1 /** 2 * Copyright (c) 2014 Redpine Signals Inc. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include <linux/etherdevice.h> 18 #include "rsi_debugfs.h" 19 #include "rsi_mgmt.h" 20 #include "rsi_sdio.h" 21 #include "rsi_common.h" 22 #include "rsi_ps.h" 23 24 static const struct ieee80211_channel rsi_2ghz_channels[] = { 25 { .band = NL80211_BAND_2GHZ, .center_freq = 2412, 26 .hw_value = 1 }, /* Channel 1 */ 27 { .band = NL80211_BAND_2GHZ, .center_freq = 2417, 28 .hw_value = 2 }, /* Channel 2 */ 29 { .band = NL80211_BAND_2GHZ, .center_freq = 2422, 30 .hw_value = 3 }, /* Channel 3 */ 31 { .band = NL80211_BAND_2GHZ, .center_freq = 2427, 32 .hw_value = 4 }, /* Channel 4 */ 33 { .band = NL80211_BAND_2GHZ, .center_freq = 2432, 34 .hw_value = 5 }, /* Channel 5 */ 35 { .band = NL80211_BAND_2GHZ, .center_freq = 2437, 36 .hw_value = 6 }, /* Channel 6 */ 37 { .band = NL80211_BAND_2GHZ, .center_freq = 2442, 38 .hw_value = 7 }, /* Channel 7 */ 39 { .band = NL80211_BAND_2GHZ, .center_freq = 2447, 40 .hw_value = 8 }, /* Channel 8 */ 41 { .band = NL80211_BAND_2GHZ, .center_freq = 2452, 42 .hw_value = 9 }, /* Channel 9 */ 43 { .band = NL80211_BAND_2GHZ, .center_freq = 2457, 44 .hw_value = 10 }, /* Channel 10 */ 45 { .band = NL80211_BAND_2GHZ, .center_freq = 2462, 46 .hw_value = 11 }, /* Channel 11 */ 47 { .band = NL80211_BAND_2GHZ, .center_freq = 2467, 48 .hw_value = 12 }, /* Channel 12 */ 49 { .band = NL80211_BAND_2GHZ, .center_freq = 2472, 50 .hw_value = 13 }, /* Channel 13 */ 51 { .band = NL80211_BAND_2GHZ, .center_freq = 2484, 52 .hw_value = 14 }, /* Channel 14 */ 53 }; 54 55 static const struct ieee80211_channel rsi_5ghz_channels[] = { 56 { .band = NL80211_BAND_5GHZ, .center_freq = 5180, 57 .hw_value = 36, }, /* Channel 36 */ 58 { .band = NL80211_BAND_5GHZ, .center_freq = 5200, 59 .hw_value = 40, }, /* Channel 40 */ 60 { .band = NL80211_BAND_5GHZ, .center_freq = 5220, 61 .hw_value = 44, }, /* Channel 44 */ 62 { .band = NL80211_BAND_5GHZ, .center_freq = 5240, 63 .hw_value = 48, }, /* Channel 48 */ 64 { .band = NL80211_BAND_5GHZ, .center_freq = 5260, 65 .hw_value = 52, }, /* Channel 52 */ 66 { .band = NL80211_BAND_5GHZ, .center_freq = 5280, 67 .hw_value = 56, }, /* Channel 56 */ 68 { .band = NL80211_BAND_5GHZ, .center_freq = 5300, 69 .hw_value = 60, }, /* Channel 60 */ 70 { .band = NL80211_BAND_5GHZ, .center_freq = 5320, 71 .hw_value = 64, }, /* Channel 64 */ 72 { .band = NL80211_BAND_5GHZ, .center_freq = 5500, 73 .hw_value = 100, }, /* Channel 100 */ 74 { .band = NL80211_BAND_5GHZ, .center_freq = 5520, 75 .hw_value = 104, }, /* Channel 104 */ 76 { .band = NL80211_BAND_5GHZ, .center_freq = 5540, 77 .hw_value = 108, }, /* Channel 108 */ 78 { .band = NL80211_BAND_5GHZ, .center_freq = 5560, 79 .hw_value = 112, }, /* Channel 112 */ 80 { .band = NL80211_BAND_5GHZ, .center_freq = 5580, 81 .hw_value = 116, }, /* Channel 116 */ 82 { .band = NL80211_BAND_5GHZ, .center_freq = 5600, 83 .hw_value = 120, }, /* Channel 120 */ 84 { .band = NL80211_BAND_5GHZ, .center_freq = 5620, 85 .hw_value = 124, }, /* Channel 124 */ 86 { .band = NL80211_BAND_5GHZ, .center_freq = 5640, 87 .hw_value = 128, }, /* Channel 128 */ 88 { .band = NL80211_BAND_5GHZ, .center_freq = 5660, 89 .hw_value = 132, }, /* Channel 132 */ 90 { .band = NL80211_BAND_5GHZ, .center_freq = 5680, 91 .hw_value = 136, }, /* Channel 136 */ 92 { .band = NL80211_BAND_5GHZ, .center_freq = 5700, 93 .hw_value = 140, }, /* Channel 140 */ 94 { .band = NL80211_BAND_5GHZ, .center_freq = 5745, 95 .hw_value = 149, }, /* Channel 149 */ 96 { .band = NL80211_BAND_5GHZ, .center_freq = 5765, 97 .hw_value = 153, }, /* Channel 153 */ 98 { .band = NL80211_BAND_5GHZ, .center_freq = 5785, 99 .hw_value = 157, }, /* Channel 157 */ 100 { .band = NL80211_BAND_5GHZ, .center_freq = 5805, 101 .hw_value = 161, }, /* Channel 161 */ 102 { .band = NL80211_BAND_5GHZ, .center_freq = 5825, 103 .hw_value = 165, }, /* Channel 165 */ 104 }; 105 106 struct ieee80211_rate rsi_rates[12] = { 107 { .bitrate = STD_RATE_01 * 5, .hw_value = RSI_RATE_1 }, 108 { .bitrate = STD_RATE_02 * 5, .hw_value = RSI_RATE_2 }, 109 { .bitrate = STD_RATE_5_5 * 5, .hw_value = RSI_RATE_5_5 }, 110 { .bitrate = STD_RATE_11 * 5, .hw_value = RSI_RATE_11 }, 111 { .bitrate = STD_RATE_06 * 5, .hw_value = RSI_RATE_6 }, 112 { .bitrate = STD_RATE_09 * 5, .hw_value = RSI_RATE_9 }, 113 { .bitrate = STD_RATE_12 * 5, .hw_value = RSI_RATE_12 }, 114 { .bitrate = STD_RATE_18 * 5, .hw_value = RSI_RATE_18 }, 115 { .bitrate = STD_RATE_24 * 5, .hw_value = RSI_RATE_24 }, 116 { .bitrate = STD_RATE_36 * 5, .hw_value = RSI_RATE_36 }, 117 { .bitrate = STD_RATE_48 * 5, .hw_value = RSI_RATE_48 }, 118 { .bitrate = STD_RATE_54 * 5, .hw_value = RSI_RATE_54 }, 119 }; 120 121 const u16 rsi_mcsrates[8] = { 122 RSI_RATE_MCS0, RSI_RATE_MCS1, RSI_RATE_MCS2, RSI_RATE_MCS3, 123 RSI_RATE_MCS4, RSI_RATE_MCS5, RSI_RATE_MCS6, RSI_RATE_MCS7 124 }; 125 126 static const u32 rsi_max_ap_stas[16] = { 127 32, /* 1 - Wi-Fi alone */ 128 0, /* 2 */ 129 0, /* 3 */ 130 0, /* 4 - BT EDR alone */ 131 4, /* 5 - STA + BT EDR */ 132 32, /* 6 - AP + BT EDR */ 133 0, /* 7 */ 134 0, /* 8 - BT LE alone */ 135 4, /* 9 - STA + BE LE */ 136 0, /* 10 */ 137 0, /* 11 */ 138 0, /* 12 */ 139 1, /* 13 - STA + BT Dual */ 140 4, /* 14 - AP + BT Dual */ 141 }; 142 143 static const struct ieee80211_iface_limit rsi_iface_limits[] = { 144 { 145 .max = 1, 146 .types = BIT(NL80211_IFTYPE_STATION), 147 }, 148 { 149 .max = 1, 150 .types = BIT(NL80211_IFTYPE_AP) | 151 BIT(NL80211_IFTYPE_P2P_CLIENT) | 152 BIT(NL80211_IFTYPE_P2P_GO), 153 }, 154 { 155 .max = 1, 156 .types = BIT(NL80211_IFTYPE_P2P_DEVICE), 157 }, 158 }; 159 160 static const struct ieee80211_iface_combination rsi_iface_combinations[] = { 161 { 162 .num_different_channels = 1, 163 .max_interfaces = 3, 164 .limits = rsi_iface_limits, 165 .n_limits = ARRAY_SIZE(rsi_iface_limits), 166 }, 167 }; 168 169 /** 170 * rsi_is_cipher_wep() - This function determines if the cipher is WEP or not. 171 * @common: Pointer to the driver private structure. 172 * 173 * Return: If cipher type is WEP, a value of 1 is returned, else 0. 174 */ 175 176 bool rsi_is_cipher_wep(struct rsi_common *common) 177 { 178 if (((common->secinfo.gtk_cipher == WLAN_CIPHER_SUITE_WEP104) || 179 (common->secinfo.gtk_cipher == WLAN_CIPHER_SUITE_WEP40)) && 180 (!common->secinfo.ptk_cipher)) 181 return true; 182 else 183 return false; 184 } 185 186 /** 187 * rsi_register_rates_channels() - This function registers channels and rates. 188 * @adapter: Pointer to the adapter structure. 189 * @band: Operating band to be set. 190 * 191 * Return: None. 192 */ 193 static void rsi_register_rates_channels(struct rsi_hw *adapter, int band) 194 { 195 struct ieee80211_supported_band *sbands = &adapter->sbands[band]; 196 void *channels = NULL; 197 198 if (band == NL80211_BAND_2GHZ) { 199 channels = kmalloc(sizeof(rsi_2ghz_channels), GFP_KERNEL); 200 memcpy(channels, 201 rsi_2ghz_channels, 202 sizeof(rsi_2ghz_channels)); 203 sbands->band = NL80211_BAND_2GHZ; 204 sbands->n_channels = ARRAY_SIZE(rsi_2ghz_channels); 205 sbands->bitrates = rsi_rates; 206 sbands->n_bitrates = ARRAY_SIZE(rsi_rates); 207 } else { 208 channels = kmalloc(sizeof(rsi_5ghz_channels), GFP_KERNEL); 209 memcpy(channels, 210 rsi_5ghz_channels, 211 sizeof(rsi_5ghz_channels)); 212 sbands->band = NL80211_BAND_5GHZ; 213 sbands->n_channels = ARRAY_SIZE(rsi_5ghz_channels); 214 sbands->bitrates = &rsi_rates[4]; 215 sbands->n_bitrates = ARRAY_SIZE(rsi_rates) - 4; 216 } 217 218 sbands->channels = channels; 219 220 memset(&sbands->ht_cap, 0, sizeof(struct ieee80211_sta_ht_cap)); 221 sbands->ht_cap.ht_supported = true; 222 sbands->ht_cap.cap = (IEEE80211_HT_CAP_SUP_WIDTH_20_40 | 223 IEEE80211_HT_CAP_SGI_20 | 224 IEEE80211_HT_CAP_SGI_40); 225 sbands->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K; 226 sbands->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE; 227 sbands->ht_cap.mcs.rx_mask[0] = 0xff; 228 sbands->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; 229 /* sbands->ht_cap.mcs.rx_highest = 0x82; */ 230 } 231 232 static int rsi_mac80211_hw_scan_start(struct ieee80211_hw *hw, 233 struct ieee80211_vif *vif, 234 struct ieee80211_scan_request *hw_req) 235 { 236 struct cfg80211_scan_request *scan_req = &hw_req->req; 237 struct rsi_hw *adapter = hw->priv; 238 struct rsi_common *common = adapter->priv; 239 struct ieee80211_bss_conf *bss = &vif->bss_conf; 240 241 rsi_dbg(INFO_ZONE, "***** Hardware scan start *****\n"); 242 common->mac_ops_resumed = false; 243 244 if (common->fsm_state != FSM_MAC_INIT_DONE) 245 return -ENODEV; 246 247 if ((common->wow_flags & RSI_WOW_ENABLED) || 248 scan_req->n_channels == 0) 249 return -EINVAL; 250 251 /* Scan already in progress. So return */ 252 if (common->bgscan_en) 253 return -EBUSY; 254 255 /* If STA is not connected, return with special value 1, in order 256 * to start sw_scan in mac80211 257 */ 258 if (!bss->assoc) 259 return 1; 260 261 mutex_lock(&common->mutex); 262 common->hwscan = scan_req; 263 if (!rsi_send_bgscan_params(common, RSI_START_BGSCAN)) { 264 if (!rsi_send_bgscan_probe_req(common, vif)) { 265 rsi_dbg(INFO_ZONE, "Background scan started...\n"); 266 common->bgscan_en = true; 267 } 268 } 269 mutex_unlock(&common->mutex); 270 271 return 0; 272 } 273 274 static void rsi_mac80211_cancel_hw_scan(struct ieee80211_hw *hw, 275 struct ieee80211_vif *vif) 276 { 277 struct rsi_hw *adapter = hw->priv; 278 struct rsi_common *common = adapter->priv; 279 struct cfg80211_scan_info info; 280 281 rsi_dbg(INFO_ZONE, "***** Hardware scan stop *****\n"); 282 mutex_lock(&common->mutex); 283 284 if (common->bgscan_en) { 285 if (!rsi_send_bgscan_params(common, RSI_STOP_BGSCAN)) 286 common->bgscan_en = false; 287 info.aborted = false; 288 ieee80211_scan_completed(adapter->hw, &info); 289 rsi_dbg(INFO_ZONE, "Back ground scan cancelled\n"); 290 } 291 common->hwscan = NULL; 292 mutex_unlock(&common->mutex); 293 } 294 295 /** 296 * rsi_mac80211_detach() - This function is used to de-initialize the 297 * Mac80211 stack. 298 * @adapter: Pointer to the adapter structure. 299 * 300 * Return: None. 301 */ 302 void rsi_mac80211_detach(struct rsi_hw *adapter) 303 { 304 struct ieee80211_hw *hw = adapter->hw; 305 enum nl80211_band band; 306 307 if (hw) { 308 ieee80211_stop_queues(hw); 309 ieee80211_unregister_hw(hw); 310 ieee80211_free_hw(hw); 311 adapter->hw = NULL; 312 } 313 314 for (band = 0; band < NUM_NL80211_BANDS; band++) { 315 struct ieee80211_supported_band *sband = 316 &adapter->sbands[band]; 317 318 kfree(sband->channels); 319 } 320 321 #ifdef CONFIG_RSI_DEBUGFS 322 rsi_remove_dbgfs(adapter); 323 kfree(adapter->dfsentry); 324 #endif 325 } 326 EXPORT_SYMBOL_GPL(rsi_mac80211_detach); 327 328 /** 329 * rsi_indicate_tx_status() - This function indicates the transmit status. 330 * @adapter: Pointer to the adapter structure. 331 * @skb: Pointer to the socket buffer structure. 332 * @status: Status 333 * 334 * Return: None. 335 */ 336 void rsi_indicate_tx_status(struct rsi_hw *adapter, 337 struct sk_buff *skb, 338 int status) 339 { 340 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 341 struct skb_info *tx_params; 342 343 if (!adapter->hw) { 344 rsi_dbg(ERR_ZONE, "##### No MAC #####\n"); 345 return; 346 } 347 348 if (!status) 349 info->flags |= IEEE80211_TX_STAT_ACK; 350 351 tx_params = (struct skb_info *)info->driver_data; 352 skb_pull(skb, tx_params->internal_hdr_size); 353 memset(info->driver_data, 0, IEEE80211_TX_INFO_DRIVER_DATA_SIZE); 354 355 ieee80211_tx_status_irqsafe(adapter->hw, skb); 356 } 357 358 /** 359 * rsi_mac80211_tx() - This is the handler that 802.11 module calls for each 360 * transmitted frame.SKB contains the buffer starting 361 * from the IEEE 802.11 header. 362 * @hw: Pointer to the ieee80211_hw structure. 363 * @control: Pointer to the ieee80211_tx_control structure 364 * @skb: Pointer to the socket buffer structure. 365 * 366 * Return: None 367 */ 368 static void rsi_mac80211_tx(struct ieee80211_hw *hw, 369 struct ieee80211_tx_control *control, 370 struct sk_buff *skb) 371 { 372 struct rsi_hw *adapter = hw->priv; 373 struct rsi_common *common = adapter->priv; 374 struct ieee80211_hdr *wlh = (struct ieee80211_hdr *)skb->data; 375 376 if (ieee80211_is_auth(wlh->frame_control)) 377 common->mac_ops_resumed = false; 378 379 rsi_core_xmit(common, skb); 380 } 381 382 /** 383 * rsi_mac80211_start() - This is first handler that 802.11 module calls, since 384 * the driver init is complete by then, just 385 * returns success. 386 * @hw: Pointer to the ieee80211_hw structure. 387 * 388 * Return: 0 as success. 389 */ 390 static int rsi_mac80211_start(struct ieee80211_hw *hw) 391 { 392 struct rsi_hw *adapter = hw->priv; 393 struct rsi_common *common = adapter->priv; 394 395 rsi_dbg(ERR_ZONE, "===> Interface UP <===\n"); 396 mutex_lock(&common->mutex); 397 if (common->hibernate_resume) { 398 common->reinit_hw = true; 399 adapter->host_intf_ops->reinit_device(adapter); 400 wait_for_completion(&adapter->priv->wlan_init_completion); 401 } 402 common->iface_down = false; 403 wiphy_rfkill_start_polling(hw->wiphy); 404 rsi_send_rx_filter_frame(common, 0); 405 mutex_unlock(&common->mutex); 406 407 return 0; 408 } 409 410 /** 411 * rsi_mac80211_stop() - This is the last handler that 802.11 module calls. 412 * @hw: Pointer to the ieee80211_hw structure. 413 * 414 * Return: None. 415 */ 416 static void rsi_mac80211_stop(struct ieee80211_hw *hw) 417 { 418 struct rsi_hw *adapter = hw->priv; 419 struct rsi_common *common = adapter->priv; 420 421 rsi_dbg(ERR_ZONE, "===> Interface DOWN <===\n"); 422 mutex_lock(&common->mutex); 423 common->iface_down = true; 424 wiphy_rfkill_stop_polling(hw->wiphy); 425 426 /* Block all rx frames */ 427 rsi_send_rx_filter_frame(common, 0xffff); 428 429 mutex_unlock(&common->mutex); 430 } 431 432 static int rsi_map_intf_mode(enum nl80211_iftype vif_type) 433 { 434 switch (vif_type) { 435 case NL80211_IFTYPE_STATION: 436 return RSI_OPMODE_STA; 437 case NL80211_IFTYPE_AP: 438 return RSI_OPMODE_AP; 439 case NL80211_IFTYPE_P2P_DEVICE: 440 return RSI_OPMODE_P2P_CLIENT; 441 case NL80211_IFTYPE_P2P_CLIENT: 442 return RSI_OPMODE_P2P_CLIENT; 443 case NL80211_IFTYPE_P2P_GO: 444 return RSI_OPMODE_P2P_GO; 445 default: 446 return RSI_OPMODE_UNSUPPORTED; 447 } 448 } 449 450 /** 451 * rsi_mac80211_add_interface() - This function is called when a netdevice 452 * attached to the hardware is enabled. 453 * @hw: Pointer to the ieee80211_hw structure. 454 * @vif: Pointer to the ieee80211_vif structure. 455 * 456 * Return: ret: 0 on success, negative error code on failure. 457 */ 458 static int rsi_mac80211_add_interface(struct ieee80211_hw *hw, 459 struct ieee80211_vif *vif) 460 { 461 struct rsi_hw *adapter = hw->priv; 462 struct rsi_common *common = adapter->priv; 463 struct vif_priv *vif_info = (struct vif_priv *)vif->drv_priv; 464 enum opmode intf_mode; 465 enum vap_status vap_status; 466 int vap_idx = -1, i; 467 468 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 469 mutex_lock(&common->mutex); 470 471 intf_mode = rsi_map_intf_mode(vif->type); 472 if (intf_mode == RSI_OPMODE_UNSUPPORTED) { 473 rsi_dbg(ERR_ZONE, 474 "%s: Interface type %d not supported\n", __func__, 475 vif->type); 476 mutex_unlock(&common->mutex); 477 return -EOPNOTSUPP; 478 } 479 if ((vif->type == NL80211_IFTYPE_P2P_DEVICE) || 480 (vif->type == NL80211_IFTYPE_P2P_CLIENT) || 481 (vif->type == NL80211_IFTYPE_P2P_GO)) 482 common->p2p_enabled = true; 483 484 /* Get free vap index */ 485 for (i = 0; i < RSI_MAX_VIFS; i++) { 486 if (!adapter->vifs[i] || 487 !memcmp(vif->addr, adapter->vifs[i]->addr, ETH_ALEN)) { 488 vap_idx = i; 489 break; 490 } 491 } 492 if (vap_idx < 0) { 493 rsi_dbg(ERR_ZONE, "Reject: Max VAPs reached\n"); 494 mutex_unlock(&common->mutex); 495 return -EOPNOTSUPP; 496 } 497 vif_info->vap_id = vap_idx; 498 adapter->vifs[vap_idx] = vif; 499 adapter->sc_nvifs++; 500 vap_status = VAP_ADD; 501 502 if (rsi_set_vap_capabilities(common, intf_mode, vif->addr, 503 vif_info->vap_id, vap_status)) { 504 rsi_dbg(ERR_ZONE, "Failed to set VAP capabilities\n"); 505 mutex_unlock(&common->mutex); 506 return -EINVAL; 507 } 508 509 if ((vif->type == NL80211_IFTYPE_AP) || 510 (vif->type == NL80211_IFTYPE_P2P_GO)) { 511 rsi_send_rx_filter_frame(common, DISALLOW_BEACONS); 512 common->min_rate = RSI_RATE_AUTO; 513 for (i = 0; i < common->max_stations; i++) 514 common->stations[i].sta = NULL; 515 } 516 517 mutex_unlock(&common->mutex); 518 519 return 0; 520 } 521 522 /** 523 * rsi_mac80211_remove_interface() - This function notifies driver that an 524 * interface is going down. 525 * @hw: Pointer to the ieee80211_hw structure. 526 * @vif: Pointer to the ieee80211_vif structure. 527 * 528 * Return: None. 529 */ 530 static void rsi_mac80211_remove_interface(struct ieee80211_hw *hw, 531 struct ieee80211_vif *vif) 532 { 533 struct rsi_hw *adapter = hw->priv; 534 struct rsi_common *common = adapter->priv; 535 enum opmode opmode; 536 int i; 537 538 rsi_dbg(INFO_ZONE, "Remove Interface Called\n"); 539 540 mutex_lock(&common->mutex); 541 542 if (adapter->sc_nvifs <= 0) { 543 mutex_unlock(&common->mutex); 544 return; 545 } 546 547 opmode = rsi_map_intf_mode(vif->type); 548 if (opmode == RSI_OPMODE_UNSUPPORTED) { 549 rsi_dbg(ERR_ZONE, "Opmode error : %d\n", opmode); 550 mutex_unlock(&common->mutex); 551 return; 552 } 553 for (i = 0; i < RSI_MAX_VIFS; i++) { 554 if (!adapter->vifs[i]) 555 continue; 556 if (vif == adapter->vifs[i]) { 557 rsi_set_vap_capabilities(common, opmode, vif->addr, 558 i, VAP_DELETE); 559 adapter->sc_nvifs--; 560 adapter->vifs[i] = NULL; 561 } 562 } 563 mutex_unlock(&common->mutex); 564 } 565 566 /** 567 * rsi_channel_change() - This function is a performs the checks 568 * required for changing a channel and sets 569 * the channel accordingly. 570 * @hw: Pointer to the ieee80211_hw structure. 571 * 572 * Return: 0 on success, negative error code on failure. 573 */ 574 static int rsi_channel_change(struct ieee80211_hw *hw) 575 { 576 struct rsi_hw *adapter = hw->priv; 577 struct rsi_common *common = adapter->priv; 578 int status = -EOPNOTSUPP; 579 struct ieee80211_channel *curchan = hw->conf.chandef.chan; 580 u16 channel = curchan->hw_value; 581 struct ieee80211_vif *vif; 582 struct ieee80211_bss_conf *bss; 583 bool assoc = false; 584 int i; 585 586 rsi_dbg(INFO_ZONE, 587 "%s: Set channel: %d MHz type: %d channel_no %d\n", 588 __func__, curchan->center_freq, 589 curchan->flags, channel); 590 591 for (i = 0; i < RSI_MAX_VIFS; i++) { 592 vif = adapter->vifs[i]; 593 if (!vif) 594 continue; 595 if (vif->type == NL80211_IFTYPE_STATION) { 596 bss = &vif->bss_conf; 597 if (bss->assoc) { 598 assoc = true; 599 break; 600 } 601 } 602 } 603 if (assoc) { 604 if (!common->hw_data_qs_blocked && 605 (rsi_get_connected_channel(vif) != channel)) { 606 rsi_dbg(INFO_ZONE, "blk data q %d\n", channel); 607 if (!rsi_send_block_unblock_frame(common, true)) 608 common->hw_data_qs_blocked = true; 609 } 610 } 611 612 status = rsi_band_check(common, curchan); 613 if (!status) 614 status = rsi_set_channel(adapter->priv, curchan); 615 616 if (assoc) { 617 if (common->hw_data_qs_blocked && 618 (rsi_get_connected_channel(vif) == channel)) { 619 rsi_dbg(INFO_ZONE, "unblk data q %d\n", channel); 620 if (!rsi_send_block_unblock_frame(common, false)) 621 common->hw_data_qs_blocked = false; 622 } 623 } 624 625 return status; 626 } 627 628 /** 629 * rsi_config_power() - This function configures tx power to device 630 * @hw: Pointer to the ieee80211_hw structure. 631 * 632 * Return: 0 on success, negative error code on failure. 633 */ 634 static int rsi_config_power(struct ieee80211_hw *hw) 635 { 636 struct rsi_hw *adapter = hw->priv; 637 struct rsi_common *common = adapter->priv; 638 struct ieee80211_conf *conf = &hw->conf; 639 640 if (adapter->sc_nvifs <= 0) { 641 rsi_dbg(ERR_ZONE, "%s: No virtual interface found\n", __func__); 642 return -EINVAL; 643 } 644 645 rsi_dbg(INFO_ZONE, 646 "%s: Set tx power: %d dBM\n", __func__, conf->power_level); 647 648 if (conf->power_level == common->tx_power) 649 return 0; 650 651 common->tx_power = conf->power_level; 652 653 return rsi_send_radio_params_update(common); 654 } 655 656 /** 657 * rsi_mac80211_config() - This function is a handler for configuration 658 * requests. The stack calls this function to 659 * change hardware configuration, e.g., channel. 660 * @hw: Pointer to the ieee80211_hw structure. 661 * @changed: Changed flags set. 662 * 663 * Return: 0 on success, negative error code on failure. 664 */ 665 static int rsi_mac80211_config(struct ieee80211_hw *hw, 666 u32 changed) 667 { 668 struct rsi_hw *adapter = hw->priv; 669 struct rsi_common *common = adapter->priv; 670 struct ieee80211_conf *conf = &hw->conf; 671 int status = -EOPNOTSUPP; 672 673 mutex_lock(&common->mutex); 674 675 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) 676 status = rsi_channel_change(hw); 677 678 /* tx power */ 679 if (changed & IEEE80211_CONF_CHANGE_POWER) { 680 rsi_dbg(INFO_ZONE, "%s: Configuring Power\n", __func__); 681 status = rsi_config_power(hw); 682 } 683 684 /* Power save parameters */ 685 if ((changed & IEEE80211_CONF_CHANGE_PS) && 686 !common->mac_ops_resumed) { 687 struct ieee80211_vif *vif, *sta_vif = NULL; 688 unsigned long flags; 689 int i, set_ps = 1; 690 691 for (i = 0; i < RSI_MAX_VIFS; i++) { 692 vif = adapter->vifs[i]; 693 if (!vif) 694 continue; 695 /* Don't go to power save if AP vap exists */ 696 if ((vif->type == NL80211_IFTYPE_AP) || 697 (vif->type == NL80211_IFTYPE_P2P_GO)) { 698 set_ps = 0; 699 break; 700 } 701 if ((vif->type == NL80211_IFTYPE_STATION || 702 vif->type == NL80211_IFTYPE_P2P_CLIENT) && 703 (!sta_vif || vif->bss_conf.assoc)) 704 sta_vif = vif; 705 } 706 if (set_ps && sta_vif) { 707 spin_lock_irqsave(&adapter->ps_lock, flags); 708 if (conf->flags & IEEE80211_CONF_PS) 709 rsi_enable_ps(adapter, sta_vif); 710 else 711 rsi_disable_ps(adapter, sta_vif); 712 spin_unlock_irqrestore(&adapter->ps_lock, flags); 713 } 714 } 715 716 /* RTS threshold */ 717 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 718 rsi_dbg(INFO_ZONE, "RTS threshold\n"); 719 if ((common->rts_threshold) <= IEEE80211_MAX_RTS_THRESHOLD) { 720 rsi_dbg(INFO_ZONE, 721 "%s: Sending vap updates....\n", __func__); 722 status = rsi_send_vap_dynamic_update(common); 723 } 724 } 725 mutex_unlock(&common->mutex); 726 727 return status; 728 } 729 730 /** 731 * rsi_get_connected_channel() - This function is used to get the current 732 * connected channel number. 733 * @adapter: Pointer to the adapter structure. 734 * 735 * Return: Current connected AP's channel number is returned. 736 */ 737 u16 rsi_get_connected_channel(struct ieee80211_vif *vif) 738 { 739 struct ieee80211_bss_conf *bss; 740 struct ieee80211_channel *channel; 741 742 if (!vif) 743 return 0; 744 745 bss = &vif->bss_conf; 746 channel = bss->chandef.chan; 747 748 if (!channel) 749 return 0; 750 751 return channel->hw_value; 752 } 753 754 static void rsi_switch_channel(struct rsi_hw *adapter, 755 struct ieee80211_vif *vif) 756 { 757 struct rsi_common *common = adapter->priv; 758 struct ieee80211_channel *channel; 759 760 if (common->iface_down) 761 return; 762 if (!vif) 763 return; 764 765 channel = vif->bss_conf.chandef.chan; 766 767 if (!channel) 768 return; 769 770 rsi_band_check(common, channel); 771 rsi_set_channel(common, channel); 772 rsi_dbg(INFO_ZONE, "Switched to channel - %d\n", channel->hw_value); 773 } 774 775 /** 776 * rsi_mac80211_bss_info_changed() - This function is a handler for config 777 * requests related to BSS parameters that 778 * may vary during BSS's lifespan. 779 * @hw: Pointer to the ieee80211_hw structure. 780 * @vif: Pointer to the ieee80211_vif structure. 781 * @bss_conf: Pointer to the ieee80211_bss_conf structure. 782 * @changed: Changed flags set. 783 * 784 * Return: None. 785 */ 786 static void rsi_mac80211_bss_info_changed(struct ieee80211_hw *hw, 787 struct ieee80211_vif *vif, 788 struct ieee80211_bss_conf *bss_conf, 789 u32 changed) 790 { 791 struct rsi_hw *adapter = hw->priv; 792 struct rsi_common *common = adapter->priv; 793 struct ieee80211_bss_conf *bss = &vif->bss_conf; 794 struct ieee80211_conf *conf = &hw->conf; 795 u16 rx_filter_word = 0; 796 797 mutex_lock(&common->mutex); 798 if (changed & BSS_CHANGED_ASSOC) { 799 rsi_dbg(INFO_ZONE, "%s: Changed Association status: %d\n", 800 __func__, bss_conf->assoc); 801 if (bss_conf->assoc) { 802 /* Send the RX filter frame */ 803 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | 804 ALLOW_CTRL_ASSOC_PEER | 805 ALLOW_MGMT_ASSOC_PEER); 806 rsi_send_rx_filter_frame(common, rx_filter_word); 807 } 808 rsi_inform_bss_status(common, 809 RSI_OPMODE_STA, 810 bss_conf->assoc, 811 bss_conf->bssid, 812 bss_conf->qos, 813 bss_conf->aid, 814 NULL, 0, 815 bss_conf->assoc_capability, vif); 816 adapter->ps_info.dtim_interval_duration = bss->dtim_period; 817 adapter->ps_info.listen_interval = conf->listen_interval; 818 819 /* If U-APSD is updated, send ps parameters to firmware */ 820 if (bss->assoc) { 821 if (common->uapsd_bitmap) { 822 rsi_dbg(INFO_ZONE, "Configuring UAPSD\n"); 823 rsi_conf_uapsd(adapter, vif); 824 } 825 } else { 826 common->uapsd_bitmap = 0; 827 } 828 } 829 830 if (changed & BSS_CHANGED_CQM) { 831 common->cqm_info.last_cqm_event_rssi = 0; 832 common->cqm_info.rssi_thold = bss_conf->cqm_rssi_thold; 833 common->cqm_info.rssi_hyst = bss_conf->cqm_rssi_hyst; 834 rsi_dbg(INFO_ZONE, "RSSI throld & hysteresis are: %d %d\n", 835 common->cqm_info.rssi_thold, 836 common->cqm_info.rssi_hyst); 837 } 838 839 if ((changed & BSS_CHANGED_BEACON_ENABLED) && 840 ((vif->type == NL80211_IFTYPE_AP) || 841 (vif->type == NL80211_IFTYPE_P2P_GO))) { 842 if (bss->enable_beacon) { 843 rsi_dbg(INFO_ZONE, "===> BEACON ENABLED <===\n"); 844 common->beacon_enabled = 1; 845 } else { 846 rsi_dbg(INFO_ZONE, "===> BEACON DISABLED <===\n"); 847 common->beacon_enabled = 0; 848 } 849 } 850 851 mutex_unlock(&common->mutex); 852 } 853 854 /** 855 * rsi_mac80211_conf_filter() - This function configure the device's RX filter. 856 * @hw: Pointer to the ieee80211_hw structure. 857 * @changed: Changed flags set. 858 * @total_flags: Total initial flags set. 859 * @multicast: Multicast. 860 * 861 * Return: None. 862 */ 863 static void rsi_mac80211_conf_filter(struct ieee80211_hw *hw, 864 u32 changed_flags, 865 u32 *total_flags, 866 u64 multicast) 867 { 868 /* Not doing much here as of now */ 869 *total_flags &= RSI_SUPP_FILTERS; 870 } 871 872 /** 873 * rsi_mac80211_conf_tx() - This function configures TX queue parameters 874 * (EDCF (aifs, cw_min, cw_max), bursting) 875 * for a hardware TX queue. 876 * @hw: Pointer to the ieee80211_hw structure 877 * @vif: Pointer to the ieee80211_vif structure. 878 * @queue: Queue number. 879 * @params: Pointer to ieee80211_tx_queue_params structure. 880 * 881 * Return: 0 on success, negative error code on failure. 882 */ 883 static int rsi_mac80211_conf_tx(struct ieee80211_hw *hw, 884 struct ieee80211_vif *vif, u16 queue, 885 const struct ieee80211_tx_queue_params *params) 886 { 887 struct rsi_hw *adapter = hw->priv; 888 struct rsi_common *common = adapter->priv; 889 u8 idx = 0; 890 891 if (queue >= IEEE80211_NUM_ACS) 892 return 0; 893 894 rsi_dbg(INFO_ZONE, 895 "%s: Conf queue %d, aifs: %d, cwmin: %d cwmax: %d, txop: %d\n", 896 __func__, queue, params->aifs, 897 params->cw_min, params->cw_max, params->txop); 898 899 mutex_lock(&common->mutex); 900 /* Map into the way the f/w expects */ 901 switch (queue) { 902 case IEEE80211_AC_VO: 903 idx = VO_Q; 904 break; 905 case IEEE80211_AC_VI: 906 idx = VI_Q; 907 break; 908 case IEEE80211_AC_BE: 909 idx = BE_Q; 910 break; 911 case IEEE80211_AC_BK: 912 idx = BK_Q; 913 break; 914 default: 915 idx = BE_Q; 916 break; 917 } 918 919 memcpy(&common->edca_params[idx], 920 params, 921 sizeof(struct ieee80211_tx_queue_params)); 922 923 if (params->uapsd) 924 common->uapsd_bitmap |= idx; 925 else 926 common->uapsd_bitmap &= (~idx); 927 928 mutex_unlock(&common->mutex); 929 930 return 0; 931 } 932 933 /** 934 * rsi_hal_key_config() - This function loads the keys into the firmware. 935 * @hw: Pointer to the ieee80211_hw structure. 936 * @vif: Pointer to the ieee80211_vif structure. 937 * @key: Pointer to the ieee80211_key_conf structure. 938 * 939 * Return: status: 0 on success, negative error codes on failure. 940 */ 941 static int rsi_hal_key_config(struct ieee80211_hw *hw, 942 struct ieee80211_vif *vif, 943 struct ieee80211_key_conf *key, 944 struct ieee80211_sta *sta) 945 { 946 struct rsi_hw *adapter = hw->priv; 947 struct rsi_sta *rsta = NULL; 948 int status; 949 u8 key_type; 950 s16 sta_id = 0; 951 952 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 953 key_type = RSI_PAIRWISE_KEY; 954 else 955 key_type = RSI_GROUP_KEY; 956 957 rsi_dbg(ERR_ZONE, "%s: Cipher 0x%x key_type: %d key_len: %d\n", 958 __func__, key->cipher, key_type, key->keylen); 959 960 if ((vif->type == NL80211_IFTYPE_AP) || 961 (vif->type == NL80211_IFTYPE_P2P_GO)) { 962 if (sta) { 963 rsta = rsi_find_sta(adapter->priv, sta->addr); 964 if (rsta) 965 sta_id = rsta->sta_id; 966 } 967 adapter->priv->key = key; 968 } else { 969 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) || 970 (key->cipher == WLAN_CIPHER_SUITE_WEP40)) { 971 status = rsi_hal_load_key(adapter->priv, 972 key->key, 973 key->keylen, 974 RSI_PAIRWISE_KEY, 975 key->keyidx, 976 key->cipher, 977 sta_id, 978 vif); 979 if (status) 980 return status; 981 } 982 } 983 984 status = rsi_hal_load_key(adapter->priv, 985 key->key, 986 key->keylen, 987 key_type, 988 key->keyidx, 989 key->cipher, 990 sta_id, 991 vif); 992 if (status) 993 return status; 994 995 if (vif->type == NL80211_IFTYPE_STATION && 996 (key->cipher == WLAN_CIPHER_SUITE_WEP104 || 997 key->cipher == WLAN_CIPHER_SUITE_WEP40)) { 998 if (!rsi_send_block_unblock_frame(adapter->priv, false)) 999 adapter->priv->hw_data_qs_blocked = false; 1000 } 1001 1002 return 0; 1003 } 1004 1005 /** 1006 * rsi_mac80211_set_key() - This function sets type of key to be loaded. 1007 * @hw: Pointer to the ieee80211_hw structure. 1008 * @cmd: enum set_key_cmd. 1009 * @vif: Pointer to the ieee80211_vif structure. 1010 * @sta: Pointer to the ieee80211_sta structure. 1011 * @key: Pointer to the ieee80211_key_conf structure. 1012 * 1013 * Return: status: 0 on success, negative error code on failure. 1014 */ 1015 static int rsi_mac80211_set_key(struct ieee80211_hw *hw, 1016 enum set_key_cmd cmd, 1017 struct ieee80211_vif *vif, 1018 struct ieee80211_sta *sta, 1019 struct ieee80211_key_conf *key) 1020 { 1021 struct rsi_hw *adapter = hw->priv; 1022 struct rsi_common *common = adapter->priv; 1023 struct security_info *secinfo = &common->secinfo; 1024 int status; 1025 1026 mutex_lock(&common->mutex); 1027 switch (cmd) { 1028 case SET_KEY: 1029 secinfo->security_enable = true; 1030 status = rsi_hal_key_config(hw, vif, key, sta); 1031 if (status) { 1032 mutex_unlock(&common->mutex); 1033 return status; 1034 } 1035 1036 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 1037 secinfo->ptk_cipher = key->cipher; 1038 else 1039 secinfo->gtk_cipher = key->cipher; 1040 1041 key->hw_key_idx = key->keyidx; 1042 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 1043 1044 rsi_dbg(ERR_ZONE, "%s: RSI set_key\n", __func__); 1045 break; 1046 1047 case DISABLE_KEY: 1048 if (vif->type == NL80211_IFTYPE_STATION) 1049 secinfo->security_enable = false; 1050 rsi_dbg(ERR_ZONE, "%s: RSI del key\n", __func__); 1051 memset(key, 0, sizeof(struct ieee80211_key_conf)); 1052 status = rsi_hal_key_config(hw, vif, key, sta); 1053 break; 1054 1055 default: 1056 status = -EOPNOTSUPP; 1057 break; 1058 } 1059 1060 mutex_unlock(&common->mutex); 1061 return status; 1062 } 1063 1064 /** 1065 * rsi_mac80211_ampdu_action() - This function selects the AMPDU action for 1066 * the corresponding mlme_action flag and 1067 * informs the f/w regarding this. 1068 * @hw: Pointer to the ieee80211_hw structure. 1069 * @vif: Pointer to the ieee80211_vif structure. 1070 * @params: Pointer to A-MPDU action parameters 1071 * 1072 * Return: status: 0 on success, negative error code on failure. 1073 */ 1074 static int rsi_mac80211_ampdu_action(struct ieee80211_hw *hw, 1075 struct ieee80211_vif *vif, 1076 struct ieee80211_ampdu_params *params) 1077 { 1078 int status = -EOPNOTSUPP; 1079 struct rsi_hw *adapter = hw->priv; 1080 struct rsi_common *common = adapter->priv; 1081 struct rsi_sta *rsta = NULL; 1082 u16 seq_no = 0, seq_start = 0; 1083 u8 ii = 0; 1084 struct ieee80211_sta *sta = params->sta; 1085 u8 sta_id = 0; 1086 enum ieee80211_ampdu_mlme_action action = params->action; 1087 u16 tid = params->tid; 1088 u16 *ssn = ¶ms->ssn; 1089 u8 buf_size = params->buf_size; 1090 1091 for (ii = 0; ii < RSI_MAX_VIFS; ii++) { 1092 if (vif == adapter->vifs[ii]) 1093 break; 1094 } 1095 1096 mutex_lock(&common->mutex); 1097 1098 if (ssn != NULL) 1099 seq_no = *ssn; 1100 1101 if ((vif->type == NL80211_IFTYPE_AP) || 1102 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1103 rsta = rsi_find_sta(common, sta->addr); 1104 if (!rsta) { 1105 rsi_dbg(ERR_ZONE, "No station mapped\n"); 1106 status = 0; 1107 goto unlock; 1108 } 1109 sta_id = rsta->sta_id; 1110 } 1111 1112 rsi_dbg(INFO_ZONE, 1113 "%s: AMPDU action tid=%d ssn=0x%x, buf_size=%d sta_id=%d\n", 1114 __func__, tid, seq_no, buf_size, sta_id); 1115 1116 switch (action) { 1117 case IEEE80211_AMPDU_RX_START: 1118 status = rsi_send_aggregation_params_frame(common, 1119 tid, 1120 seq_no, 1121 buf_size, 1122 STA_RX_ADDBA_DONE, 1123 sta_id); 1124 break; 1125 1126 case IEEE80211_AMPDU_RX_STOP: 1127 status = rsi_send_aggregation_params_frame(common, 1128 tid, 1129 0, 1130 buf_size, 1131 STA_RX_DELBA, 1132 sta_id); 1133 break; 1134 1135 case IEEE80211_AMPDU_TX_START: 1136 if ((vif->type == NL80211_IFTYPE_STATION) || 1137 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) 1138 common->vif_info[ii].seq_start = seq_no; 1139 else if ((vif->type == NL80211_IFTYPE_AP) || 1140 (vif->type == NL80211_IFTYPE_P2P_GO)) 1141 rsta->seq_start[tid] = seq_no; 1142 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1143 status = 0; 1144 break; 1145 1146 case IEEE80211_AMPDU_TX_STOP_CONT: 1147 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1148 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1149 status = rsi_send_aggregation_params_frame(common, 1150 tid, 1151 seq_no, 1152 buf_size, 1153 STA_TX_DELBA, 1154 sta_id); 1155 if (!status) 1156 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1157 break; 1158 1159 case IEEE80211_AMPDU_TX_OPERATIONAL: 1160 if ((vif->type == NL80211_IFTYPE_STATION) || 1161 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) 1162 seq_start = common->vif_info[ii].seq_start; 1163 else if ((vif->type == NL80211_IFTYPE_AP) || 1164 (vif->type == NL80211_IFTYPE_P2P_GO)) 1165 seq_start = rsta->seq_start[tid]; 1166 status = rsi_send_aggregation_params_frame(common, 1167 tid, 1168 seq_start, 1169 buf_size, 1170 STA_TX_ADDBA_DONE, 1171 sta_id); 1172 break; 1173 1174 default: 1175 rsi_dbg(ERR_ZONE, "%s: Unknown AMPDU action\n", __func__); 1176 break; 1177 } 1178 1179 unlock: 1180 mutex_unlock(&common->mutex); 1181 return status; 1182 } 1183 1184 /** 1185 * rsi_mac80211_set_rts_threshold() - This function sets rts threshold value. 1186 * @hw: Pointer to the ieee80211_hw structure. 1187 * @value: Rts threshold value. 1188 * 1189 * Return: 0 on success. 1190 */ 1191 static int rsi_mac80211_set_rts_threshold(struct ieee80211_hw *hw, 1192 u32 value) 1193 { 1194 struct rsi_hw *adapter = hw->priv; 1195 struct rsi_common *common = adapter->priv; 1196 1197 mutex_lock(&common->mutex); 1198 common->rts_threshold = value; 1199 mutex_unlock(&common->mutex); 1200 1201 return 0; 1202 } 1203 1204 /** 1205 * rsi_mac80211_set_rate_mask() - This function sets bitrate_mask to be used. 1206 * @hw: Pointer to the ieee80211_hw structure 1207 * @vif: Pointer to the ieee80211_vif structure. 1208 * @mask: Pointer to the cfg80211_bitrate_mask structure. 1209 * 1210 * Return: 0 on success. 1211 */ 1212 static int rsi_mac80211_set_rate_mask(struct ieee80211_hw *hw, 1213 struct ieee80211_vif *vif, 1214 const struct cfg80211_bitrate_mask *mask) 1215 { 1216 struct rsi_hw *adapter = hw->priv; 1217 struct rsi_common *common = adapter->priv; 1218 enum nl80211_band band = hw->conf.chandef.chan->band; 1219 1220 mutex_lock(&common->mutex); 1221 common->fixedrate_mask[band] = 0; 1222 1223 if (mask->control[band].legacy == 0xfff) { 1224 common->fixedrate_mask[band] = 1225 (mask->control[band].ht_mcs[0] << 12); 1226 } else { 1227 common->fixedrate_mask[band] = 1228 mask->control[band].legacy; 1229 } 1230 mutex_unlock(&common->mutex); 1231 1232 return 0; 1233 } 1234 1235 /** 1236 * rsi_perform_cqm() - This function performs cqm. 1237 * @common: Pointer to the driver private structure. 1238 * @bssid: pointer to the bssid. 1239 * @rssi: RSSI value. 1240 */ 1241 static void rsi_perform_cqm(struct rsi_common *common, 1242 u8 *bssid, 1243 s8 rssi, 1244 struct ieee80211_vif *vif) 1245 { 1246 s8 last_event = common->cqm_info.last_cqm_event_rssi; 1247 int thold = common->cqm_info.rssi_thold; 1248 u32 hyst = common->cqm_info.rssi_hyst; 1249 enum nl80211_cqm_rssi_threshold_event event; 1250 1251 if (rssi < thold && (last_event == 0 || rssi < (last_event - hyst))) 1252 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW; 1253 else if (rssi > thold && 1254 (last_event == 0 || rssi > (last_event + hyst))) 1255 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH; 1256 else 1257 return; 1258 1259 common->cqm_info.last_cqm_event_rssi = rssi; 1260 rsi_dbg(INFO_ZONE, "CQM: Notifying event: %d\n", event); 1261 ieee80211_cqm_rssi_notify(vif, event, rssi, GFP_KERNEL); 1262 1263 return; 1264 } 1265 1266 /** 1267 * rsi_fill_rx_status() - This function fills rx status in 1268 * ieee80211_rx_status structure. 1269 * @hw: Pointer to the ieee80211_hw structure. 1270 * @skb: Pointer to the socket buffer structure. 1271 * @common: Pointer to the driver private structure. 1272 * @rxs: Pointer to the ieee80211_rx_status structure. 1273 * 1274 * Return: None. 1275 */ 1276 static void rsi_fill_rx_status(struct ieee80211_hw *hw, 1277 struct sk_buff *skb, 1278 struct rsi_common *common, 1279 struct ieee80211_rx_status *rxs) 1280 { 1281 struct rsi_hw *adapter = common->priv; 1282 struct ieee80211_vif *vif; 1283 struct ieee80211_bss_conf *bss = NULL; 1284 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 1285 struct skb_info *rx_params = (struct skb_info *)info->driver_data; 1286 struct ieee80211_hdr *hdr; 1287 char rssi = rx_params->rssi; 1288 u8 hdrlen = 0; 1289 u8 channel = rx_params->channel; 1290 s32 freq; 1291 int i; 1292 1293 hdr = ((struct ieee80211_hdr *)(skb->data)); 1294 hdrlen = ieee80211_hdrlen(hdr->frame_control); 1295 1296 memset(info, 0, sizeof(struct ieee80211_tx_info)); 1297 1298 rxs->signal = -(rssi); 1299 1300 rxs->band = common->band; 1301 1302 freq = ieee80211_channel_to_frequency(channel, rxs->band); 1303 1304 if (freq) 1305 rxs->freq = freq; 1306 1307 if (ieee80211_has_protected(hdr->frame_control)) { 1308 if (rsi_is_cipher_wep(common)) { 1309 memmove(skb->data + 4, skb->data, hdrlen); 1310 skb_pull(skb, 4); 1311 } else { 1312 memmove(skb->data + 8, skb->data, hdrlen); 1313 skb_pull(skb, 8); 1314 rxs->flag |= RX_FLAG_MMIC_STRIPPED; 1315 } 1316 rxs->flag |= RX_FLAG_DECRYPTED; 1317 rxs->flag |= RX_FLAG_IV_STRIPPED; 1318 } 1319 1320 for (i = 0; i < RSI_MAX_VIFS; i++) { 1321 vif = adapter->vifs[i]; 1322 if (!vif) 1323 continue; 1324 if (vif->type == NL80211_IFTYPE_STATION) { 1325 bss = &vif->bss_conf; 1326 break; 1327 } 1328 } 1329 if (!bss) 1330 return; 1331 /* CQM only for connected AP beacons, the RSSI is a weighted avg */ 1332 if (bss->assoc && !(memcmp(bss->bssid, hdr->addr2, ETH_ALEN))) { 1333 if (ieee80211_is_beacon(hdr->frame_control)) 1334 rsi_perform_cqm(common, hdr->addr2, rxs->signal, vif); 1335 } 1336 1337 return; 1338 } 1339 1340 /** 1341 * rsi_indicate_pkt_to_os() - This function sends received packet to mac80211. 1342 * @common: Pointer to the driver private structure. 1343 * @skb: Pointer to the socket buffer structure. 1344 * 1345 * Return: None. 1346 */ 1347 void rsi_indicate_pkt_to_os(struct rsi_common *common, 1348 struct sk_buff *skb) 1349 { 1350 struct rsi_hw *adapter = common->priv; 1351 struct ieee80211_hw *hw = adapter->hw; 1352 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); 1353 1354 if ((common->iface_down) || (!adapter->sc_nvifs)) { 1355 dev_kfree_skb(skb); 1356 return; 1357 } 1358 1359 /* filling in the ieee80211_rx_status flags */ 1360 rsi_fill_rx_status(hw, skb, common, rx_status); 1361 1362 ieee80211_rx_irqsafe(hw, skb); 1363 } 1364 1365 static void rsi_set_min_rate(struct ieee80211_hw *hw, 1366 struct ieee80211_sta *sta, 1367 struct rsi_common *common) 1368 { 1369 u8 band = hw->conf.chandef.chan->band; 1370 u8 ii; 1371 u32 rate_bitmap; 1372 bool matched = false; 1373 1374 common->bitrate_mask[band] = sta->supp_rates[band]; 1375 1376 rate_bitmap = (common->fixedrate_mask[band] & sta->supp_rates[band]); 1377 1378 if (rate_bitmap & 0xfff) { 1379 /* Find out the min rate */ 1380 for (ii = 0; ii < ARRAY_SIZE(rsi_rates); ii++) { 1381 if (rate_bitmap & BIT(ii)) { 1382 common->min_rate = rsi_rates[ii].hw_value; 1383 matched = true; 1384 break; 1385 } 1386 } 1387 } 1388 1389 common->vif_info[0].is_ht = sta->ht_cap.ht_supported; 1390 1391 if ((common->vif_info[0].is_ht) && (rate_bitmap >> 12)) { 1392 for (ii = 0; ii < ARRAY_SIZE(rsi_mcsrates); ii++) { 1393 if ((rate_bitmap >> 12) & BIT(ii)) { 1394 common->min_rate = rsi_mcsrates[ii]; 1395 matched = true; 1396 break; 1397 } 1398 } 1399 } 1400 1401 if (!matched) 1402 common->min_rate = 0xffff; 1403 } 1404 1405 /** 1406 * rsi_mac80211_sta_add() - This function notifies driver about a peer getting 1407 * connected. 1408 * @hw: pointer to the ieee80211_hw structure. 1409 * @vif: Pointer to the ieee80211_vif structure. 1410 * @sta: Pointer to the ieee80211_sta structure. 1411 * 1412 * Return: 0 on success, negative error codes on failure. 1413 */ 1414 static int rsi_mac80211_sta_add(struct ieee80211_hw *hw, 1415 struct ieee80211_vif *vif, 1416 struct ieee80211_sta *sta) 1417 { 1418 struct rsi_hw *adapter = hw->priv; 1419 struct rsi_common *common = adapter->priv; 1420 bool sta_exist = false; 1421 struct rsi_sta *rsta; 1422 int status = 0; 1423 1424 rsi_dbg(INFO_ZONE, "Station Add: %pM\n", sta->addr); 1425 1426 mutex_lock(&common->mutex); 1427 1428 if ((vif->type == NL80211_IFTYPE_AP) || 1429 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1430 u8 cnt; 1431 int sta_idx = -1; 1432 int free_index = -1; 1433 1434 /* Check if max stations reached */ 1435 if (common->num_stations >= common->max_stations) { 1436 rsi_dbg(ERR_ZONE, "Reject: Max Stations exists\n"); 1437 status = -EOPNOTSUPP; 1438 goto unlock; 1439 } 1440 for (cnt = 0; cnt < common->max_stations; cnt++) { 1441 rsta = &common->stations[cnt]; 1442 1443 if (!rsta->sta) { 1444 if (free_index < 0) 1445 free_index = cnt; 1446 continue; 1447 } 1448 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) { 1449 rsi_dbg(INFO_ZONE, "Station exists\n"); 1450 sta_idx = cnt; 1451 sta_exist = true; 1452 break; 1453 } 1454 } 1455 if (!sta_exist) { 1456 if (free_index >= 0) 1457 sta_idx = free_index; 1458 } 1459 if (sta_idx < 0) { 1460 rsi_dbg(ERR_ZONE, 1461 "%s: Some problem reaching here...\n", 1462 __func__); 1463 status = -EINVAL; 1464 goto unlock; 1465 } 1466 rsta = &common->stations[sta_idx]; 1467 rsta->sta = sta; 1468 rsta->sta_id = sta_idx; 1469 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++) 1470 rsta->start_tx_aggr[cnt] = false; 1471 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++) 1472 rsta->seq_start[cnt] = 0; 1473 if (!sta_exist) { 1474 rsi_dbg(INFO_ZONE, "New Station\n"); 1475 1476 /* Send peer notify to device */ 1477 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n"); 1478 rsi_inform_bss_status(common, RSI_OPMODE_AP, 1, 1479 sta->addr, sta->wme, sta->aid, 1480 sta, sta_idx, 0, vif); 1481 1482 if (common->key) { 1483 struct ieee80211_key_conf *key = common->key; 1484 1485 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) || 1486 (key->cipher == WLAN_CIPHER_SUITE_WEP40)) 1487 rsi_hal_load_key(adapter->priv, 1488 key->key, 1489 key->keylen, 1490 RSI_PAIRWISE_KEY, 1491 key->keyidx, 1492 key->cipher, 1493 sta_idx, 1494 vif); 1495 } 1496 1497 common->num_stations++; 1498 } 1499 } 1500 1501 if ((vif->type == NL80211_IFTYPE_STATION) || 1502 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) { 1503 rsi_set_min_rate(hw, sta, common); 1504 if (sta->ht_cap.ht_supported) { 1505 common->vif_info[0].is_ht = true; 1506 common->bitrate_mask[NL80211_BAND_2GHZ] = 1507 sta->supp_rates[NL80211_BAND_2GHZ]; 1508 if ((sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) || 1509 (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40)) 1510 common->vif_info[0].sgi = true; 1511 ieee80211_start_tx_ba_session(sta, 0, 0); 1512 } 1513 } 1514 1515 unlock: 1516 mutex_unlock(&common->mutex); 1517 1518 return status; 1519 } 1520 1521 /** 1522 * rsi_mac80211_sta_remove() - This function notifies driver about a peer 1523 * getting disconnected. 1524 * @hw: Pointer to the ieee80211_hw structure. 1525 * @vif: Pointer to the ieee80211_vif structure. 1526 * @sta: Pointer to the ieee80211_sta structure. 1527 * 1528 * Return: 0 on success, negative error codes on failure. 1529 */ 1530 static int rsi_mac80211_sta_remove(struct ieee80211_hw *hw, 1531 struct ieee80211_vif *vif, 1532 struct ieee80211_sta *sta) 1533 { 1534 struct rsi_hw *adapter = hw->priv; 1535 struct rsi_common *common = adapter->priv; 1536 struct ieee80211_bss_conf *bss = &vif->bss_conf; 1537 struct rsi_sta *rsta; 1538 1539 rsi_dbg(INFO_ZONE, "Station Remove: %pM\n", sta->addr); 1540 1541 mutex_lock(&common->mutex); 1542 1543 if ((vif->type == NL80211_IFTYPE_AP) || 1544 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1545 u8 sta_idx, cnt; 1546 1547 /* Send peer notify to device */ 1548 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n"); 1549 for (sta_idx = 0; sta_idx < common->max_stations; sta_idx++) { 1550 rsta = &common->stations[sta_idx]; 1551 1552 if (!rsta->sta) 1553 continue; 1554 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) { 1555 rsi_inform_bss_status(common, RSI_OPMODE_AP, 0, 1556 sta->addr, sta->wme, 1557 sta->aid, sta, sta_idx, 1558 0, vif); 1559 rsta->sta = NULL; 1560 rsta->sta_id = -1; 1561 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++) 1562 rsta->start_tx_aggr[cnt] = false; 1563 if (common->num_stations > 0) 1564 common->num_stations--; 1565 break; 1566 } 1567 } 1568 if (sta_idx >= common->max_stations) 1569 rsi_dbg(ERR_ZONE, "%s: No station found\n", __func__); 1570 } 1571 1572 if ((vif->type == NL80211_IFTYPE_STATION) || 1573 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) { 1574 /* Resetting all the fields to default values */ 1575 memcpy((u8 *)bss->bssid, (u8 *)sta->addr, ETH_ALEN); 1576 bss->qos = sta->wme; 1577 common->bitrate_mask[NL80211_BAND_2GHZ] = 0; 1578 common->bitrate_mask[NL80211_BAND_5GHZ] = 0; 1579 common->min_rate = 0xffff; 1580 common->vif_info[0].is_ht = false; 1581 common->vif_info[0].sgi = false; 1582 common->vif_info[0].seq_start = 0; 1583 common->secinfo.ptk_cipher = 0; 1584 common->secinfo.gtk_cipher = 0; 1585 if (!common->iface_down) 1586 rsi_send_rx_filter_frame(common, 0); 1587 } 1588 mutex_unlock(&common->mutex); 1589 1590 return 0; 1591 } 1592 1593 /** 1594 * rsi_mac80211_set_antenna() - This function is used to configure 1595 * tx and rx antennas. 1596 * @hw: Pointer to the ieee80211_hw structure. 1597 * @tx_ant: Bitmap for tx antenna 1598 * @rx_ant: Bitmap for rx antenna 1599 * 1600 * Return: 0 on success, Negative error code on failure. 1601 */ 1602 static int rsi_mac80211_set_antenna(struct ieee80211_hw *hw, 1603 u32 tx_ant, u32 rx_ant) 1604 { 1605 struct rsi_hw *adapter = hw->priv; 1606 struct rsi_common *common = adapter->priv; 1607 u8 antenna = 0; 1608 1609 if (tx_ant > 1 || rx_ant > 1) { 1610 rsi_dbg(ERR_ZONE, 1611 "Invalid antenna selection (tx: %d, rx:%d)\n", 1612 tx_ant, rx_ant); 1613 rsi_dbg(ERR_ZONE, 1614 "Use 0 for int_ant, 1 for ext_ant\n"); 1615 return -EINVAL; 1616 } 1617 1618 rsi_dbg(INFO_ZONE, "%s: Antenna map Tx %x Rx %d\n", 1619 __func__, tx_ant, rx_ant); 1620 1621 mutex_lock(&common->mutex); 1622 1623 antenna = tx_ant ? ANTENNA_SEL_UFL : ANTENNA_SEL_INT; 1624 if (common->ant_in_use != antenna) 1625 if (rsi_set_antenna(common, antenna)) 1626 goto fail_set_antenna; 1627 1628 rsi_dbg(INFO_ZONE, "(%s) Antenna path configured successfully\n", 1629 tx_ant ? "UFL" : "INT"); 1630 1631 common->ant_in_use = antenna; 1632 1633 mutex_unlock(&common->mutex); 1634 1635 return 0; 1636 1637 fail_set_antenna: 1638 rsi_dbg(ERR_ZONE, "%s: Failed.\n", __func__); 1639 mutex_unlock(&common->mutex); 1640 return -EINVAL; 1641 } 1642 1643 /** 1644 * rsi_mac80211_get_antenna() - This function is used to configure 1645 * tx and rx antennas. 1646 * 1647 * @hw: Pointer to the ieee80211_hw structure. 1648 * @tx_ant: Bitmap for tx antenna 1649 * @rx_ant: Bitmap for rx antenna 1650 * 1651 * Return: 0 on success, negative error codes on failure. 1652 */ 1653 static int rsi_mac80211_get_antenna(struct ieee80211_hw *hw, 1654 u32 *tx_ant, u32 *rx_ant) 1655 { 1656 struct rsi_hw *adapter = hw->priv; 1657 struct rsi_common *common = adapter->priv; 1658 1659 mutex_lock(&common->mutex); 1660 1661 *tx_ant = (common->ant_in_use == ANTENNA_SEL_UFL) ? 1 : 0; 1662 *rx_ant = 0; 1663 1664 mutex_unlock(&common->mutex); 1665 1666 return 0; 1667 } 1668 1669 static int rsi_map_region_code(enum nl80211_dfs_regions region_code) 1670 { 1671 switch (region_code) { 1672 case NL80211_DFS_FCC: 1673 return RSI_REGION_FCC; 1674 case NL80211_DFS_ETSI: 1675 return RSI_REGION_ETSI; 1676 case NL80211_DFS_JP: 1677 return RSI_REGION_TELEC; 1678 case NL80211_DFS_UNSET: 1679 return RSI_REGION_WORLD; 1680 } 1681 return RSI_REGION_WORLD; 1682 } 1683 1684 static void rsi_reg_notify(struct wiphy *wiphy, 1685 struct regulatory_request *request) 1686 { 1687 struct ieee80211_supported_band *sband; 1688 struct ieee80211_channel *ch; 1689 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 1690 struct rsi_hw * adapter = hw->priv; 1691 struct rsi_common *common = adapter->priv; 1692 int i; 1693 1694 mutex_lock(&common->mutex); 1695 1696 rsi_dbg(INFO_ZONE, "country = %s dfs_region = %d\n", 1697 request->alpha2, request->dfs_region); 1698 1699 if (common->num_supp_bands > 1) { 1700 sband = wiphy->bands[NL80211_BAND_5GHZ]; 1701 1702 for (i = 0; i < sband->n_channels; i++) { 1703 ch = &sband->channels[i]; 1704 if (ch->flags & IEEE80211_CHAN_DISABLED) 1705 continue; 1706 1707 if (ch->flags & IEEE80211_CHAN_RADAR) 1708 ch->flags |= IEEE80211_CHAN_NO_IR; 1709 } 1710 } 1711 adapter->dfs_region = rsi_map_region_code(request->dfs_region); 1712 rsi_dbg(INFO_ZONE, "RSI region code = %d\n", adapter->dfs_region); 1713 1714 adapter->country[0] = request->alpha2[0]; 1715 adapter->country[1] = request->alpha2[1]; 1716 1717 mutex_unlock(&common->mutex); 1718 } 1719 1720 static void rsi_mac80211_rfkill_poll(struct ieee80211_hw *hw) 1721 { 1722 struct rsi_hw *adapter = hw->priv; 1723 struct rsi_common *common = adapter->priv; 1724 1725 mutex_lock(&common->mutex); 1726 if (common->fsm_state != FSM_MAC_INIT_DONE) 1727 wiphy_rfkill_set_hw_state(hw->wiphy, true); 1728 else 1729 wiphy_rfkill_set_hw_state(hw->wiphy, false); 1730 mutex_unlock(&common->mutex); 1731 } 1732 1733 static void rsi_resume_conn_channel(struct rsi_common *common) 1734 { 1735 struct rsi_hw *adapter = common->priv; 1736 struct ieee80211_vif *vif; 1737 int cnt; 1738 1739 for (cnt = 0; cnt < RSI_MAX_VIFS; cnt++) { 1740 vif = adapter->vifs[cnt]; 1741 if (!vif) 1742 continue; 1743 1744 if ((vif->type == NL80211_IFTYPE_AP) || 1745 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1746 rsi_switch_channel(adapter, vif); 1747 break; 1748 } 1749 if (((vif->type == NL80211_IFTYPE_STATION) || 1750 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) && 1751 vif->bss_conf.assoc) { 1752 rsi_switch_channel(adapter, vif); 1753 break; 1754 } 1755 } 1756 } 1757 1758 void rsi_roc_timeout(struct timer_list *t) 1759 { 1760 struct rsi_common *common = from_timer(common, t, roc_timer); 1761 1762 rsi_dbg(INFO_ZONE, "Remain on channel expired\n"); 1763 1764 mutex_lock(&common->mutex); 1765 ieee80211_remain_on_channel_expired(common->priv->hw); 1766 1767 if (timer_pending(&common->roc_timer)) 1768 del_timer(&common->roc_timer); 1769 1770 rsi_resume_conn_channel(common); 1771 mutex_unlock(&common->mutex); 1772 } 1773 1774 static int rsi_mac80211_roc(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1775 struct ieee80211_channel *chan, int duration, 1776 enum ieee80211_roc_type type) 1777 { 1778 struct rsi_hw *adapter = (struct rsi_hw *)hw->priv; 1779 struct rsi_common *common = (struct rsi_common *)adapter->priv; 1780 int status = 0; 1781 1782 rsi_dbg(INFO_ZONE, "***** Remain on channel *****\n"); 1783 1784 mutex_lock(&common->mutex); 1785 rsi_dbg(INFO_ZONE, "%s: channel: %d duration: %dms\n", 1786 __func__, chan->hw_value, duration); 1787 1788 if (timer_pending(&common->roc_timer)) { 1789 rsi_dbg(INFO_ZONE, "Stop on-going ROC\n"); 1790 del_timer(&common->roc_timer); 1791 } 1792 common->roc_timer.expires = msecs_to_jiffies(duration) + jiffies; 1793 add_timer(&common->roc_timer); 1794 1795 /* Configure band */ 1796 if (rsi_band_check(common, chan)) { 1797 rsi_dbg(ERR_ZONE, "Failed to set band\n"); 1798 status = -EINVAL; 1799 goto out; 1800 } 1801 1802 /* Configure channel */ 1803 if (rsi_set_channel(common, chan)) { 1804 rsi_dbg(ERR_ZONE, "Failed to set the channel\n"); 1805 status = -EINVAL; 1806 goto out; 1807 } 1808 1809 common->roc_vif = vif; 1810 ieee80211_ready_on_channel(hw); 1811 rsi_dbg(INFO_ZONE, "%s: Ready on channel :%d\n", 1812 __func__, chan->hw_value); 1813 1814 out: 1815 mutex_unlock(&common->mutex); 1816 1817 return status; 1818 } 1819 1820 static int rsi_mac80211_cancel_roc(struct ieee80211_hw *hw) 1821 { 1822 struct rsi_hw *adapter = hw->priv; 1823 struct rsi_common *common = adapter->priv; 1824 1825 rsi_dbg(INFO_ZONE, "Cancel remain on channel\n"); 1826 1827 mutex_lock(&common->mutex); 1828 if (!timer_pending(&common->roc_timer)) { 1829 mutex_unlock(&common->mutex); 1830 return 0; 1831 } 1832 1833 del_timer(&common->roc_timer); 1834 1835 rsi_resume_conn_channel(common); 1836 mutex_unlock(&common->mutex); 1837 1838 return 0; 1839 } 1840 1841 #ifdef CONFIG_PM 1842 static const struct wiphy_wowlan_support rsi_wowlan_support = { 1843 .flags = WIPHY_WOWLAN_ANY | 1844 WIPHY_WOWLAN_MAGIC_PKT | 1845 WIPHY_WOWLAN_DISCONNECT | 1846 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 1847 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 1848 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 1849 WIPHY_WOWLAN_4WAY_HANDSHAKE, 1850 }; 1851 1852 static u16 rsi_wow_map_triggers(struct rsi_common *common, 1853 struct cfg80211_wowlan *wowlan) 1854 { 1855 u16 wow_triggers = 0; 1856 1857 rsi_dbg(INFO_ZONE, "Mapping wowlan triggers\n"); 1858 1859 if (wowlan->any) 1860 wow_triggers |= RSI_WOW_ANY; 1861 if (wowlan->magic_pkt) 1862 wow_triggers |= RSI_WOW_MAGIC_PKT; 1863 if (wowlan->disconnect) 1864 wow_triggers |= RSI_WOW_DISCONNECT; 1865 if (wowlan->gtk_rekey_failure || wowlan->eap_identity_req || 1866 wowlan->four_way_handshake) 1867 wow_triggers |= RSI_WOW_GTK_REKEY; 1868 1869 return wow_triggers; 1870 } 1871 1872 int rsi_config_wowlan(struct rsi_hw *adapter, struct cfg80211_wowlan *wowlan) 1873 { 1874 struct rsi_common *common = adapter->priv; 1875 u16 triggers = 0; 1876 u16 rx_filter_word = 0; 1877 struct ieee80211_bss_conf *bss = NULL; 1878 1879 rsi_dbg(INFO_ZONE, "Config WoWLAN to device\n"); 1880 1881 if (!adapter->vifs[0]) 1882 return -EINVAL; 1883 1884 bss = &adapter->vifs[0]->bss_conf; 1885 1886 if (WARN_ON(!wowlan)) { 1887 rsi_dbg(ERR_ZONE, "WoW triggers not enabled\n"); 1888 return -EINVAL; 1889 } 1890 1891 common->wow_flags |= RSI_WOW_ENABLED; 1892 triggers = rsi_wow_map_triggers(common, wowlan); 1893 if (!triggers) { 1894 rsi_dbg(ERR_ZONE, "%s:No valid WoW triggers\n", __func__); 1895 return -EINVAL; 1896 } 1897 if (!bss->assoc) { 1898 rsi_dbg(ERR_ZONE, 1899 "Cannot configure WoWLAN (Station not connected)\n"); 1900 common->wow_flags |= RSI_WOW_NO_CONNECTION; 1901 return 0; 1902 } 1903 rsi_dbg(INFO_ZONE, "TRIGGERS %x\n", triggers); 1904 1905 if (common->coex_mode > 1) 1906 rsi_disable_ps(adapter, adapter->vifs[0]); 1907 1908 rsi_send_wowlan_request(common, triggers, 1); 1909 1910 /** 1911 * Increase the beacon_miss threshold & keep-alive timers in 1912 * vap_update frame 1913 */ 1914 rsi_send_vap_dynamic_update(common); 1915 1916 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | DISALLOW_BEACONS); 1917 rsi_send_rx_filter_frame(common, rx_filter_word); 1918 1919 return 0; 1920 } 1921 EXPORT_SYMBOL(rsi_config_wowlan); 1922 1923 static int rsi_mac80211_suspend(struct ieee80211_hw *hw, 1924 struct cfg80211_wowlan *wowlan) 1925 { 1926 struct rsi_hw *adapter = hw->priv; 1927 struct rsi_common *common = adapter->priv; 1928 1929 rsi_dbg(INFO_ZONE, "%s: mac80211 suspend\n", __func__); 1930 mutex_lock(&common->mutex); 1931 if (rsi_config_wowlan(adapter, wowlan)) { 1932 rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n"); 1933 mutex_unlock(&common->mutex); 1934 return 1; 1935 } 1936 mutex_unlock(&common->mutex); 1937 1938 return 0; 1939 } 1940 1941 static int rsi_mac80211_resume(struct ieee80211_hw *hw) 1942 { 1943 u16 rx_filter_word = 0; 1944 struct rsi_hw *adapter = hw->priv; 1945 struct rsi_common *common = adapter->priv; 1946 1947 common->wow_flags = 0; 1948 1949 rsi_dbg(INFO_ZONE, "%s: mac80211 resume\n", __func__); 1950 1951 if (common->hibernate_resume) { 1952 common->mac_ops_resumed = true; 1953 /* Device need a complete restart of all MAC operations. 1954 * returning 1 will serve this purpose. 1955 */ 1956 return 1; 1957 } 1958 1959 mutex_lock(&common->mutex); 1960 rsi_send_wowlan_request(common, 0, 0); 1961 1962 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | ALLOW_CTRL_ASSOC_PEER | 1963 ALLOW_MGMT_ASSOC_PEER); 1964 rsi_send_rx_filter_frame(common, rx_filter_word); 1965 mutex_unlock(&common->mutex); 1966 1967 return 0; 1968 } 1969 1970 #endif 1971 1972 static const struct ieee80211_ops mac80211_ops = { 1973 .tx = rsi_mac80211_tx, 1974 .start = rsi_mac80211_start, 1975 .stop = rsi_mac80211_stop, 1976 .add_interface = rsi_mac80211_add_interface, 1977 .remove_interface = rsi_mac80211_remove_interface, 1978 .config = rsi_mac80211_config, 1979 .bss_info_changed = rsi_mac80211_bss_info_changed, 1980 .conf_tx = rsi_mac80211_conf_tx, 1981 .configure_filter = rsi_mac80211_conf_filter, 1982 .set_key = rsi_mac80211_set_key, 1983 .set_rts_threshold = rsi_mac80211_set_rts_threshold, 1984 .set_bitrate_mask = rsi_mac80211_set_rate_mask, 1985 .ampdu_action = rsi_mac80211_ampdu_action, 1986 .sta_add = rsi_mac80211_sta_add, 1987 .sta_remove = rsi_mac80211_sta_remove, 1988 .set_antenna = rsi_mac80211_set_antenna, 1989 .get_antenna = rsi_mac80211_get_antenna, 1990 .rfkill_poll = rsi_mac80211_rfkill_poll, 1991 .remain_on_channel = rsi_mac80211_roc, 1992 .cancel_remain_on_channel = rsi_mac80211_cancel_roc, 1993 #ifdef CONFIG_PM 1994 .suspend = rsi_mac80211_suspend, 1995 .resume = rsi_mac80211_resume, 1996 #endif 1997 .hw_scan = rsi_mac80211_hw_scan_start, 1998 .cancel_hw_scan = rsi_mac80211_cancel_hw_scan, 1999 }; 2000 2001 /** 2002 * rsi_mac80211_attach() - This function is used to initialize Mac80211 stack. 2003 * @common: Pointer to the driver private structure. 2004 * 2005 * Return: 0 on success, negative error codes on failure. 2006 */ 2007 int rsi_mac80211_attach(struct rsi_common *common) 2008 { 2009 int status = 0; 2010 struct ieee80211_hw *hw = NULL; 2011 struct wiphy *wiphy = NULL; 2012 struct rsi_hw *adapter = common->priv; 2013 u8 addr_mask[ETH_ALEN] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x3}; 2014 2015 rsi_dbg(INIT_ZONE, "%s: Performing mac80211 attach\n", __func__); 2016 2017 hw = ieee80211_alloc_hw(sizeof(struct rsi_hw), &mac80211_ops); 2018 if (!hw) { 2019 rsi_dbg(ERR_ZONE, "%s: ieee80211 hw alloc failed\n", __func__); 2020 return -ENOMEM; 2021 } 2022 2023 wiphy = hw->wiphy; 2024 2025 SET_IEEE80211_DEV(hw, adapter->device); 2026 2027 hw->priv = adapter; 2028 adapter->hw = hw; 2029 2030 ieee80211_hw_set(hw, SIGNAL_DBM); 2031 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 2032 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 2033 ieee80211_hw_set(hw, SUPPORTS_PS); 2034 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 2035 2036 hw->queues = MAX_HW_QUEUES; 2037 hw->extra_tx_headroom = RSI_NEEDED_HEADROOM; 2038 2039 hw->max_rates = 1; 2040 hw->max_rate_tries = MAX_RETRIES; 2041 hw->uapsd_queues = RSI_IEEE80211_UAPSD_QUEUES; 2042 hw->uapsd_max_sp_len = IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL; 2043 2044 hw->max_tx_aggregation_subframes = RSI_MAX_TX_AGGR_FRMS; 2045 hw->max_rx_aggregation_subframes = RSI_MAX_RX_AGGR_FRMS; 2046 hw->rate_control_algorithm = "AARF"; 2047 2048 SET_IEEE80211_PERM_ADDR(hw, common->mac_addr); 2049 ether_addr_copy(hw->wiphy->addr_mask, addr_mask); 2050 2051 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 2052 BIT(NL80211_IFTYPE_AP) | 2053 BIT(NL80211_IFTYPE_P2P_DEVICE) | 2054 BIT(NL80211_IFTYPE_P2P_CLIENT) | 2055 BIT(NL80211_IFTYPE_P2P_GO); 2056 2057 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; 2058 wiphy->retry_short = RETRY_SHORT; 2059 wiphy->retry_long = RETRY_LONG; 2060 wiphy->frag_threshold = IEEE80211_MAX_FRAG_THRESHOLD; 2061 wiphy->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 2062 wiphy->flags = 0; 2063 2064 wiphy->available_antennas_rx = 1; 2065 wiphy->available_antennas_tx = 1; 2066 2067 rsi_register_rates_channels(adapter, NL80211_BAND_2GHZ); 2068 wiphy->bands[NL80211_BAND_2GHZ] = 2069 &adapter->sbands[NL80211_BAND_2GHZ]; 2070 if (common->num_supp_bands > 1) { 2071 rsi_register_rates_channels(adapter, NL80211_BAND_5GHZ); 2072 wiphy->bands[NL80211_BAND_5GHZ] = 2073 &adapter->sbands[NL80211_BAND_5GHZ]; 2074 } 2075 2076 /* AP Parameters */ 2077 wiphy->max_ap_assoc_sta = rsi_max_ap_stas[common->oper_mode - 1]; 2078 common->max_stations = wiphy->max_ap_assoc_sta; 2079 rsi_dbg(ERR_ZONE, "Max Stations Allowed = %d\n", common->max_stations); 2080 hw->sta_data_size = sizeof(struct rsi_sta); 2081 2082 wiphy->max_scan_ssids = RSI_MAX_SCAN_SSIDS; 2083 wiphy->max_scan_ie_len = RSI_MAX_SCAN_IE_LEN; 2084 wiphy->flags = WIPHY_FLAG_REPORTS_OBSS; 2085 wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 2086 wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER; 2087 wiphy->reg_notifier = rsi_reg_notify; 2088 2089 #ifdef CONFIG_PM 2090 wiphy->wowlan = &rsi_wowlan_support; 2091 #endif 2092 2093 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 2094 2095 /* Wi-Fi direct parameters */ 2096 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; 2097 wiphy->flags |= WIPHY_FLAG_OFFCHAN_TX; 2098 wiphy->max_remain_on_channel_duration = 10000; 2099 hw->max_listen_interval = 10; 2100 wiphy->iface_combinations = rsi_iface_combinations; 2101 wiphy->n_iface_combinations = ARRAY_SIZE(rsi_iface_combinations); 2102 2103 if (common->coex_mode > 1) 2104 wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 2105 2106 status = ieee80211_register_hw(hw); 2107 if (status) 2108 return status; 2109 2110 return rsi_init_dbgfs(adapter); 2111 } 2112