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: int - 0 on success, negative error on failure. 192 */ 193 static int 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 = kmemdup(rsi_2ghz_channels, sizeof(rsi_2ghz_channels), 200 GFP_KERNEL); 201 if (!channels) 202 return -ENOMEM; 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 = kmemdup(rsi_5ghz_channels, sizeof(rsi_5ghz_channels), 209 GFP_KERNEL); 210 if (!channels) 211 return -ENOMEM; 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 return 0; 231 } 232 233 static int rsi_mac80211_hw_scan_start(struct ieee80211_hw *hw, 234 struct ieee80211_vif *vif, 235 struct ieee80211_scan_request *hw_req) 236 { 237 struct cfg80211_scan_request *scan_req = &hw_req->req; 238 struct rsi_hw *adapter = hw->priv; 239 struct rsi_common *common = adapter->priv; 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 (!vif->cfg.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 for (i = 0; i < common->max_stations; i++) 513 common->stations[i].sta = NULL; 514 } 515 516 mutex_unlock(&common->mutex); 517 518 return 0; 519 } 520 521 /** 522 * rsi_mac80211_remove_interface() - This function notifies driver that an 523 * interface is going down. 524 * @hw: Pointer to the ieee80211_hw structure. 525 * @vif: Pointer to the ieee80211_vif structure. 526 * 527 * Return: None. 528 */ 529 static void rsi_mac80211_remove_interface(struct ieee80211_hw *hw, 530 struct ieee80211_vif *vif) 531 { 532 struct rsi_hw *adapter = hw->priv; 533 struct rsi_common *common = adapter->priv; 534 enum opmode opmode; 535 int i; 536 537 rsi_dbg(INFO_ZONE, "Remove Interface Called\n"); 538 539 mutex_lock(&common->mutex); 540 541 if (adapter->sc_nvifs <= 0) { 542 mutex_unlock(&common->mutex); 543 return; 544 } 545 546 opmode = rsi_map_intf_mode(vif->type); 547 if (opmode == RSI_OPMODE_UNSUPPORTED) { 548 rsi_dbg(ERR_ZONE, "Opmode error : %d\n", opmode); 549 mutex_unlock(&common->mutex); 550 return; 551 } 552 for (i = 0; i < RSI_MAX_VIFS; i++) { 553 if (!adapter->vifs[i]) 554 continue; 555 if (vif == adapter->vifs[i]) { 556 rsi_set_vap_capabilities(common, opmode, vif->addr, 557 i, VAP_DELETE); 558 adapter->sc_nvifs--; 559 adapter->vifs[i] = NULL; 560 } 561 } 562 mutex_unlock(&common->mutex); 563 } 564 565 /** 566 * rsi_channel_change() - This function is a performs the checks 567 * required for changing a channel and sets 568 * the channel accordingly. 569 * @hw: Pointer to the ieee80211_hw structure. 570 * 571 * Return: 0 on success, negative error code on failure. 572 */ 573 static int rsi_channel_change(struct ieee80211_hw *hw) 574 { 575 struct rsi_hw *adapter = hw->priv; 576 struct rsi_common *common = adapter->priv; 577 int status = -EOPNOTSUPP; 578 struct ieee80211_channel *curchan = hw->conf.chandef.chan; 579 u16 channel = curchan->hw_value; 580 struct ieee80211_vif *vif; 581 bool assoc = false; 582 int i; 583 584 rsi_dbg(INFO_ZONE, 585 "%s: Set channel: %d MHz type: %d channel_no %d\n", 586 __func__, curchan->center_freq, 587 curchan->flags, channel); 588 589 for (i = 0; i < RSI_MAX_VIFS; i++) { 590 vif = adapter->vifs[i]; 591 if (!vif) 592 continue; 593 if (vif->type == NL80211_IFTYPE_STATION) { 594 if (vif->cfg.assoc) { 595 assoc = true; 596 break; 597 } 598 } 599 } 600 if (assoc) { 601 if (!common->hw_data_qs_blocked && 602 (rsi_get_connected_channel(vif) != channel)) { 603 rsi_dbg(INFO_ZONE, "blk data q %d\n", channel); 604 if (!rsi_send_block_unblock_frame(common, true)) 605 common->hw_data_qs_blocked = true; 606 } 607 } 608 609 status = rsi_band_check(common, curchan); 610 if (!status) 611 status = rsi_set_channel(adapter->priv, curchan); 612 613 if (assoc) { 614 if (common->hw_data_qs_blocked && 615 (rsi_get_connected_channel(vif) == channel)) { 616 rsi_dbg(INFO_ZONE, "unblk data q %d\n", channel); 617 if (!rsi_send_block_unblock_frame(common, false)) 618 common->hw_data_qs_blocked = false; 619 } 620 } 621 622 return status; 623 } 624 625 /** 626 * rsi_config_power() - This function configures tx power to device 627 * @hw: Pointer to the ieee80211_hw structure. 628 * 629 * Return: 0 on success, negative error code on failure. 630 */ 631 static int rsi_config_power(struct ieee80211_hw *hw) 632 { 633 struct rsi_hw *adapter = hw->priv; 634 struct rsi_common *common = adapter->priv; 635 struct ieee80211_conf *conf = &hw->conf; 636 637 if (adapter->sc_nvifs <= 0) { 638 rsi_dbg(ERR_ZONE, "%s: No virtual interface found\n", __func__); 639 return -EINVAL; 640 } 641 642 rsi_dbg(INFO_ZONE, 643 "%s: Set tx power: %d dBM\n", __func__, conf->power_level); 644 645 if (conf->power_level == common->tx_power) 646 return 0; 647 648 common->tx_power = conf->power_level; 649 650 return rsi_send_radio_params_update(common); 651 } 652 653 /** 654 * rsi_mac80211_config() - This function is a handler for configuration 655 * requests. The stack calls this function to 656 * change hardware configuration, e.g., channel. 657 * @hw: Pointer to the ieee80211_hw structure. 658 * @changed: Changed flags set. 659 * 660 * Return: 0 on success, negative error code on failure. 661 */ 662 static int rsi_mac80211_config(struct ieee80211_hw *hw, 663 u32 changed) 664 { 665 struct rsi_hw *adapter = hw->priv; 666 struct rsi_common *common = adapter->priv; 667 struct ieee80211_conf *conf = &hw->conf; 668 int status = -EOPNOTSUPP; 669 670 mutex_lock(&common->mutex); 671 672 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) 673 status = rsi_channel_change(hw); 674 675 /* tx power */ 676 if (changed & IEEE80211_CONF_CHANGE_POWER) { 677 rsi_dbg(INFO_ZONE, "%s: Configuring Power\n", __func__); 678 status = rsi_config_power(hw); 679 } 680 681 /* Power save parameters */ 682 if ((changed & IEEE80211_CONF_CHANGE_PS) && 683 !common->mac_ops_resumed) { 684 struct ieee80211_vif *vif, *sta_vif = NULL; 685 unsigned long flags; 686 int i, set_ps = 1; 687 688 for (i = 0; i < RSI_MAX_VIFS; i++) { 689 vif = adapter->vifs[i]; 690 if (!vif) 691 continue; 692 /* Don't go to power save if AP vap exists */ 693 if ((vif->type == NL80211_IFTYPE_AP) || 694 (vif->type == NL80211_IFTYPE_P2P_GO)) { 695 set_ps = 0; 696 break; 697 } 698 if ((vif->type == NL80211_IFTYPE_STATION || 699 vif->type == NL80211_IFTYPE_P2P_CLIENT) && 700 (!sta_vif || vif->cfg.assoc)) 701 sta_vif = vif; 702 } 703 if (set_ps && sta_vif) { 704 spin_lock_irqsave(&adapter->ps_lock, flags); 705 if (conf->flags & IEEE80211_CONF_PS) 706 rsi_enable_ps(adapter, sta_vif); 707 else 708 rsi_disable_ps(adapter, sta_vif); 709 spin_unlock_irqrestore(&adapter->ps_lock, flags); 710 } 711 } 712 713 /* RTS threshold */ 714 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 715 rsi_dbg(INFO_ZONE, "RTS threshold\n"); 716 if ((common->rts_threshold) <= IEEE80211_MAX_RTS_THRESHOLD) { 717 rsi_dbg(INFO_ZONE, 718 "%s: Sending vap updates....\n", __func__); 719 status = rsi_send_vap_dynamic_update(common); 720 } 721 } 722 mutex_unlock(&common->mutex); 723 724 return status; 725 } 726 727 /** 728 * rsi_get_connected_channel() - This function is used to get the current 729 * connected channel number. 730 * @vif: Pointer to the ieee80211_vif structure. 731 * 732 * Return: Current connected AP's channel number is returned. 733 */ 734 u16 rsi_get_connected_channel(struct ieee80211_vif *vif) 735 { 736 struct ieee80211_bss_conf *bss; 737 struct ieee80211_channel *channel; 738 739 if (!vif) 740 return 0; 741 742 bss = &vif->bss_conf; 743 channel = bss->chandef.chan; 744 745 if (!channel) 746 return 0; 747 748 return channel->hw_value; 749 } 750 751 static void rsi_switch_channel(struct rsi_hw *adapter, 752 struct ieee80211_vif *vif) 753 { 754 struct rsi_common *common = adapter->priv; 755 struct ieee80211_channel *channel; 756 757 if (common->iface_down) 758 return; 759 if (!vif) 760 return; 761 762 channel = vif->bss_conf.chandef.chan; 763 764 if (!channel) 765 return; 766 767 rsi_band_check(common, channel); 768 rsi_set_channel(common, channel); 769 rsi_dbg(INFO_ZONE, "Switched to channel - %d\n", channel->hw_value); 770 } 771 772 /** 773 * rsi_mac80211_bss_info_changed() - This function is a handler for config 774 * requests related to BSS parameters that 775 * may vary during BSS's lifespan. 776 * @hw: Pointer to the ieee80211_hw structure. 777 * @vif: Pointer to the ieee80211_vif structure. 778 * @bss_conf: Pointer to the ieee80211_bss_conf structure. 779 * @changed: Changed flags set. 780 * 781 * Return: None. 782 */ 783 static void rsi_mac80211_bss_info_changed(struct ieee80211_hw *hw, 784 struct ieee80211_vif *vif, 785 struct ieee80211_bss_conf *bss_conf, 786 u64 changed) 787 { 788 struct rsi_hw *adapter = hw->priv; 789 struct rsi_common *common = adapter->priv; 790 struct ieee80211_bss_conf *bss = &vif->bss_conf; 791 struct ieee80211_conf *conf = &hw->conf; 792 u16 rx_filter_word = 0; 793 794 mutex_lock(&common->mutex); 795 if (changed & BSS_CHANGED_ASSOC) { 796 rsi_dbg(INFO_ZONE, "%s: Changed Association status: %d\n", 797 __func__, vif->cfg.assoc); 798 if (vif->cfg.assoc) { 799 /* Send the RX filter frame */ 800 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | 801 ALLOW_CTRL_ASSOC_PEER | 802 ALLOW_MGMT_ASSOC_PEER); 803 rsi_send_rx_filter_frame(common, rx_filter_word); 804 } 805 rsi_inform_bss_status(common, 806 RSI_OPMODE_STA, 807 vif->cfg.assoc, 808 bss_conf->bssid, 809 bss_conf->qos, 810 vif->cfg.aid, 811 NULL, 0, 812 bss_conf->assoc_capability, vif); 813 adapter->ps_info.dtim_interval_duration = bss->dtim_period; 814 adapter->ps_info.listen_interval = conf->listen_interval; 815 816 /* If U-APSD is updated, send ps parameters to firmware */ 817 if (vif->cfg.assoc) { 818 if (common->uapsd_bitmap) { 819 rsi_dbg(INFO_ZONE, "Configuring UAPSD\n"); 820 rsi_conf_uapsd(adapter, vif); 821 } 822 } else { 823 common->uapsd_bitmap = 0; 824 } 825 } 826 827 if (changed & BSS_CHANGED_CQM) { 828 common->cqm_info.last_cqm_event_rssi = 0; 829 common->cqm_info.rssi_thold = bss_conf->cqm_rssi_thold; 830 common->cqm_info.rssi_hyst = bss_conf->cqm_rssi_hyst; 831 rsi_dbg(INFO_ZONE, "RSSI threshold & hysteresis are: %d %d\n", 832 common->cqm_info.rssi_thold, 833 common->cqm_info.rssi_hyst); 834 } 835 836 if (changed & BSS_CHANGED_BEACON_INT) { 837 rsi_dbg(INFO_ZONE, "%s: Changed Beacon interval: %d\n", 838 __func__, bss_conf->beacon_int); 839 if (common->beacon_interval != bss->beacon_int) { 840 common->beacon_interval = bss->beacon_int; 841 if (vif->type == NL80211_IFTYPE_AP) { 842 struct vif_priv *vif_info = (struct vif_priv *)vif->drv_priv; 843 844 rsi_set_vap_capabilities(common, RSI_OPMODE_AP, 845 vif->addr, vif_info->vap_id, 846 VAP_UPDATE); 847 } 848 } 849 adapter->ps_info.listen_interval = 850 bss->beacon_int * adapter->ps_info.num_bcns_per_lis_int; 851 } 852 853 if ((changed & BSS_CHANGED_BEACON_ENABLED) && 854 ((vif->type == NL80211_IFTYPE_AP) || 855 (vif->type == NL80211_IFTYPE_P2P_GO))) { 856 if (bss->enable_beacon) { 857 rsi_dbg(INFO_ZONE, "===> BEACON ENABLED <===\n"); 858 common->beacon_enabled = 1; 859 } else { 860 rsi_dbg(INFO_ZONE, "===> BEACON DISABLED <===\n"); 861 common->beacon_enabled = 0; 862 } 863 } 864 865 mutex_unlock(&common->mutex); 866 } 867 868 /** 869 * rsi_mac80211_conf_filter() - This function configure the device's RX filter. 870 * @hw: Pointer to the ieee80211_hw structure. 871 * @changed_flags: Changed flags set. 872 * @total_flags: Total initial flags set. 873 * @multicast: Multicast. 874 * 875 * Return: None. 876 */ 877 static void rsi_mac80211_conf_filter(struct ieee80211_hw *hw, 878 u32 changed_flags, 879 u32 *total_flags, 880 u64 multicast) 881 { 882 /* Not doing much here as of now */ 883 *total_flags &= RSI_SUPP_FILTERS; 884 } 885 886 /** 887 * rsi_mac80211_conf_tx() - This function configures TX queue parameters 888 * (EDCF (aifs, cw_min, cw_max), bursting) 889 * for a hardware TX queue. 890 * @hw: Pointer to the ieee80211_hw structure 891 * @vif: Pointer to the ieee80211_vif structure. 892 * @queue: Queue number. 893 * @params: Pointer to ieee80211_tx_queue_params structure. 894 * 895 * Return: 0 on success, negative error code on failure. 896 */ 897 static int rsi_mac80211_conf_tx(struct ieee80211_hw *hw, 898 struct ieee80211_vif *vif, 899 unsigned int link_id, u16 queue, 900 const struct ieee80211_tx_queue_params *params) 901 { 902 struct rsi_hw *adapter = hw->priv; 903 struct rsi_common *common = adapter->priv; 904 u8 idx = 0; 905 906 if (queue >= IEEE80211_NUM_ACS) 907 return 0; 908 909 rsi_dbg(INFO_ZONE, 910 "%s: Conf queue %d, aifs: %d, cwmin: %d cwmax: %d, txop: %d\n", 911 __func__, queue, params->aifs, 912 params->cw_min, params->cw_max, params->txop); 913 914 mutex_lock(&common->mutex); 915 /* Map into the way the f/w expects */ 916 switch (queue) { 917 case IEEE80211_AC_VO: 918 idx = VO_Q; 919 break; 920 case IEEE80211_AC_VI: 921 idx = VI_Q; 922 break; 923 case IEEE80211_AC_BE: 924 idx = BE_Q; 925 break; 926 case IEEE80211_AC_BK: 927 idx = BK_Q; 928 break; 929 default: 930 idx = BE_Q; 931 break; 932 } 933 934 memcpy(&common->edca_params[idx], 935 params, 936 sizeof(struct ieee80211_tx_queue_params)); 937 938 if (params->uapsd) 939 common->uapsd_bitmap |= idx; 940 else 941 common->uapsd_bitmap &= (~idx); 942 943 mutex_unlock(&common->mutex); 944 945 return 0; 946 } 947 948 /** 949 * rsi_hal_key_config() - This function loads the keys into the firmware. 950 * @hw: Pointer to the ieee80211_hw structure. 951 * @vif: Pointer to the ieee80211_vif structure. 952 * @key: Pointer to the ieee80211_key_conf structure. 953 * @sta: Pointer to the ieee80211_sta structure. 954 * 955 * Return: status: 0 on success, negative error codes on failure. 956 */ 957 static int rsi_hal_key_config(struct ieee80211_hw *hw, 958 struct ieee80211_vif *vif, 959 struct ieee80211_key_conf *key, 960 struct ieee80211_sta *sta) 961 { 962 struct rsi_hw *adapter = hw->priv; 963 struct rsi_sta *rsta = NULL; 964 int status; 965 u8 key_type; 966 s16 sta_id = 0; 967 968 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 969 key_type = RSI_PAIRWISE_KEY; 970 else 971 key_type = RSI_GROUP_KEY; 972 973 rsi_dbg(ERR_ZONE, "%s: Cipher 0x%x key_type: %d key_len: %d\n", 974 __func__, key->cipher, key_type, key->keylen); 975 976 if ((vif->type == NL80211_IFTYPE_AP) || 977 (vif->type == NL80211_IFTYPE_P2P_GO)) { 978 if (sta) { 979 rsta = rsi_find_sta(adapter->priv, sta->addr); 980 if (rsta) 981 sta_id = rsta->sta_id; 982 } 983 adapter->priv->key = key; 984 } else { 985 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) || 986 (key->cipher == WLAN_CIPHER_SUITE_WEP40)) { 987 status = rsi_hal_load_key(adapter->priv, 988 key->key, 989 key->keylen, 990 RSI_PAIRWISE_KEY, 991 key->keyidx, 992 key->cipher, 993 sta_id, 994 vif); 995 if (status) 996 return status; 997 } 998 } 999 1000 status = rsi_hal_load_key(adapter->priv, 1001 key->key, 1002 key->keylen, 1003 key_type, 1004 key->keyidx, 1005 key->cipher, 1006 sta_id, 1007 vif); 1008 if (status) 1009 return status; 1010 1011 if (vif->type == NL80211_IFTYPE_STATION && 1012 (key->cipher == WLAN_CIPHER_SUITE_WEP104 || 1013 key->cipher == WLAN_CIPHER_SUITE_WEP40)) { 1014 if (!rsi_send_block_unblock_frame(adapter->priv, false)) 1015 adapter->priv->hw_data_qs_blocked = false; 1016 } 1017 1018 return 0; 1019 } 1020 1021 /** 1022 * rsi_mac80211_set_key() - This function sets type of key to be loaded. 1023 * @hw: Pointer to the ieee80211_hw structure. 1024 * @cmd: enum set_key_cmd. 1025 * @vif: Pointer to the ieee80211_vif structure. 1026 * @sta: Pointer to the ieee80211_sta structure. 1027 * @key: Pointer to the ieee80211_key_conf structure. 1028 * 1029 * Return: status: 0 on success, negative error code on failure. 1030 */ 1031 static int rsi_mac80211_set_key(struct ieee80211_hw *hw, 1032 enum set_key_cmd cmd, 1033 struct ieee80211_vif *vif, 1034 struct ieee80211_sta *sta, 1035 struct ieee80211_key_conf *key) 1036 { 1037 struct rsi_hw *adapter = hw->priv; 1038 struct rsi_common *common = adapter->priv; 1039 struct security_info *secinfo = &common->secinfo; 1040 int status; 1041 1042 mutex_lock(&common->mutex); 1043 switch (cmd) { 1044 case SET_KEY: 1045 status = rsi_hal_key_config(hw, vif, key, sta); 1046 if (status) { 1047 mutex_unlock(&common->mutex); 1048 return status; 1049 } 1050 1051 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 1052 secinfo->ptk_cipher = key->cipher; 1053 else 1054 secinfo->gtk_cipher = key->cipher; 1055 1056 key->hw_key_idx = key->keyidx; 1057 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 1058 1059 rsi_dbg(ERR_ZONE, "%s: RSI set_key\n", __func__); 1060 break; 1061 1062 case DISABLE_KEY: 1063 rsi_dbg(ERR_ZONE, "%s: RSI del key\n", __func__); 1064 memset(key, 0, sizeof(struct ieee80211_key_conf)); 1065 status = rsi_hal_key_config(hw, vif, key, sta); 1066 break; 1067 1068 default: 1069 status = -EOPNOTSUPP; 1070 break; 1071 } 1072 1073 mutex_unlock(&common->mutex); 1074 return status; 1075 } 1076 1077 /** 1078 * rsi_mac80211_ampdu_action() - This function selects the AMPDU action for 1079 * the corresponding mlme_action flag and 1080 * informs the f/w regarding this. 1081 * @hw: Pointer to the ieee80211_hw structure. 1082 * @vif: Pointer to the ieee80211_vif structure. 1083 * @params: Pointer to A-MPDU action parameters 1084 * 1085 * Return: status: 0 on success, negative error code on failure. 1086 */ 1087 static int rsi_mac80211_ampdu_action(struct ieee80211_hw *hw, 1088 struct ieee80211_vif *vif, 1089 struct ieee80211_ampdu_params *params) 1090 { 1091 int status = -EOPNOTSUPP; 1092 struct rsi_hw *adapter = hw->priv; 1093 struct rsi_common *common = adapter->priv; 1094 struct rsi_sta *rsta = NULL; 1095 u16 seq_no = 0, seq_start = 0; 1096 u8 ii = 0; 1097 struct ieee80211_sta *sta = params->sta; 1098 u8 sta_id = 0; 1099 enum ieee80211_ampdu_mlme_action action = params->action; 1100 u16 tid = params->tid; 1101 u16 *ssn = ¶ms->ssn; 1102 u8 buf_size = params->buf_size; 1103 1104 for (ii = 0; ii < RSI_MAX_VIFS; ii++) { 1105 if (vif == adapter->vifs[ii]) 1106 break; 1107 } 1108 1109 if (ii >= RSI_MAX_VIFS) 1110 return status; 1111 1112 mutex_lock(&common->mutex); 1113 1114 if (ssn != NULL) 1115 seq_no = *ssn; 1116 1117 if ((vif->type == NL80211_IFTYPE_AP) || 1118 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1119 rsta = rsi_find_sta(common, sta->addr); 1120 if (!rsta) { 1121 rsi_dbg(ERR_ZONE, "No station mapped\n"); 1122 status = 0; 1123 goto unlock; 1124 } 1125 sta_id = rsta->sta_id; 1126 } 1127 1128 rsi_dbg(INFO_ZONE, 1129 "%s: AMPDU action tid=%d ssn=0x%x, buf_size=%d sta_id=%d\n", 1130 __func__, tid, seq_no, buf_size, sta_id); 1131 1132 switch (action) { 1133 case IEEE80211_AMPDU_RX_START: 1134 status = rsi_send_aggregation_params_frame(common, 1135 tid, 1136 seq_no, 1137 buf_size, 1138 STA_RX_ADDBA_DONE, 1139 sta_id); 1140 break; 1141 1142 case IEEE80211_AMPDU_RX_STOP: 1143 status = rsi_send_aggregation_params_frame(common, 1144 tid, 1145 0, 1146 buf_size, 1147 STA_RX_DELBA, 1148 sta_id); 1149 break; 1150 1151 case IEEE80211_AMPDU_TX_START: 1152 if ((vif->type == NL80211_IFTYPE_STATION) || 1153 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) 1154 common->vif_info[ii].seq_start = seq_no; 1155 else if ((vif->type == NL80211_IFTYPE_AP) || 1156 (vif->type == NL80211_IFTYPE_P2P_GO)) 1157 rsta->seq_start[tid] = seq_no; 1158 status = IEEE80211_AMPDU_TX_START_IMMEDIATE; 1159 break; 1160 1161 case IEEE80211_AMPDU_TX_STOP_CONT: 1162 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1163 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1164 status = rsi_send_aggregation_params_frame(common, 1165 tid, 1166 seq_no, 1167 buf_size, 1168 STA_TX_DELBA, 1169 sta_id); 1170 if (!status) 1171 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1172 break; 1173 1174 case IEEE80211_AMPDU_TX_OPERATIONAL: 1175 if ((vif->type == NL80211_IFTYPE_STATION) || 1176 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) 1177 seq_start = common->vif_info[ii].seq_start; 1178 else if ((vif->type == NL80211_IFTYPE_AP) || 1179 (vif->type == NL80211_IFTYPE_P2P_GO)) 1180 seq_start = rsta->seq_start[tid]; 1181 status = rsi_send_aggregation_params_frame(common, 1182 tid, 1183 seq_start, 1184 buf_size, 1185 STA_TX_ADDBA_DONE, 1186 sta_id); 1187 break; 1188 1189 default: 1190 rsi_dbg(ERR_ZONE, "%s: Unknown AMPDU action\n", __func__); 1191 break; 1192 } 1193 1194 unlock: 1195 mutex_unlock(&common->mutex); 1196 return status; 1197 } 1198 1199 /** 1200 * rsi_mac80211_set_rts_threshold() - This function sets rts threshold value. 1201 * @hw: Pointer to the ieee80211_hw structure. 1202 * @value: Rts threshold value. 1203 * 1204 * Return: 0 on success. 1205 */ 1206 static int rsi_mac80211_set_rts_threshold(struct ieee80211_hw *hw, 1207 u32 value) 1208 { 1209 struct rsi_hw *adapter = hw->priv; 1210 struct rsi_common *common = adapter->priv; 1211 1212 mutex_lock(&common->mutex); 1213 common->rts_threshold = value; 1214 mutex_unlock(&common->mutex); 1215 1216 return 0; 1217 } 1218 1219 /** 1220 * rsi_mac80211_set_rate_mask() - This function sets bitrate_mask to be used. 1221 * @hw: Pointer to the ieee80211_hw structure 1222 * @vif: Pointer to the ieee80211_vif structure. 1223 * @mask: Pointer to the cfg80211_bitrate_mask structure. 1224 * 1225 * Return: 0 on success. 1226 */ 1227 static int rsi_mac80211_set_rate_mask(struct ieee80211_hw *hw, 1228 struct ieee80211_vif *vif, 1229 const struct cfg80211_bitrate_mask *mask) 1230 { 1231 const unsigned int mcs_offset = ARRAY_SIZE(rsi_rates); 1232 struct rsi_hw *adapter = hw->priv; 1233 struct rsi_common *common = adapter->priv; 1234 int i; 1235 1236 mutex_lock(&common->mutex); 1237 1238 for (i = 0; i < ARRAY_SIZE(common->rate_config); i++) { 1239 struct rsi_rate_config *cfg = &common->rate_config[i]; 1240 u32 bm; 1241 1242 bm = mask->control[i].legacy | (mask->control[i].ht_mcs[0] << mcs_offset); 1243 if (hweight32(bm) == 1) { /* single rate */ 1244 int rate_index = ffs(bm) - 1; 1245 1246 if (rate_index < mcs_offset) 1247 cfg->fixed_hw_rate = rsi_rates[rate_index].hw_value; 1248 else 1249 cfg->fixed_hw_rate = rsi_mcsrates[rate_index - mcs_offset]; 1250 cfg->fixed_enabled = true; 1251 } else { 1252 cfg->configured_mask = bm; 1253 cfg->fixed_enabled = false; 1254 } 1255 } 1256 1257 mutex_unlock(&common->mutex); 1258 1259 return 0; 1260 } 1261 1262 /** 1263 * rsi_perform_cqm() - This function performs cqm. 1264 * @common: Pointer to the driver private structure. 1265 * @bssid: pointer to the bssid. 1266 * @rssi: RSSI value. 1267 * @vif: Pointer to the ieee80211_vif structure. 1268 */ 1269 static void rsi_perform_cqm(struct rsi_common *common, 1270 u8 *bssid, 1271 s8 rssi, 1272 struct ieee80211_vif *vif) 1273 { 1274 s8 last_event = common->cqm_info.last_cqm_event_rssi; 1275 int thold = common->cqm_info.rssi_thold; 1276 u32 hyst = common->cqm_info.rssi_hyst; 1277 enum nl80211_cqm_rssi_threshold_event event; 1278 1279 if (rssi < thold && (last_event == 0 || rssi < (last_event - hyst))) 1280 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW; 1281 else if (rssi > thold && 1282 (last_event == 0 || rssi > (last_event + hyst))) 1283 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH; 1284 else 1285 return; 1286 1287 common->cqm_info.last_cqm_event_rssi = rssi; 1288 rsi_dbg(INFO_ZONE, "CQM: Notifying event: %d\n", event); 1289 ieee80211_cqm_rssi_notify(vif, event, rssi, GFP_KERNEL); 1290 1291 return; 1292 } 1293 1294 /** 1295 * rsi_fill_rx_status() - This function fills rx status in 1296 * ieee80211_rx_status structure. 1297 * @hw: Pointer to the ieee80211_hw structure. 1298 * @skb: Pointer to the socket buffer structure. 1299 * @common: Pointer to the driver private structure. 1300 * @rxs: Pointer to the ieee80211_rx_status structure. 1301 * 1302 * Return: None. 1303 */ 1304 static void rsi_fill_rx_status(struct ieee80211_hw *hw, 1305 struct sk_buff *skb, 1306 struct rsi_common *common, 1307 struct ieee80211_rx_status *rxs) 1308 { 1309 struct rsi_hw *adapter = common->priv; 1310 struct ieee80211_vif *vif; 1311 struct ieee80211_bss_conf *bss = NULL; 1312 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 1313 struct skb_info *rx_params = (struct skb_info *)info->driver_data; 1314 struct ieee80211_hdr *hdr; 1315 char rssi = rx_params->rssi; 1316 u8 hdrlen = 0; 1317 u8 channel = rx_params->channel; 1318 s32 freq; 1319 int i; 1320 1321 hdr = ((struct ieee80211_hdr *)(skb->data)); 1322 hdrlen = ieee80211_hdrlen(hdr->frame_control); 1323 1324 memset(info, 0, sizeof(struct ieee80211_tx_info)); 1325 1326 rxs->signal = -(rssi); 1327 1328 rxs->band = common->band; 1329 1330 freq = ieee80211_channel_to_frequency(channel, rxs->band); 1331 1332 if (freq) 1333 rxs->freq = freq; 1334 1335 if (ieee80211_has_protected(hdr->frame_control)) { 1336 if (rsi_is_cipher_wep(common)) { 1337 memmove(skb->data + 4, skb->data, hdrlen); 1338 skb_pull(skb, 4); 1339 } else { 1340 memmove(skb->data + 8, skb->data, hdrlen); 1341 skb_pull(skb, 8); 1342 rxs->flag |= RX_FLAG_MMIC_STRIPPED; 1343 } 1344 rxs->flag |= RX_FLAG_DECRYPTED; 1345 rxs->flag |= RX_FLAG_IV_STRIPPED; 1346 } 1347 1348 for (i = 0; i < RSI_MAX_VIFS; i++) { 1349 vif = adapter->vifs[i]; 1350 if (!vif) 1351 continue; 1352 if (vif->type == NL80211_IFTYPE_STATION) { 1353 bss = &vif->bss_conf; 1354 break; 1355 } 1356 } 1357 if (!bss) 1358 return; 1359 /* CQM only for connected AP beacons, the RSSI is a weighted avg */ 1360 if (vif->cfg.assoc && !(memcmp(bss->bssid, hdr->addr2, ETH_ALEN))) { 1361 if (ieee80211_is_beacon(hdr->frame_control)) 1362 rsi_perform_cqm(common, hdr->addr2, rxs->signal, vif); 1363 } 1364 1365 return; 1366 } 1367 1368 /** 1369 * rsi_indicate_pkt_to_os() - This function sends received packet to mac80211. 1370 * @common: Pointer to the driver private structure. 1371 * @skb: Pointer to the socket buffer structure. 1372 * 1373 * Return: None. 1374 */ 1375 void rsi_indicate_pkt_to_os(struct rsi_common *common, 1376 struct sk_buff *skb) 1377 { 1378 struct rsi_hw *adapter = common->priv; 1379 struct ieee80211_hw *hw = adapter->hw; 1380 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); 1381 1382 if ((common->iface_down) || (!adapter->sc_nvifs)) { 1383 dev_kfree_skb(skb); 1384 return; 1385 } 1386 1387 /* filling in the ieee80211_rx_status flags */ 1388 rsi_fill_rx_status(hw, skb, common, rx_status); 1389 1390 ieee80211_rx_irqsafe(hw, skb); 1391 } 1392 1393 /** 1394 * rsi_mac80211_sta_add() - This function notifies driver about a peer getting 1395 * connected. 1396 * @hw: pointer to the ieee80211_hw structure. 1397 * @vif: Pointer to the ieee80211_vif structure. 1398 * @sta: Pointer to the ieee80211_sta structure. 1399 * 1400 * Return: 0 on success, negative error codes on failure. 1401 */ 1402 static int rsi_mac80211_sta_add(struct ieee80211_hw *hw, 1403 struct ieee80211_vif *vif, 1404 struct ieee80211_sta *sta) 1405 { 1406 struct rsi_hw *adapter = hw->priv; 1407 struct rsi_common *common = adapter->priv; 1408 bool sta_exist = false; 1409 struct rsi_sta *rsta; 1410 int status = 0; 1411 1412 rsi_dbg(INFO_ZONE, "Station Add: %pM\n", sta->addr); 1413 1414 mutex_lock(&common->mutex); 1415 1416 if ((vif->type == NL80211_IFTYPE_AP) || 1417 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1418 u8 cnt; 1419 int sta_idx = -1; 1420 int free_index = -1; 1421 1422 /* Check if max stations reached */ 1423 if (common->num_stations >= common->max_stations) { 1424 rsi_dbg(ERR_ZONE, "Reject: Max Stations exists\n"); 1425 status = -EOPNOTSUPP; 1426 goto unlock; 1427 } 1428 for (cnt = 0; cnt < common->max_stations; cnt++) { 1429 rsta = &common->stations[cnt]; 1430 1431 if (!rsta->sta) { 1432 if (free_index < 0) 1433 free_index = cnt; 1434 continue; 1435 } 1436 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) { 1437 rsi_dbg(INFO_ZONE, "Station exists\n"); 1438 sta_idx = cnt; 1439 sta_exist = true; 1440 break; 1441 } 1442 } 1443 if (!sta_exist) { 1444 if (free_index >= 0) 1445 sta_idx = free_index; 1446 } 1447 if (sta_idx < 0) { 1448 rsi_dbg(ERR_ZONE, 1449 "%s: Some problem reaching here...\n", 1450 __func__); 1451 status = -EINVAL; 1452 goto unlock; 1453 } 1454 rsta = &common->stations[sta_idx]; 1455 rsta->sta = sta; 1456 rsta->sta_id = sta_idx; 1457 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++) 1458 rsta->start_tx_aggr[cnt] = false; 1459 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++) 1460 rsta->seq_start[cnt] = 0; 1461 if (!sta_exist) { 1462 rsi_dbg(INFO_ZONE, "New Station\n"); 1463 1464 /* Send peer notify to device */ 1465 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n"); 1466 rsi_inform_bss_status(common, RSI_OPMODE_AP, 1, 1467 sta->addr, sta->wme, sta->aid, 1468 sta, sta_idx, 0, vif); 1469 1470 if (common->key) { 1471 struct ieee80211_key_conf *key = common->key; 1472 1473 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) || 1474 (key->cipher == WLAN_CIPHER_SUITE_WEP40)) 1475 rsi_hal_load_key(adapter->priv, 1476 key->key, 1477 key->keylen, 1478 RSI_PAIRWISE_KEY, 1479 key->keyidx, 1480 key->cipher, 1481 sta_idx, 1482 vif); 1483 } 1484 1485 common->num_stations++; 1486 } 1487 } 1488 1489 if ((vif->type == NL80211_IFTYPE_STATION) || 1490 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) { 1491 common->bitrate_mask[common->band] = sta->deflink.supp_rates[common->band]; 1492 common->vif_info[0].is_ht = sta->deflink.ht_cap.ht_supported; 1493 if (sta->deflink.ht_cap.ht_supported) { 1494 common->bitrate_mask[NL80211_BAND_2GHZ] = 1495 sta->deflink.supp_rates[NL80211_BAND_2GHZ]; 1496 if ((sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_20) || 1497 (sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_40)) 1498 common->vif_info[0].sgi = true; 1499 ieee80211_start_tx_ba_session(sta, 0, 0); 1500 } 1501 } 1502 1503 unlock: 1504 mutex_unlock(&common->mutex); 1505 1506 return status; 1507 } 1508 1509 /** 1510 * rsi_mac80211_sta_remove() - This function notifies driver about a peer 1511 * getting disconnected. 1512 * @hw: Pointer to the ieee80211_hw structure. 1513 * @vif: Pointer to the ieee80211_vif structure. 1514 * @sta: Pointer to the ieee80211_sta structure. 1515 * 1516 * Return: 0 on success, negative error codes on failure. 1517 */ 1518 static int rsi_mac80211_sta_remove(struct ieee80211_hw *hw, 1519 struct ieee80211_vif *vif, 1520 struct ieee80211_sta *sta) 1521 { 1522 struct rsi_hw *adapter = hw->priv; 1523 struct rsi_common *common = adapter->priv; 1524 struct ieee80211_bss_conf *bss = &vif->bss_conf; 1525 struct rsi_sta *rsta; 1526 1527 rsi_dbg(INFO_ZONE, "Station Remove: %pM\n", sta->addr); 1528 1529 mutex_lock(&common->mutex); 1530 1531 if ((vif->type == NL80211_IFTYPE_AP) || 1532 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1533 u8 sta_idx, cnt; 1534 1535 /* Send peer notify to device */ 1536 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n"); 1537 for (sta_idx = 0; sta_idx < common->max_stations; sta_idx++) { 1538 rsta = &common->stations[sta_idx]; 1539 1540 if (!rsta->sta) 1541 continue; 1542 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) { 1543 rsi_inform_bss_status(common, RSI_OPMODE_AP, 0, 1544 sta->addr, sta->wme, 1545 sta->aid, sta, sta_idx, 1546 0, vif); 1547 rsta->sta = NULL; 1548 rsta->sta_id = -1; 1549 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++) 1550 rsta->start_tx_aggr[cnt] = false; 1551 if (common->num_stations > 0) 1552 common->num_stations--; 1553 break; 1554 } 1555 } 1556 if (sta_idx >= common->max_stations) 1557 rsi_dbg(ERR_ZONE, "%s: No station found\n", __func__); 1558 } 1559 1560 if ((vif->type == NL80211_IFTYPE_STATION) || 1561 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) { 1562 /* Resetting all the fields to default values */ 1563 memcpy((u8 *)bss->bssid, (u8 *)sta->addr, ETH_ALEN); 1564 bss->qos = sta->wme; 1565 common->bitrate_mask[NL80211_BAND_2GHZ] = 0; 1566 common->bitrate_mask[NL80211_BAND_5GHZ] = 0; 1567 common->vif_info[0].is_ht = false; 1568 common->vif_info[0].sgi = false; 1569 common->vif_info[0].seq_start = 0; 1570 common->secinfo.ptk_cipher = 0; 1571 common->secinfo.gtk_cipher = 0; 1572 if (!common->iface_down) 1573 rsi_send_rx_filter_frame(common, 0); 1574 } 1575 mutex_unlock(&common->mutex); 1576 1577 return 0; 1578 } 1579 1580 /** 1581 * rsi_mac80211_set_antenna() - This function is used to configure 1582 * tx and rx antennas. 1583 * @hw: Pointer to the ieee80211_hw structure. 1584 * @tx_ant: Bitmap for tx antenna 1585 * @rx_ant: Bitmap for rx antenna 1586 * 1587 * Return: 0 on success, Negative error code on failure. 1588 */ 1589 static int rsi_mac80211_set_antenna(struct ieee80211_hw *hw, 1590 u32 tx_ant, u32 rx_ant) 1591 { 1592 struct rsi_hw *adapter = hw->priv; 1593 struct rsi_common *common = adapter->priv; 1594 u8 antenna = 0; 1595 1596 if (tx_ant > 1 || rx_ant > 1) { 1597 rsi_dbg(ERR_ZONE, 1598 "Invalid antenna selection (tx: %d, rx:%d)\n", 1599 tx_ant, rx_ant); 1600 rsi_dbg(ERR_ZONE, 1601 "Use 0 for int_ant, 1 for ext_ant\n"); 1602 return -EINVAL; 1603 } 1604 1605 rsi_dbg(INFO_ZONE, "%s: Antenna map Tx %x Rx %d\n", 1606 __func__, tx_ant, rx_ant); 1607 1608 mutex_lock(&common->mutex); 1609 1610 antenna = tx_ant ? ANTENNA_SEL_UFL : ANTENNA_SEL_INT; 1611 if (common->ant_in_use != antenna) 1612 if (rsi_set_antenna(common, antenna)) 1613 goto fail_set_antenna; 1614 1615 rsi_dbg(INFO_ZONE, "(%s) Antenna path configured successfully\n", 1616 tx_ant ? "UFL" : "INT"); 1617 1618 common->ant_in_use = antenna; 1619 1620 mutex_unlock(&common->mutex); 1621 1622 return 0; 1623 1624 fail_set_antenna: 1625 rsi_dbg(ERR_ZONE, "%s: Failed.\n", __func__); 1626 mutex_unlock(&common->mutex); 1627 return -EINVAL; 1628 } 1629 1630 /** 1631 * rsi_mac80211_get_antenna() - This function is used to configure 1632 * tx and rx antennas. 1633 * 1634 * @hw: Pointer to the ieee80211_hw structure. 1635 * @tx_ant: Bitmap for tx antenna 1636 * @rx_ant: Bitmap for rx antenna 1637 * 1638 * Return: 0 on success, negative error codes on failure. 1639 */ 1640 static int rsi_mac80211_get_antenna(struct ieee80211_hw *hw, 1641 u32 *tx_ant, u32 *rx_ant) 1642 { 1643 struct rsi_hw *adapter = hw->priv; 1644 struct rsi_common *common = adapter->priv; 1645 1646 mutex_lock(&common->mutex); 1647 1648 *tx_ant = (common->ant_in_use == ANTENNA_SEL_UFL) ? 1 : 0; 1649 *rx_ant = 0; 1650 1651 mutex_unlock(&common->mutex); 1652 1653 return 0; 1654 } 1655 1656 static int rsi_map_region_code(enum nl80211_dfs_regions region_code) 1657 { 1658 switch (region_code) { 1659 case NL80211_DFS_FCC: 1660 return RSI_REGION_FCC; 1661 case NL80211_DFS_ETSI: 1662 return RSI_REGION_ETSI; 1663 case NL80211_DFS_JP: 1664 return RSI_REGION_TELEC; 1665 case NL80211_DFS_UNSET: 1666 return RSI_REGION_WORLD; 1667 } 1668 return RSI_REGION_WORLD; 1669 } 1670 1671 static void rsi_reg_notify(struct wiphy *wiphy, 1672 struct regulatory_request *request) 1673 { 1674 struct ieee80211_supported_band *sband; 1675 struct ieee80211_channel *ch; 1676 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 1677 struct rsi_hw * adapter = hw->priv; 1678 struct rsi_common *common = adapter->priv; 1679 int i; 1680 1681 mutex_lock(&common->mutex); 1682 1683 rsi_dbg(INFO_ZONE, "country = %s dfs_region = %d\n", 1684 request->alpha2, request->dfs_region); 1685 1686 if (common->num_supp_bands > 1) { 1687 sband = wiphy->bands[NL80211_BAND_5GHZ]; 1688 1689 for (i = 0; i < sband->n_channels; i++) { 1690 ch = &sband->channels[i]; 1691 if (ch->flags & IEEE80211_CHAN_DISABLED) 1692 continue; 1693 1694 if (ch->flags & IEEE80211_CHAN_RADAR) 1695 ch->flags |= IEEE80211_CHAN_NO_IR; 1696 } 1697 } 1698 adapter->dfs_region = rsi_map_region_code(request->dfs_region); 1699 rsi_dbg(INFO_ZONE, "RSI region code = %d\n", adapter->dfs_region); 1700 1701 adapter->country[0] = request->alpha2[0]; 1702 adapter->country[1] = request->alpha2[1]; 1703 1704 mutex_unlock(&common->mutex); 1705 } 1706 1707 static void rsi_mac80211_rfkill_poll(struct ieee80211_hw *hw) 1708 { 1709 struct rsi_hw *adapter = hw->priv; 1710 struct rsi_common *common = adapter->priv; 1711 1712 mutex_lock(&common->mutex); 1713 if (common->fsm_state != FSM_MAC_INIT_DONE) 1714 wiphy_rfkill_set_hw_state(hw->wiphy, true); 1715 else 1716 wiphy_rfkill_set_hw_state(hw->wiphy, false); 1717 mutex_unlock(&common->mutex); 1718 } 1719 1720 static void rsi_resume_conn_channel(struct rsi_common *common) 1721 { 1722 struct rsi_hw *adapter = common->priv; 1723 struct ieee80211_vif *vif; 1724 int cnt; 1725 1726 for (cnt = 0; cnt < RSI_MAX_VIFS; cnt++) { 1727 vif = adapter->vifs[cnt]; 1728 if (!vif) 1729 continue; 1730 1731 if ((vif->type == NL80211_IFTYPE_AP) || 1732 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1733 rsi_switch_channel(adapter, vif); 1734 break; 1735 } 1736 if (((vif->type == NL80211_IFTYPE_STATION) || 1737 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) && 1738 vif->cfg.assoc) { 1739 rsi_switch_channel(adapter, vif); 1740 break; 1741 } 1742 } 1743 } 1744 1745 void rsi_roc_timeout(struct timer_list *t) 1746 { 1747 struct rsi_common *common = from_timer(common, t, roc_timer); 1748 1749 rsi_dbg(INFO_ZONE, "Remain on channel expired\n"); 1750 1751 mutex_lock(&common->mutex); 1752 ieee80211_remain_on_channel_expired(common->priv->hw); 1753 1754 if (timer_pending(&common->roc_timer)) 1755 del_timer(&common->roc_timer); 1756 1757 rsi_resume_conn_channel(common); 1758 mutex_unlock(&common->mutex); 1759 } 1760 1761 static int rsi_mac80211_roc(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1762 struct ieee80211_channel *chan, int duration, 1763 enum ieee80211_roc_type type) 1764 { 1765 struct rsi_hw *adapter = (struct rsi_hw *)hw->priv; 1766 struct rsi_common *common = (struct rsi_common *)adapter->priv; 1767 int status = 0; 1768 1769 rsi_dbg(INFO_ZONE, "***** Remain on channel *****\n"); 1770 1771 mutex_lock(&common->mutex); 1772 rsi_dbg(INFO_ZONE, "%s: channel: %d duration: %dms\n", 1773 __func__, chan->hw_value, duration); 1774 1775 if (timer_pending(&common->roc_timer)) { 1776 rsi_dbg(INFO_ZONE, "Stop on-going ROC\n"); 1777 del_timer(&common->roc_timer); 1778 } 1779 common->roc_timer.expires = msecs_to_jiffies(duration) + jiffies; 1780 add_timer(&common->roc_timer); 1781 1782 /* Configure band */ 1783 if (rsi_band_check(common, chan)) { 1784 rsi_dbg(ERR_ZONE, "Failed to set band\n"); 1785 status = -EINVAL; 1786 goto out; 1787 } 1788 1789 /* Configure channel */ 1790 if (rsi_set_channel(common, chan)) { 1791 rsi_dbg(ERR_ZONE, "Failed to set the channel\n"); 1792 status = -EINVAL; 1793 goto out; 1794 } 1795 1796 common->roc_vif = vif; 1797 ieee80211_ready_on_channel(hw); 1798 rsi_dbg(INFO_ZONE, "%s: Ready on channel :%d\n", 1799 __func__, chan->hw_value); 1800 1801 out: 1802 mutex_unlock(&common->mutex); 1803 1804 return status; 1805 } 1806 1807 static int rsi_mac80211_cancel_roc(struct ieee80211_hw *hw, 1808 struct ieee80211_vif *vif) 1809 { 1810 struct rsi_hw *adapter = hw->priv; 1811 struct rsi_common *common = adapter->priv; 1812 1813 rsi_dbg(INFO_ZONE, "Cancel remain on channel\n"); 1814 1815 mutex_lock(&common->mutex); 1816 if (!timer_pending(&common->roc_timer)) { 1817 mutex_unlock(&common->mutex); 1818 return 0; 1819 } 1820 1821 del_timer(&common->roc_timer); 1822 1823 rsi_resume_conn_channel(common); 1824 mutex_unlock(&common->mutex); 1825 1826 return 0; 1827 } 1828 1829 #ifdef CONFIG_PM 1830 static const struct wiphy_wowlan_support rsi_wowlan_support = { 1831 .flags = WIPHY_WOWLAN_ANY | 1832 WIPHY_WOWLAN_MAGIC_PKT | 1833 WIPHY_WOWLAN_DISCONNECT | 1834 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 1835 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 1836 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 1837 WIPHY_WOWLAN_4WAY_HANDSHAKE, 1838 }; 1839 1840 static u16 rsi_wow_map_triggers(struct rsi_common *common, 1841 struct cfg80211_wowlan *wowlan) 1842 { 1843 u16 wow_triggers = 0; 1844 1845 rsi_dbg(INFO_ZONE, "Mapping wowlan triggers\n"); 1846 1847 if (wowlan->any) 1848 wow_triggers |= RSI_WOW_ANY; 1849 if (wowlan->magic_pkt) 1850 wow_triggers |= RSI_WOW_MAGIC_PKT; 1851 if (wowlan->disconnect) 1852 wow_triggers |= RSI_WOW_DISCONNECT; 1853 if (wowlan->gtk_rekey_failure || wowlan->eap_identity_req || 1854 wowlan->four_way_handshake) 1855 wow_triggers |= RSI_WOW_GTK_REKEY; 1856 1857 return wow_triggers; 1858 } 1859 1860 int rsi_config_wowlan(struct rsi_hw *adapter, struct cfg80211_wowlan *wowlan) 1861 { 1862 struct rsi_common *common = adapter->priv; 1863 struct ieee80211_vif *vif = adapter->vifs[0]; 1864 u16 triggers = 0; 1865 u16 rx_filter_word = 0; 1866 1867 rsi_dbg(INFO_ZONE, "Config WoWLAN to device\n"); 1868 1869 if (!vif) 1870 return -EINVAL; 1871 1872 if (WARN_ON(!wowlan)) { 1873 rsi_dbg(ERR_ZONE, "WoW triggers not enabled\n"); 1874 return -EINVAL; 1875 } 1876 1877 common->wow_flags |= RSI_WOW_ENABLED; 1878 triggers = rsi_wow_map_triggers(common, wowlan); 1879 if (!triggers) { 1880 rsi_dbg(ERR_ZONE, "%s:No valid WoW triggers\n", __func__); 1881 return -EINVAL; 1882 } 1883 if (!vif->cfg.assoc) { 1884 rsi_dbg(ERR_ZONE, 1885 "Cannot configure WoWLAN (Station not connected)\n"); 1886 common->wow_flags |= RSI_WOW_NO_CONNECTION; 1887 return 0; 1888 } 1889 rsi_dbg(INFO_ZONE, "TRIGGERS %x\n", triggers); 1890 1891 if (common->coex_mode > 1) 1892 rsi_disable_ps(adapter, adapter->vifs[0]); 1893 1894 rsi_send_wowlan_request(common, triggers, 1); 1895 1896 /** 1897 * Increase the beacon_miss threshold & keep-alive timers in 1898 * vap_update frame 1899 */ 1900 rsi_send_vap_dynamic_update(common); 1901 1902 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | DISALLOW_BEACONS); 1903 rsi_send_rx_filter_frame(common, rx_filter_word); 1904 1905 return 0; 1906 } 1907 EXPORT_SYMBOL(rsi_config_wowlan); 1908 1909 static int rsi_mac80211_suspend(struct ieee80211_hw *hw, 1910 struct cfg80211_wowlan *wowlan) 1911 { 1912 struct rsi_hw *adapter = hw->priv; 1913 struct rsi_common *common = adapter->priv; 1914 1915 rsi_dbg(INFO_ZONE, "%s: mac80211 suspend\n", __func__); 1916 mutex_lock(&common->mutex); 1917 if (rsi_config_wowlan(adapter, wowlan)) { 1918 rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n"); 1919 mutex_unlock(&common->mutex); 1920 return 1; 1921 } 1922 mutex_unlock(&common->mutex); 1923 1924 return 0; 1925 } 1926 1927 static int rsi_mac80211_resume(struct ieee80211_hw *hw) 1928 { 1929 u16 rx_filter_word = 0; 1930 struct rsi_hw *adapter = hw->priv; 1931 struct rsi_common *common = adapter->priv; 1932 1933 common->wow_flags = 0; 1934 1935 rsi_dbg(INFO_ZONE, "%s: mac80211 resume\n", __func__); 1936 1937 if (common->hibernate_resume) { 1938 common->mac_ops_resumed = true; 1939 /* Device need a complete restart of all MAC operations. 1940 * returning 1 will serve this purpose. 1941 */ 1942 return 1; 1943 } 1944 1945 mutex_lock(&common->mutex); 1946 rsi_send_wowlan_request(common, 0, 0); 1947 1948 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | ALLOW_CTRL_ASSOC_PEER | 1949 ALLOW_MGMT_ASSOC_PEER); 1950 rsi_send_rx_filter_frame(common, rx_filter_word); 1951 mutex_unlock(&common->mutex); 1952 1953 return 0; 1954 } 1955 1956 #endif 1957 1958 static const struct ieee80211_ops mac80211_ops = { 1959 .tx = rsi_mac80211_tx, 1960 .start = rsi_mac80211_start, 1961 .stop = rsi_mac80211_stop, 1962 .add_interface = rsi_mac80211_add_interface, 1963 .remove_interface = rsi_mac80211_remove_interface, 1964 .config = rsi_mac80211_config, 1965 .bss_info_changed = rsi_mac80211_bss_info_changed, 1966 .conf_tx = rsi_mac80211_conf_tx, 1967 .configure_filter = rsi_mac80211_conf_filter, 1968 .set_key = rsi_mac80211_set_key, 1969 .set_rts_threshold = rsi_mac80211_set_rts_threshold, 1970 .set_bitrate_mask = rsi_mac80211_set_rate_mask, 1971 .ampdu_action = rsi_mac80211_ampdu_action, 1972 .sta_add = rsi_mac80211_sta_add, 1973 .sta_remove = rsi_mac80211_sta_remove, 1974 .set_antenna = rsi_mac80211_set_antenna, 1975 .get_antenna = rsi_mac80211_get_antenna, 1976 .rfkill_poll = rsi_mac80211_rfkill_poll, 1977 .remain_on_channel = rsi_mac80211_roc, 1978 .cancel_remain_on_channel = rsi_mac80211_cancel_roc, 1979 #ifdef CONFIG_PM 1980 .suspend = rsi_mac80211_suspend, 1981 .resume = rsi_mac80211_resume, 1982 #endif 1983 .hw_scan = rsi_mac80211_hw_scan_start, 1984 .cancel_hw_scan = rsi_mac80211_cancel_hw_scan, 1985 }; 1986 1987 /** 1988 * rsi_mac80211_attach() - This function is used to initialize Mac80211 stack. 1989 * @common: Pointer to the driver private structure. 1990 * 1991 * Return: 0 on success, negative error codes on failure. 1992 */ 1993 int rsi_mac80211_attach(struct rsi_common *common) 1994 { 1995 int status = 0; 1996 struct ieee80211_hw *hw = NULL; 1997 struct wiphy *wiphy = NULL; 1998 struct rsi_hw *adapter = common->priv; 1999 u8 addr_mask[ETH_ALEN] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x3}; 2000 2001 rsi_dbg(INIT_ZONE, "%s: Performing mac80211 attach\n", __func__); 2002 2003 hw = ieee80211_alloc_hw(sizeof(struct rsi_hw), &mac80211_ops); 2004 if (!hw) { 2005 rsi_dbg(ERR_ZONE, "%s: ieee80211 hw alloc failed\n", __func__); 2006 return -ENOMEM; 2007 } 2008 2009 wiphy = hw->wiphy; 2010 2011 SET_IEEE80211_DEV(hw, adapter->device); 2012 2013 hw->priv = adapter; 2014 adapter->hw = hw; 2015 2016 ieee80211_hw_set(hw, SIGNAL_DBM); 2017 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 2018 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 2019 ieee80211_hw_set(hw, SUPPORTS_PS); 2020 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 2021 2022 hw->queues = MAX_HW_QUEUES; 2023 hw->extra_tx_headroom = RSI_NEEDED_HEADROOM; 2024 2025 hw->max_rates = 1; 2026 hw->max_rate_tries = MAX_RETRIES; 2027 hw->uapsd_queues = RSI_IEEE80211_UAPSD_QUEUES; 2028 hw->uapsd_max_sp_len = IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL; 2029 2030 hw->max_tx_aggregation_subframes = RSI_MAX_TX_AGGR_FRMS; 2031 hw->max_rx_aggregation_subframes = RSI_MAX_RX_AGGR_FRMS; 2032 hw->rate_control_algorithm = "AARF"; 2033 2034 SET_IEEE80211_PERM_ADDR(hw, common->mac_addr); 2035 ether_addr_copy(hw->wiphy->addr_mask, addr_mask); 2036 2037 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 2038 BIT(NL80211_IFTYPE_AP) | 2039 BIT(NL80211_IFTYPE_P2P_DEVICE) | 2040 BIT(NL80211_IFTYPE_P2P_CLIENT) | 2041 BIT(NL80211_IFTYPE_P2P_GO); 2042 2043 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; 2044 wiphy->retry_short = RETRY_SHORT; 2045 wiphy->retry_long = RETRY_LONG; 2046 wiphy->frag_threshold = IEEE80211_MAX_FRAG_THRESHOLD; 2047 wiphy->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 2048 wiphy->flags = 0; 2049 2050 wiphy->available_antennas_rx = 1; 2051 wiphy->available_antennas_tx = 1; 2052 2053 status = rsi_register_rates_channels(adapter, NL80211_BAND_2GHZ); 2054 if (status) 2055 return status; 2056 wiphy->bands[NL80211_BAND_2GHZ] = 2057 &adapter->sbands[NL80211_BAND_2GHZ]; 2058 if (common->num_supp_bands > 1) { 2059 status = rsi_register_rates_channels(adapter, 2060 NL80211_BAND_5GHZ); 2061 if (status) 2062 return status; 2063 wiphy->bands[NL80211_BAND_5GHZ] = 2064 &adapter->sbands[NL80211_BAND_5GHZ]; 2065 } 2066 2067 /* AP Parameters */ 2068 wiphy->max_ap_assoc_sta = rsi_max_ap_stas[common->oper_mode - 1]; 2069 common->max_stations = wiphy->max_ap_assoc_sta; 2070 rsi_dbg(ERR_ZONE, "Max Stations Allowed = %d\n", common->max_stations); 2071 hw->sta_data_size = sizeof(struct rsi_sta); 2072 2073 wiphy->max_scan_ssids = RSI_MAX_SCAN_SSIDS; 2074 wiphy->max_scan_ie_len = RSI_MAX_SCAN_IE_LEN; 2075 wiphy->flags = WIPHY_FLAG_REPORTS_OBSS; 2076 wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 2077 wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER; 2078 wiphy->reg_notifier = rsi_reg_notify; 2079 2080 #ifdef CONFIG_PM 2081 wiphy->wowlan = &rsi_wowlan_support; 2082 #endif 2083 2084 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 2085 2086 /* Wi-Fi direct parameters */ 2087 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; 2088 wiphy->flags |= WIPHY_FLAG_OFFCHAN_TX; 2089 wiphy->max_remain_on_channel_duration = 10000; 2090 hw->max_listen_interval = 10; 2091 wiphy->iface_combinations = rsi_iface_combinations; 2092 wiphy->n_iface_combinations = ARRAY_SIZE(rsi_iface_combinations); 2093 2094 if (common->coex_mode > 1) 2095 wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 2096 2097 status = ieee80211_register_hw(hw); 2098 if (status) 2099 return status; 2100 2101 return rsi_init_dbgfs(adapter); 2102 } 2103