath6kl_is_p2p_go_ssid(buf, len)) { 3197 /* 3198 * Send Probe Response frame in GO mode using a separate WMI 3199 * command to allow the target to fill in the generic IEs. 3200 */ 3201 *cookie = 0; /* TX status not supported */ 3202 return ath6kl_send_go_probe_resp(vif, buf, len, freq); 3203 } 3204 3205 id = vif->send_action_id++; 3206 if (id == 0) { 3207 /* 3208 * 0 is a reserved value in the WMI command and shall not be 3209 * used for the command. 3210 */ 3211 id = vif->send_action_id++; 3212 } 3213 3214 *cookie = id; 3215 3216 /* AP mode Power saving processing */ 3217 if (vif->nw_type == AP_NETWORK) { 3218 queued = ath6kl_mgmt_powersave_ap(vif, id, freq, wait, buf, len, 3219 &more_data, no_cck); 3220 if (queued) 3221 return 0; 3222 } 3223 3224 return ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, id, freq, 3225 wait, buf, len, no_cck); 3226 } 3227 3228 static void ath6kl_mgmt_frame_register(struct wiphy *wiphy, 3229 struct wireless_dev *wdev, 3230 u16 frame_type, bool reg) 3231 { 3232 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev); 3233 3234 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: frame_type=0x%x reg=%d\n", 3235 __func__, frame_type, reg); 3236 if (frame_type == IEEE80211_STYPE_PROBE_REQ) { 3237 /* 3238 * Note: This notification callback is not allowed to sleep, so 3239 * we cannot send WMI_PROBE_REQ_REPORT_CMD here. Instead, we 3240 * hardcode target to report Probe Request frames all the time. 3241 */ 3242 vif->probe_req_report = reg; 3243 } 3244 } 3245 3246 static int ath6kl_cfg80211_sscan_start(struct wiphy *wiphy, 3247 struct net_device *dev, 3248 struct cfg80211_sched_scan_request *request) 3249 { 3250 struct ath6kl *ar = ath6kl_priv(dev); 3251 struct ath6kl_vif *vif = netdev_priv(dev); 3252 u16 interval; 3253 int ret, rssi_thold; 3254 3255 if (ar->state != ATH6KL_STATE_ON) 3256 return -EIO; 3257 3258 if (vif->sme_state != SME_DISCONNECTED) 3259 return -EBUSY; 3260 3261 ath6kl_cfg80211_scan_complete_event(vif, true); 3262 3263 ret = ath6kl_set_probed_ssids(ar, vif, request->ssids, 3264 request->n_ssids, 3265 request->match_sets, 3266 request->n_match_sets); 3267 if (ret < 0) 3268 return ret; 3269 3270 if (!request->n_match_sets) { 3271 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 3272 ALL_BSS_FILTER, 0); 3273 if (ret < 0) 3274 return ret; 3275 } else { 3276 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 3277 MATCHED_SSID_FILTER, 0); 3278 if (ret < 0) 3279 return ret; 3280 } 3281 3282 if (test_bit(ATH6KL_FW_CAPABILITY_RSSI_SCAN_THOLD, 3283 ar->fw_capabilities)) { 3284 if (request->rssi_thold <= NL80211_SCAN_RSSI_THOLD_OFF) 3285 rssi_thold = 0; 3286 else if (request->rssi_thold < -127) 3287 rssi_thold = -127; 3288 else 3289 rssi_thold = request->rssi_thold; 3290 3291 ret = ath6kl_wmi_set_rssi_filter_cmd(ar->wmi, vif->fw_vif_idx, 3292 rssi_thold); 3293 if (ret) { 3294 ath6kl_err("failed to set RSSI threshold for scan\n"); 3295 return ret; 3296 } 3297 } 3298 3299 /* fw uses seconds, also make sure that it's >0 */ 3300 interval = max_t(u16, 1, request->interval / 1000); 3301 3302 ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 3303 interval, interval, 3304 vif->bg_scan_period, 0, 0, 0, 3, 0, 0, 0); 3305 3306 /* this also clears IE in fw if it's not set */ 3307 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx, 3308 WMI_FRAME_PROBE_REQ, 3309 request->ie, request->ie_len); 3310 if (ret) { 3311 ath6kl_warn("Failed to set probe request IE for scheduled scan: %d\n", 3312 ret); 3313 return ret; 3314 } 3315 3316 ret = ath6kl_wmi_enable_sched_scan_cmd(ar->wmi, vif->fw_vif_idx, true); 3317 if (ret) 3318 return ret; 3319 3320 set_bit(SCHED_SCANNING, &vif->flags); 3321 3322 return 0; 3323 } 3324 3325 static int ath6kl_cfg80211_sscan_stop(struct wiphy *wiphy, 3326 struct net_device *dev) 3327 { 3328 struct ath6kl_vif *vif = netdev_priv(dev); 3329 bool stopped; 3330 3331 stopped = __ath6kl_cfg80211_sscan_stop(vif); 3332 3333 if (!stopped) 3334 return -EIO; 3335 3336 return 0; 3337 } 3338 3339 static int ath6kl_cfg80211_set_bitrate(struct wiphy *wiphy, 3340 struct net_device *dev, 3341 const u8 *addr, 3342 const struct cfg80211_bitrate_mask *mask) 3343 { 3344 struct ath6kl *ar = ath6kl_priv(dev); 3345 struct ath6kl_vif *vif = netdev_priv(dev); 3346 3347 return ath6kl_wmi_set_bitrate_mask(ar->wmi, vif->fw_vif_idx, 3348 mask); 3349 } 3350 3351 static int ath6kl_cfg80211_set_txe_config(struct wiphy *wiphy, 3352 struct net_device *dev, 3353 u32 rate, u32 pkts, u32 intvl) 3354 { 3355 struct ath6kl *ar = ath6kl_priv(dev); 3356 struct ath6kl_vif *vif = netdev_priv(dev); 3357 3358 if (vif->nw_type != INFRA_NETWORK || 3359 !test_bit(ATH6KL_FW_CAPABILITY_TX_ERR_NOTIFY, ar->fw_capabilities)) 3360 return -EOPNOTSUPP; 3361 3362 if (vif->sme_state != SME_CONNECTED) 3363 return -ENOTCONN; 3364 3365 /* save this since the firmware won't report the interval */ 3366 vif->txe_intvl = intvl; 3367 3368 return ath6kl_wmi_set_txe_notify(ar->wmi, vif->fw_vif_idx, 3369 rate, pkts, intvl); 3370 } 3371 3372 static const struct ieee80211_txrx_stypes 3373 ath6kl_mgmt_stypes[NUM_NL80211_IFTYPES] = { 3374 [NL80211_IFTYPE_STATION] = { 3375 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) | 3376 BIT(IEEE80211_STYPE_PROBE_RESP >> 4), 3377 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 3378 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) 3379 }, 3380 [NL80211_IFTYPE_AP] = { 3381 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) | 3382 BIT(IEEE80211_STYPE_PROBE_RESP >> 4), 3383 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 3384 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) 3385 }, 3386 [NL80211_IFTYPE_P2P_CLIENT] = { 3387 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) | 3388 BIT(IEEE80211_STYPE_PROBE_RESP >> 4), 3389 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 3390 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) 3391 }, 3392 [NL80211_IFTYPE_P2P_GO] = { 3393 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) | 3394 BIT(IEEE80211_STYPE_PROBE_RESP >> 4), 3395 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 3396 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) 3397 }, 3398 }; 3399 3400 static struct cfg80211_ops ath6kl_cfg80211_ops = { 3401 .add_virtual_intf = ath6kl_cfg80211_add_iface, 3402 .del_virtual_intf = ath6kl_cfg80211_del_iface, 3403 .change_virtual_intf = ath6kl_cfg80211_change_iface, 3404 .scan = ath6kl_cfg80211_scan, 3405 .connect = ath6kl_cfg80211_connect, 3406 .disconnect = ath6kl_cfg80211_disconnect, 3407 .add_key = ath6kl_cfg80211_add_key, 3408 .get_key = ath6kl_cfg80211_get_key, 3409 .del_key = ath6kl_cfg80211_del_key, 3410 .set_default_key = ath6kl_cfg80211_set_default_key, 3411 .set_wiphy_params = ath6kl_cfg80211_set_wiphy_params, 3412 .set_tx_power = ath6kl_cfg80211_set_txpower, 3413 .get_tx_power = ath6kl_cfg80211_get_txpower, 3414 .set_power_mgmt = ath6kl_cfg80211_set_power_mgmt, 3415 .join_ibss = ath6kl_cfg80211_join_ibss, 3416 .leave_ibss = ath6kl_cfg80211_leave_ibss, 3417 .get_station = ath6kl_get_station, 3418 .set_pmksa = ath6kl_set_pmksa, 3419 .del_pmksa = ath6kl_del_pmksa, 3420 .flush_pmksa = ath6kl_flush_pmksa, 3421 CFG80211_TESTMODE_CMD(ath6kl_tm_cmd) 3422 #ifdef CONFIG_PM 3423 .suspend = __ath6kl_cfg80211_suspend, 3424 .resume = __ath6kl_cfg80211_resume, 3425 #endif 3426 .start_ap = ath6kl_start_ap, 3427 .change_beacon = ath6kl_change_beacon, 3428 .stop_ap = ath6kl_stop_ap, 3429 .del_station = ath6kl_del_station, 3430 .change_station = ath6kl_change_station, 3431 .remain_on_channel = ath6kl_remain_on_channel, 3432 .cancel_remain_on_channel = ath6kl_cancel_remain_on_channel, 3433 .mgmt_tx = ath6kl_mgmt_tx, 3434 .mgmt_frame_register = ath6kl_mgmt_frame_register, 3435 .sched_scan_start = ath6kl_cfg80211_sscan_start, 3436 .sched_scan_stop = ath6kl_cfg80211_sscan_stop, 3437 .set_bitrate_mask = ath6kl_cfg80211_set_bitrate, 3438 .set_cqm_txe_config = ath6kl_cfg80211_set_txe_config, 3439 }; 3440 3441 void ath6kl_cfg80211_stop(struct ath6kl_vif *vif) 3442 { 3443 ath6kl_cfg80211_sscan_disable(vif); 3444 3445 switch (vif->sme_state) { 3446 case SME_DISCONNECTED: 3447 break; 3448 case SME_CONNECTING: 3449 cfg80211_connect_result(vif->ndev, vif->bssid, NULL, 0, 3450 NULL, 0, 3451 WLAN_STATUS_UNSPECIFIED_FAILURE, 3452 GFP_KERNEL); 3453 break; 3454 case SME_CONNECTED: 3455 cfg80211_disconnected(vif->ndev, 0, NULL, 0, GFP_KERNEL); 3456 break; 3457 } 3458 3459 if (vif->ar->state != ATH6KL_STATE_RECOVERY && 3460 (test_bit(CONNECTED, &vif->flags) || 3461 test_bit(CONNECT_PEND, &vif->flags))) 3462 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx); 3463 3464 vif->sme_state = SME_DISCONNECTED; 3465 clear_bit(CONNECTED, &vif->flags); 3466 clear_bit(CONNECT_PEND, &vif->flags); 3467 3468 /* Stop netdev queues, needed during recovery */ 3469 netif_stop_queue(vif->ndev); 3470 netif_carrier_off(vif->ndev); 3471 3472 /* disable scanning */ 3473 if (vif->ar->state != ATH6KL_STATE_RECOVERY && 3474 ath6kl_wmi_scanparams_cmd(vif->ar->wmi, vif->fw_vif_idx, 0xFFFF, 3475 0, 0, 0, 0, 0, 0, 0, 0, 0) != 0) 3476 ath6kl_warn("failed to disable scan during stop\n"); 3477 3478 ath6kl_cfg80211_scan_complete_event(vif, true); 3479 } 3480 3481 void ath6kl_cfg80211_stop_all(struct ath6kl *ar) 3482 { 3483 struct ath6kl_vif *vif; 3484 3485 vif = ath6kl_vif_first(ar); 3486 if (!vif && ar->state != ATH6KL_STATE_RECOVERY) { 3487 /* save the current power mode before enabling power save */ 3488 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode; 3489 3490 if (ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER) != 0) 3491 ath6kl_warn("ath6kl_deep_sleep_enable: wmi_powermode_cmd failed\n"); 3492 return; 3493 } 3494 3495 /* 3496 * FIXME: we should take ar->list_lock to protect changes in the 3497 * vif_list, but that's not trivial to do as ath6kl_cfg80211_stop() 3498 * sleeps. 3499 */ 3500 list_for_each_entry(vif, &ar->vif_list, list) 3501 ath6kl_cfg80211_stop(vif); 3502 } 3503 3504 static void ath6kl_cfg80211_reg_notify(struct wiphy *wiphy, 3505 struct regulatory_request *request) 3506 { 3507 struct ath6kl *ar = wiphy_priv(wiphy); 3508 u32 rates[IEEE80211_NUM_BANDS]; 3509 int ret, i; 3510 3511 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 3512 "cfg reg_notify %c%c%s%s initiator %d hint_type %d\n", 3513 request->alpha2[0], request->alpha2[1], 3514 request->intersect ? " intersect" : "", 3515 request->processed ? " processed" : "", 3516 request->initiator, request->user_reg_hint_type); 3517 3518 if (request->user_reg_hint_type != NL80211_USER_REG_HINT_CELL_BASE) 3519 return; 3520 3521 ret = ath6kl_wmi_set_regdomain_cmd(ar->wmi, request->alpha2); 3522 if (ret) { 3523 ath6kl_err("failed to set regdomain: %d\n", ret); 3524 return; 3525 } 3526 3527 /* 3528 * Firmware will apply the regdomain change only after a scan is 3529 * issued and it will send a WMI_REGDOMAIN_EVENTID when it has been 3530 * changed. 3531 */ 3532 3533 for (i = 0; i < IEEE80211_NUM_BANDS; i++) 3534 if (wiphy->bands[i]) 3535 rates[i] = (1 << wiphy->bands[i]->n_bitrates) - 1; 3536 3537 3538 ret = ath6kl_wmi_beginscan_cmd(ar->wmi, 0, WMI_LONG_SCAN, false, 3539 false, 0, ATH6KL_FG_SCAN_INTERVAL, 3540 0, NULL, false, rates); 3541 if (ret) { 3542 ath6kl_err("failed to start scan for a regdomain change: %d\n", 3543 ret); 3544 return; 3545 } 3546 } 3547 3548 static int ath6kl_cfg80211_vif_init(struct ath6kl_vif *vif) 3549 { 3550 vif->aggr_cntxt = aggr_init(vif); 3551 if (!vif->aggr_cntxt) { 3552 ath6kl_err("failed to initialize aggr\n"); 3553 return -ENOMEM; 3554 } 3555 3556 setup_timer(&vif->disconnect_timer, disconnect_timer_handler, 3557 (unsigned long) vif->ndev); 3558 setup_timer(&vif->sched_scan_timer, ath6kl_wmi_sscan_timer, 3559 (unsigned long) vif); 3560 3561 set_bit(WMM_ENABLED, &vif->flags); 3562 spin_lock_init(&vif->if_lock); 3563 3564 INIT_LIST_HEAD(&vif->mc_filter); 3565 3566 return 0; 3567 } 3568 3569 void ath6kl_cfg80211_vif_stop(struct ath6kl_vif *vif, bool wmi_ready) 3570 { 3571 static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 3572 bool discon_issued; 3573 3574 netif_stop_queue(vif->ndev); 3575 3576 clear_bit(WLAN_ENABLED, &vif->flags); 3577 3578 if (wmi_ready) { 3579 discon_issued = test_bit(CONNECTED, &vif->flags) || 3580 test_bit(CONNECT_PEND, &vif->flags); 3581 ath6kl_disconnect(vif); 3582 del_timer(&vif->disconnect_timer); 3583 3584 if (discon_issued) 3585 ath6kl_disconnect_event(vif, DISCONNECT_CMD, 3586 (vif->nw_type & AP_NETWORK) ? 3587 bcast_mac : vif->bssid, 3588 0, NULL, 0); 3589 } 3590 3591 if (vif->scan_req) { 3592 cfg80211_scan_done(vif->scan_req, true); 3593 vif->scan_req = NULL; 3594 } 3595 3596 /* need to clean up enhanced bmiss detection fw state */ 3597 ath6kl_cfg80211_sta_bmiss_enhance(vif, false); 3598 } 3599 3600 void ath6kl_cfg80211_vif_cleanup(struct ath6kl_vif *vif) 3601 { 3602 struct ath6kl *ar = vif->ar; 3603 struct ath6kl_mc_filter *mc_filter, *tmp; 3604 3605 aggr_module_destroy(vif->aggr_cntxt); 3606 3607 ar->avail_idx_map |= BIT(vif->fw_vif_idx); 3608 3609 if (vif->nw_type == ADHOC_NETWORK) 3610 ar->ibss_if_active = false; 3611 3612 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) { 3613 list_del(&mc_filter->list); 3614 kfree(mc_filter); 3615 } 3616 3617 unregister_netdevice(vif->ndev); 3618 3619 ar->num_vif--; 3620 } 3621 3622 struct wireless_dev *ath6kl_interface_add(struct ath6kl *ar, const char *name, 3623 enum nl80211_iftype type, 3624 u8 fw_vif_idx, u8 nw_type) 3625 { 3626 struct net_device *ndev; 3627 struct ath6kl_vif *vif; 3628 3629 ndev = alloc_netdev(sizeof(*vif), name, ether_setup); 3630 if (!ndev) 3631 return NULL; 3632 3633 vif = netdev_priv(ndev); 3634 ndev->ieee80211_ptr = &vif->wdev; 3635 vif->wdev.wiphy = ar->wiphy; 3636 vif->ar = ar; 3637 vif->ndev = ndev; 3638 SET_NETDEV_DEV(ndev, wiphy_dev(vif->wdev.wiphy)); 3639 vif->wdev.netdev = ndev; 3640 vif->wdev.iftype = type; 3641 vif->fw_vif_idx = fw_vif_idx; 3642 vif->nw_type = nw_type; 3643 vif->next_mode = nw_type; 3644 vif->listen_intvl_t = ATH6KL_DEFAULT_LISTEN_INTVAL; 3645 vif->bmiss_time_t = ATH6KL_DEFAULT_BMISS_TIME; 3646 vif->bg_scan_period = 0; 3647 vif->htcap[IEEE80211_BAND_2GHZ].ht_enable = true; 3648 vif->htcap[IEEE80211_BAND_5GHZ].ht_enable = true; 3649 3650 memcpy(ndev->dev_addr, ar->mac_addr, ETH_ALEN); 3651 if (fw_vif_idx != 0) { 3652 ndev->dev_addr[0] = (ndev->dev_addr[0] ^ (1 << fw_vif_idx)) | 3653 0x2; 3654 if (test_bit(ATH6KL_FW_CAPABILITY_CUSTOM_MAC_ADDR, 3655 ar->fw_capabilities)) 3656 ndev->dev_addr[4] ^= 0x80; 3657 } 3658 3659 init_netdev(ndev); 3660 3661 ath6kl_init_control_info(vif); 3662 3663 if (ath6kl_cfg80211_vif_init(vif)) 3664 goto err; 3665 3666 if (register_netdevice(ndev)) 3667 goto err; 3668 3669 ar->avail_idx_map &= ~BIT(fw_vif_idx); 3670 vif->sme_state = SME_DISCONNECTED; 3671 set_bit(WLAN_ENABLED, &vif->flags); 3672 ar->wlan_pwr_state = WLAN_POWER_STATE_ON; 3673 3674 if (type == NL80211_IFTYPE_ADHOC) 3675 ar->ibss_if_active = true; 3676 3677 spin_lock_bh(&ar->list_lock); 3678 list_add_tail(&vif->list, &ar->vif_list); 3679 spin_unlock_bh(&ar->list_lock); 3680 3681 return &vif->wdev; 3682 3683 err: 3684 aggr_module_destroy(vif->aggr_cntxt); 3685 free_netdev(ndev); 3686 return NULL; 3687 } 3688 3689 #ifdef CONFIG_PM 3690 static const struct wiphy_wowlan_support ath6kl_wowlan_support = { 3691 .flags = WIPHY_WOWLAN_MAGIC_PKT | 3692 WIPHY_WOWLAN_DISCONNECT | 3693 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 3694 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 3695 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 3696 WIPHY_WOWLAN_4WAY_HANDSHAKE, 3697 .n_patterns = WOW_MAX_FILTERS_PER_LIST, 3698 .pattern_min_len = 1, 3699 .pattern_max_len = WOW_PATTERN_SIZE, 3700 }; 3701 #endif 3702 3703 int ath6kl_cfg80211_init(struct ath6kl *ar) 3704 { 3705 struct wiphy *wiphy = ar->wiphy; 3706 bool band_2gig = false, band_5gig = false, ht = false; 3707 int ret; 3708 3709 wiphy->mgmt_stypes = ath6kl_mgmt_stypes; 3710 3711 wiphy->max_remain_on_channel_duration = 5000; 3712 3713 /* set device pointer for wiphy */ 3714 set_wiphy_dev(wiphy, ar->dev); 3715 3716 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 3717 BIT(NL80211_IFTYPE_ADHOC) | 3718 BIT(NL80211_IFTYPE_AP); 3719 if (ar->p2p) { 3720 wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_GO) | 3721 BIT(NL80211_IFTYPE_P2P_CLIENT); 3722 } 3723 3724 if (config_enabled(CONFIG_ATH6KL_REGDOMAIN) && 3725 test_bit(ATH6KL_FW_CAPABILITY_REGDOMAIN, ar->fw_capabilities)) { 3726 wiphy->reg_notifier = ath6kl_cfg80211_reg_notify; 3727 ar->wiphy->features |= NL80211_FEATURE_CELL_BASE_REG_HINTS; 3728 } 3729 3730 /* max num of ssids that can be probed during scanning */ 3731 wiphy->max_scan_ssids = MAX_PROBED_SSIDS; 3732 3733 /* max num of ssids that can be matched after scan */ 3734 if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_MATCH_LIST, 3735 ar->fw_capabilities)) 3736 wiphy->max_match_sets = MAX_PROBED_SSIDS; 3737 3738 wiphy->max_scan_ie_len = 1000; /* FIX: what is correct limit? */ 3739 switch (ar->hw.cap) { 3740 case WMI_11AN_CAP: 3741 ht = true; 3742 case WMI_11A_CAP: 3743 band_5gig = true; 3744 break; 3745 case WMI_11GN_CAP: 3746 ht = true; 3747 case WMI_11G_CAP: 3748 band_2gig = true; 3749 break; 3750 case WMI_11AGN_CAP: 3751 ht = true; 3752 case WMI_11AG_CAP: 3753 band_2gig = true; 3754 band_5gig = true; 3755 break; 3756 default: 3757 ath6kl_err("invalid phy capability!\n"); 3758 return -EINVAL; 3759 } 3760 3761 /* 3762 * Even if the fw has HT support, advertise HT cap only when 3763 * the firmware has support to override RSN capability, otherwise 3764 * 4-way handshake would fail. 3765 */ 3766 if (!(ht && 3767 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE, 3768 ar->fw_capabilities))) { 3769 ath6kl_band_2ghz.ht_cap.cap = 0; 3770 ath6kl_band_2ghz.ht_cap.ht_supported = false; 3771 ath6kl_band_5ghz.ht_cap.cap = 0; 3772 ath6kl_band_5ghz.ht_cap.ht_supported = false; 3773 } 3774 3775 if (ar->hw.flags & ATH6KL_HW_64BIT_RATES) { 3776 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff; 3777 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff; 3778 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[1] = 0xff; 3779 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[1] = 0xff; 3780 } else { 3781 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff; 3782 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff; 3783 } 3784 3785 if (band_2gig) 3786 wiphy->bands[IEEE80211_BAND_2GHZ] = &ath6kl_band_2ghz; 3787 if (band_5gig) 3788 wiphy->bands[IEEE80211_BAND_5GHZ] = &ath6kl_band_5ghz; 3789 3790 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; 3791 3792 wiphy->cipher_suites = cipher_suites; 3793 wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); 3794 3795 #ifdef CONFIG_PM 3796 wiphy->wowlan = &ath6kl_wowlan_support; 3797 #endif 3798 3799 wiphy->max_sched_scan_ssids = MAX_PROBED_SSIDS; 3800 3801 ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM | 3802 WIPHY_FLAG_HAVE_AP_SME | 3803 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL | 3804 WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD; 3805 3806 if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_V2, ar->fw_capabilities)) 3807 ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN; 3808 3809 if (test_bit(ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT, 3810 ar->fw_capabilities)) 3811 ar->wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER; 3812 3813 ar->wiphy->probe_resp_offload = 3814 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS | 3815 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 | 3816 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P; 3817 3818 ret = wiphy_register(wiphy); 3819 if (ret < 0) { 3820 ath6kl_err("couldn't register wiphy device\n"); 3821 return ret; 3822 } 3823 3824 ar->wiphy_registered = true; 3825 3826 return 0; 3827 } 3828 3829 void ath6kl_cfg80211_cleanup(struct ath6kl *ar) 3830 { 3831 wiphy_unregister(ar->wiphy); 3832 3833 ar->wiphy_registered = false; 3834 } 3835 3836 struct ath6kl *ath6kl_cfg80211_create(void) 3837 { 3838 struct ath6kl *ar; 3839 struct wiphy *wiphy; 3840 3841 /* create a new wiphy for use with cfg80211 */ 3842 wiphy = wiphy_new(&ath6kl_cfg80211_ops, sizeof(struct ath6kl)); 3843 3844 if (!wiphy) { 3845 ath6kl_err("couldn't allocate wiphy device\n"); 3846 return NULL; 3847 } 3848 3849 ar = wiphy_priv(wiphy); 3850 ar->wiphy = wiphy; 3851 3852 return ar; 3853 } 3854 3855 /* Note: ar variable must not be accessed after calling this! */ 3856 void ath6kl_cfg80211_destroy(struct ath6kl *ar) 3857 { 3858 int i; 3859 3860 for (i = 0; i < AP_MAX_NUM_STA; i++) 3861 kfree(ar->sta_list[i].aggr_conn); 3862 3863 wiphy_free(ar->wiphy); 3864 } 3865 3866