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_capabilities(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 capabilities:", 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 (test_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags) && 228 adapter->curr_cmd) 229 return; 230 priv->media_connected = false; 231 mwifiex_dbg(adapter, MSG, 232 "info: successfully disconnected from %pM: reason code %d\n", 233 priv->cfg_bssid, reason_code); 234 if (priv->bss_mode == NL80211_IFTYPE_STATION || 235 priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) { 236 cfg80211_disconnected(priv->netdev, reason_code, NULL, 0, 237 !from_ap, GFP_KERNEL); 238 } 239 eth_zero_addr(priv->cfg_bssid); 240 241 mwifiex_stop_net_dev_queue(priv->netdev, adapter); 242 if (netif_carrier_ok(priv->netdev)) 243 netif_carrier_off(priv->netdev); 244 245 if (!ISSUPP_FIRMWARE_SUPPLICANT(priv->adapter->fw_cap_info)) 246 return; 247 248 mwifiex_send_cmd(priv, HostCmd_CMD_GTK_REKEY_OFFLOAD_CFG, 249 HostCmd_ACT_GEN_REMOVE, 0, NULL, false); 250 } 251 252 static int mwifiex_parse_tdls_event(struct mwifiex_private *priv, 253 struct sk_buff *event_skb) 254 { 255 int ret = 0; 256 struct mwifiex_adapter *adapter = priv->adapter; 257 struct mwifiex_sta_node *sta_ptr; 258 struct mwifiex_tdls_generic_event *tdls_evt = 259 (void *)event_skb->data + sizeof(adapter->event_cause); 260 u8 *mac = tdls_evt->peer_mac; 261 262 /* reserved 2 bytes are not mandatory in tdls event */ 263 if (event_skb->len < (sizeof(struct mwifiex_tdls_generic_event) - 264 sizeof(u16) - sizeof(adapter->event_cause))) { 265 mwifiex_dbg(adapter, ERROR, "Invalid event length!\n"); 266 return -1; 267 } 268 269 sta_ptr = mwifiex_get_sta_entry(priv, tdls_evt->peer_mac); 270 if (!sta_ptr) { 271 mwifiex_dbg(adapter, ERROR, "cannot get sta entry!\n"); 272 return -1; 273 } 274 275 switch (le16_to_cpu(tdls_evt->type)) { 276 case TDLS_EVENT_LINK_TEAR_DOWN: 277 cfg80211_tdls_oper_request(priv->netdev, 278 tdls_evt->peer_mac, 279 NL80211_TDLS_TEARDOWN, 280 le16_to_cpu(tdls_evt->u.reason_code), 281 GFP_KERNEL); 282 break; 283 case TDLS_EVENT_CHAN_SWITCH_RESULT: 284 mwifiex_dbg(adapter, EVENT, "tdls channel switch result :\n"); 285 mwifiex_dbg(adapter, EVENT, 286 "status=0x%x, reason=0x%x cur_chan=%d\n", 287 tdls_evt->u.switch_result.status, 288 tdls_evt->u.switch_result.reason, 289 tdls_evt->u.switch_result.cur_chan); 290 291 /* tdls channel switch failed */ 292 if (tdls_evt->u.switch_result.status != 0) { 293 switch (tdls_evt->u.switch_result.cur_chan) { 294 case TDLS_BASE_CHANNEL: 295 sta_ptr->tdls_status = TDLS_IN_BASE_CHAN; 296 break; 297 case TDLS_OFF_CHANNEL: 298 sta_ptr->tdls_status = TDLS_IN_OFF_CHAN; 299 break; 300 default: 301 break; 302 } 303 return ret; 304 } 305 306 /* tdls channel switch success */ 307 switch (tdls_evt->u.switch_result.cur_chan) { 308 case TDLS_BASE_CHANNEL: 309 if (sta_ptr->tdls_status == TDLS_IN_BASE_CHAN) 310 break; 311 mwifiex_update_ralist_tx_pause_in_tdls_cs(priv, mac, 312 false); 313 sta_ptr->tdls_status = TDLS_IN_BASE_CHAN; 314 break; 315 case TDLS_OFF_CHANNEL: 316 if (sta_ptr->tdls_status == TDLS_IN_OFF_CHAN) 317 break; 318 mwifiex_update_ralist_tx_pause_in_tdls_cs(priv, mac, 319 true); 320 sta_ptr->tdls_status = TDLS_IN_OFF_CHAN; 321 break; 322 default: 323 break; 324 } 325 326 break; 327 case TDLS_EVENT_START_CHAN_SWITCH: 328 mwifiex_dbg(adapter, EVENT, "tdls start channel switch...\n"); 329 sta_ptr->tdls_status = TDLS_CHAN_SWITCHING; 330 break; 331 case TDLS_EVENT_CHAN_SWITCH_STOPPED: 332 mwifiex_dbg(adapter, EVENT, 333 "tdls chan switch stopped, reason=%d\n", 334 tdls_evt->u.cs_stop_reason); 335 break; 336 default: 337 break; 338 } 339 340 return ret; 341 } 342 343 static void mwifiex_process_uap_tx_pause(struct mwifiex_private *priv, 344 struct mwifiex_ie_types_header *tlv) 345 { 346 struct mwifiex_tx_pause_tlv *tp; 347 struct mwifiex_sta_node *sta_ptr; 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_bh(&priv->sta_list_spinlock); 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_bh(&priv->sta_list_spinlock); 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; 380 381 tp = (void *)tlv; 382 mwifiex_dbg(priv->adapter, EVENT, 383 "sta tx_pause: %pM pause=%d, pkts=%d\n", 384 tp->peermac, tp->tx_pause, 385 tp->pkt_cnt); 386 387 if (ether_addr_equal(tp->peermac, priv->cfg_bssid)) { 388 if (tp->tx_pause) 389 priv->port_open = false; 390 else 391 priv->port_open = true; 392 } else { 393 if (!ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) 394 return; 395 396 status = mwifiex_get_tdls_link_status(priv, tp->peermac); 397 if (mwifiex_is_tdls_link_setup(status)) { 398 spin_lock_bh(&priv->sta_list_spinlock); 399 sta_ptr = mwifiex_get_sta_entry(priv, tp->peermac); 400 if (sta_ptr && sta_ptr->tx_pause != tp->tx_pause) { 401 sta_ptr->tx_pause = tp->tx_pause; 402 mwifiex_update_ralist_tx_pause(priv, 403 tp->peermac, 404 tp->tx_pause); 405 } 406 spin_unlock_bh(&priv->sta_list_spinlock); 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 static void 590 mwifiex_fw_dump_info_event(struct mwifiex_private *priv, 591 struct sk_buff *event_skb) 592 { 593 struct mwifiex_adapter *adapter = priv->adapter; 594 struct mwifiex_fw_dump_header *fw_dump_hdr = 595 (void *)adapter->event_body; 596 597 if (adapter->iface_type != MWIFIEX_USB) { 598 mwifiex_dbg(adapter, MSG, 599 "event is not on usb interface, ignore it\n"); 600 return; 601 } 602 603 if (!adapter->devdump_data) { 604 /* When receive the first event, allocate device dump 605 * buffer, dump driver info. 606 */ 607 adapter->devdump_data = vzalloc(MWIFIEX_FW_DUMP_SIZE); 608 if (!adapter->devdump_data) { 609 mwifiex_dbg(adapter, ERROR, 610 "vzalloc devdump data failure!\n"); 611 return; 612 } 613 614 mwifiex_drv_info_dump(adapter); 615 616 /* If no proceeded event arrive in 10s, upload device 617 * dump data, this will be useful if the end of 618 * transmission event get lost, in this cornel case, 619 * user would still get partial of the dump. 620 */ 621 mod_timer(&adapter->devdump_timer, 622 jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S)); 623 } 624 625 /* Overflow check */ 626 if (adapter->devdump_len + event_skb->len >= MWIFIEX_FW_DUMP_SIZE) 627 goto upload_dump; 628 629 memmove(adapter->devdump_data + adapter->devdump_len, 630 adapter->event_skb->data, event_skb->len); 631 adapter->devdump_len += event_skb->len; 632 633 if (le16_to_cpu(fw_dump_hdr->type == FW_DUMP_INFO_ENDED)) { 634 mwifiex_dbg(adapter, MSG, 635 "receive end of transmission flag event!\n"); 636 goto upload_dump; 637 } 638 return; 639 640 upload_dump: 641 del_timer_sync(&adapter->devdump_timer); 642 mwifiex_upload_device_dump(adapter); 643 } 644 645 /* 646 * This function handles events generated by firmware. 647 * 648 * This is a generic function and handles all events. 649 * 650 * Event specific routines are called by this function based 651 * upon the generated event cause. 652 * 653 * For the following events, the function just forwards them to upper 654 * layers, optionally recording the change - 655 * - EVENT_LINK_SENSED 656 * - EVENT_MIC_ERR_UNICAST 657 * - EVENT_MIC_ERR_MULTICAST 658 * - EVENT_PORT_RELEASE 659 * - EVENT_RSSI_LOW 660 * - EVENT_SNR_LOW 661 * - EVENT_MAX_FAIL 662 * - EVENT_RSSI_HIGH 663 * - EVENT_SNR_HIGH 664 * - EVENT_DATA_RSSI_LOW 665 * - EVENT_DATA_SNR_LOW 666 * - EVENT_DATA_RSSI_HIGH 667 * - EVENT_DATA_SNR_HIGH 668 * - EVENT_LINK_QUALITY 669 * - EVENT_PRE_BEACON_LOST 670 * - EVENT_IBSS_COALESCED 671 * - EVENT_IBSS_STA_CONNECT 672 * - EVENT_IBSS_STA_DISCONNECT 673 * - EVENT_WEP_ICV_ERR 674 * - EVENT_BW_CHANGE 675 * - EVENT_HOSTWAKE_STAIE 676 * 677 * For the following events, no action is taken - 678 * - EVENT_MIB_CHANGED 679 * - EVENT_INIT_DONE 680 * - EVENT_DUMMY_HOST_WAKEUP_SIGNAL 681 * 682 * Rest of the supported events requires driver handling - 683 * - EVENT_DEAUTHENTICATED 684 * - EVENT_DISASSOCIATED 685 * - EVENT_LINK_LOST 686 * - EVENT_PS_SLEEP 687 * - EVENT_PS_AWAKE 688 * - EVENT_DEEP_SLEEP_AWAKE 689 * - EVENT_HS_ACT_REQ 690 * - EVENT_ADHOC_BCN_LOST 691 * - EVENT_BG_SCAN_REPORT 692 * - EVENT_WMM_STATUS_CHANGE 693 * - EVENT_ADDBA 694 * - EVENT_DELBA 695 * - EVENT_BA_STREAM_TIEMOUT 696 * - EVENT_AMSDU_AGGR_CTRL 697 * - EVENT_FW_DUMP_INFO 698 */ 699 int mwifiex_process_sta_event(struct mwifiex_private *priv) 700 { 701 struct mwifiex_adapter *adapter = priv->adapter; 702 int ret = 0, i; 703 u32 eventcause = adapter->event_cause; 704 u16 ctrl, reason_code; 705 u8 ibss_sta_addr[ETH_ALEN]; 706 struct mwifiex_sta_node *sta_ptr; 707 708 switch (eventcause) { 709 case EVENT_DUMMY_HOST_WAKEUP_SIGNAL: 710 mwifiex_dbg(adapter, ERROR, 711 "invalid EVENT: DUMMY_HOST_WAKEUP_SIGNAL, ignore it\n"); 712 break; 713 case EVENT_LINK_SENSED: 714 mwifiex_dbg(adapter, EVENT, "event: LINK_SENSED\n"); 715 if (!netif_carrier_ok(priv->netdev)) 716 netif_carrier_on(priv->netdev); 717 mwifiex_wake_up_net_dev_queue(priv->netdev, adapter); 718 break; 719 720 case EVENT_DEAUTHENTICATED: 721 mwifiex_dbg(adapter, EVENT, "event: Deauthenticated\n"); 722 if (priv->wps.session_enable) { 723 mwifiex_dbg(adapter, INFO, 724 "info: receive deauth event in wps session\n"); 725 break; 726 } 727 adapter->dbg.num_event_deauth++; 728 if (priv->media_connected) { 729 reason_code = 730 get_unaligned_le16(adapter->event_body); 731 mwifiex_reset_connect_state(priv, reason_code, true); 732 } 733 break; 734 735 case EVENT_DISASSOCIATED: 736 mwifiex_dbg(adapter, EVENT, "event: Disassociated\n"); 737 if (priv->wps.session_enable) { 738 mwifiex_dbg(adapter, INFO, 739 "info: receive disassoc event in wps session\n"); 740 break; 741 } 742 adapter->dbg.num_event_disassoc++; 743 if (priv->media_connected) { 744 reason_code = 745 get_unaligned_le16(adapter->event_body); 746 mwifiex_reset_connect_state(priv, reason_code, true); 747 } 748 break; 749 750 case EVENT_LINK_LOST: 751 mwifiex_dbg(adapter, EVENT, "event: Link lost\n"); 752 adapter->dbg.num_event_link_lost++; 753 if (priv->media_connected) { 754 reason_code = 755 get_unaligned_le16(adapter->event_body); 756 mwifiex_reset_connect_state(priv, reason_code, true); 757 } 758 break; 759 760 case EVENT_PS_SLEEP: 761 mwifiex_dbg(adapter, EVENT, "info: EVENT: SLEEP\n"); 762 763 adapter->ps_state = PS_STATE_PRE_SLEEP; 764 765 mwifiex_check_ps_cond(adapter); 766 break; 767 768 case EVENT_PS_AWAKE: 769 mwifiex_dbg(adapter, EVENT, "info: EVENT: AWAKE\n"); 770 if (!adapter->pps_uapsd_mode && 771 (priv->port_open || 772 (priv->bss_mode == NL80211_IFTYPE_ADHOC)) && 773 priv->media_connected && adapter->sleep_period.period) { 774 adapter->pps_uapsd_mode = true; 775 mwifiex_dbg(adapter, EVENT, 776 "event: PPS/UAPSD mode activated\n"); 777 } 778 adapter->tx_lock_flag = false; 779 if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) { 780 if (mwifiex_check_last_packet_indication(priv)) { 781 if (adapter->data_sent || 782 (adapter->if_ops.is_port_ready && 783 !adapter->if_ops.is_port_ready(priv))) { 784 adapter->ps_state = PS_STATE_AWAKE; 785 adapter->pm_wakeup_card_req = false; 786 adapter->pm_wakeup_fw_try = false; 787 del_timer(&adapter->wakeup_timer); 788 break; 789 } 790 if (!mwifiex_send_null_packet 791 (priv, 792 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET | 793 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) 794 adapter->ps_state = 795 PS_STATE_SLEEP; 796 return 0; 797 } 798 } 799 adapter->ps_state = PS_STATE_AWAKE; 800 adapter->pm_wakeup_card_req = false; 801 adapter->pm_wakeup_fw_try = false; 802 del_timer(&adapter->wakeup_timer); 803 804 break; 805 806 case EVENT_DEEP_SLEEP_AWAKE: 807 adapter->if_ops.wakeup_complete(adapter); 808 mwifiex_dbg(adapter, EVENT, "event: DS_AWAKE\n"); 809 if (adapter->is_deep_sleep) 810 adapter->is_deep_sleep = false; 811 break; 812 813 case EVENT_HS_ACT_REQ: 814 mwifiex_dbg(adapter, EVENT, "event: HS_ACT_REQ\n"); 815 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_HS_CFG_ENH, 816 0, 0, NULL, false); 817 break; 818 819 case EVENT_MIC_ERR_UNICAST: 820 mwifiex_dbg(adapter, EVENT, "event: UNICAST MIC ERROR\n"); 821 cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid, 822 NL80211_KEYTYPE_PAIRWISE, 823 -1, NULL, GFP_KERNEL); 824 break; 825 826 case EVENT_MIC_ERR_MULTICAST: 827 mwifiex_dbg(adapter, EVENT, "event: MULTICAST MIC ERROR\n"); 828 cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid, 829 NL80211_KEYTYPE_GROUP, 830 -1, NULL, GFP_KERNEL); 831 break; 832 case EVENT_MIB_CHANGED: 833 case EVENT_INIT_DONE: 834 break; 835 836 case EVENT_ADHOC_BCN_LOST: 837 mwifiex_dbg(adapter, EVENT, "event: ADHOC_BCN_LOST\n"); 838 priv->adhoc_is_link_sensed = false; 839 mwifiex_clean_txrx(priv); 840 mwifiex_stop_net_dev_queue(priv->netdev, adapter); 841 if (netif_carrier_ok(priv->netdev)) 842 netif_carrier_off(priv->netdev); 843 break; 844 845 case EVENT_BG_SCAN_REPORT: 846 mwifiex_dbg(adapter, EVENT, "event: BGS_REPORT\n"); 847 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_BG_SCAN_QUERY, 848 HostCmd_ACT_GEN_GET, 0, NULL, false); 849 break; 850 851 case EVENT_BG_SCAN_STOPPED: 852 dev_dbg(adapter->dev, "event: BGS_STOPPED\n"); 853 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0); 854 if (priv->sched_scanning) 855 priv->sched_scanning = false; 856 break; 857 858 case EVENT_PORT_RELEASE: 859 mwifiex_dbg(adapter, EVENT, "event: PORT RELEASE\n"); 860 priv->port_open = true; 861 break; 862 863 case EVENT_EXT_SCAN_REPORT: 864 mwifiex_dbg(adapter, EVENT, "event: EXT_SCAN Report\n"); 865 /* We intend to skip this event during suspend, but handle 866 * it in interface disabled case 867 */ 868 if (adapter->ext_scan && (!priv->scan_aborting || 869 !netif_running(priv->netdev))) 870 ret = mwifiex_handle_event_ext_scan_report(priv, 871 adapter->event_skb->data); 872 873 break; 874 875 case EVENT_WMM_STATUS_CHANGE: 876 mwifiex_dbg(adapter, EVENT, "event: WMM status changed\n"); 877 ret = mwifiex_send_cmd(priv, HostCmd_CMD_WMM_GET_STATUS, 878 0, 0, NULL, false); 879 break; 880 881 case EVENT_RSSI_LOW: 882 cfg80211_cqm_rssi_notify(priv->netdev, 883 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, 884 0, GFP_KERNEL); 885 mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO, 886 HostCmd_ACT_GEN_GET, 0, NULL, false); 887 priv->subsc_evt_rssi_state = RSSI_LOW_RECVD; 888 mwifiex_dbg(adapter, EVENT, "event: Beacon RSSI_LOW\n"); 889 break; 890 case EVENT_SNR_LOW: 891 mwifiex_dbg(adapter, EVENT, "event: Beacon SNR_LOW\n"); 892 break; 893 case EVENT_MAX_FAIL: 894 mwifiex_dbg(adapter, EVENT, "event: MAX_FAIL\n"); 895 break; 896 case EVENT_RSSI_HIGH: 897 cfg80211_cqm_rssi_notify(priv->netdev, 898 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, 899 0, GFP_KERNEL); 900 mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO, 901 HostCmd_ACT_GEN_GET, 0, NULL, false); 902 priv->subsc_evt_rssi_state = RSSI_HIGH_RECVD; 903 mwifiex_dbg(adapter, EVENT, "event: Beacon RSSI_HIGH\n"); 904 break; 905 case EVENT_SNR_HIGH: 906 mwifiex_dbg(adapter, EVENT, "event: Beacon SNR_HIGH\n"); 907 break; 908 case EVENT_DATA_RSSI_LOW: 909 mwifiex_dbg(adapter, EVENT, "event: Data RSSI_LOW\n"); 910 break; 911 case EVENT_DATA_SNR_LOW: 912 mwifiex_dbg(adapter, EVENT, "event: Data SNR_LOW\n"); 913 break; 914 case EVENT_DATA_RSSI_HIGH: 915 mwifiex_dbg(adapter, EVENT, "event: Data RSSI_HIGH\n"); 916 break; 917 case EVENT_DATA_SNR_HIGH: 918 mwifiex_dbg(adapter, EVENT, "event: Data SNR_HIGH\n"); 919 break; 920 case EVENT_LINK_QUALITY: 921 mwifiex_dbg(adapter, EVENT, "event: Link Quality\n"); 922 break; 923 case EVENT_PRE_BEACON_LOST: 924 mwifiex_dbg(adapter, EVENT, "event: Pre-Beacon Lost\n"); 925 break; 926 case EVENT_IBSS_COALESCED: 927 mwifiex_dbg(adapter, EVENT, "event: IBSS_COALESCED\n"); 928 ret = mwifiex_send_cmd(priv, 929 HostCmd_CMD_802_11_IBSS_COALESCING_STATUS, 930 HostCmd_ACT_GEN_GET, 0, NULL, false); 931 break; 932 case EVENT_IBSS_STA_CONNECT: 933 ether_addr_copy(ibss_sta_addr, adapter->event_body + 2); 934 mwifiex_dbg(adapter, EVENT, "event: IBSS_STA_CONNECT %pM\n", 935 ibss_sta_addr); 936 sta_ptr = mwifiex_add_sta_entry(priv, ibss_sta_addr); 937 if (sta_ptr && adapter->adhoc_11n_enabled) { 938 mwifiex_check_ibss_peer_capabilities(priv, sta_ptr, 939 adapter->event_skb); 940 if (sta_ptr->is_11n_enabled) 941 for (i = 0; i < MAX_NUM_TID; i++) 942 sta_ptr->ampdu_sta[i] = 943 priv->aggr_prio_tbl[i].ampdu_user; 944 else 945 for (i = 0; i < MAX_NUM_TID; i++) 946 sta_ptr->ampdu_sta[i] = 947 BA_STREAM_NOT_ALLOWED; 948 memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq)); 949 } 950 951 break; 952 case EVENT_IBSS_STA_DISCONNECT: 953 ether_addr_copy(ibss_sta_addr, adapter->event_body + 2); 954 mwifiex_dbg(adapter, EVENT, "event: IBSS_STA_DISCONNECT %pM\n", 955 ibss_sta_addr); 956 sta_ptr = mwifiex_get_sta_entry(priv, ibss_sta_addr); 957 if (sta_ptr && sta_ptr->is_11n_enabled) { 958 mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, 959 ibss_sta_addr); 960 mwifiex_del_tx_ba_stream_tbl_by_ra(priv, ibss_sta_addr); 961 } 962 mwifiex_wmm_del_peer_ra_list(priv, ibss_sta_addr); 963 mwifiex_del_sta_entry(priv, ibss_sta_addr); 964 break; 965 case EVENT_ADDBA: 966 mwifiex_dbg(adapter, EVENT, "event: ADDBA Request\n"); 967 mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP, 968 HostCmd_ACT_GEN_SET, 0, 969 adapter->event_body, false); 970 break; 971 case EVENT_DELBA: 972 mwifiex_dbg(adapter, EVENT, "event: DELBA Request\n"); 973 mwifiex_11n_delete_ba_stream(priv, adapter->event_body); 974 break; 975 case EVENT_BA_STREAM_TIEMOUT: 976 mwifiex_dbg(adapter, EVENT, "event: BA Stream timeout\n"); 977 mwifiex_11n_ba_stream_timeout(priv, 978 (struct host_cmd_ds_11n_batimeout 979 *) 980 adapter->event_body); 981 break; 982 case EVENT_AMSDU_AGGR_CTRL: 983 ctrl = get_unaligned_le16(adapter->event_body); 984 mwifiex_dbg(adapter, EVENT, 985 "event: AMSDU_AGGR_CTRL %d\n", ctrl); 986 987 adapter->tx_buf_size = 988 min_t(u16, adapter->curr_tx_buf_size, ctrl); 989 mwifiex_dbg(adapter, EVENT, "event: tx_buf_size %d\n", 990 adapter->tx_buf_size); 991 break; 992 993 case EVENT_WEP_ICV_ERR: 994 mwifiex_dbg(adapter, EVENT, "event: WEP ICV error\n"); 995 break; 996 997 case EVENT_BW_CHANGE: 998 mwifiex_dbg(adapter, EVENT, "event: BW Change\n"); 999 break; 1000 1001 case EVENT_HOSTWAKE_STAIE: 1002 mwifiex_dbg(adapter, EVENT, 1003 "event: HOSTWAKE_STAIE %d\n", eventcause); 1004 break; 1005 1006 case EVENT_REMAIN_ON_CHAN_EXPIRED: 1007 mwifiex_dbg(adapter, EVENT, 1008 "event: Remain on channel expired\n"); 1009 cfg80211_remain_on_channel_expired(&priv->wdev, 1010 priv->roc_cfg.cookie, 1011 &priv->roc_cfg.chan, 1012 GFP_ATOMIC); 1013 1014 memset(&priv->roc_cfg, 0x00, sizeof(struct mwifiex_roc_cfg)); 1015 1016 break; 1017 1018 case EVENT_CHANNEL_SWITCH_ANN: 1019 mwifiex_dbg(adapter, EVENT, "event: Channel Switch Announcement\n"); 1020 priv->csa_expire_time = 1021 jiffies + msecs_to_jiffies(DFS_CHAN_MOVE_TIME); 1022 priv->csa_chan = priv->curr_bss_params.bss_descriptor.channel; 1023 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_DEAUTHENTICATE, 1024 HostCmd_ACT_GEN_SET, 0, 1025 priv->curr_bss_params.bss_descriptor.mac_address, 1026 false); 1027 break; 1028 1029 case EVENT_TDLS_GENERIC_EVENT: 1030 ret = mwifiex_parse_tdls_event(priv, adapter->event_skb); 1031 break; 1032 1033 case EVENT_TX_DATA_PAUSE: 1034 mwifiex_dbg(adapter, EVENT, "event: TX DATA PAUSE\n"); 1035 mwifiex_process_tx_pause_event(priv, adapter->event_skb); 1036 break; 1037 1038 case EVENT_MULTI_CHAN_INFO: 1039 mwifiex_dbg(adapter, EVENT, "event: multi-chan info\n"); 1040 mwifiex_process_multi_chan_event(priv, adapter->event_skb); 1041 break; 1042 1043 case EVENT_TX_STATUS_REPORT: 1044 mwifiex_dbg(adapter, EVENT, "event: TX_STATUS Report\n"); 1045 mwifiex_parse_tx_status_event(priv, adapter->event_body); 1046 break; 1047 1048 case EVENT_CHANNEL_REPORT_RDY: 1049 mwifiex_dbg(adapter, EVENT, "event: Channel Report\n"); 1050 ret = mwifiex_11h_handle_chanrpt_ready(priv, 1051 adapter->event_skb); 1052 break; 1053 case EVENT_RADAR_DETECTED: 1054 mwifiex_dbg(adapter, EVENT, "event: Radar detected\n"); 1055 ret = mwifiex_11h_handle_radar_detected(priv, 1056 adapter->event_skb); 1057 break; 1058 case EVENT_BT_COEX_WLAN_PARA_CHANGE: 1059 dev_dbg(adapter->dev, "EVENT: BT coex wlan param update\n"); 1060 mwifiex_bt_coex_wlan_param_update_event(priv, 1061 adapter->event_skb); 1062 break; 1063 case EVENT_RXBA_SYNC: 1064 dev_dbg(adapter->dev, "EVENT: RXBA_SYNC\n"); 1065 mwifiex_11n_rxba_sync_event(priv, adapter->event_body, 1066 adapter->event_skb->len - 1067 sizeof(eventcause)); 1068 break; 1069 case EVENT_FW_DUMP_INFO: 1070 mwifiex_dbg(adapter, EVENT, "event: firmware debug info\n"); 1071 mwifiex_fw_dump_info_event(priv, adapter->event_skb); 1072 break; 1073 /* Debugging event; not used, but let's not print an ERROR for it. */ 1074 case EVENT_UNKNOWN_DEBUG: 1075 mwifiex_dbg(adapter, EVENT, "event: debug\n"); 1076 break; 1077 default: 1078 mwifiex_dbg(adapter, ERROR, "event: unknown event id: %#x\n", 1079 eventcause); 1080 break; 1081 } 1082 1083 return ret; 1084 } 1085