1 /* 2 * Marvell Wireless LAN device driver: station event handling 3 * 4 * Copyright (C) 2011-2014, Marvell International Ltd. 5 * 6 * This software file (the "File") is distributed by Marvell International 7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991 8 * (the "License"). You may use, redistribute and/or modify this File in 9 * accordance with the terms and conditions of the License, a copy of which 10 * is available by writing to the Free Software Foundation, Inc., 11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the 12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. 13 * 14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE 16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about 17 * this warranty disclaimer. 18 */ 19 20 #include "decl.h" 21 #include "ioctl.h" 22 #include "util.h" 23 #include "fw.h" 24 #include "main.h" 25 #include "wmm.h" 26 #include "11n.h" 27 28 #define MWIFIEX_IBSS_CONNECT_EVT_FIX_SIZE 12 29 30 static int mwifiex_check_ibss_peer_capabilties(struct mwifiex_private *priv, 31 struct mwifiex_sta_node *sta_ptr, 32 struct sk_buff *event) 33 { 34 int evt_len, ele_len; 35 u8 *curr; 36 struct ieee_types_header *ele_hdr; 37 struct mwifiex_ie_types_mgmt_frame *tlv_mgmt_frame; 38 const struct ieee80211_ht_cap *ht_cap; 39 const struct ieee80211_vht_cap *vht_cap; 40 41 skb_pull(event, MWIFIEX_IBSS_CONNECT_EVT_FIX_SIZE); 42 evt_len = event->len; 43 curr = event->data; 44 45 mwifiex_dbg_dump(priv->adapter, EVT_D, "ibss peer capabilties:", 46 event->data, event->len); 47 48 skb_push(event, MWIFIEX_IBSS_CONNECT_EVT_FIX_SIZE); 49 50 tlv_mgmt_frame = (void *)curr; 51 if (evt_len >= sizeof(*tlv_mgmt_frame) && 52 le16_to_cpu(tlv_mgmt_frame->header.type) == 53 TLV_TYPE_UAP_MGMT_FRAME) { 54 /* Locate curr pointer to the start of beacon tlv, 55 * timestamp 8 bytes, beacon intervel 2 bytes, 56 * capability info 2 bytes, totally 12 byte beacon header 57 */ 58 evt_len = le16_to_cpu(tlv_mgmt_frame->header.len); 59 curr += (sizeof(*tlv_mgmt_frame) + 12); 60 } else { 61 mwifiex_dbg(priv->adapter, MSG, 62 "management frame tlv not found!\n"); 63 return 0; 64 } 65 66 while (evt_len >= sizeof(*ele_hdr)) { 67 ele_hdr = (struct ieee_types_header *)curr; 68 ele_len = ele_hdr->len; 69 70 if (evt_len < ele_len + sizeof(*ele_hdr)) 71 break; 72 73 switch (ele_hdr->element_id) { 74 case WLAN_EID_HT_CAPABILITY: 75 sta_ptr->is_11n_enabled = true; 76 ht_cap = (void *)(ele_hdr + 2); 77 sta_ptr->max_amsdu = le16_to_cpu(ht_cap->cap_info) & 78 IEEE80211_HT_CAP_MAX_AMSDU ? 79 MWIFIEX_TX_DATA_BUF_SIZE_8K : 80 MWIFIEX_TX_DATA_BUF_SIZE_4K; 81 mwifiex_dbg(priv->adapter, INFO, 82 "11n enabled!, max_amsdu : %d\n", 83 sta_ptr->max_amsdu); 84 break; 85 86 case WLAN_EID_VHT_CAPABILITY: 87 sta_ptr->is_11ac_enabled = true; 88 vht_cap = (void *)(ele_hdr + 2); 89 /* check VHT MAXMPDU capability */ 90 switch (le32_to_cpu(vht_cap->vht_cap_info) & 0x3) { 91 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454: 92 sta_ptr->max_amsdu = 93 MWIFIEX_TX_DATA_BUF_SIZE_12K; 94 break; 95 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991: 96 sta_ptr->max_amsdu = 97 MWIFIEX_TX_DATA_BUF_SIZE_8K; 98 break; 99 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895: 100 sta_ptr->max_amsdu = 101 MWIFIEX_TX_DATA_BUF_SIZE_4K; 102 default: 103 break; 104 } 105 106 mwifiex_dbg(priv->adapter, INFO, 107 "11ac enabled!, max_amsdu : %d\n", 108 sta_ptr->max_amsdu); 109 break; 110 default: 111 break; 112 } 113 114 curr += (ele_len + sizeof(*ele_hdr)); 115 evt_len -= (ele_len + sizeof(*ele_hdr)); 116 } 117 118 return 0; 119 } 120 121 /* 122 * This function resets the connection state. 123 * 124 * The function is invoked after receiving a disconnect event from firmware, 125 * and performs the following actions - 126 * - Set media status to disconnected 127 * - Clean up Tx and Rx packets 128 * - Resets SNR/NF/RSSI value in driver 129 * - Resets security configurations in driver 130 * - Enables auto data rate 131 * - Saves the previous SSID and BSSID so that they can 132 * be used for re-association, if required 133 * - Erases current SSID and BSSID information 134 * - Sends a disconnect event to upper layers/applications. 135 */ 136 void mwifiex_reset_connect_state(struct mwifiex_private *priv, u16 reason_code, 137 bool from_ap) 138 { 139 struct mwifiex_adapter *adapter = priv->adapter; 140 141 if (!priv->media_connected) 142 return; 143 144 mwifiex_dbg(adapter, INFO, 145 "info: handles disconnect event\n"); 146 147 priv->media_connected = false; 148 149 priv->scan_block = false; 150 priv->port_open = false; 151 152 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) && 153 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) { 154 mwifiex_disable_all_tdls_links(priv); 155 156 if (priv->adapter->auto_tdls) 157 mwifiex_clean_auto_tdls(priv); 158 } 159 160 /* Free Tx and Rx packets, report disconnect to upper layer */ 161 mwifiex_clean_txrx(priv); 162 163 /* Reset SNR/NF/RSSI values */ 164 priv->data_rssi_last = 0; 165 priv->data_nf_last = 0; 166 priv->data_rssi_avg = 0; 167 priv->data_nf_avg = 0; 168 priv->bcn_rssi_last = 0; 169 priv->bcn_nf_last = 0; 170 priv->bcn_rssi_avg = 0; 171 priv->bcn_nf_avg = 0; 172 priv->rxpd_rate = 0; 173 priv->rxpd_htinfo = 0; 174 priv->sec_info.wpa_enabled = false; 175 priv->sec_info.wpa2_enabled = false; 176 priv->wpa_ie_len = 0; 177 178 priv->sec_info.wapi_enabled = false; 179 priv->wapi_ie_len = 0; 180 priv->sec_info.wapi_key_on = false; 181 182 priv->sec_info.encryption_mode = 0; 183 184 /* Enable auto data rate */ 185 priv->is_data_rate_auto = true; 186 priv->data_rate = 0; 187 188 priv->assoc_resp_ht_param = 0; 189 priv->ht_param_present = false; 190 191 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA || 192 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) && priv->hist_data) 193 mwifiex_hist_data_reset(priv); 194 195 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) { 196 priv->adhoc_state = ADHOC_IDLE; 197 priv->adhoc_is_link_sensed = false; 198 } 199 200 /* 201 * Memorize the previous SSID and BSSID so 202 * it could be used for re-assoc 203 */ 204 205 mwifiex_dbg(adapter, INFO, 206 "info: previous SSID=%s, SSID len=%u\n", 207 priv->prev_ssid.ssid, priv->prev_ssid.ssid_len); 208 209 mwifiex_dbg(adapter, INFO, 210 "info: current SSID=%s, SSID len=%u\n", 211 priv->curr_bss_params.bss_descriptor.ssid.ssid, 212 priv->curr_bss_params.bss_descriptor.ssid.ssid_len); 213 214 memcpy(&priv->prev_ssid, 215 &priv->curr_bss_params.bss_descriptor.ssid, 216 sizeof(struct cfg80211_ssid)); 217 218 memcpy(priv->prev_bssid, 219 priv->curr_bss_params.bss_descriptor.mac_address, ETH_ALEN); 220 221 /* Need to erase the current SSID and BSSID info */ 222 memset(&priv->curr_bss_params, 0x00, sizeof(priv->curr_bss_params)); 223 224 adapter->tx_lock_flag = false; 225 adapter->pps_uapsd_mode = false; 226 227 if (adapter->is_cmd_timedout && adapter->curr_cmd) 228 return; 229 priv->media_connected = false; 230 mwifiex_dbg(adapter, MSG, 231 "info: successfully disconnected from %pM: reason code %d\n", 232 priv->cfg_bssid, reason_code); 233 if (priv->bss_mode == NL80211_IFTYPE_STATION || 234 priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) { 235 cfg80211_disconnected(priv->netdev, reason_code, NULL, 0, 236 !from_ap, GFP_KERNEL); 237 } 238 eth_zero_addr(priv->cfg_bssid); 239 240 mwifiex_stop_net_dev_queue(priv->netdev, adapter); 241 if (netif_carrier_ok(priv->netdev)) 242 netif_carrier_off(priv->netdev); 243 244 mwifiex_send_cmd(priv, HostCmd_CMD_GTK_REKEY_OFFLOAD_CFG, 245 HostCmd_ACT_GEN_REMOVE, 0, NULL, false); 246 } 247 248 static int mwifiex_parse_tdls_event(struct mwifiex_private *priv, 249 struct sk_buff *event_skb) 250 { 251 int ret = 0; 252 struct mwifiex_adapter *adapter = priv->adapter; 253 struct mwifiex_sta_node *sta_ptr; 254 struct mwifiex_tdls_generic_event *tdls_evt = 255 (void *)event_skb->data + sizeof(adapter->event_cause); 256 u8 *mac = tdls_evt->peer_mac; 257 258 /* reserved 2 bytes are not mandatory in tdls event */ 259 if (event_skb->len < (sizeof(struct mwifiex_tdls_generic_event) - 260 sizeof(u16) - sizeof(adapter->event_cause))) { 261 mwifiex_dbg(adapter, ERROR, "Invalid event length!\n"); 262 return -1; 263 } 264 265 sta_ptr = mwifiex_get_sta_entry(priv, tdls_evt->peer_mac); 266 if (!sta_ptr) { 267 mwifiex_dbg(adapter, ERROR, "cannot get sta entry!\n"); 268 return -1; 269 } 270 271 switch (le16_to_cpu(tdls_evt->type)) { 272 case TDLS_EVENT_LINK_TEAR_DOWN: 273 cfg80211_tdls_oper_request(priv->netdev, 274 tdls_evt->peer_mac, 275 NL80211_TDLS_TEARDOWN, 276 le16_to_cpu(tdls_evt->u.reason_code), 277 GFP_KERNEL); 278 break; 279 case TDLS_EVENT_CHAN_SWITCH_RESULT: 280 mwifiex_dbg(adapter, EVENT, "tdls channel switch result :\n"); 281 mwifiex_dbg(adapter, EVENT, 282 "status=0x%x, reason=0x%x cur_chan=%d\n", 283 tdls_evt->u.switch_result.status, 284 tdls_evt->u.switch_result.reason, 285 tdls_evt->u.switch_result.cur_chan); 286 287 /* tdls channel switch failed */ 288 if (tdls_evt->u.switch_result.status != 0) { 289 switch (tdls_evt->u.switch_result.cur_chan) { 290 case TDLS_BASE_CHANNEL: 291 sta_ptr->tdls_status = TDLS_IN_BASE_CHAN; 292 break; 293 case TDLS_OFF_CHANNEL: 294 sta_ptr->tdls_status = TDLS_IN_OFF_CHAN; 295 break; 296 default: 297 break; 298 } 299 return ret; 300 } 301 302 /* tdls channel switch success */ 303 switch (tdls_evt->u.switch_result.cur_chan) { 304 case TDLS_BASE_CHANNEL: 305 if (sta_ptr->tdls_status == TDLS_IN_BASE_CHAN) 306 break; 307 mwifiex_update_ralist_tx_pause_in_tdls_cs(priv, mac, 308 false); 309 sta_ptr->tdls_status = TDLS_IN_BASE_CHAN; 310 break; 311 case TDLS_OFF_CHANNEL: 312 if (sta_ptr->tdls_status == TDLS_IN_OFF_CHAN) 313 break; 314 mwifiex_update_ralist_tx_pause_in_tdls_cs(priv, mac, 315 true); 316 sta_ptr->tdls_status = TDLS_IN_OFF_CHAN; 317 break; 318 default: 319 break; 320 } 321 322 break; 323 case TDLS_EVENT_START_CHAN_SWITCH: 324 mwifiex_dbg(adapter, EVENT, "tdls start channel switch...\n"); 325 sta_ptr->tdls_status = TDLS_CHAN_SWITCHING; 326 break; 327 case TDLS_EVENT_CHAN_SWITCH_STOPPED: 328 mwifiex_dbg(adapter, EVENT, 329 "tdls chan switch stopped, reason=%d\n", 330 tdls_evt->u.cs_stop_reason); 331 break; 332 default: 333 break; 334 } 335 336 return ret; 337 } 338 339 static void mwifiex_process_uap_tx_pause(struct mwifiex_private *priv, 340 struct mwifiex_ie_types_header *tlv) 341 { 342 struct mwifiex_tx_pause_tlv *tp; 343 struct mwifiex_sta_node *sta_ptr; 344 unsigned long flags; 345 346 tp = (void *)tlv; 347 mwifiex_dbg(priv->adapter, EVENT, 348 "uap tx_pause: %pM pause=%d, pkts=%d\n", 349 tp->peermac, tp->tx_pause, 350 tp->pkt_cnt); 351 352 if (ether_addr_equal(tp->peermac, priv->netdev->dev_addr)) { 353 if (tp->tx_pause) 354 priv->port_open = false; 355 else 356 priv->port_open = true; 357 } else if (is_multicast_ether_addr(tp->peermac)) { 358 mwifiex_update_ralist_tx_pause(priv, tp->peermac, tp->tx_pause); 359 } else { 360 spin_lock_irqsave(&priv->sta_list_spinlock, flags); 361 sta_ptr = mwifiex_get_sta_entry(priv, tp->peermac); 362 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); 363 364 if (sta_ptr && sta_ptr->tx_pause != tp->tx_pause) { 365 sta_ptr->tx_pause = tp->tx_pause; 366 mwifiex_update_ralist_tx_pause(priv, tp->peermac, 367 tp->tx_pause); 368 } 369 } 370 } 371 372 static void mwifiex_process_sta_tx_pause(struct mwifiex_private *priv, 373 struct mwifiex_ie_types_header *tlv) 374 { 375 struct mwifiex_tx_pause_tlv *tp; 376 struct mwifiex_sta_node *sta_ptr; 377 int status; 378 unsigned long flags; 379 380 tp = (void *)tlv; 381 mwifiex_dbg(priv->adapter, EVENT, 382 "sta tx_pause: %pM pause=%d, pkts=%d\n", 383 tp->peermac, tp->tx_pause, 384 tp->pkt_cnt); 385 386 if (ether_addr_equal(tp->peermac, priv->cfg_bssid)) { 387 if (tp->tx_pause) 388 priv->port_open = false; 389 else 390 priv->port_open = true; 391 } else { 392 if (!ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) 393 return; 394 395 status = mwifiex_get_tdls_link_status(priv, tp->peermac); 396 if (mwifiex_is_tdls_link_setup(status)) { 397 spin_lock_irqsave(&priv->sta_list_spinlock, flags); 398 sta_ptr = mwifiex_get_sta_entry(priv, tp->peermac); 399 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); 400 401 if (sta_ptr && sta_ptr->tx_pause != tp->tx_pause) { 402 sta_ptr->tx_pause = tp->tx_pause; 403 mwifiex_update_ralist_tx_pause(priv, 404 tp->peermac, 405 tp->tx_pause); 406 } 407 } 408 } 409 } 410 411 void mwifiex_process_multi_chan_event(struct mwifiex_private *priv, 412 struct sk_buff *event_skb) 413 { 414 struct mwifiex_ie_types_multi_chan_info *chan_info; 415 struct mwifiex_ie_types_mc_group_info *grp_info; 416 struct mwifiex_adapter *adapter = priv->adapter; 417 struct mwifiex_ie_types_header *tlv; 418 u16 tlv_buf_left, tlv_type, tlv_len; 419 int intf_num, bss_type, bss_num, i; 420 struct mwifiex_private *intf_priv; 421 422 tlv_buf_left = event_skb->len - sizeof(u32); 423 chan_info = (void *)event_skb->data + sizeof(u32); 424 425 if (le16_to_cpu(chan_info->header.type) != TLV_TYPE_MULTI_CHAN_INFO || 426 tlv_buf_left < sizeof(struct mwifiex_ie_types_multi_chan_info)) { 427 mwifiex_dbg(adapter, ERROR, 428 "unknown TLV in chan_info event\n"); 429 return; 430 } 431 432 adapter->usb_mc_status = le16_to_cpu(chan_info->status); 433 mwifiex_dbg(adapter, EVENT, "multi chan operation %s\n", 434 adapter->usb_mc_status ? "started" : "over"); 435 436 tlv_buf_left -= sizeof(struct mwifiex_ie_types_multi_chan_info); 437 tlv = (struct mwifiex_ie_types_header *)chan_info->tlv_buffer; 438 439 while (tlv_buf_left >= (int)sizeof(struct mwifiex_ie_types_header)) { 440 tlv_type = le16_to_cpu(tlv->type); 441 tlv_len = le16_to_cpu(tlv->len); 442 if ((sizeof(struct mwifiex_ie_types_header) + tlv_len) > 443 tlv_buf_left) { 444 mwifiex_dbg(adapter, ERROR, "wrong tlv: tlvLen=%d,\t" 445 "tlvBufLeft=%d\n", tlv_len, tlv_buf_left); 446 break; 447 } 448 if (tlv_type != TLV_TYPE_MC_GROUP_INFO) { 449 mwifiex_dbg(adapter, ERROR, "wrong tlv type: 0x%x\n", 450 tlv_type); 451 break; 452 } 453 454 grp_info = (struct mwifiex_ie_types_mc_group_info *)tlv; 455 intf_num = grp_info->intf_num; 456 for (i = 0; i < intf_num; i++) { 457 bss_type = grp_info->bss_type_numlist[i] >> 4; 458 bss_num = grp_info->bss_type_numlist[i] & BSS_NUM_MASK; 459 intf_priv = mwifiex_get_priv_by_id(adapter, bss_num, 460 bss_type); 461 if (!intf_priv) { 462 mwifiex_dbg(adapter, ERROR, 463 "Invalid bss_type bss_num\t" 464 "in multi channel event\n"); 465 continue; 466 } 467 if (adapter->iface_type == MWIFIEX_USB) { 468 u8 ep; 469 470 ep = grp_info->hid_num.usb_ep_num; 471 if (ep == MWIFIEX_USB_EP_DATA || 472 ep == MWIFIEX_USB_EP_DATA_CH2) 473 intf_priv->usb_port = ep; 474 } 475 } 476 477 tlv_buf_left -= sizeof(struct mwifiex_ie_types_header) + 478 tlv_len; 479 tlv = (void *)((u8 *)tlv + tlv_len + 480 sizeof(struct mwifiex_ie_types_header)); 481 } 482 483 if (adapter->iface_type == MWIFIEX_USB) { 484 adapter->tx_lock_flag = true; 485 adapter->usb_mc_setup = true; 486 mwifiex_multi_chan_resync(adapter); 487 } 488 } 489 490 void mwifiex_process_tx_pause_event(struct mwifiex_private *priv, 491 struct sk_buff *event_skb) 492 { 493 struct mwifiex_ie_types_header *tlv; 494 u16 tlv_type, tlv_len; 495 int tlv_buf_left; 496 497 if (!priv->media_connected) { 498 mwifiex_dbg(priv->adapter, ERROR, 499 "tx_pause event while disconnected; bss_role=%d\n", 500 priv->bss_role); 501 return; 502 } 503 504 tlv_buf_left = event_skb->len - sizeof(u32); 505 tlv = (void *)event_skb->data + sizeof(u32); 506 507 while (tlv_buf_left >= (int)sizeof(struct mwifiex_ie_types_header)) { 508 tlv_type = le16_to_cpu(tlv->type); 509 tlv_len = le16_to_cpu(tlv->len); 510 if ((sizeof(struct mwifiex_ie_types_header) + tlv_len) > 511 tlv_buf_left) { 512 mwifiex_dbg(priv->adapter, ERROR, 513 "wrong tlv: tlvLen=%d, tlvBufLeft=%d\n", 514 tlv_len, tlv_buf_left); 515 break; 516 } 517 if (tlv_type == TLV_TYPE_TX_PAUSE) { 518 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) 519 mwifiex_process_sta_tx_pause(priv, tlv); 520 else 521 mwifiex_process_uap_tx_pause(priv, tlv); 522 } 523 524 tlv_buf_left -= sizeof(struct mwifiex_ie_types_header) + 525 tlv_len; 526 tlv = (void *)((u8 *)tlv + tlv_len + 527 sizeof(struct mwifiex_ie_types_header)); 528 } 529 530 } 531 532 /* 533 * This function handles coex events generated by firmware 534 */ 535 void mwifiex_bt_coex_wlan_param_update_event(struct mwifiex_private *priv, 536 struct sk_buff *event_skb) 537 { 538 struct mwifiex_adapter *adapter = priv->adapter; 539 struct mwifiex_ie_types_header *tlv; 540 struct mwifiex_ie_types_btcoex_aggr_win_size *winsizetlv; 541 struct mwifiex_ie_types_btcoex_scan_time *scantlv; 542 s32 len = event_skb->len - sizeof(u32); 543 u8 *cur_ptr = event_skb->data + sizeof(u32); 544 u16 tlv_type, tlv_len; 545 546 while (len >= sizeof(struct mwifiex_ie_types_header)) { 547 tlv = (struct mwifiex_ie_types_header *)cur_ptr; 548 tlv_len = le16_to_cpu(tlv->len); 549 tlv_type = le16_to_cpu(tlv->type); 550 551 if ((tlv_len + sizeof(struct mwifiex_ie_types_header)) > len) 552 break; 553 switch (tlv_type) { 554 case TLV_BTCOEX_WL_AGGR_WINSIZE: 555 winsizetlv = 556 (struct mwifiex_ie_types_btcoex_aggr_win_size *)tlv; 557 adapter->coex_win_size = winsizetlv->coex_win_size; 558 adapter->coex_tx_win_size = 559 winsizetlv->tx_win_size; 560 adapter->coex_rx_win_size = 561 winsizetlv->rx_win_size; 562 mwifiex_coex_ampdu_rxwinsize(adapter); 563 mwifiex_update_ampdu_txwinsize(adapter); 564 break; 565 566 case TLV_BTCOEX_WL_SCANTIME: 567 scantlv = 568 (struct mwifiex_ie_types_btcoex_scan_time *)tlv; 569 adapter->coex_scan = scantlv->coex_scan; 570 adapter->coex_min_scan_time = le16_to_cpu(scantlv->min_scan_time); 571 adapter->coex_max_scan_time = le16_to_cpu(scantlv->max_scan_time); 572 break; 573 574 default: 575 break; 576 } 577 578 len -= tlv_len + sizeof(struct mwifiex_ie_types_header); 579 cur_ptr += tlv_len + 580 sizeof(struct mwifiex_ie_types_header); 581 } 582 583 dev_dbg(adapter->dev, "coex_scan=%d min_scan=%d coex_win=%d, tx_win=%d rx_win=%d\n", 584 adapter->coex_scan, adapter->coex_min_scan_time, 585 adapter->coex_win_size, adapter->coex_tx_win_size, 586 adapter->coex_rx_win_size); 587 } 588 589 /* 590 * This function handles events generated by firmware. 591 * 592 * This is a generic function and handles all events. 593 * 594 * Event specific routines are called by this function based 595 * upon the generated event cause. 596 * 597 * For the following events, the function just forwards them to upper 598 * layers, optionally recording the change - 599 * - EVENT_LINK_SENSED 600 * - EVENT_MIC_ERR_UNICAST 601 * - EVENT_MIC_ERR_MULTICAST 602 * - EVENT_PORT_RELEASE 603 * - EVENT_RSSI_LOW 604 * - EVENT_SNR_LOW 605 * - EVENT_MAX_FAIL 606 * - EVENT_RSSI_HIGH 607 * - EVENT_SNR_HIGH 608 * - EVENT_DATA_RSSI_LOW 609 * - EVENT_DATA_SNR_LOW 610 * - EVENT_DATA_RSSI_HIGH 611 * - EVENT_DATA_SNR_HIGH 612 * - EVENT_LINK_QUALITY 613 * - EVENT_PRE_BEACON_LOST 614 * - EVENT_IBSS_COALESCED 615 * - EVENT_IBSS_STA_CONNECT 616 * - EVENT_IBSS_STA_DISCONNECT 617 * - EVENT_WEP_ICV_ERR 618 * - EVENT_BW_CHANGE 619 * - EVENT_HOSTWAKE_STAIE 620 * 621 * For the following events, no action is taken - 622 * - EVENT_MIB_CHANGED 623 * - EVENT_INIT_DONE 624 * - EVENT_DUMMY_HOST_WAKEUP_SIGNAL 625 * 626 * Rest of the supported events requires driver handling - 627 * - EVENT_DEAUTHENTICATED 628 * - EVENT_DISASSOCIATED 629 * - EVENT_LINK_LOST 630 * - EVENT_PS_SLEEP 631 * - EVENT_PS_AWAKE 632 * - EVENT_DEEP_SLEEP_AWAKE 633 * - EVENT_HS_ACT_REQ 634 * - EVENT_ADHOC_BCN_LOST 635 * - EVENT_BG_SCAN_REPORT 636 * - EVENT_WMM_STATUS_CHANGE 637 * - EVENT_ADDBA 638 * - EVENT_DELBA 639 * - EVENT_BA_STREAM_TIEMOUT 640 * - EVENT_AMSDU_AGGR_CTRL 641 */ 642 int mwifiex_process_sta_event(struct mwifiex_private *priv) 643 { 644 struct mwifiex_adapter *adapter = priv->adapter; 645 int ret = 0, i; 646 u32 eventcause = adapter->event_cause; 647 u16 ctrl, reason_code; 648 u8 ibss_sta_addr[ETH_ALEN]; 649 struct mwifiex_sta_node *sta_ptr; 650 651 switch (eventcause) { 652 case EVENT_DUMMY_HOST_WAKEUP_SIGNAL: 653 mwifiex_dbg(adapter, ERROR, 654 "invalid EVENT: DUMMY_HOST_WAKEUP_SIGNAL, ignore it\n"); 655 break; 656 case EVENT_LINK_SENSED: 657 mwifiex_dbg(adapter, EVENT, "event: LINK_SENSED\n"); 658 if (!netif_carrier_ok(priv->netdev)) 659 netif_carrier_on(priv->netdev); 660 mwifiex_wake_up_net_dev_queue(priv->netdev, adapter); 661 break; 662 663 case EVENT_DEAUTHENTICATED: 664 mwifiex_dbg(adapter, EVENT, "event: Deauthenticated\n"); 665 if (priv->wps.session_enable) { 666 mwifiex_dbg(adapter, INFO, 667 "info: receive deauth event in wps session\n"); 668 break; 669 } 670 adapter->dbg.num_event_deauth++; 671 if (priv->media_connected) { 672 reason_code = 673 le16_to_cpu(*(__le16 *)adapter->event_body); 674 mwifiex_reset_connect_state(priv, reason_code, true); 675 } 676 break; 677 678 case EVENT_DISASSOCIATED: 679 mwifiex_dbg(adapter, EVENT, "event: Disassociated\n"); 680 if (priv->wps.session_enable) { 681 mwifiex_dbg(adapter, INFO, 682 "info: receive disassoc event in wps session\n"); 683 break; 684 } 685 adapter->dbg.num_event_disassoc++; 686 if (priv->media_connected) { 687 reason_code = 688 le16_to_cpu(*(__le16 *)adapter->event_body); 689 mwifiex_reset_connect_state(priv, reason_code, true); 690 } 691 break; 692 693 case EVENT_LINK_LOST: 694 mwifiex_dbg(adapter, EVENT, "event: Link lost\n"); 695 adapter->dbg.num_event_link_lost++; 696 if (priv->media_connected) { 697 reason_code = 698 le16_to_cpu(*(__le16 *)adapter->event_body); 699 mwifiex_reset_connect_state(priv, reason_code, true); 700 } 701 break; 702 703 case EVENT_PS_SLEEP: 704 mwifiex_dbg(adapter, EVENT, "info: EVENT: SLEEP\n"); 705 706 adapter->ps_state = PS_STATE_PRE_SLEEP; 707 708 mwifiex_check_ps_cond(adapter); 709 break; 710 711 case EVENT_PS_AWAKE: 712 mwifiex_dbg(adapter, EVENT, "info: EVENT: AWAKE\n"); 713 if (!adapter->pps_uapsd_mode && 714 (priv->port_open || 715 (priv->bss_mode == NL80211_IFTYPE_ADHOC)) && 716 priv->media_connected && adapter->sleep_period.period) { 717 adapter->pps_uapsd_mode = true; 718 mwifiex_dbg(adapter, EVENT, 719 "event: PPS/UAPSD mode activated\n"); 720 } 721 adapter->tx_lock_flag = false; 722 if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) { 723 if (mwifiex_check_last_packet_indication(priv)) { 724 if (adapter->data_sent || 725 (adapter->if_ops.is_port_ready && 726 !adapter->if_ops.is_port_ready(priv))) { 727 adapter->ps_state = PS_STATE_AWAKE; 728 adapter->pm_wakeup_card_req = false; 729 adapter->pm_wakeup_fw_try = false; 730 del_timer(&adapter->wakeup_timer); 731 break; 732 } 733 if (!mwifiex_send_null_packet 734 (priv, 735 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET | 736 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) 737 adapter->ps_state = 738 PS_STATE_SLEEP; 739 return 0; 740 } 741 } 742 adapter->ps_state = PS_STATE_AWAKE; 743 adapter->pm_wakeup_card_req = false; 744 adapter->pm_wakeup_fw_try = false; 745 del_timer(&adapter->wakeup_timer); 746 747 break; 748 749 case EVENT_DEEP_SLEEP_AWAKE: 750 adapter->if_ops.wakeup_complete(adapter); 751 mwifiex_dbg(adapter, EVENT, "event: DS_AWAKE\n"); 752 if (adapter->is_deep_sleep) 753 adapter->is_deep_sleep = false; 754 break; 755 756 case EVENT_HS_ACT_REQ: 757 mwifiex_dbg(adapter, EVENT, "event: HS_ACT_REQ\n"); 758 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_HS_CFG_ENH, 759 0, 0, NULL, false); 760 break; 761 762 case EVENT_MIC_ERR_UNICAST: 763 mwifiex_dbg(adapter, EVENT, "event: UNICAST MIC ERROR\n"); 764 cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid, 765 NL80211_KEYTYPE_PAIRWISE, 766 -1, NULL, GFP_KERNEL); 767 break; 768 769 case EVENT_MIC_ERR_MULTICAST: 770 mwifiex_dbg(adapter, EVENT, "event: MULTICAST MIC ERROR\n"); 771 cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid, 772 NL80211_KEYTYPE_GROUP, 773 -1, NULL, GFP_KERNEL); 774 break; 775 case EVENT_MIB_CHANGED: 776 case EVENT_INIT_DONE: 777 break; 778 779 case EVENT_ADHOC_BCN_LOST: 780 mwifiex_dbg(adapter, EVENT, "event: ADHOC_BCN_LOST\n"); 781 priv->adhoc_is_link_sensed = false; 782 mwifiex_clean_txrx(priv); 783 mwifiex_stop_net_dev_queue(priv->netdev, adapter); 784 if (netif_carrier_ok(priv->netdev)) 785 netif_carrier_off(priv->netdev); 786 break; 787 788 case EVENT_BG_SCAN_REPORT: 789 mwifiex_dbg(adapter, EVENT, "event: BGS_REPORT\n"); 790 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_BG_SCAN_QUERY, 791 HostCmd_ACT_GEN_GET, 0, NULL, false); 792 break; 793 794 case EVENT_BG_SCAN_STOPPED: 795 dev_dbg(adapter->dev, "event: BGS_STOPPED\n"); 796 cfg80211_sched_scan_stopped(priv->wdev.wiphy); 797 if (priv->sched_scanning) 798 priv->sched_scanning = false; 799 break; 800 801 case EVENT_PORT_RELEASE: 802 mwifiex_dbg(adapter, EVENT, "event: PORT RELEASE\n"); 803 priv->port_open = true; 804 break; 805 806 case EVENT_EXT_SCAN_REPORT: 807 mwifiex_dbg(adapter, EVENT, "event: EXT_SCAN Report\n"); 808 /* We intend to skip this event during suspend, but handle 809 * it in interface disabled case 810 */ 811 if (adapter->ext_scan && (!priv->scan_aborting || 812 !netif_running(priv->netdev))) 813 ret = mwifiex_handle_event_ext_scan_report(priv, 814 adapter->event_skb->data); 815 816 break; 817 818 case EVENT_WMM_STATUS_CHANGE: 819 mwifiex_dbg(adapter, EVENT, "event: WMM status changed\n"); 820 ret = mwifiex_send_cmd(priv, HostCmd_CMD_WMM_GET_STATUS, 821 0, 0, NULL, false); 822 break; 823 824 case EVENT_RSSI_LOW: 825 cfg80211_cqm_rssi_notify(priv->netdev, 826 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, 827 0, GFP_KERNEL); 828 mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO, 829 HostCmd_ACT_GEN_GET, 0, NULL, false); 830 priv->subsc_evt_rssi_state = RSSI_LOW_RECVD; 831 mwifiex_dbg(adapter, EVENT, "event: Beacon RSSI_LOW\n"); 832 break; 833 case EVENT_SNR_LOW: 834 mwifiex_dbg(adapter, EVENT, "event: Beacon SNR_LOW\n"); 835 break; 836 case EVENT_MAX_FAIL: 837 mwifiex_dbg(adapter, EVENT, "event: MAX_FAIL\n"); 838 break; 839 case EVENT_RSSI_HIGH: 840 cfg80211_cqm_rssi_notify(priv->netdev, 841 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, 842 0, GFP_KERNEL); 843 mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO, 844 HostCmd_ACT_GEN_GET, 0, NULL, false); 845 priv->subsc_evt_rssi_state = RSSI_HIGH_RECVD; 846 mwifiex_dbg(adapter, EVENT, "event: Beacon RSSI_HIGH\n"); 847 break; 848 case EVENT_SNR_HIGH: 849 mwifiex_dbg(adapter, EVENT, "event: Beacon SNR_HIGH\n"); 850 break; 851 case EVENT_DATA_RSSI_LOW: 852 mwifiex_dbg(adapter, EVENT, "event: Data RSSI_LOW\n"); 853 break; 854 case EVENT_DATA_SNR_LOW: 855 mwifiex_dbg(adapter, EVENT, "event: Data SNR_LOW\n"); 856 break; 857 case EVENT_DATA_RSSI_HIGH: 858 mwifiex_dbg(adapter, EVENT, "event: Data RSSI_HIGH\n"); 859 break; 860 case EVENT_DATA_SNR_HIGH: 861 mwifiex_dbg(adapter, EVENT, "event: Data SNR_HIGH\n"); 862 break; 863 case EVENT_LINK_QUALITY: 864 mwifiex_dbg(adapter, EVENT, "event: Link Quality\n"); 865 break; 866 case EVENT_PRE_BEACON_LOST: 867 mwifiex_dbg(adapter, EVENT, "event: Pre-Beacon Lost\n"); 868 break; 869 case EVENT_IBSS_COALESCED: 870 mwifiex_dbg(adapter, EVENT, "event: IBSS_COALESCED\n"); 871 ret = mwifiex_send_cmd(priv, 872 HostCmd_CMD_802_11_IBSS_COALESCING_STATUS, 873 HostCmd_ACT_GEN_GET, 0, NULL, false); 874 break; 875 case EVENT_IBSS_STA_CONNECT: 876 ether_addr_copy(ibss_sta_addr, adapter->event_body + 2); 877 mwifiex_dbg(adapter, EVENT, "event: IBSS_STA_CONNECT %pM\n", 878 ibss_sta_addr); 879 sta_ptr = mwifiex_add_sta_entry(priv, ibss_sta_addr); 880 if (sta_ptr && adapter->adhoc_11n_enabled) { 881 mwifiex_check_ibss_peer_capabilties(priv, sta_ptr, 882 adapter->event_skb); 883 if (sta_ptr->is_11n_enabled) 884 for (i = 0; i < MAX_NUM_TID; i++) 885 sta_ptr->ampdu_sta[i] = 886 priv->aggr_prio_tbl[i].ampdu_user; 887 else 888 for (i = 0; i < MAX_NUM_TID; i++) 889 sta_ptr->ampdu_sta[i] = 890 BA_STREAM_NOT_ALLOWED; 891 memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq)); 892 } 893 894 break; 895 case EVENT_IBSS_STA_DISCONNECT: 896 ether_addr_copy(ibss_sta_addr, adapter->event_body + 2); 897 mwifiex_dbg(adapter, EVENT, "event: IBSS_STA_DISCONNECT %pM\n", 898 ibss_sta_addr); 899 sta_ptr = mwifiex_get_sta_entry(priv, ibss_sta_addr); 900 if (sta_ptr && sta_ptr->is_11n_enabled) { 901 mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, 902 ibss_sta_addr); 903 mwifiex_del_tx_ba_stream_tbl_by_ra(priv, ibss_sta_addr); 904 } 905 mwifiex_wmm_del_peer_ra_list(priv, ibss_sta_addr); 906 mwifiex_del_sta_entry(priv, ibss_sta_addr); 907 break; 908 case EVENT_ADDBA: 909 mwifiex_dbg(adapter, EVENT, "event: ADDBA Request\n"); 910 mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP, 911 HostCmd_ACT_GEN_SET, 0, 912 adapter->event_body, false); 913 break; 914 case EVENT_DELBA: 915 mwifiex_dbg(adapter, EVENT, "event: DELBA Request\n"); 916 mwifiex_11n_delete_ba_stream(priv, adapter->event_body); 917 break; 918 case EVENT_BA_STREAM_TIEMOUT: 919 mwifiex_dbg(adapter, EVENT, "event: BA Stream timeout\n"); 920 mwifiex_11n_ba_stream_timeout(priv, 921 (struct host_cmd_ds_11n_batimeout 922 *) 923 adapter->event_body); 924 break; 925 case EVENT_AMSDU_AGGR_CTRL: 926 ctrl = le16_to_cpu(*(__le16 *)adapter->event_body); 927 mwifiex_dbg(adapter, EVENT, 928 "event: AMSDU_AGGR_CTRL %d\n", ctrl); 929 930 adapter->tx_buf_size = 931 min_t(u16, adapter->curr_tx_buf_size, ctrl); 932 mwifiex_dbg(adapter, EVENT, "event: tx_buf_size %d\n", 933 adapter->tx_buf_size); 934 break; 935 936 case EVENT_WEP_ICV_ERR: 937 mwifiex_dbg(adapter, EVENT, "event: WEP ICV error\n"); 938 break; 939 940 case EVENT_BW_CHANGE: 941 mwifiex_dbg(adapter, EVENT, "event: BW Change\n"); 942 break; 943 944 case EVENT_HOSTWAKE_STAIE: 945 mwifiex_dbg(adapter, EVENT, 946 "event: HOSTWAKE_STAIE %d\n", eventcause); 947 break; 948 949 case EVENT_REMAIN_ON_CHAN_EXPIRED: 950 mwifiex_dbg(adapter, EVENT, 951 "event: Remain on channel expired\n"); 952 cfg80211_remain_on_channel_expired(&priv->wdev, 953 priv->roc_cfg.cookie, 954 &priv->roc_cfg.chan, 955 GFP_ATOMIC); 956 957 memset(&priv->roc_cfg, 0x00, sizeof(struct mwifiex_roc_cfg)); 958 959 break; 960 961 case EVENT_CHANNEL_SWITCH_ANN: 962 mwifiex_dbg(adapter, EVENT, "event: Channel Switch Announcement\n"); 963 priv->csa_expire_time = 964 jiffies + msecs_to_jiffies(DFS_CHAN_MOVE_TIME); 965 priv->csa_chan = priv->curr_bss_params.bss_descriptor.channel; 966 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_DEAUTHENTICATE, 967 HostCmd_ACT_GEN_SET, 0, 968 priv->curr_bss_params.bss_descriptor.mac_address, 969 false); 970 break; 971 972 case EVENT_TDLS_GENERIC_EVENT: 973 ret = mwifiex_parse_tdls_event(priv, adapter->event_skb); 974 break; 975 976 case EVENT_TX_DATA_PAUSE: 977 mwifiex_dbg(adapter, EVENT, "event: TX DATA PAUSE\n"); 978 mwifiex_process_tx_pause_event(priv, adapter->event_skb); 979 break; 980 981 case EVENT_MULTI_CHAN_INFO: 982 mwifiex_dbg(adapter, EVENT, "event: multi-chan info\n"); 983 mwifiex_process_multi_chan_event(priv, adapter->event_skb); 984 break; 985 986 case EVENT_TX_STATUS_REPORT: 987 mwifiex_dbg(adapter, EVENT, "event: TX_STATUS Report\n"); 988 mwifiex_parse_tx_status_event(priv, adapter->event_body); 989 break; 990 991 case EVENT_CHANNEL_REPORT_RDY: 992 mwifiex_dbg(adapter, EVENT, "event: Channel Report\n"); 993 ret = mwifiex_11h_handle_chanrpt_ready(priv, 994 adapter->event_skb); 995 break; 996 case EVENT_RADAR_DETECTED: 997 mwifiex_dbg(adapter, EVENT, "event: Radar detected\n"); 998 ret = mwifiex_11h_handle_radar_detected(priv, 999 adapter->event_skb); 1000 break; 1001 case EVENT_BT_COEX_WLAN_PARA_CHANGE: 1002 dev_dbg(adapter->dev, "EVENT: BT coex wlan param update\n"); 1003 mwifiex_bt_coex_wlan_param_update_event(priv, 1004 adapter->event_skb); 1005 break; 1006 case EVENT_RXBA_SYNC: 1007 dev_dbg(adapter->dev, "EVENT: RXBA_SYNC\n"); 1008 mwifiex_11n_rxba_sync_event(priv, adapter->event_body, 1009 adapter->event_skb->len - 1010 sizeof(eventcause)); 1011 break; 1012 /* Debugging event; not used, but let's not print an ERROR for it. */ 1013 case EVENT_UNKNOWN_DEBUG: 1014 mwifiex_dbg(adapter, EVENT, "event: debug\n"); 1015 break; 1016 default: 1017 mwifiex_dbg(adapter, ERROR, "event: unknown event id: %#x\n", 1018 eventcause); 1019 break; 1020 } 1021 1022 return ret; 1023 } 1024