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