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; 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 } 632 if (set_ps) { 633 spin_lock_irqsave(&adapter->ps_lock, flags); 634 if (conf->flags & IEEE80211_CONF_PS) 635 rsi_enable_ps(adapter, vif); 636 else 637 rsi_disable_ps(adapter, vif); 638 spin_unlock_irqrestore(&adapter->ps_lock, flags); 639 } 640 } 641 642 /* RTS threshold */ 643 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 644 rsi_dbg(INFO_ZONE, "RTS threshold\n"); 645 if ((common->rts_threshold) <= IEEE80211_MAX_RTS_THRESHOLD) { 646 rsi_dbg(INFO_ZONE, 647 "%s: Sending vap updates....\n", __func__); 648 status = rsi_send_vap_dynamic_update(common); 649 } 650 } 651 mutex_unlock(&common->mutex); 652 653 return status; 654 } 655 656 /** 657 * rsi_get_connected_channel() - This function is used to get the current 658 * connected channel number. 659 * @adapter: Pointer to the adapter structure. 660 * 661 * Return: Current connected AP's channel number is returned. 662 */ 663 u16 rsi_get_connected_channel(struct ieee80211_vif *vif) 664 { 665 struct ieee80211_bss_conf *bss; 666 struct ieee80211_channel *channel; 667 668 if (!vif) 669 return 0; 670 671 bss = &vif->bss_conf; 672 channel = bss->chandef.chan; 673 674 if (!channel) 675 return 0; 676 677 return channel->hw_value; 678 } 679 680 static void rsi_switch_channel(struct rsi_hw *adapter, 681 struct ieee80211_vif *vif) 682 { 683 struct rsi_common *common = adapter->priv; 684 struct ieee80211_channel *channel; 685 686 if (common->iface_down) 687 return; 688 if (!vif) 689 return; 690 691 channel = vif->bss_conf.chandef.chan; 692 693 if (!channel) 694 return; 695 696 rsi_band_check(common, channel); 697 rsi_set_channel(common, channel); 698 rsi_dbg(INFO_ZONE, "Switched to channel - %d\n", channel->hw_value); 699 } 700 701 /** 702 * rsi_mac80211_bss_info_changed() - This function is a handler for config 703 * requests related to BSS parameters that 704 * may vary during BSS's lifespan. 705 * @hw: Pointer to the ieee80211_hw structure. 706 * @vif: Pointer to the ieee80211_vif structure. 707 * @bss_conf: Pointer to the ieee80211_bss_conf structure. 708 * @changed: Changed flags set. 709 * 710 * Return: None. 711 */ 712 static void rsi_mac80211_bss_info_changed(struct ieee80211_hw *hw, 713 struct ieee80211_vif *vif, 714 struct ieee80211_bss_conf *bss_conf, 715 u32 changed) 716 { 717 struct rsi_hw *adapter = hw->priv; 718 struct rsi_common *common = adapter->priv; 719 struct ieee80211_bss_conf *bss = &vif->bss_conf; 720 struct ieee80211_conf *conf = &hw->conf; 721 u16 rx_filter_word = 0; 722 723 mutex_lock(&common->mutex); 724 if (changed & BSS_CHANGED_ASSOC) { 725 rsi_dbg(INFO_ZONE, "%s: Changed Association status: %d\n", 726 __func__, bss_conf->assoc); 727 if (bss_conf->assoc) { 728 /* Send the RX filter frame */ 729 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | 730 ALLOW_CTRL_ASSOC_PEER | 731 ALLOW_MGMT_ASSOC_PEER); 732 rsi_send_rx_filter_frame(common, rx_filter_word); 733 } 734 rsi_inform_bss_status(common, 735 RSI_OPMODE_STA, 736 bss_conf->assoc, 737 bss_conf->bssid, 738 bss_conf->qos, 739 bss_conf->aid, 740 NULL, 0, vif); 741 adapter->ps_info.dtim_interval_duration = bss->dtim_period; 742 adapter->ps_info.listen_interval = conf->listen_interval; 743 744 /* If U-APSD is updated, send ps parameters to firmware */ 745 if (bss->assoc) { 746 if (common->uapsd_bitmap) { 747 rsi_dbg(INFO_ZONE, "Configuring UAPSD\n"); 748 rsi_conf_uapsd(adapter, vif); 749 } 750 } else { 751 common->uapsd_bitmap = 0; 752 } 753 } 754 755 if (changed & BSS_CHANGED_CQM) { 756 common->cqm_info.last_cqm_event_rssi = 0; 757 common->cqm_info.rssi_thold = bss_conf->cqm_rssi_thold; 758 common->cqm_info.rssi_hyst = bss_conf->cqm_rssi_hyst; 759 rsi_dbg(INFO_ZONE, "RSSI throld & hysteresis are: %d %d\n", 760 common->cqm_info.rssi_thold, 761 common->cqm_info.rssi_hyst); 762 } 763 764 if ((changed & BSS_CHANGED_BEACON_ENABLED) && 765 ((vif->type == NL80211_IFTYPE_AP) || 766 (vif->type == NL80211_IFTYPE_P2P_GO))) { 767 if (bss->enable_beacon) { 768 rsi_dbg(INFO_ZONE, "===> BEACON ENABLED <===\n"); 769 common->beacon_enabled = 1; 770 } else { 771 rsi_dbg(INFO_ZONE, "===> BEACON DISABLED <===\n"); 772 common->beacon_enabled = 0; 773 } 774 } 775 776 mutex_unlock(&common->mutex); 777 } 778 779 /** 780 * rsi_mac80211_conf_filter() - This function configure the device's RX filter. 781 * @hw: Pointer to the ieee80211_hw structure. 782 * @changed: Changed flags set. 783 * @total_flags: Total initial flags set. 784 * @multicast: Multicast. 785 * 786 * Return: None. 787 */ 788 static void rsi_mac80211_conf_filter(struct ieee80211_hw *hw, 789 u32 changed_flags, 790 u32 *total_flags, 791 u64 multicast) 792 { 793 /* Not doing much here as of now */ 794 *total_flags &= RSI_SUPP_FILTERS; 795 } 796 797 /** 798 * rsi_mac80211_conf_tx() - This function configures TX queue parameters 799 * (EDCF (aifs, cw_min, cw_max), bursting) 800 * for a hardware TX queue. 801 * @hw: Pointer to the ieee80211_hw structure 802 * @vif: Pointer to the ieee80211_vif structure. 803 * @queue: Queue number. 804 * @params: Pointer to ieee80211_tx_queue_params structure. 805 * 806 * Return: 0 on success, negative error code on failure. 807 */ 808 static int rsi_mac80211_conf_tx(struct ieee80211_hw *hw, 809 struct ieee80211_vif *vif, u16 queue, 810 const struct ieee80211_tx_queue_params *params) 811 { 812 struct rsi_hw *adapter = hw->priv; 813 struct rsi_common *common = adapter->priv; 814 u8 idx = 0; 815 816 if (queue >= IEEE80211_NUM_ACS) 817 return 0; 818 819 rsi_dbg(INFO_ZONE, 820 "%s: Conf queue %d, aifs: %d, cwmin: %d cwmax: %d, txop: %d\n", 821 __func__, queue, params->aifs, 822 params->cw_min, params->cw_max, params->txop); 823 824 mutex_lock(&common->mutex); 825 /* Map into the way the f/w expects */ 826 switch (queue) { 827 case IEEE80211_AC_VO: 828 idx = VO_Q; 829 break; 830 case IEEE80211_AC_VI: 831 idx = VI_Q; 832 break; 833 case IEEE80211_AC_BE: 834 idx = BE_Q; 835 break; 836 case IEEE80211_AC_BK: 837 idx = BK_Q; 838 break; 839 default: 840 idx = BE_Q; 841 break; 842 } 843 844 memcpy(&common->edca_params[idx], 845 params, 846 sizeof(struct ieee80211_tx_queue_params)); 847 848 if (params->uapsd) 849 common->uapsd_bitmap |= idx; 850 else 851 common->uapsd_bitmap &= (~idx); 852 853 mutex_unlock(&common->mutex); 854 855 return 0; 856 } 857 858 /** 859 * rsi_hal_key_config() - This function loads the keys into the firmware. 860 * @hw: Pointer to the ieee80211_hw structure. 861 * @vif: Pointer to the ieee80211_vif structure. 862 * @key: Pointer to the ieee80211_key_conf structure. 863 * 864 * Return: status: 0 on success, negative error codes on failure. 865 */ 866 static int rsi_hal_key_config(struct ieee80211_hw *hw, 867 struct ieee80211_vif *vif, 868 struct ieee80211_key_conf *key, 869 struct ieee80211_sta *sta) 870 { 871 struct rsi_hw *adapter = hw->priv; 872 struct rsi_sta *rsta = NULL; 873 int status; 874 u8 key_type; 875 s16 sta_id = 0; 876 877 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 878 key_type = RSI_PAIRWISE_KEY; 879 else 880 key_type = RSI_GROUP_KEY; 881 882 rsi_dbg(ERR_ZONE, "%s: Cipher 0x%x key_type: %d key_len: %d\n", 883 __func__, key->cipher, key_type, key->keylen); 884 885 if ((vif->type == NL80211_IFTYPE_AP) || 886 (vif->type == NL80211_IFTYPE_P2P_GO)) { 887 if (sta) { 888 rsta = rsi_find_sta(adapter->priv, sta->addr); 889 if (rsta) 890 sta_id = rsta->sta_id; 891 } 892 adapter->priv->key = key; 893 } else { 894 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) || 895 (key->cipher == WLAN_CIPHER_SUITE_WEP40)) { 896 status = rsi_hal_load_key(adapter->priv, 897 key->key, 898 key->keylen, 899 RSI_PAIRWISE_KEY, 900 key->keyidx, 901 key->cipher, 902 sta_id, 903 vif); 904 if (status) 905 return status; 906 } 907 } 908 909 return rsi_hal_load_key(adapter->priv, 910 key->key, 911 key->keylen, 912 key_type, 913 key->keyidx, 914 key->cipher, 915 sta_id, 916 vif); 917 } 918 919 /** 920 * rsi_mac80211_set_key() - This function sets type of key to be loaded. 921 * @hw: Pointer to the ieee80211_hw structure. 922 * @cmd: enum set_key_cmd. 923 * @vif: Pointer to the ieee80211_vif structure. 924 * @sta: Pointer to the ieee80211_sta structure. 925 * @key: Pointer to the ieee80211_key_conf structure. 926 * 927 * Return: status: 0 on success, negative error code on failure. 928 */ 929 static int rsi_mac80211_set_key(struct ieee80211_hw *hw, 930 enum set_key_cmd cmd, 931 struct ieee80211_vif *vif, 932 struct ieee80211_sta *sta, 933 struct ieee80211_key_conf *key) 934 { 935 struct rsi_hw *adapter = hw->priv; 936 struct rsi_common *common = adapter->priv; 937 struct security_info *secinfo = &common->secinfo; 938 int status; 939 940 mutex_lock(&common->mutex); 941 switch (cmd) { 942 case SET_KEY: 943 secinfo->security_enable = true; 944 status = rsi_hal_key_config(hw, vif, key, sta); 945 if (status) { 946 mutex_unlock(&common->mutex); 947 return status; 948 } 949 950 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 951 secinfo->ptk_cipher = key->cipher; 952 else 953 secinfo->gtk_cipher = key->cipher; 954 955 key->hw_key_idx = key->keyidx; 956 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 957 958 rsi_dbg(ERR_ZONE, "%s: RSI set_key\n", __func__); 959 break; 960 961 case DISABLE_KEY: 962 if (vif->type == NL80211_IFTYPE_STATION) 963 secinfo->security_enable = false; 964 rsi_dbg(ERR_ZONE, "%s: RSI del key\n", __func__); 965 memset(key, 0, sizeof(struct ieee80211_key_conf)); 966 status = rsi_hal_key_config(hw, vif, key, sta); 967 break; 968 969 default: 970 status = -EOPNOTSUPP; 971 break; 972 } 973 974 mutex_unlock(&common->mutex); 975 return status; 976 } 977 978 /** 979 * rsi_mac80211_ampdu_action() - This function selects the AMPDU action for 980 * the corresponding mlme_action flag and 981 * informs the f/w regarding this. 982 * @hw: Pointer to the ieee80211_hw structure. 983 * @vif: Pointer to the ieee80211_vif structure. 984 * @params: Pointer to A-MPDU action parameters 985 * 986 * Return: status: 0 on success, negative error code on failure. 987 */ 988 static int rsi_mac80211_ampdu_action(struct ieee80211_hw *hw, 989 struct ieee80211_vif *vif, 990 struct ieee80211_ampdu_params *params) 991 { 992 int status = -EOPNOTSUPP; 993 struct rsi_hw *adapter = hw->priv; 994 struct rsi_common *common = adapter->priv; 995 struct rsi_sta *rsta = NULL; 996 u16 seq_no = 0, seq_start = 0; 997 u8 ii = 0; 998 struct ieee80211_sta *sta = params->sta; 999 u8 sta_id = 0; 1000 enum ieee80211_ampdu_mlme_action action = params->action; 1001 u16 tid = params->tid; 1002 u16 *ssn = ¶ms->ssn; 1003 u8 buf_size = params->buf_size; 1004 1005 for (ii = 0; ii < RSI_MAX_VIFS; ii++) { 1006 if (vif == adapter->vifs[ii]) 1007 break; 1008 } 1009 1010 mutex_lock(&common->mutex); 1011 1012 if (ssn != NULL) 1013 seq_no = *ssn; 1014 1015 if ((vif->type == NL80211_IFTYPE_AP) || 1016 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1017 rsta = rsi_find_sta(common, sta->addr); 1018 if (!rsta) { 1019 rsi_dbg(ERR_ZONE, "No station mapped\n"); 1020 status = 0; 1021 goto unlock; 1022 } 1023 sta_id = rsta->sta_id; 1024 } 1025 1026 rsi_dbg(INFO_ZONE, 1027 "%s: AMPDU action tid=%d ssn=0x%x, buf_size=%d sta_id=%d\n", 1028 __func__, tid, seq_no, buf_size, sta_id); 1029 1030 switch (action) { 1031 case IEEE80211_AMPDU_RX_START: 1032 status = rsi_send_aggregation_params_frame(common, 1033 tid, 1034 seq_no, 1035 buf_size, 1036 STA_RX_ADDBA_DONE, 1037 sta_id); 1038 break; 1039 1040 case IEEE80211_AMPDU_RX_STOP: 1041 status = rsi_send_aggregation_params_frame(common, 1042 tid, 1043 0, 1044 buf_size, 1045 STA_RX_DELBA, 1046 sta_id); 1047 break; 1048 1049 case IEEE80211_AMPDU_TX_START: 1050 if ((vif->type == NL80211_IFTYPE_STATION) || 1051 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) 1052 common->vif_info[ii].seq_start = seq_no; 1053 else if ((vif->type == NL80211_IFTYPE_AP) || 1054 (vif->type == NL80211_IFTYPE_P2P_GO)) 1055 rsta->seq_start[tid] = seq_no; 1056 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1057 status = 0; 1058 break; 1059 1060 case IEEE80211_AMPDU_TX_STOP_CONT: 1061 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1062 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1063 status = rsi_send_aggregation_params_frame(common, 1064 tid, 1065 seq_no, 1066 buf_size, 1067 STA_TX_DELBA, 1068 sta_id); 1069 if (!status) 1070 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1071 break; 1072 1073 case IEEE80211_AMPDU_TX_OPERATIONAL: 1074 if ((vif->type == NL80211_IFTYPE_STATION) || 1075 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) 1076 seq_start = common->vif_info[ii].seq_start; 1077 else if ((vif->type == NL80211_IFTYPE_AP) || 1078 (vif->type == NL80211_IFTYPE_P2P_GO)) 1079 seq_start = rsta->seq_start[tid]; 1080 status = rsi_send_aggregation_params_frame(common, 1081 tid, 1082 seq_start, 1083 buf_size, 1084 STA_TX_ADDBA_DONE, 1085 sta_id); 1086 break; 1087 1088 default: 1089 rsi_dbg(ERR_ZONE, "%s: Uknown AMPDU action\n", __func__); 1090 break; 1091 } 1092 1093 unlock: 1094 mutex_unlock(&common->mutex); 1095 return status; 1096 } 1097 1098 /** 1099 * rsi_mac80211_set_rts_threshold() - This function sets rts threshold value. 1100 * @hw: Pointer to the ieee80211_hw structure. 1101 * @value: Rts threshold value. 1102 * 1103 * Return: 0 on success. 1104 */ 1105 static int rsi_mac80211_set_rts_threshold(struct ieee80211_hw *hw, 1106 u32 value) 1107 { 1108 struct rsi_hw *adapter = hw->priv; 1109 struct rsi_common *common = adapter->priv; 1110 1111 mutex_lock(&common->mutex); 1112 common->rts_threshold = value; 1113 mutex_unlock(&common->mutex); 1114 1115 return 0; 1116 } 1117 1118 /** 1119 * rsi_mac80211_set_rate_mask() - This function sets bitrate_mask to be used. 1120 * @hw: Pointer to the ieee80211_hw structure 1121 * @vif: Pointer to the ieee80211_vif structure. 1122 * @mask: Pointer to the cfg80211_bitrate_mask structure. 1123 * 1124 * Return: 0 on success. 1125 */ 1126 static int rsi_mac80211_set_rate_mask(struct ieee80211_hw *hw, 1127 struct ieee80211_vif *vif, 1128 const struct cfg80211_bitrate_mask *mask) 1129 { 1130 struct rsi_hw *adapter = hw->priv; 1131 struct rsi_common *common = adapter->priv; 1132 enum nl80211_band band = hw->conf.chandef.chan->band; 1133 1134 mutex_lock(&common->mutex); 1135 common->fixedrate_mask[band] = 0; 1136 1137 if (mask->control[band].legacy == 0xfff) { 1138 common->fixedrate_mask[band] = 1139 (mask->control[band].ht_mcs[0] << 12); 1140 } else { 1141 common->fixedrate_mask[band] = 1142 mask->control[band].legacy; 1143 } 1144 mutex_unlock(&common->mutex); 1145 1146 return 0; 1147 } 1148 1149 /** 1150 * rsi_perform_cqm() - This function performs cqm. 1151 * @common: Pointer to the driver private structure. 1152 * @bssid: pointer to the bssid. 1153 * @rssi: RSSI value. 1154 */ 1155 static void rsi_perform_cqm(struct rsi_common *common, 1156 u8 *bssid, 1157 s8 rssi, 1158 struct ieee80211_vif *vif) 1159 { 1160 s8 last_event = common->cqm_info.last_cqm_event_rssi; 1161 int thold = common->cqm_info.rssi_thold; 1162 u32 hyst = common->cqm_info.rssi_hyst; 1163 enum nl80211_cqm_rssi_threshold_event event; 1164 1165 if (rssi < thold && (last_event == 0 || rssi < (last_event - hyst))) 1166 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW; 1167 else if (rssi > thold && 1168 (last_event == 0 || rssi > (last_event + hyst))) 1169 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH; 1170 else 1171 return; 1172 1173 common->cqm_info.last_cqm_event_rssi = rssi; 1174 rsi_dbg(INFO_ZONE, "CQM: Notifying event: %d\n", event); 1175 ieee80211_cqm_rssi_notify(vif, event, rssi, GFP_KERNEL); 1176 1177 return; 1178 } 1179 1180 /** 1181 * rsi_fill_rx_status() - This function fills rx status in 1182 * ieee80211_rx_status structure. 1183 * @hw: Pointer to the ieee80211_hw structure. 1184 * @skb: Pointer to the socket buffer structure. 1185 * @common: Pointer to the driver private structure. 1186 * @rxs: Pointer to the ieee80211_rx_status structure. 1187 * 1188 * Return: None. 1189 */ 1190 static void rsi_fill_rx_status(struct ieee80211_hw *hw, 1191 struct sk_buff *skb, 1192 struct rsi_common *common, 1193 struct ieee80211_rx_status *rxs) 1194 { 1195 struct rsi_hw *adapter = common->priv; 1196 struct ieee80211_vif *vif; 1197 struct ieee80211_bss_conf *bss = NULL; 1198 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 1199 struct skb_info *rx_params = (struct skb_info *)info->driver_data; 1200 struct ieee80211_hdr *hdr; 1201 char rssi = rx_params->rssi; 1202 u8 hdrlen = 0; 1203 u8 channel = rx_params->channel; 1204 s32 freq; 1205 int i; 1206 1207 hdr = ((struct ieee80211_hdr *)(skb->data)); 1208 hdrlen = ieee80211_hdrlen(hdr->frame_control); 1209 1210 memset(info, 0, sizeof(struct ieee80211_tx_info)); 1211 1212 rxs->signal = -(rssi); 1213 1214 rxs->band = common->band; 1215 1216 freq = ieee80211_channel_to_frequency(channel, rxs->band); 1217 1218 if (freq) 1219 rxs->freq = freq; 1220 1221 if (ieee80211_has_protected(hdr->frame_control)) { 1222 if (rsi_is_cipher_wep(common)) { 1223 memmove(skb->data + 4, skb->data, hdrlen); 1224 skb_pull(skb, 4); 1225 } else { 1226 memmove(skb->data + 8, skb->data, hdrlen); 1227 skb_pull(skb, 8); 1228 rxs->flag |= RX_FLAG_MMIC_STRIPPED; 1229 } 1230 rxs->flag |= RX_FLAG_DECRYPTED; 1231 rxs->flag |= RX_FLAG_IV_STRIPPED; 1232 } 1233 1234 for (i = 0; i < RSI_MAX_VIFS; i++) { 1235 vif = adapter->vifs[i]; 1236 if (!vif) 1237 continue; 1238 if (vif->type == NL80211_IFTYPE_STATION) { 1239 bss = &vif->bss_conf; 1240 break; 1241 } 1242 } 1243 if (!bss) 1244 return; 1245 /* CQM only for connected AP beacons, the RSSI is a weighted avg */ 1246 if (bss->assoc && !(memcmp(bss->bssid, hdr->addr2, ETH_ALEN))) { 1247 if (ieee80211_is_beacon(hdr->frame_control)) 1248 rsi_perform_cqm(common, hdr->addr2, rxs->signal, vif); 1249 } 1250 1251 return; 1252 } 1253 1254 /** 1255 * rsi_indicate_pkt_to_os() - This function sends recieved packet to mac80211. 1256 * @common: Pointer to the driver private structure. 1257 * @skb: Pointer to the socket buffer structure. 1258 * 1259 * Return: None. 1260 */ 1261 void rsi_indicate_pkt_to_os(struct rsi_common *common, 1262 struct sk_buff *skb) 1263 { 1264 struct rsi_hw *adapter = common->priv; 1265 struct ieee80211_hw *hw = adapter->hw; 1266 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); 1267 1268 if ((common->iface_down) || (!adapter->sc_nvifs)) { 1269 dev_kfree_skb(skb); 1270 return; 1271 } 1272 1273 /* filling in the ieee80211_rx_status flags */ 1274 rsi_fill_rx_status(hw, skb, common, rx_status); 1275 1276 ieee80211_rx_irqsafe(hw, skb); 1277 } 1278 1279 static void rsi_set_min_rate(struct ieee80211_hw *hw, 1280 struct ieee80211_sta *sta, 1281 struct rsi_common *common) 1282 { 1283 u8 band = hw->conf.chandef.chan->band; 1284 u8 ii; 1285 u32 rate_bitmap; 1286 bool matched = false; 1287 1288 common->bitrate_mask[band] = sta->supp_rates[band]; 1289 1290 rate_bitmap = (common->fixedrate_mask[band] & sta->supp_rates[band]); 1291 1292 if (rate_bitmap & 0xfff) { 1293 /* Find out the min rate */ 1294 for (ii = 0; ii < ARRAY_SIZE(rsi_rates); ii++) { 1295 if (rate_bitmap & BIT(ii)) { 1296 common->min_rate = rsi_rates[ii].hw_value; 1297 matched = true; 1298 break; 1299 } 1300 } 1301 } 1302 1303 common->vif_info[0].is_ht = sta->ht_cap.ht_supported; 1304 1305 if ((common->vif_info[0].is_ht) && (rate_bitmap >> 12)) { 1306 for (ii = 0; ii < ARRAY_SIZE(rsi_mcsrates); ii++) { 1307 if ((rate_bitmap >> 12) & BIT(ii)) { 1308 common->min_rate = rsi_mcsrates[ii]; 1309 matched = true; 1310 break; 1311 } 1312 } 1313 } 1314 1315 if (!matched) 1316 common->min_rate = 0xffff; 1317 } 1318 1319 /** 1320 * rsi_mac80211_sta_add() - This function notifies driver about a peer getting 1321 * connected. 1322 * @hw: pointer to the ieee80211_hw structure. 1323 * @vif: Pointer to the ieee80211_vif structure. 1324 * @sta: Pointer to the ieee80211_sta structure. 1325 * 1326 * Return: 0 on success, negative error codes on failure. 1327 */ 1328 static int rsi_mac80211_sta_add(struct ieee80211_hw *hw, 1329 struct ieee80211_vif *vif, 1330 struct ieee80211_sta *sta) 1331 { 1332 struct rsi_hw *adapter = hw->priv; 1333 struct rsi_common *common = adapter->priv; 1334 bool sta_exist = false; 1335 struct rsi_sta *rsta; 1336 int status = 0; 1337 1338 rsi_dbg(INFO_ZONE, "Station Add: %pM\n", sta->addr); 1339 1340 mutex_lock(&common->mutex); 1341 1342 if ((vif->type == NL80211_IFTYPE_AP) || 1343 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1344 u8 cnt; 1345 int sta_idx = -1; 1346 int free_index = -1; 1347 1348 /* Check if max stations reached */ 1349 if (common->num_stations >= common->max_stations) { 1350 rsi_dbg(ERR_ZONE, "Reject: Max Stations exists\n"); 1351 status = -EOPNOTSUPP; 1352 goto unlock; 1353 } 1354 for (cnt = 0; cnt < common->max_stations; cnt++) { 1355 rsta = &common->stations[cnt]; 1356 1357 if (!rsta->sta) { 1358 if (free_index < 0) 1359 free_index = cnt; 1360 continue; 1361 } 1362 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) { 1363 rsi_dbg(INFO_ZONE, "Station exists\n"); 1364 sta_idx = cnt; 1365 sta_exist = true; 1366 break; 1367 } 1368 } 1369 if (!sta_exist) { 1370 if (free_index >= 0) 1371 sta_idx = free_index; 1372 } 1373 if (sta_idx < 0) { 1374 rsi_dbg(ERR_ZONE, 1375 "%s: Some problem reaching here...\n", 1376 __func__); 1377 status = -EINVAL; 1378 goto unlock; 1379 } 1380 rsta = &common->stations[sta_idx]; 1381 rsta->sta = sta; 1382 rsta->sta_id = sta_idx; 1383 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++) 1384 rsta->start_tx_aggr[cnt] = false; 1385 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++) 1386 rsta->seq_start[cnt] = 0; 1387 if (!sta_exist) { 1388 rsi_dbg(INFO_ZONE, "New Station\n"); 1389 1390 /* Send peer notify to device */ 1391 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n"); 1392 rsi_inform_bss_status(common, RSI_OPMODE_AP, 1, 1393 sta->addr, sta->wme, sta->aid, 1394 sta, sta_idx, vif); 1395 1396 if (common->key) { 1397 struct ieee80211_key_conf *key = common->key; 1398 1399 if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) || 1400 (key->cipher == WLAN_CIPHER_SUITE_WEP40)) 1401 rsi_hal_load_key(adapter->priv, 1402 key->key, 1403 key->keylen, 1404 RSI_PAIRWISE_KEY, 1405 key->keyidx, 1406 key->cipher, 1407 sta_idx, 1408 vif); 1409 } 1410 1411 common->num_stations++; 1412 } 1413 } 1414 1415 if ((vif->type == NL80211_IFTYPE_STATION) || 1416 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) { 1417 rsi_set_min_rate(hw, sta, common); 1418 if (sta->ht_cap.ht_supported) { 1419 common->vif_info[0].is_ht = true; 1420 common->bitrate_mask[NL80211_BAND_2GHZ] = 1421 sta->supp_rates[NL80211_BAND_2GHZ]; 1422 if ((sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) || 1423 (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40)) 1424 common->vif_info[0].sgi = true; 1425 ieee80211_start_tx_ba_session(sta, 0, 0); 1426 } 1427 } 1428 1429 unlock: 1430 mutex_unlock(&common->mutex); 1431 1432 return status; 1433 } 1434 1435 /** 1436 * rsi_mac80211_sta_remove() - This function notifies driver about a peer 1437 * getting disconnected. 1438 * @hw: Pointer to the ieee80211_hw structure. 1439 * @vif: Pointer to the ieee80211_vif structure. 1440 * @sta: Pointer to the ieee80211_sta structure. 1441 * 1442 * Return: 0 on success, negative error codes on failure. 1443 */ 1444 static int rsi_mac80211_sta_remove(struct ieee80211_hw *hw, 1445 struct ieee80211_vif *vif, 1446 struct ieee80211_sta *sta) 1447 { 1448 struct rsi_hw *adapter = hw->priv; 1449 struct rsi_common *common = adapter->priv; 1450 struct ieee80211_bss_conf *bss = &vif->bss_conf; 1451 struct rsi_sta *rsta; 1452 1453 rsi_dbg(INFO_ZONE, "Station Remove: %pM\n", sta->addr); 1454 1455 mutex_lock(&common->mutex); 1456 1457 if ((vif->type == NL80211_IFTYPE_AP) || 1458 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1459 u8 sta_idx, cnt; 1460 1461 /* Send peer notify to device */ 1462 rsi_dbg(INFO_ZONE, "Indicate bss status to device\n"); 1463 for (sta_idx = 0; sta_idx < common->max_stations; sta_idx++) { 1464 rsta = &common->stations[sta_idx]; 1465 1466 if (!rsta->sta) 1467 continue; 1468 if (!memcmp(rsta->sta->addr, sta->addr, ETH_ALEN)) { 1469 rsi_inform_bss_status(common, RSI_OPMODE_AP, 0, 1470 sta->addr, sta->wme, 1471 sta->aid, sta, sta_idx, 1472 vif); 1473 rsta->sta = NULL; 1474 rsta->sta_id = -1; 1475 for (cnt = 0; cnt < IEEE80211_NUM_TIDS; cnt++) 1476 rsta->start_tx_aggr[cnt] = false; 1477 if (common->num_stations > 0) 1478 common->num_stations--; 1479 break; 1480 } 1481 } 1482 if (sta_idx >= common->max_stations) 1483 rsi_dbg(ERR_ZONE, "%s: No station found\n", __func__); 1484 } 1485 1486 if ((vif->type == NL80211_IFTYPE_STATION) || 1487 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) { 1488 /* Resetting all the fields to default values */ 1489 memcpy((u8 *)bss->bssid, (u8 *)sta->addr, ETH_ALEN); 1490 bss->qos = sta->wme; 1491 common->bitrate_mask[NL80211_BAND_2GHZ] = 0; 1492 common->bitrate_mask[NL80211_BAND_5GHZ] = 0; 1493 common->min_rate = 0xffff; 1494 common->vif_info[0].is_ht = false; 1495 common->vif_info[0].sgi = false; 1496 common->vif_info[0].seq_start = 0; 1497 common->secinfo.ptk_cipher = 0; 1498 common->secinfo.gtk_cipher = 0; 1499 if (!common->iface_down) 1500 rsi_send_rx_filter_frame(common, 0); 1501 } 1502 mutex_unlock(&common->mutex); 1503 1504 return 0; 1505 } 1506 1507 /** 1508 * rsi_mac80211_set_antenna() - This function is used to configure 1509 * tx and rx antennas. 1510 * @hw: Pointer to the ieee80211_hw structure. 1511 * @tx_ant: Bitmap for tx antenna 1512 * @rx_ant: Bitmap for rx antenna 1513 * 1514 * Return: 0 on success, Negative error code on failure. 1515 */ 1516 static int rsi_mac80211_set_antenna(struct ieee80211_hw *hw, 1517 u32 tx_ant, u32 rx_ant) 1518 { 1519 struct rsi_hw *adapter = hw->priv; 1520 struct rsi_common *common = adapter->priv; 1521 u8 antenna = 0; 1522 1523 if (tx_ant > 1 || rx_ant > 1) { 1524 rsi_dbg(ERR_ZONE, 1525 "Invalid antenna selection (tx: %d, rx:%d)\n", 1526 tx_ant, rx_ant); 1527 rsi_dbg(ERR_ZONE, 1528 "Use 0 for int_ant, 1 for ext_ant\n"); 1529 return -EINVAL; 1530 } 1531 1532 rsi_dbg(INFO_ZONE, "%s: Antenna map Tx %x Rx %d\n", 1533 __func__, tx_ant, rx_ant); 1534 1535 mutex_lock(&common->mutex); 1536 1537 antenna = tx_ant ? ANTENNA_SEL_UFL : ANTENNA_SEL_INT; 1538 if (common->ant_in_use != antenna) 1539 if (rsi_set_antenna(common, antenna)) 1540 goto fail_set_antenna; 1541 1542 rsi_dbg(INFO_ZONE, "(%s) Antenna path configured successfully\n", 1543 tx_ant ? "UFL" : "INT"); 1544 1545 common->ant_in_use = antenna; 1546 1547 mutex_unlock(&common->mutex); 1548 1549 return 0; 1550 1551 fail_set_antenna: 1552 rsi_dbg(ERR_ZONE, "%s: Failed.\n", __func__); 1553 mutex_unlock(&common->mutex); 1554 return -EINVAL; 1555 } 1556 1557 /** 1558 * rsi_mac80211_get_antenna() - This function is used to configure 1559 * tx and rx antennas. 1560 * 1561 * @hw: Pointer to the ieee80211_hw structure. 1562 * @tx_ant: Bitmap for tx antenna 1563 * @rx_ant: Bitmap for rx antenna 1564 * 1565 * Return: 0 on success, negative error codes on failure. 1566 */ 1567 static int rsi_mac80211_get_antenna(struct ieee80211_hw *hw, 1568 u32 *tx_ant, u32 *rx_ant) 1569 { 1570 struct rsi_hw *adapter = hw->priv; 1571 struct rsi_common *common = adapter->priv; 1572 1573 mutex_lock(&common->mutex); 1574 1575 *tx_ant = (common->ant_in_use == ANTENNA_SEL_UFL) ? 1 : 0; 1576 *rx_ant = 0; 1577 1578 mutex_unlock(&common->mutex); 1579 1580 return 0; 1581 } 1582 1583 static int rsi_map_region_code(enum nl80211_dfs_regions region_code) 1584 { 1585 switch (region_code) { 1586 case NL80211_DFS_FCC: 1587 return RSI_REGION_FCC; 1588 case NL80211_DFS_ETSI: 1589 return RSI_REGION_ETSI; 1590 case NL80211_DFS_JP: 1591 return RSI_REGION_TELEC; 1592 case NL80211_DFS_UNSET: 1593 return RSI_REGION_WORLD; 1594 } 1595 return RSI_REGION_WORLD; 1596 } 1597 1598 static void rsi_reg_notify(struct wiphy *wiphy, 1599 struct regulatory_request *request) 1600 { 1601 struct ieee80211_supported_band *sband; 1602 struct ieee80211_channel *ch; 1603 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 1604 struct rsi_hw * adapter = hw->priv; 1605 struct rsi_common *common = adapter->priv; 1606 int i; 1607 1608 mutex_lock(&common->mutex); 1609 1610 rsi_dbg(INFO_ZONE, "country = %s dfs_region = %d\n", 1611 request->alpha2, request->dfs_region); 1612 1613 if (common->num_supp_bands > 1) { 1614 sband = wiphy->bands[NL80211_BAND_5GHZ]; 1615 1616 for (i = 0; i < sband->n_channels; i++) { 1617 ch = &sband->channels[i]; 1618 if (ch->flags & IEEE80211_CHAN_DISABLED) 1619 continue; 1620 1621 if (ch->flags & IEEE80211_CHAN_RADAR) 1622 ch->flags |= IEEE80211_CHAN_NO_IR; 1623 } 1624 } 1625 adapter->dfs_region = rsi_map_region_code(request->dfs_region); 1626 rsi_dbg(INFO_ZONE, "RSI region code = %d\n", adapter->dfs_region); 1627 1628 adapter->country[0] = request->alpha2[0]; 1629 adapter->country[1] = request->alpha2[1]; 1630 1631 mutex_unlock(&common->mutex); 1632 } 1633 1634 static void rsi_mac80211_rfkill_poll(struct ieee80211_hw *hw) 1635 { 1636 struct rsi_hw *adapter = hw->priv; 1637 struct rsi_common *common = adapter->priv; 1638 1639 mutex_lock(&common->mutex); 1640 if (common->fsm_state != FSM_MAC_INIT_DONE) 1641 wiphy_rfkill_set_hw_state(hw->wiphy, true); 1642 else 1643 wiphy_rfkill_set_hw_state(hw->wiphy, false); 1644 mutex_unlock(&common->mutex); 1645 } 1646 1647 static void rsi_resume_conn_channel(struct rsi_common *common) 1648 { 1649 struct rsi_hw *adapter = common->priv; 1650 struct ieee80211_vif *vif; 1651 int cnt; 1652 1653 for (cnt = 0; cnt < RSI_MAX_VIFS; cnt++) { 1654 vif = adapter->vifs[cnt]; 1655 if (!vif) 1656 continue; 1657 1658 if ((vif->type == NL80211_IFTYPE_AP) || 1659 (vif->type == NL80211_IFTYPE_P2P_GO)) { 1660 rsi_switch_channel(adapter, vif); 1661 break; 1662 } 1663 if (((vif->type == NL80211_IFTYPE_STATION) || 1664 (vif->type == NL80211_IFTYPE_P2P_CLIENT)) && 1665 vif->bss_conf.assoc) { 1666 rsi_switch_channel(adapter, vif); 1667 break; 1668 } 1669 } 1670 } 1671 1672 void rsi_roc_timeout(struct timer_list *t) 1673 { 1674 struct rsi_common *common = from_timer(common, t, roc_timer); 1675 1676 rsi_dbg(INFO_ZONE, "Remain on channel expired\n"); 1677 1678 mutex_lock(&common->mutex); 1679 ieee80211_remain_on_channel_expired(common->priv->hw); 1680 1681 if (timer_pending(&common->roc_timer)) 1682 del_timer(&common->roc_timer); 1683 1684 rsi_resume_conn_channel(common); 1685 mutex_unlock(&common->mutex); 1686 } 1687 1688 static int rsi_mac80211_roc(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1689 struct ieee80211_channel *chan, int duration, 1690 enum ieee80211_roc_type type) 1691 { 1692 struct rsi_hw *adapter = (struct rsi_hw *)hw->priv; 1693 struct rsi_common *common = (struct rsi_common *)adapter->priv; 1694 int status = 0; 1695 1696 rsi_dbg(INFO_ZONE, "***** Remain on channel *****\n"); 1697 1698 mutex_lock(&common->mutex); 1699 rsi_dbg(INFO_ZONE, "%s: channel: %d duration: %dms\n", 1700 __func__, chan->hw_value, duration); 1701 1702 if (timer_pending(&common->roc_timer)) { 1703 rsi_dbg(INFO_ZONE, "Stop on-going ROC\n"); 1704 del_timer(&common->roc_timer); 1705 } 1706 common->roc_timer.expires = msecs_to_jiffies(duration) + jiffies; 1707 add_timer(&common->roc_timer); 1708 1709 /* Configure band */ 1710 if (rsi_band_check(common, chan)) { 1711 rsi_dbg(ERR_ZONE, "Failed to set band\n"); 1712 status = -EINVAL; 1713 goto out; 1714 } 1715 1716 /* Configure channel */ 1717 if (rsi_set_channel(common, chan)) { 1718 rsi_dbg(ERR_ZONE, "Failed to set the channel\n"); 1719 status = -EINVAL; 1720 goto out; 1721 } 1722 1723 common->roc_vif = vif; 1724 ieee80211_ready_on_channel(hw); 1725 rsi_dbg(INFO_ZONE, "%s: Ready on channel :%d\n", 1726 __func__, chan->hw_value); 1727 1728 out: 1729 mutex_unlock(&common->mutex); 1730 1731 return status; 1732 } 1733 1734 static int rsi_mac80211_cancel_roc(struct ieee80211_hw *hw) 1735 { 1736 struct rsi_hw *adapter = hw->priv; 1737 struct rsi_common *common = adapter->priv; 1738 1739 rsi_dbg(INFO_ZONE, "Cancel remain on channel\n"); 1740 1741 mutex_lock(&common->mutex); 1742 if (!timer_pending(&common->roc_timer)) { 1743 mutex_unlock(&common->mutex); 1744 return 0; 1745 } 1746 1747 del_timer(&common->roc_timer); 1748 1749 rsi_resume_conn_channel(common); 1750 mutex_unlock(&common->mutex); 1751 1752 return 0; 1753 } 1754 1755 #ifdef CONFIG_PM 1756 static const struct wiphy_wowlan_support rsi_wowlan_support = { 1757 .flags = WIPHY_WOWLAN_ANY | 1758 WIPHY_WOWLAN_MAGIC_PKT | 1759 WIPHY_WOWLAN_DISCONNECT | 1760 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 1761 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 1762 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 1763 WIPHY_WOWLAN_4WAY_HANDSHAKE, 1764 }; 1765 1766 static u16 rsi_wow_map_triggers(struct rsi_common *common, 1767 struct cfg80211_wowlan *wowlan) 1768 { 1769 u16 wow_triggers = 0; 1770 1771 rsi_dbg(INFO_ZONE, "Mapping wowlan triggers\n"); 1772 1773 if (wowlan->any) 1774 wow_triggers |= RSI_WOW_ANY; 1775 if (wowlan->magic_pkt) 1776 wow_triggers |= RSI_WOW_MAGIC_PKT; 1777 if (wowlan->disconnect) 1778 wow_triggers |= RSI_WOW_DISCONNECT; 1779 if (wowlan->gtk_rekey_failure || wowlan->eap_identity_req || 1780 wowlan->four_way_handshake) 1781 wow_triggers |= RSI_WOW_GTK_REKEY; 1782 1783 return wow_triggers; 1784 } 1785 1786 int rsi_config_wowlan(struct rsi_hw *adapter, struct cfg80211_wowlan *wowlan) 1787 { 1788 struct rsi_common *common = adapter->priv; 1789 u16 triggers = 0; 1790 u16 rx_filter_word = 0; 1791 struct ieee80211_bss_conf *bss = &adapter->vifs[0]->bss_conf; 1792 1793 rsi_dbg(INFO_ZONE, "Config WoWLAN to device\n"); 1794 1795 if (WARN_ON(!wowlan)) { 1796 rsi_dbg(ERR_ZONE, "WoW triggers not enabled\n"); 1797 return -EINVAL; 1798 } 1799 1800 triggers = rsi_wow_map_triggers(common, wowlan); 1801 if (!triggers) { 1802 rsi_dbg(ERR_ZONE, "%s:No valid WoW triggers\n", __func__); 1803 return -EINVAL; 1804 } 1805 if (!bss->assoc) { 1806 rsi_dbg(ERR_ZONE, 1807 "Cannot configure WoWLAN (Station not connected)\n"); 1808 common->wow_flags |= RSI_WOW_NO_CONNECTION; 1809 return 0; 1810 } 1811 rsi_dbg(INFO_ZONE, "TRIGGERS %x\n", triggers); 1812 rsi_send_wowlan_request(common, triggers, 1); 1813 1814 /** 1815 * Increase the beacon_miss threshold & keep-alive timers in 1816 * vap_update frame 1817 */ 1818 rsi_send_vap_dynamic_update(common); 1819 1820 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | DISALLOW_BEACONS); 1821 rsi_send_rx_filter_frame(common, rx_filter_word); 1822 common->wow_flags |= RSI_WOW_ENABLED; 1823 1824 return 0; 1825 } 1826 EXPORT_SYMBOL(rsi_config_wowlan); 1827 1828 static int rsi_mac80211_suspend(struct ieee80211_hw *hw, 1829 struct cfg80211_wowlan *wowlan) 1830 { 1831 struct rsi_hw *adapter = hw->priv; 1832 struct rsi_common *common = adapter->priv; 1833 1834 rsi_dbg(INFO_ZONE, "%s: mac80211 suspend\n", __func__); 1835 mutex_lock(&common->mutex); 1836 if (rsi_config_wowlan(adapter, wowlan)) { 1837 rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n"); 1838 mutex_unlock(&common->mutex); 1839 return 1; 1840 } 1841 mutex_unlock(&common->mutex); 1842 1843 return 0; 1844 } 1845 1846 static int rsi_mac80211_resume(struct ieee80211_hw *hw) 1847 { 1848 u16 rx_filter_word = 0; 1849 struct rsi_hw *adapter = hw->priv; 1850 struct rsi_common *common = adapter->priv; 1851 1852 common->wow_flags = 0; 1853 1854 rsi_dbg(INFO_ZONE, "%s: mac80211 resume\n", __func__); 1855 1856 if (common->hibernate_resume) 1857 return 0; 1858 1859 mutex_lock(&common->mutex); 1860 rsi_send_wowlan_request(common, 0, 0); 1861 1862 rx_filter_word = (ALLOW_DATA_ASSOC_PEER | ALLOW_CTRL_ASSOC_PEER | 1863 ALLOW_MGMT_ASSOC_PEER); 1864 rsi_send_rx_filter_frame(common, rx_filter_word); 1865 mutex_unlock(&common->mutex); 1866 1867 return 0; 1868 } 1869 1870 #endif 1871 1872 static const struct ieee80211_ops mac80211_ops = { 1873 .tx = rsi_mac80211_tx, 1874 .start = rsi_mac80211_start, 1875 .stop = rsi_mac80211_stop, 1876 .add_interface = rsi_mac80211_add_interface, 1877 .remove_interface = rsi_mac80211_remove_interface, 1878 .config = rsi_mac80211_config, 1879 .bss_info_changed = rsi_mac80211_bss_info_changed, 1880 .conf_tx = rsi_mac80211_conf_tx, 1881 .configure_filter = rsi_mac80211_conf_filter, 1882 .set_key = rsi_mac80211_set_key, 1883 .set_rts_threshold = rsi_mac80211_set_rts_threshold, 1884 .set_bitrate_mask = rsi_mac80211_set_rate_mask, 1885 .ampdu_action = rsi_mac80211_ampdu_action, 1886 .sta_add = rsi_mac80211_sta_add, 1887 .sta_remove = rsi_mac80211_sta_remove, 1888 .set_antenna = rsi_mac80211_set_antenna, 1889 .get_antenna = rsi_mac80211_get_antenna, 1890 .rfkill_poll = rsi_mac80211_rfkill_poll, 1891 .remain_on_channel = rsi_mac80211_roc, 1892 .cancel_remain_on_channel = rsi_mac80211_cancel_roc, 1893 #ifdef CONFIG_PM 1894 .suspend = rsi_mac80211_suspend, 1895 .resume = rsi_mac80211_resume, 1896 #endif 1897 }; 1898 1899 /** 1900 * rsi_mac80211_attach() - This function is used to initialize Mac80211 stack. 1901 * @common: Pointer to the driver private structure. 1902 * 1903 * Return: 0 on success, negative error codes on failure. 1904 */ 1905 int rsi_mac80211_attach(struct rsi_common *common) 1906 { 1907 int status = 0; 1908 struct ieee80211_hw *hw = NULL; 1909 struct wiphy *wiphy = NULL; 1910 struct rsi_hw *adapter = common->priv; 1911 u8 addr_mask[ETH_ALEN] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x3}; 1912 1913 rsi_dbg(INIT_ZONE, "%s: Performing mac80211 attach\n", __func__); 1914 1915 hw = ieee80211_alloc_hw(sizeof(struct rsi_hw), &mac80211_ops); 1916 if (!hw) { 1917 rsi_dbg(ERR_ZONE, "%s: ieee80211 hw alloc failed\n", __func__); 1918 return -ENOMEM; 1919 } 1920 1921 wiphy = hw->wiphy; 1922 1923 SET_IEEE80211_DEV(hw, adapter->device); 1924 1925 hw->priv = adapter; 1926 adapter->hw = hw; 1927 1928 ieee80211_hw_set(hw, SIGNAL_DBM); 1929 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 1930 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 1931 ieee80211_hw_set(hw, SUPPORTS_PS); 1932 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 1933 1934 hw->queues = MAX_HW_QUEUES; 1935 hw->extra_tx_headroom = RSI_NEEDED_HEADROOM; 1936 1937 hw->max_rates = 1; 1938 hw->max_rate_tries = MAX_RETRIES; 1939 hw->uapsd_queues = RSI_IEEE80211_UAPSD_QUEUES; 1940 hw->uapsd_max_sp_len = IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL; 1941 1942 hw->max_tx_aggregation_subframes = 6; 1943 rsi_register_rates_channels(adapter, NL80211_BAND_2GHZ); 1944 rsi_register_rates_channels(adapter, NL80211_BAND_5GHZ); 1945 hw->rate_control_algorithm = "AARF"; 1946 1947 SET_IEEE80211_PERM_ADDR(hw, common->mac_addr); 1948 ether_addr_copy(hw->wiphy->addr_mask, addr_mask); 1949 1950 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1951 BIT(NL80211_IFTYPE_AP) | 1952 BIT(NL80211_IFTYPE_P2P_DEVICE) | 1953 BIT(NL80211_IFTYPE_P2P_CLIENT) | 1954 BIT(NL80211_IFTYPE_P2P_GO); 1955 1956 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; 1957 wiphy->retry_short = RETRY_SHORT; 1958 wiphy->retry_long = RETRY_LONG; 1959 wiphy->frag_threshold = IEEE80211_MAX_FRAG_THRESHOLD; 1960 wiphy->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 1961 wiphy->flags = 0; 1962 1963 wiphy->available_antennas_rx = 1; 1964 wiphy->available_antennas_tx = 1; 1965 wiphy->bands[NL80211_BAND_2GHZ] = 1966 &adapter->sbands[NL80211_BAND_2GHZ]; 1967 wiphy->bands[NL80211_BAND_5GHZ] = 1968 &adapter->sbands[NL80211_BAND_5GHZ]; 1969 1970 /* AP Parameters */ 1971 wiphy->max_ap_assoc_sta = rsi_max_ap_stas[common->oper_mode - 1]; 1972 common->max_stations = wiphy->max_ap_assoc_sta; 1973 rsi_dbg(ERR_ZONE, "Max Stations Allowed = %d\n", common->max_stations); 1974 hw->sta_data_size = sizeof(struct rsi_sta); 1975 wiphy->flags = WIPHY_FLAG_REPORTS_OBSS; 1976 wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 1977 wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER; 1978 wiphy->reg_notifier = rsi_reg_notify; 1979 1980 #ifdef CONFIG_PM 1981 wiphy->wowlan = &rsi_wowlan_support; 1982 #endif 1983 1984 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 1985 1986 /* Wi-Fi direct parameters */ 1987 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; 1988 wiphy->flags |= WIPHY_FLAG_OFFCHAN_TX; 1989 wiphy->max_remain_on_channel_duration = 10000; 1990 hw->max_listen_interval = 10; 1991 wiphy->iface_combinations = rsi_iface_combinations; 1992 wiphy->n_iface_combinations = ARRAY_SIZE(rsi_iface_combinations); 1993 1994 status = ieee80211_register_hw(hw); 1995 if (status) 1996 return status; 1997 1998 return rsi_init_dbgfs(adapter); 1999 } 2000