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