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 if (!ISSUPP_FIRMWARE_SUPPLICANT(priv->adapter->fw_cap_info)) 245 return; 246 247 mwifiex_send_cmd(priv, HostCmd_CMD_GTK_REKEY_OFFLOAD_CFG, 248 HostCmd_ACT_GEN_REMOVE, 0, NULL, false); 249 } 250 251 static int mwifiex_parse_tdls_event(struct mwifiex_private *priv, 252 struct sk_buff *event_skb) 253 { 254 int ret = 0; 255 struct mwifiex_adapter *adapter = priv->adapter; 256 struct mwifiex_sta_node *sta_ptr; 257 struct mwifiex_tdls_generic_event *tdls_evt = 258 (void *)event_skb->data + sizeof(adapter->event_cause); 259 u8 *mac = tdls_evt->peer_mac; 260 261 /* reserved 2 bytes are not mandatory in tdls event */ 262 if (event_skb->len < (sizeof(struct mwifiex_tdls_generic_event) - 263 sizeof(u16) - sizeof(adapter->event_cause))) { 264 mwifiex_dbg(adapter, ERROR, "Invalid event length!\n"); 265 return -1; 266 } 267 268 sta_ptr = mwifiex_get_sta_entry(priv, tdls_evt->peer_mac); 269 if (!sta_ptr) { 270 mwifiex_dbg(adapter, ERROR, "cannot get sta entry!\n"); 271 return -1; 272 } 273 274 switch (le16_to_cpu(tdls_evt->type)) { 275 case TDLS_EVENT_LINK_TEAR_DOWN: 276 cfg80211_tdls_oper_request(priv->netdev, 277 tdls_evt->peer_mac, 278 NL80211_TDLS_TEARDOWN, 279 le16_to_cpu(tdls_evt->u.reason_code), 280 GFP_KERNEL); 281 break; 282 case TDLS_EVENT_CHAN_SWITCH_RESULT: 283 mwifiex_dbg(adapter, EVENT, "tdls channel switch result :\n"); 284 mwifiex_dbg(adapter, EVENT, 285 "status=0x%x, reason=0x%x cur_chan=%d\n", 286 tdls_evt->u.switch_result.status, 287 tdls_evt->u.switch_result.reason, 288 tdls_evt->u.switch_result.cur_chan); 289 290 /* tdls channel switch failed */ 291 if (tdls_evt->u.switch_result.status != 0) { 292 switch (tdls_evt->u.switch_result.cur_chan) { 293 case TDLS_BASE_CHANNEL: 294 sta_ptr->tdls_status = TDLS_IN_BASE_CHAN; 295 break; 296 case TDLS_OFF_CHANNEL: 297 sta_ptr->tdls_status = TDLS_IN_OFF_CHAN; 298 break; 299 default: 300 break; 301 } 302 return ret; 303 } 304 305 /* tdls channel switch success */ 306 switch (tdls_evt->u.switch_result.cur_chan) { 307 case TDLS_BASE_CHANNEL: 308 if (sta_ptr->tdls_status == TDLS_IN_BASE_CHAN) 309 break; 310 mwifiex_update_ralist_tx_pause_in_tdls_cs(priv, mac, 311 false); 312 sta_ptr->tdls_status = TDLS_IN_BASE_CHAN; 313 break; 314 case TDLS_OFF_CHANNEL: 315 if (sta_ptr->tdls_status == TDLS_IN_OFF_CHAN) 316 break; 317 mwifiex_update_ralist_tx_pause_in_tdls_cs(priv, mac, 318 true); 319 sta_ptr->tdls_status = TDLS_IN_OFF_CHAN; 320 break; 321 default: 322 break; 323 } 324 325 break; 326 case TDLS_EVENT_START_CHAN_SWITCH: 327 mwifiex_dbg(adapter, EVENT, "tdls start channel switch...\n"); 328 sta_ptr->tdls_status = TDLS_CHAN_SWITCHING; 329 break; 330 case TDLS_EVENT_CHAN_SWITCH_STOPPED: 331 mwifiex_dbg(adapter, EVENT, 332 "tdls chan switch stopped, reason=%d\n", 333 tdls_evt->u.cs_stop_reason); 334 break; 335 default: 336 break; 337 } 338 339 return ret; 340 } 341 342 static void mwifiex_process_uap_tx_pause(struct mwifiex_private *priv, 343 struct mwifiex_ie_types_header *tlv) 344 { 345 struct mwifiex_tx_pause_tlv *tp; 346 struct mwifiex_sta_node *sta_ptr; 347 unsigned long flags; 348 349 tp = (void *)tlv; 350 mwifiex_dbg(priv->adapter, EVENT, 351 "uap tx_pause: %pM pause=%d, pkts=%d\n", 352 tp->peermac, tp->tx_pause, 353 tp->pkt_cnt); 354 355 if (ether_addr_equal(tp->peermac, priv->netdev->dev_addr)) { 356 if (tp->tx_pause) 357 priv->port_open = false; 358 else 359 priv->port_open = true; 360 } else if (is_multicast_ether_addr(tp->peermac)) { 361 mwifiex_update_ralist_tx_pause(priv, tp->peermac, tp->tx_pause); 362 } else { 363 spin_lock_irqsave(&priv->sta_list_spinlock, flags); 364 sta_ptr = mwifiex_get_sta_entry(priv, tp->peermac); 365 if (sta_ptr && sta_ptr->tx_pause != tp->tx_pause) { 366 sta_ptr->tx_pause = tp->tx_pause; 367 mwifiex_update_ralist_tx_pause(priv, tp->peermac, 368 tp->tx_pause); 369 } 370 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); 371 } 372 } 373 374 static void mwifiex_process_sta_tx_pause(struct mwifiex_private *priv, 375 struct mwifiex_ie_types_header *tlv) 376 { 377 struct mwifiex_tx_pause_tlv *tp; 378 struct mwifiex_sta_node *sta_ptr; 379 int status; 380 unsigned long flags; 381 382 tp = (void *)tlv; 383 mwifiex_dbg(priv->adapter, EVENT, 384 "sta tx_pause: %pM pause=%d, pkts=%d\n", 385 tp->peermac, tp->tx_pause, 386 tp->pkt_cnt); 387 388 if (ether_addr_equal(tp->peermac, priv->cfg_bssid)) { 389 if (tp->tx_pause) 390 priv->port_open = false; 391 else 392 priv->port_open = true; 393 } else { 394 if (!ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) 395 return; 396 397 status = mwifiex_get_tdls_link_status(priv, tp->peermac); 398 if (mwifiex_is_tdls_link_setup(status)) { 399 spin_lock_irqsave(&priv->sta_list_spinlock, flags); 400 sta_ptr = mwifiex_get_sta_entry(priv, tp->peermac); 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 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); 408 } 409 } 410 } 411 412 void mwifiex_process_multi_chan_event(struct mwifiex_private *priv, 413 struct sk_buff *event_skb) 414 { 415 struct mwifiex_ie_types_multi_chan_info *chan_info; 416 struct mwifiex_ie_types_mc_group_info *grp_info; 417 struct mwifiex_adapter *adapter = priv->adapter; 418 struct mwifiex_ie_types_header *tlv; 419 u16 tlv_buf_left, tlv_type, tlv_len; 420 int intf_num, bss_type, bss_num, i; 421 struct mwifiex_private *intf_priv; 422 423 tlv_buf_left = event_skb->len - sizeof(u32); 424 chan_info = (void *)event_skb->data + sizeof(u32); 425 426 if (le16_to_cpu(chan_info->header.type) != TLV_TYPE_MULTI_CHAN_INFO || 427 tlv_buf_left < sizeof(struct mwifiex_ie_types_multi_chan_info)) { 428 mwifiex_dbg(adapter, ERROR, 429 "unknown TLV in chan_info event\n"); 430 return; 431 } 432 433 adapter->usb_mc_status = le16_to_cpu(chan_info->status); 434 mwifiex_dbg(adapter, EVENT, "multi chan operation %s\n", 435 adapter->usb_mc_status ? "started" : "over"); 436 437 tlv_buf_left -= sizeof(struct mwifiex_ie_types_multi_chan_info); 438 tlv = (struct mwifiex_ie_types_header *)chan_info->tlv_buffer; 439 440 while (tlv_buf_left >= (int)sizeof(struct mwifiex_ie_types_header)) { 441 tlv_type = le16_to_cpu(tlv->type); 442 tlv_len = le16_to_cpu(tlv->len); 443 if ((sizeof(struct mwifiex_ie_types_header) + tlv_len) > 444 tlv_buf_left) { 445 mwifiex_dbg(adapter, ERROR, "wrong tlv: tlvLen=%d,\t" 446 "tlvBufLeft=%d\n", tlv_len, tlv_buf_left); 447 break; 448 } 449 if (tlv_type != TLV_TYPE_MC_GROUP_INFO) { 450 mwifiex_dbg(adapter, ERROR, "wrong tlv type: 0x%x\n", 451 tlv_type); 452 break; 453 } 454 455 grp_info = (struct mwifiex_ie_types_mc_group_info *)tlv; 456 intf_num = grp_info->intf_num; 457 for (i = 0; i < intf_num; i++) { 458 bss_type = grp_info->bss_type_numlist[i] >> 4; 459 bss_num = grp_info->bss_type_numlist[i] & BSS_NUM_MASK; 460 intf_priv = mwifiex_get_priv_by_id(adapter, bss_num, 461 bss_type); 462 if (!intf_priv) { 463 mwifiex_dbg(adapter, ERROR, 464 "Invalid bss_type bss_num\t" 465 "in multi channel event\n"); 466 continue; 467 } 468 if (adapter->iface_type == MWIFIEX_USB) { 469 u8 ep; 470 471 ep = grp_info->hid_num.usb_ep_num; 472 if (ep == MWIFIEX_USB_EP_DATA || 473 ep == MWIFIEX_USB_EP_DATA_CH2) 474 intf_priv->usb_port = ep; 475 } 476 } 477 478 tlv_buf_left -= sizeof(struct mwifiex_ie_types_header) + 479 tlv_len; 480 tlv = (void *)((u8 *)tlv + tlv_len + 481 sizeof(struct mwifiex_ie_types_header)); 482 } 483 484 if (adapter->iface_type == MWIFIEX_USB) { 485 adapter->tx_lock_flag = true; 486 adapter->usb_mc_setup = true; 487 mwifiex_multi_chan_resync(adapter); 488 } 489 } 490 491 void mwifiex_process_tx_pause_event(struct mwifiex_private *priv, 492 struct sk_buff *event_skb) 493 { 494 struct mwifiex_ie_types_header *tlv; 495 u16 tlv_type, tlv_len; 496 int tlv_buf_left; 497 498 if (!priv->media_connected) { 499 mwifiex_dbg(priv->adapter, ERROR, 500 "tx_pause event while disconnected; bss_role=%d\n", 501 priv->bss_role); 502 return; 503 } 504 505 tlv_buf_left = event_skb->len - sizeof(u32); 506 tlv = (void *)event_skb->data + sizeof(u32); 507 508 while (tlv_buf_left >= (int)sizeof(struct mwifiex_ie_types_header)) { 509 tlv_type = le16_to_cpu(tlv->type); 510 tlv_len = le16_to_cpu(tlv->len); 511 if ((sizeof(struct mwifiex_ie_types_header) + tlv_len) > 512 tlv_buf_left) { 513 mwifiex_dbg(priv->adapter, ERROR, 514 "wrong tlv: tlvLen=%d, tlvBufLeft=%d\n", 515 tlv_len, tlv_buf_left); 516 break; 517 } 518 if (tlv_type == TLV_TYPE_TX_PAUSE) { 519 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) 520 mwifiex_process_sta_tx_pause(priv, tlv); 521 else 522 mwifiex_process_uap_tx_pause(priv, tlv); 523 } 524 525 tlv_buf_left -= sizeof(struct mwifiex_ie_types_header) + 526 tlv_len; 527 tlv = (void *)((u8 *)tlv + tlv_len + 528 sizeof(struct mwifiex_ie_types_header)); 529 } 530 531 } 532 533 /* 534 * This function handles coex events generated by firmware 535 */ 536 void mwifiex_bt_coex_wlan_param_update_event(struct mwifiex_private *priv, 537 struct sk_buff *event_skb) 538 { 539 struct mwifiex_adapter *adapter = priv->adapter; 540 struct mwifiex_ie_types_header *tlv; 541 struct mwifiex_ie_types_btcoex_aggr_win_size *winsizetlv; 542 struct mwifiex_ie_types_btcoex_scan_time *scantlv; 543 s32 len = event_skb->len - sizeof(u32); 544 u8 *cur_ptr = event_skb->data + sizeof(u32); 545 u16 tlv_type, tlv_len; 546 547 while (len >= sizeof(struct mwifiex_ie_types_header)) { 548 tlv = (struct mwifiex_ie_types_header *)cur_ptr; 549 tlv_len = le16_to_cpu(tlv->len); 550 tlv_type = le16_to_cpu(tlv->type); 551 552 if ((tlv_len + sizeof(struct mwifiex_ie_types_header)) > len) 553 break; 554 switch (tlv_type) { 555 case TLV_BTCOEX_WL_AGGR_WINSIZE: 556 winsizetlv = 557 (struct mwifiex_ie_types_btcoex_aggr_win_size *)tlv; 558 adapter->coex_win_size = winsizetlv->coex_win_size; 559 adapter->coex_tx_win_size = 560 winsizetlv->tx_win_size; 561 adapter->coex_rx_win_size = 562 winsizetlv->rx_win_size; 563 mwifiex_coex_ampdu_rxwinsize(adapter); 564 mwifiex_update_ampdu_txwinsize(adapter); 565 break; 566 567 case TLV_BTCOEX_WL_SCANTIME: 568 scantlv = 569 (struct mwifiex_ie_types_btcoex_scan_time *)tlv; 570 adapter->coex_scan = scantlv->coex_scan; 571 adapter->coex_min_scan_time = le16_to_cpu(scantlv->min_scan_time); 572 adapter->coex_max_scan_time = le16_to_cpu(scantlv->max_scan_time); 573 break; 574 575 default: 576 break; 577 } 578 579 len -= tlv_len + sizeof(struct mwifiex_ie_types_header); 580 cur_ptr += tlv_len + 581 sizeof(struct mwifiex_ie_types_header); 582 } 583 584 dev_dbg(adapter->dev, "coex_scan=%d min_scan=%d coex_win=%d, tx_win=%d rx_win=%d\n", 585 adapter->coex_scan, adapter->coex_min_scan_time, 586 adapter->coex_win_size, adapter->coex_tx_win_size, 587 adapter->coex_rx_win_size); 588 } 589 590 static void 591 mwifiex_fw_dump_info_event(struct mwifiex_private *priv, 592 struct sk_buff *event_skb) 593 { 594 struct mwifiex_adapter *adapter = priv->adapter; 595 struct mwifiex_fw_dump_header *fw_dump_hdr = 596 (void *)adapter->event_body; 597 598 if (adapter->iface_type != MWIFIEX_USB) { 599 mwifiex_dbg(adapter, MSG, 600 "event is not on usb interface, ignore it\n"); 601 return; 602 } 603 604 if (!adapter->devdump_data) { 605 /* When receive the first event, allocate device dump 606 * buffer, dump driver info. 607 */ 608 adapter->devdump_data = vzalloc(MWIFIEX_FW_DUMP_SIZE); 609 if (!adapter->devdump_data) { 610 mwifiex_dbg(adapter, ERROR, 611 "vzalloc devdump data failure!\n"); 612 return; 613 } 614 615 mwifiex_drv_info_dump(adapter); 616 617 /* If no proceeded event arrive in 10s, upload device 618 * dump data, this will be useful if the end of 619 * transmission event get lost, in this cornel case, 620 * user would still get partial of the dump. 621 */ 622 mod_timer(&adapter->devdump_timer, 623 jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S)); 624 } 625 626 /* Overflow check */ 627 if (adapter->devdump_len + event_skb->len >= MWIFIEX_FW_DUMP_SIZE) 628 goto upload_dump; 629 630 memmove(adapter->devdump_data + adapter->devdump_len, 631 adapter->event_skb->data, event_skb->len); 632 adapter->devdump_len += event_skb->len; 633 634 if (le16_to_cpu(fw_dump_hdr->type == FW_DUMP_INFO_ENDED)) { 635 mwifiex_dbg(adapter, MSG, 636 "receive end of transmission flag event!\n"); 637 goto upload_dump; 638 } 639 return; 640 641 upload_dump: 642 del_timer_sync(&adapter->devdump_timer); 643 mwifiex_upload_device_dump(adapter); 644 } 645 646 /* 647 * This function handles events generated by firmware. 648 * 649 * This is a generic function and handles all events. 650 * 651 * Event specific routines are called by this function based 652 * upon the generated event cause. 653 * 654 * For the following events, the function just forwards them to upper 655 * layers, optionally recording the change - 656 * - EVENT_LINK_SENSED 657 * - EVENT_MIC_ERR_UNICAST 658 * - EVENT_MIC_ERR_MULTICAST 659 * - EVENT_PORT_RELEASE 660 * - EVENT_RSSI_LOW 661 * - EVENT_SNR_LOW 662 * - EVENT_MAX_FAIL 663 * - EVENT_RSSI_HIGH 664 * - EVENT_SNR_HIGH 665 * - EVENT_DATA_RSSI_LOW 666 * - EVENT_DATA_SNR_LOW 667 * - EVENT_DATA_RSSI_HIGH 668 * - EVENT_DATA_SNR_HIGH 669 * - EVENT_LINK_QUALITY 670 * - EVENT_PRE_BEACON_LOST 671 * - EVENT_IBSS_COALESCED 672 * - EVENT_IBSS_STA_CONNECT 673 * - EVENT_IBSS_STA_DISCONNECT 674 * - EVENT_WEP_ICV_ERR 675 * - EVENT_BW_CHANGE 676 * - EVENT_HOSTWAKE_STAIE 677 * 678 * For the following events, no action is taken - 679 * - EVENT_MIB_CHANGED 680 * - EVENT_INIT_DONE 681 * - EVENT_DUMMY_HOST_WAKEUP_SIGNAL 682 * 683 * Rest of the supported events requires driver handling - 684 * - EVENT_DEAUTHENTICATED 685 * - EVENT_DISASSOCIATED 686 * - EVENT_LINK_LOST 687 * - EVENT_PS_SLEEP 688 * - EVENT_PS_AWAKE 689 * - EVENT_DEEP_SLEEP_AWAKE 690 * - EVENT_HS_ACT_REQ 691 * - EVENT_ADHOC_BCN_LOST 692 * - EVENT_BG_SCAN_REPORT 693 * - EVENT_WMM_STATUS_CHANGE 694 * - EVENT_ADDBA 695 * - EVENT_DELBA 696 * - EVENT_BA_STREAM_TIEMOUT 697 * - EVENT_AMSDU_AGGR_CTRL 698 * - EVENT_FW_DUMP_INFO 699 */ 700 int mwifiex_process_sta_event(struct mwifiex_private *priv) 701 { 702 struct mwifiex_adapter *adapter = priv->adapter; 703 int ret = 0, i; 704 u32 eventcause = adapter->event_cause; 705 u16 ctrl, reason_code; 706 u8 ibss_sta_addr[ETH_ALEN]; 707 struct mwifiex_sta_node *sta_ptr; 708 709 switch (eventcause) { 710 case EVENT_DUMMY_HOST_WAKEUP_SIGNAL: 711 mwifiex_dbg(adapter, ERROR, 712 "invalid EVENT: DUMMY_HOST_WAKEUP_SIGNAL, ignore it\n"); 713 break; 714 case EVENT_LINK_SENSED: 715 mwifiex_dbg(adapter, EVENT, "event: LINK_SENSED\n"); 716 if (!netif_carrier_ok(priv->netdev)) 717 netif_carrier_on(priv->netdev); 718 mwifiex_wake_up_net_dev_queue(priv->netdev, adapter); 719 break; 720 721 case EVENT_DEAUTHENTICATED: 722 mwifiex_dbg(adapter, EVENT, "event: Deauthenticated\n"); 723 if (priv->wps.session_enable) { 724 mwifiex_dbg(adapter, INFO, 725 "info: receive deauth event in wps session\n"); 726 break; 727 } 728 adapter->dbg.num_event_deauth++; 729 if (priv->media_connected) { 730 reason_code = 731 get_unaligned_le16(adapter->event_body); 732 mwifiex_reset_connect_state(priv, reason_code, true); 733 } 734 break; 735 736 case EVENT_DISASSOCIATED: 737 mwifiex_dbg(adapter, EVENT, "event: Disassociated\n"); 738 if (priv->wps.session_enable) { 739 mwifiex_dbg(adapter, INFO, 740 "info: receive disassoc event in wps session\n"); 741 break; 742 } 743 adapter->dbg.num_event_disassoc++; 744 if (priv->media_connected) { 745 reason_code = 746 get_unaligned_le16(adapter->event_body); 747 mwifiex_reset_connect_state(priv, reason_code, true); 748 } 749 break; 750 751 case EVENT_LINK_LOST: 752 mwifiex_dbg(adapter, EVENT, "event: Link lost\n"); 753 adapter->dbg.num_event_link_lost++; 754 if (priv->media_connected) { 755 reason_code = 756 get_unaligned_le16(adapter->event_body); 757 mwifiex_reset_connect_state(priv, reason_code, true); 758 } 759 break; 760 761 case EVENT_PS_SLEEP: 762 mwifiex_dbg(adapter, EVENT, "info: EVENT: SLEEP\n"); 763 764 adapter->ps_state = PS_STATE_PRE_SLEEP; 765 766 mwifiex_check_ps_cond(adapter); 767 break; 768 769 case EVENT_PS_AWAKE: 770 mwifiex_dbg(adapter, EVENT, "info: EVENT: AWAKE\n"); 771 if (!adapter->pps_uapsd_mode && 772 (priv->port_open || 773 (priv->bss_mode == NL80211_IFTYPE_ADHOC)) && 774 priv->media_connected && adapter->sleep_period.period) { 775 adapter->pps_uapsd_mode = true; 776 mwifiex_dbg(adapter, EVENT, 777 "event: PPS/UAPSD mode activated\n"); 778 } 779 adapter->tx_lock_flag = false; 780 if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) { 781 if (mwifiex_check_last_packet_indication(priv)) { 782 if (adapter->data_sent || 783 (adapter->if_ops.is_port_ready && 784 !adapter->if_ops.is_port_ready(priv))) { 785 adapter->ps_state = PS_STATE_AWAKE; 786 adapter->pm_wakeup_card_req = false; 787 adapter->pm_wakeup_fw_try = false; 788 del_timer(&adapter->wakeup_timer); 789 break; 790 } 791 if (!mwifiex_send_null_packet 792 (priv, 793 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET | 794 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) 795 adapter->ps_state = 796 PS_STATE_SLEEP; 797 return 0; 798 } 799 } 800 adapter->ps_state = PS_STATE_AWAKE; 801 adapter->pm_wakeup_card_req = false; 802 adapter->pm_wakeup_fw_try = false; 803 del_timer(&adapter->wakeup_timer); 804 805 break; 806 807 case EVENT_DEEP_SLEEP_AWAKE: 808 adapter->if_ops.wakeup_complete(adapter); 809 mwifiex_dbg(adapter, EVENT, "event: DS_AWAKE\n"); 810 if (adapter->is_deep_sleep) 811 adapter->is_deep_sleep = false; 812 break; 813 814 case EVENT_HS_ACT_REQ: 815 mwifiex_dbg(adapter, EVENT, "event: HS_ACT_REQ\n"); 816 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_HS_CFG_ENH, 817 0, 0, NULL, false); 818 break; 819 820 case EVENT_MIC_ERR_UNICAST: 821 mwifiex_dbg(adapter, EVENT, "event: UNICAST MIC ERROR\n"); 822 cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid, 823 NL80211_KEYTYPE_PAIRWISE, 824 -1, NULL, GFP_KERNEL); 825 break; 826 827 case EVENT_MIC_ERR_MULTICAST: 828 mwifiex_dbg(adapter, EVENT, "event: MULTICAST MIC ERROR\n"); 829 cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid, 830 NL80211_KEYTYPE_GROUP, 831 -1, NULL, GFP_KERNEL); 832 break; 833 case EVENT_MIB_CHANGED: 834 case EVENT_INIT_DONE: 835 break; 836 837 case EVENT_ADHOC_BCN_LOST: 838 mwifiex_dbg(adapter, EVENT, "event: ADHOC_BCN_LOST\n"); 839 priv->adhoc_is_link_sensed = false; 840 mwifiex_clean_txrx(priv); 841 mwifiex_stop_net_dev_queue(priv->netdev, adapter); 842 if (netif_carrier_ok(priv->netdev)) 843 netif_carrier_off(priv->netdev); 844 break; 845 846 case EVENT_BG_SCAN_REPORT: 847 mwifiex_dbg(adapter, EVENT, "event: BGS_REPORT\n"); 848 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_BG_SCAN_QUERY, 849 HostCmd_ACT_GEN_GET, 0, NULL, false); 850 break; 851 852 case EVENT_BG_SCAN_STOPPED: 853 dev_dbg(adapter->dev, "event: BGS_STOPPED\n"); 854 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0); 855 if (priv->sched_scanning) 856 priv->sched_scanning = false; 857 break; 858 859 case EVENT_PORT_RELEASE: 860 mwifiex_dbg(adapter, EVENT, "event: PORT RELEASE\n"); 861 priv->port_open = true; 862 break; 863 864 case EVENT_EXT_SCAN_REPORT: 865 mwifiex_dbg(adapter, EVENT, "event: EXT_SCAN Report\n"); 866 /* We intend to skip this event during suspend, but handle 867 * it in interface disabled case 868 */ 869 if (adapter->ext_scan && (!priv->scan_aborting || 870 !netif_running(priv->netdev))) 871 ret = mwifiex_handle_event_ext_scan_report(priv, 872 adapter->event_skb->data); 873 874 break; 875 876 case EVENT_WMM_STATUS_CHANGE: 877 mwifiex_dbg(adapter, EVENT, "event: WMM status changed\n"); 878 ret = mwifiex_send_cmd(priv, HostCmd_CMD_WMM_GET_STATUS, 879 0, 0, NULL, false); 880 break; 881 882 case EVENT_RSSI_LOW: 883 cfg80211_cqm_rssi_notify(priv->netdev, 884 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, 885 0, GFP_KERNEL); 886 mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO, 887 HostCmd_ACT_GEN_GET, 0, NULL, false); 888 priv->subsc_evt_rssi_state = RSSI_LOW_RECVD; 889 mwifiex_dbg(adapter, EVENT, "event: Beacon RSSI_LOW\n"); 890 break; 891 case EVENT_SNR_LOW: 892 mwifiex_dbg(adapter, EVENT, "event: Beacon SNR_LOW\n"); 893 break; 894 case EVENT_MAX_FAIL: 895 mwifiex_dbg(adapter, EVENT, "event: MAX_FAIL\n"); 896 break; 897 case EVENT_RSSI_HIGH: 898 cfg80211_cqm_rssi_notify(priv->netdev, 899 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, 900 0, GFP_KERNEL); 901 mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO, 902 HostCmd_ACT_GEN_GET, 0, NULL, false); 903 priv->subsc_evt_rssi_state = RSSI_HIGH_RECVD; 904 mwifiex_dbg(adapter, EVENT, "event: Beacon RSSI_HIGH\n"); 905 break; 906 case EVENT_SNR_HIGH: 907 mwifiex_dbg(adapter, EVENT, "event: Beacon SNR_HIGH\n"); 908 break; 909 case EVENT_DATA_RSSI_LOW: 910 mwifiex_dbg(adapter, EVENT, "event: Data RSSI_LOW\n"); 911 break; 912 case EVENT_DATA_SNR_LOW: 913 mwifiex_dbg(adapter, EVENT, "event: Data SNR_LOW\n"); 914 break; 915 case EVENT_DATA_RSSI_HIGH: 916 mwifiex_dbg(adapter, EVENT, "event: Data RSSI_HIGH\n"); 917 break; 918 case EVENT_DATA_SNR_HIGH: 919 mwifiex_dbg(adapter, EVENT, "event: Data SNR_HIGH\n"); 920 break; 921 case EVENT_LINK_QUALITY: 922 mwifiex_dbg(adapter, EVENT, "event: Link Quality\n"); 923 break; 924 case EVENT_PRE_BEACON_LOST: 925 mwifiex_dbg(adapter, EVENT, "event: Pre-Beacon Lost\n"); 926 break; 927 case EVENT_IBSS_COALESCED: 928 mwifiex_dbg(adapter, EVENT, "event: IBSS_COALESCED\n"); 929 ret = mwifiex_send_cmd(priv, 930 HostCmd_CMD_802_11_IBSS_COALESCING_STATUS, 931 HostCmd_ACT_GEN_GET, 0, NULL, false); 932 break; 933 case EVENT_IBSS_STA_CONNECT: 934 ether_addr_copy(ibss_sta_addr, adapter->event_body + 2); 935 mwifiex_dbg(adapter, EVENT, "event: IBSS_STA_CONNECT %pM\n", 936 ibss_sta_addr); 937 sta_ptr = mwifiex_add_sta_entry(priv, ibss_sta_addr); 938 if (sta_ptr && adapter->adhoc_11n_enabled) { 939 mwifiex_check_ibss_peer_capabilties(priv, sta_ptr, 940 adapter->event_skb); 941 if (sta_ptr->is_11n_enabled) 942 for (i = 0; i < MAX_NUM_TID; i++) 943 sta_ptr->ampdu_sta[i] = 944 priv->aggr_prio_tbl[i].ampdu_user; 945 else 946 for (i = 0; i < MAX_NUM_TID; i++) 947 sta_ptr->ampdu_sta[i] = 948 BA_STREAM_NOT_ALLOWED; 949 memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq)); 950 } 951 952 break; 953 case EVENT_IBSS_STA_DISCONNECT: 954 ether_addr_copy(ibss_sta_addr, adapter->event_body + 2); 955 mwifiex_dbg(adapter, EVENT, "event: IBSS_STA_DISCONNECT %pM\n", 956 ibss_sta_addr); 957 sta_ptr = mwifiex_get_sta_entry(priv, ibss_sta_addr); 958 if (sta_ptr && sta_ptr->is_11n_enabled) { 959 mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, 960 ibss_sta_addr); 961 mwifiex_del_tx_ba_stream_tbl_by_ra(priv, ibss_sta_addr); 962 } 963 mwifiex_wmm_del_peer_ra_list(priv, ibss_sta_addr); 964 mwifiex_del_sta_entry(priv, ibss_sta_addr); 965 break; 966 case EVENT_ADDBA: 967 mwifiex_dbg(adapter, EVENT, "event: ADDBA Request\n"); 968 mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP, 969 HostCmd_ACT_GEN_SET, 0, 970 adapter->event_body, false); 971 break; 972 case EVENT_DELBA: 973 mwifiex_dbg(adapter, EVENT, "event: DELBA Request\n"); 974 mwifiex_11n_delete_ba_stream(priv, adapter->event_body); 975 break; 976 case EVENT_BA_STREAM_TIEMOUT: 977 mwifiex_dbg(adapter, EVENT, "event: BA Stream timeout\n"); 978 mwifiex_11n_ba_stream_timeout(priv, 979 (struct host_cmd_ds_11n_batimeout 980 *) 981 adapter->event_body); 982 break; 983 case EVENT_AMSDU_AGGR_CTRL: 984 ctrl = get_unaligned_le16(adapter->event_body); 985 mwifiex_dbg(adapter, EVENT, 986 "event: AMSDU_AGGR_CTRL %d\n", ctrl); 987 988 adapter->tx_buf_size = 989 min_t(u16, adapter->curr_tx_buf_size, ctrl); 990 mwifiex_dbg(adapter, EVENT, "event: tx_buf_size %d\n", 991 adapter->tx_buf_size); 992 break; 993 994 case EVENT_WEP_ICV_ERR: 995 mwifiex_dbg(adapter, EVENT, "event: WEP ICV error\n"); 996 break; 997 998 case EVENT_BW_CHANGE: 999 mwifiex_dbg(adapter, EVENT, "event: BW Change\n"); 1000 break; 1001 1002 case EVENT_HOSTWAKE_STAIE: 1003 mwifiex_dbg(adapter, EVENT, 1004 "event: HOSTWAKE_STAIE %d\n", eventcause); 1005 break; 1006 1007 case EVENT_REMAIN_ON_CHAN_EXPIRED: 1008 mwifiex_dbg(adapter, EVENT, 1009 "event: Remain on channel expired\n"); 1010 cfg80211_remain_on_channel_expired(&priv->wdev, 1011 priv->roc_cfg.cookie, 1012 &priv->roc_cfg.chan, 1013 GFP_ATOMIC); 1014 1015 memset(&priv->roc_cfg, 0x00, sizeof(struct mwifiex_roc_cfg)); 1016 1017 break; 1018 1019 case EVENT_CHANNEL_SWITCH_ANN: 1020 mwifiex_dbg(adapter, EVENT, "event: Channel Switch Announcement\n"); 1021 priv->csa_expire_time = 1022 jiffies + msecs_to_jiffies(DFS_CHAN_MOVE_TIME); 1023 priv->csa_chan = priv->curr_bss_params.bss_descriptor.channel; 1024 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_DEAUTHENTICATE, 1025 HostCmd_ACT_GEN_SET, 0, 1026 priv->curr_bss_params.bss_descriptor.mac_address, 1027 false); 1028 break; 1029 1030 case EVENT_TDLS_GENERIC_EVENT: 1031 ret = mwifiex_parse_tdls_event(priv, adapter->event_skb); 1032 break; 1033 1034 case EVENT_TX_DATA_PAUSE: 1035 mwifiex_dbg(adapter, EVENT, "event: TX DATA PAUSE\n"); 1036 mwifiex_process_tx_pause_event(priv, adapter->event_skb); 1037 break; 1038 1039 case EVENT_MULTI_CHAN_INFO: 1040 mwifiex_dbg(adapter, EVENT, "event: multi-chan info\n"); 1041 mwifiex_process_multi_chan_event(priv, adapter->event_skb); 1042 break; 1043 1044 case EVENT_TX_STATUS_REPORT: 1045 mwifiex_dbg(adapter, EVENT, "event: TX_STATUS Report\n"); 1046 mwifiex_parse_tx_status_event(priv, adapter->event_body); 1047 break; 1048 1049 case EVENT_CHANNEL_REPORT_RDY: 1050 mwifiex_dbg(adapter, EVENT, "event: Channel Report\n"); 1051 ret = mwifiex_11h_handle_chanrpt_ready(priv, 1052 adapter->event_skb); 1053 break; 1054 case EVENT_RADAR_DETECTED: 1055 mwifiex_dbg(adapter, EVENT, "event: Radar detected\n"); 1056 ret = mwifiex_11h_handle_radar_detected(priv, 1057 adapter->event_skb); 1058 break; 1059 case EVENT_BT_COEX_WLAN_PARA_CHANGE: 1060 dev_dbg(adapter->dev, "EVENT: BT coex wlan param update\n"); 1061 mwifiex_bt_coex_wlan_param_update_event(priv, 1062 adapter->event_skb); 1063 break; 1064 case EVENT_RXBA_SYNC: 1065 dev_dbg(adapter->dev, "EVENT: RXBA_SYNC\n"); 1066 mwifiex_11n_rxba_sync_event(priv, adapter->event_body, 1067 adapter->event_skb->len - 1068 sizeof(eventcause)); 1069 break; 1070 case EVENT_FW_DUMP_INFO: 1071 mwifiex_dbg(adapter, EVENT, "event: firmware debug info\n"); 1072 mwifiex_fw_dump_info_event(priv, adapter->event_skb); 1073 break; 1074 /* Debugging event; not used, but let's not print an ERROR for it. */ 1075 case EVENT_UNKNOWN_DEBUG: 1076 mwifiex_dbg(adapter, EVENT, "event: debug\n"); 1077 break; 1078 default: 1079 mwifiex_dbg(adapter, ERROR, "event: unknown event id: %#x\n", 1080 eventcause); 1081 break; 1082 } 1083 1084 return ret; 1085 } 1086