1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * NXP Wireless LAN device driver: station event handling 4 * 5 * Copyright 2011-2020 NXP 6 */ 7 8 #include "decl.h" 9 #include "ioctl.h" 10 #include "util.h" 11 #include "fw.h" 12 #include "main.h" 13 #include "wmm.h" 14 #include "11n.h" 15 16 #define MWIFIEX_IBSS_CONNECT_EVT_FIX_SIZE 12 17 18 static int mwifiex_check_ibss_peer_capabilities(struct mwifiex_private *priv, 19 struct mwifiex_sta_node *sta_ptr, 20 struct sk_buff *event) 21 { 22 int evt_len, ele_len; 23 u8 *curr; 24 struct ieee_types_header *ele_hdr; 25 struct mwifiex_ie_types_mgmt_frame *tlv_mgmt_frame; 26 const struct ieee80211_ht_cap *ht_cap; 27 const struct ieee80211_vht_cap *vht_cap; 28 29 skb_pull(event, MWIFIEX_IBSS_CONNECT_EVT_FIX_SIZE); 30 evt_len = event->len; 31 curr = event->data; 32 33 mwifiex_dbg_dump(priv->adapter, EVT_D, "ibss peer capabilities:", 34 event->data, event->len); 35 36 skb_push(event, MWIFIEX_IBSS_CONNECT_EVT_FIX_SIZE); 37 38 tlv_mgmt_frame = (void *)curr; 39 if (evt_len >= sizeof(*tlv_mgmt_frame) && 40 le16_to_cpu(tlv_mgmt_frame->header.type) == 41 TLV_TYPE_UAP_MGMT_FRAME) { 42 /* Locate curr pointer to the start of beacon tlv, 43 * timestamp 8 bytes, beacon intervel 2 bytes, 44 * capability info 2 bytes, totally 12 byte beacon header 45 */ 46 evt_len = le16_to_cpu(tlv_mgmt_frame->header.len); 47 curr += (sizeof(*tlv_mgmt_frame) + 12); 48 } else { 49 mwifiex_dbg(priv->adapter, MSG, 50 "management frame tlv not found!\n"); 51 return 0; 52 } 53 54 while (evt_len >= sizeof(*ele_hdr)) { 55 ele_hdr = (struct ieee_types_header *)curr; 56 ele_len = ele_hdr->len; 57 58 if (evt_len < ele_len + sizeof(*ele_hdr)) 59 break; 60 61 switch (ele_hdr->element_id) { 62 case WLAN_EID_HT_CAPABILITY: 63 sta_ptr->is_11n_enabled = true; 64 ht_cap = (void *)(ele_hdr + 2); 65 sta_ptr->max_amsdu = le16_to_cpu(ht_cap->cap_info) & 66 IEEE80211_HT_CAP_MAX_AMSDU ? 67 MWIFIEX_TX_DATA_BUF_SIZE_8K : 68 MWIFIEX_TX_DATA_BUF_SIZE_4K; 69 mwifiex_dbg(priv->adapter, INFO, 70 "11n enabled!, max_amsdu : %d\n", 71 sta_ptr->max_amsdu); 72 break; 73 74 case WLAN_EID_VHT_CAPABILITY: 75 sta_ptr->is_11ac_enabled = true; 76 vht_cap = (void *)(ele_hdr + 2); 77 /* check VHT MAXMPDU capability */ 78 switch (le32_to_cpu(vht_cap->vht_cap_info) & 0x3) { 79 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454: 80 sta_ptr->max_amsdu = 81 MWIFIEX_TX_DATA_BUF_SIZE_12K; 82 break; 83 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991: 84 sta_ptr->max_amsdu = 85 MWIFIEX_TX_DATA_BUF_SIZE_8K; 86 break; 87 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895: 88 sta_ptr->max_amsdu = 89 MWIFIEX_TX_DATA_BUF_SIZE_4K; 90 break; 91 default: 92 break; 93 } 94 95 mwifiex_dbg(priv->adapter, INFO, 96 "11ac enabled!, max_amsdu : %d\n", 97 sta_ptr->max_amsdu); 98 break; 99 default: 100 break; 101 } 102 103 curr += (ele_len + sizeof(*ele_hdr)); 104 evt_len -= (ele_len + sizeof(*ele_hdr)); 105 } 106 107 return 0; 108 } 109 110 /* 111 * This function resets the connection state. 112 * 113 * The function is invoked after receiving a disconnect event from firmware, 114 * and performs the following actions - 115 * - Set media status to disconnected 116 * - Clean up Tx and Rx packets 117 * - Resets SNR/NF/RSSI value in driver 118 * - Resets security configurations in driver 119 * - Enables auto data rate 120 * - Saves the previous SSID and BSSID so that they can 121 * be used for re-association, if required 122 * - Erases current SSID and BSSID information 123 * - Sends a disconnect event to upper layers/applications. 124 */ 125 void mwifiex_reset_connect_state(struct mwifiex_private *priv, u16 reason_code, 126 bool from_ap) 127 { 128 struct mwifiex_adapter *adapter = priv->adapter; 129 130 if (!priv->media_connected) 131 return; 132 133 mwifiex_dbg(adapter, INFO, 134 "info: handles disconnect event\n"); 135 136 priv->media_connected = false; 137 138 priv->auth_flag = 0; 139 priv->auth_alg = WLAN_AUTH_NONE; 140 141 priv->scan_block = false; 142 priv->port_open = false; 143 144 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) && 145 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) { 146 mwifiex_disable_all_tdls_links(priv); 147 148 if (priv->adapter->auto_tdls) 149 mwifiex_clean_auto_tdls(priv); 150 } 151 152 /* Free Tx and Rx packets, report disconnect to upper layer */ 153 mwifiex_clean_txrx(priv); 154 155 /* Reset SNR/NF/RSSI values */ 156 priv->data_rssi_last = 0; 157 priv->data_nf_last = 0; 158 priv->data_rssi_avg = 0; 159 priv->data_nf_avg = 0; 160 priv->bcn_rssi_last = 0; 161 priv->bcn_nf_last = 0; 162 priv->bcn_rssi_avg = 0; 163 priv->bcn_nf_avg = 0; 164 priv->rxpd_rate = 0; 165 priv->rxpd_htinfo = 0; 166 priv->sec_info.wpa_enabled = false; 167 priv->sec_info.wpa2_enabled = false; 168 priv->wpa_ie_len = 0; 169 170 priv->sec_info.wapi_enabled = false; 171 priv->wapi_ie_len = 0; 172 priv->sec_info.wapi_key_on = false; 173 174 priv->sec_info.encryption_mode = 0; 175 176 /* Enable auto data rate */ 177 priv->is_data_rate_auto = true; 178 priv->data_rate = 0; 179 180 priv->assoc_resp_ht_param = 0; 181 priv->ht_param_present = false; 182 183 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA || 184 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) && priv->hist_data) 185 mwifiex_hist_data_reset(priv); 186 187 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) { 188 priv->adhoc_state = ADHOC_IDLE; 189 priv->adhoc_is_link_sensed = false; 190 } 191 192 /* 193 * Memorize the previous SSID and BSSID so 194 * it could be used for re-assoc 195 */ 196 197 mwifiex_dbg(adapter, INFO, 198 "info: previous SSID=%s, SSID len=%u\n", 199 priv->prev_ssid.ssid, priv->prev_ssid.ssid_len); 200 201 mwifiex_dbg(adapter, INFO, 202 "info: current SSID=%s, SSID len=%u\n", 203 priv->curr_bss_params.bss_descriptor.ssid.ssid, 204 priv->curr_bss_params.bss_descriptor.ssid.ssid_len); 205 206 memcpy(&priv->prev_ssid, 207 &priv->curr_bss_params.bss_descriptor.ssid, 208 sizeof(struct cfg80211_ssid)); 209 210 memcpy(priv->prev_bssid, 211 priv->curr_bss_params.bss_descriptor.mac_address, ETH_ALEN); 212 213 /* Need to erase the current SSID and BSSID info */ 214 memset(&priv->curr_bss_params, 0x00, sizeof(priv->curr_bss_params)); 215 216 adapter->tx_lock_flag = false; 217 adapter->pps_uapsd_mode = false; 218 219 if (test_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags) && 220 adapter->curr_cmd) 221 return; 222 priv->media_connected = false; 223 mwifiex_dbg(adapter, MSG, 224 "info: successfully disconnected from %pM: reason code %d\n", 225 priv->cfg_bssid, reason_code); 226 if (priv->bss_mode == NL80211_IFTYPE_STATION || 227 priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) { 228 if (adapter->host_mlme_enabled && adapter->host_mlme_link_lost) 229 mwifiex_host_mlme_disconnect(adapter->priv_link_lost, 230 reason_code, NULL); 231 else 232 cfg80211_disconnected(priv->netdev, reason_code, NULL, 233 0, !from_ap, GFP_KERNEL); 234 } 235 eth_zero_addr(priv->cfg_bssid); 236 237 mwifiex_stop_net_dev_queue(priv->netdev, adapter); 238 if (netif_carrier_ok(priv->netdev)) 239 netif_carrier_off(priv->netdev); 240 241 if (!ISSUPP_FIRMWARE_SUPPLICANT(priv->adapter->fw_cap_info)) 242 return; 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; 344 345 tp = (void *)tlv; 346 mwifiex_dbg(priv->adapter, EVENT, 347 "uap tx_pause: %pM pause=%d, pkts=%d\n", 348 tp->peermac, tp->tx_pause, 349 tp->pkt_cnt); 350 351 if (ether_addr_equal(tp->peermac, priv->netdev->dev_addr)) { 352 if (tp->tx_pause) 353 priv->port_open = false; 354 else 355 priv->port_open = true; 356 } else if (is_multicast_ether_addr(tp->peermac)) { 357 mwifiex_update_ralist_tx_pause(priv, tp->peermac, tp->tx_pause); 358 } else { 359 spin_lock_bh(&priv->sta_list_spinlock); 360 sta_ptr = mwifiex_get_sta_entry(priv, tp->peermac); 361 if (sta_ptr && sta_ptr->tx_pause != tp->tx_pause) { 362 sta_ptr->tx_pause = tp->tx_pause; 363 spin_unlock_bh(&priv->sta_list_spinlock); 364 mwifiex_update_ralist_tx_pause(priv, tp->peermac, 365 tp->tx_pause); 366 } else { 367 spin_unlock_bh(&priv->sta_list_spinlock); 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; 378 379 tp = (void *)tlv; 380 mwifiex_dbg(priv->adapter, EVENT, 381 "sta tx_pause: %pM pause=%d, pkts=%d\n", 382 tp->peermac, tp->tx_pause, 383 tp->pkt_cnt); 384 385 if (ether_addr_equal(tp->peermac, priv->cfg_bssid)) { 386 if (tp->tx_pause) 387 priv->port_open = false; 388 else 389 priv->port_open = true; 390 } else { 391 if (!ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) 392 return; 393 394 status = mwifiex_get_tdls_link_status(priv, tp->peermac); 395 if (mwifiex_is_tdls_link_setup(status)) { 396 spin_lock_bh(&priv->sta_list_spinlock); 397 sta_ptr = mwifiex_get_sta_entry(priv, tp->peermac); 398 if (sta_ptr && sta_ptr->tx_pause != tp->tx_pause) { 399 sta_ptr->tx_pause = tp->tx_pause; 400 spin_unlock_bh(&priv->sta_list_spinlock); 401 mwifiex_update_ralist_tx_pause(priv, 402 tp->peermac, 403 tp->tx_pause); 404 } else { 405 spin_unlock_bh(&priv->sta_list_spinlock); 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 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 schedule_delayed_work(&adapter->devdump_work, 622 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 cancel_delayed_work_sync(&adapter->devdump_work); 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 if (adapter->host_mlme_enabled) { 757 adapter->priv_link_lost = priv; 758 adapter->host_mlme_link_lost = true; 759 queue_work(adapter->host_mlme_workqueue, 760 &adapter->host_mlme_work); 761 } else { 762 mwifiex_reset_connect_state(priv, reason_code, 763 true); 764 } 765 } 766 break; 767 768 case EVENT_PS_SLEEP: 769 mwifiex_dbg(adapter, EVENT, "info: EVENT: SLEEP\n"); 770 771 adapter->ps_state = PS_STATE_PRE_SLEEP; 772 773 mwifiex_check_ps_cond(adapter); 774 break; 775 776 case EVENT_PS_AWAKE: 777 mwifiex_dbg(adapter, EVENT, "info: EVENT: AWAKE\n"); 778 if (!adapter->pps_uapsd_mode && 779 (priv->port_open || 780 (priv->bss_mode == NL80211_IFTYPE_ADHOC)) && 781 priv->media_connected && adapter->sleep_period.period) { 782 adapter->pps_uapsd_mode = true; 783 mwifiex_dbg(adapter, EVENT, 784 "event: PPS/UAPSD mode activated\n"); 785 } 786 adapter->tx_lock_flag = false; 787 if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) { 788 if (mwifiex_check_last_packet_indication(priv)) { 789 if (adapter->data_sent || 790 (adapter->if_ops.is_port_ready && 791 !adapter->if_ops.is_port_ready(priv))) { 792 adapter->ps_state = PS_STATE_AWAKE; 793 adapter->pm_wakeup_card_req = false; 794 adapter->pm_wakeup_fw_try = false; 795 del_timer(&adapter->wakeup_timer); 796 break; 797 } 798 if (!mwifiex_send_null_packet 799 (priv, 800 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET | 801 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) 802 adapter->ps_state = 803 PS_STATE_SLEEP; 804 return 0; 805 } 806 } 807 adapter->ps_state = PS_STATE_AWAKE; 808 adapter->pm_wakeup_card_req = false; 809 adapter->pm_wakeup_fw_try = false; 810 del_timer(&adapter->wakeup_timer); 811 812 break; 813 814 case EVENT_DEEP_SLEEP_AWAKE: 815 adapter->if_ops.wakeup_complete(adapter); 816 mwifiex_dbg(adapter, EVENT, "event: DS_AWAKE\n"); 817 if (adapter->is_deep_sleep) 818 adapter->is_deep_sleep = false; 819 break; 820 821 case EVENT_HS_ACT_REQ: 822 mwifiex_dbg(adapter, EVENT, "event: HS_ACT_REQ\n"); 823 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_HS_CFG_ENH, 824 0, 0, NULL, false); 825 break; 826 827 case EVENT_MIC_ERR_UNICAST: 828 mwifiex_dbg(adapter, EVENT, "event: UNICAST MIC ERROR\n"); 829 cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid, 830 NL80211_KEYTYPE_PAIRWISE, 831 -1, NULL, GFP_KERNEL); 832 break; 833 834 case EVENT_MIC_ERR_MULTICAST: 835 mwifiex_dbg(adapter, EVENT, "event: MULTICAST MIC ERROR\n"); 836 cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid, 837 NL80211_KEYTYPE_GROUP, 838 -1, NULL, GFP_KERNEL); 839 break; 840 case EVENT_MIB_CHANGED: 841 case EVENT_INIT_DONE: 842 break; 843 844 case EVENT_ADHOC_BCN_LOST: 845 mwifiex_dbg(adapter, EVENT, "event: ADHOC_BCN_LOST\n"); 846 priv->adhoc_is_link_sensed = false; 847 mwifiex_clean_txrx(priv); 848 mwifiex_stop_net_dev_queue(priv->netdev, adapter); 849 if (netif_carrier_ok(priv->netdev)) 850 netif_carrier_off(priv->netdev); 851 break; 852 853 case EVENT_BG_SCAN_REPORT: 854 mwifiex_dbg(adapter, EVENT, "event: BGS_REPORT\n"); 855 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_BG_SCAN_QUERY, 856 HostCmd_ACT_GEN_GET, 0, NULL, false); 857 break; 858 859 case EVENT_BG_SCAN_STOPPED: 860 dev_dbg(adapter->dev, "event: BGS_STOPPED\n"); 861 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0); 862 if (priv->sched_scanning) 863 priv->sched_scanning = false; 864 break; 865 866 case EVENT_PORT_RELEASE: 867 mwifiex_dbg(adapter, EVENT, "event: PORT RELEASE\n"); 868 priv->port_open = true; 869 break; 870 871 case EVENT_EXT_SCAN_REPORT: 872 mwifiex_dbg(adapter, EVENT, "event: EXT_SCAN Report\n"); 873 /* We intend to skip this event during suspend, but handle 874 * it in interface disabled case 875 */ 876 if (adapter->ext_scan && (!priv->scan_aborting || 877 !netif_running(priv->netdev))) 878 ret = mwifiex_handle_event_ext_scan_report(priv, 879 adapter->event_skb->data); 880 881 break; 882 883 case EVENT_WMM_STATUS_CHANGE: 884 mwifiex_dbg(adapter, EVENT, "event: WMM status changed\n"); 885 ret = mwifiex_send_cmd(priv, HostCmd_CMD_WMM_GET_STATUS, 886 0, 0, NULL, false); 887 break; 888 889 case EVENT_RSSI_LOW: 890 cfg80211_cqm_rssi_notify(priv->netdev, 891 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, 892 0, GFP_KERNEL); 893 mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO, 894 HostCmd_ACT_GEN_GET, 0, NULL, false); 895 priv->subsc_evt_rssi_state = RSSI_LOW_RECVD; 896 mwifiex_dbg(adapter, EVENT, "event: Beacon RSSI_LOW\n"); 897 break; 898 case EVENT_SNR_LOW: 899 mwifiex_dbg(adapter, EVENT, "event: Beacon SNR_LOW\n"); 900 break; 901 case EVENT_MAX_FAIL: 902 mwifiex_dbg(adapter, EVENT, "event: MAX_FAIL\n"); 903 break; 904 case EVENT_RSSI_HIGH: 905 cfg80211_cqm_rssi_notify(priv->netdev, 906 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, 907 0, GFP_KERNEL); 908 mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO, 909 HostCmd_ACT_GEN_GET, 0, NULL, false); 910 priv->subsc_evt_rssi_state = RSSI_HIGH_RECVD; 911 mwifiex_dbg(adapter, EVENT, "event: Beacon RSSI_HIGH\n"); 912 break; 913 case EVENT_SNR_HIGH: 914 mwifiex_dbg(adapter, EVENT, "event: Beacon SNR_HIGH\n"); 915 break; 916 case EVENT_DATA_RSSI_LOW: 917 mwifiex_dbg(adapter, EVENT, "event: Data RSSI_LOW\n"); 918 break; 919 case EVENT_DATA_SNR_LOW: 920 mwifiex_dbg(adapter, EVENT, "event: Data SNR_LOW\n"); 921 break; 922 case EVENT_DATA_RSSI_HIGH: 923 mwifiex_dbg(adapter, EVENT, "event: Data RSSI_HIGH\n"); 924 break; 925 case EVENT_DATA_SNR_HIGH: 926 mwifiex_dbg(adapter, EVENT, "event: Data SNR_HIGH\n"); 927 break; 928 case EVENT_LINK_QUALITY: 929 mwifiex_dbg(adapter, EVENT, "event: Link Quality\n"); 930 break; 931 case EVENT_PRE_BEACON_LOST: 932 mwifiex_dbg(adapter, EVENT, "event: Pre-Beacon Lost\n"); 933 break; 934 case EVENT_IBSS_COALESCED: 935 mwifiex_dbg(adapter, EVENT, "event: IBSS_COALESCED\n"); 936 ret = mwifiex_send_cmd(priv, 937 HostCmd_CMD_802_11_IBSS_COALESCING_STATUS, 938 HostCmd_ACT_GEN_GET, 0, NULL, false); 939 break; 940 case EVENT_IBSS_STA_CONNECT: 941 ether_addr_copy(ibss_sta_addr, adapter->event_body + 2); 942 mwifiex_dbg(adapter, EVENT, "event: IBSS_STA_CONNECT %pM\n", 943 ibss_sta_addr); 944 sta_ptr = mwifiex_add_sta_entry(priv, ibss_sta_addr); 945 if (sta_ptr && adapter->adhoc_11n_enabled) { 946 mwifiex_check_ibss_peer_capabilities(priv, sta_ptr, 947 adapter->event_skb); 948 if (sta_ptr->is_11n_enabled) 949 for (i = 0; i < MAX_NUM_TID; i++) 950 sta_ptr->ampdu_sta[i] = 951 priv->aggr_prio_tbl[i].ampdu_user; 952 else 953 for (i = 0; i < MAX_NUM_TID; i++) 954 sta_ptr->ampdu_sta[i] = 955 BA_STREAM_NOT_ALLOWED; 956 memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq)); 957 } 958 959 break; 960 case EVENT_IBSS_STA_DISCONNECT: 961 ether_addr_copy(ibss_sta_addr, adapter->event_body + 2); 962 mwifiex_dbg(adapter, EVENT, "event: IBSS_STA_DISCONNECT %pM\n", 963 ibss_sta_addr); 964 sta_ptr = mwifiex_get_sta_entry(priv, ibss_sta_addr); 965 if (sta_ptr && sta_ptr->is_11n_enabled) { 966 mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, 967 ibss_sta_addr); 968 mwifiex_del_tx_ba_stream_tbl_by_ra(priv, ibss_sta_addr); 969 } 970 mwifiex_wmm_del_peer_ra_list(priv, ibss_sta_addr); 971 mwifiex_del_sta_entry(priv, ibss_sta_addr); 972 break; 973 case EVENT_ADDBA: 974 mwifiex_dbg(adapter, EVENT, "event: ADDBA Request\n"); 975 mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP, 976 HostCmd_ACT_GEN_SET, 0, 977 adapter->event_body, false); 978 break; 979 case EVENT_DELBA: 980 mwifiex_dbg(adapter, EVENT, "event: DELBA Request\n"); 981 mwifiex_11n_delete_ba_stream(priv, adapter->event_body); 982 break; 983 case EVENT_BA_STREAM_TIEMOUT: 984 mwifiex_dbg(adapter, EVENT, "event: BA Stream timeout\n"); 985 mwifiex_11n_ba_stream_timeout(priv, 986 (struct host_cmd_ds_11n_batimeout 987 *) 988 adapter->event_body); 989 break; 990 case EVENT_AMSDU_AGGR_CTRL: 991 ctrl = get_unaligned_le16(adapter->event_body); 992 mwifiex_dbg(adapter, EVENT, 993 "event: AMSDU_AGGR_CTRL %d\n", ctrl); 994 995 adapter->tx_buf_size = 996 min_t(u16, adapter->curr_tx_buf_size, ctrl); 997 mwifiex_dbg(adapter, EVENT, "event: tx_buf_size %d\n", 998 adapter->tx_buf_size); 999 break; 1000 1001 case EVENT_WEP_ICV_ERR: 1002 mwifiex_dbg(adapter, EVENT, "event: WEP ICV error\n"); 1003 break; 1004 1005 case EVENT_BW_CHANGE: 1006 mwifiex_dbg(adapter, EVENT, "event: BW Change\n"); 1007 break; 1008 1009 case EVENT_HOSTWAKE_STAIE: 1010 mwifiex_dbg(adapter, EVENT, 1011 "event: HOSTWAKE_STAIE %d\n", eventcause); 1012 break; 1013 1014 case EVENT_REMAIN_ON_CHAN_EXPIRED: 1015 mwifiex_dbg(adapter, EVENT, 1016 "event: Remain on channel expired\n"); 1017 1018 if (adapter->host_mlme_enabled && 1019 (priv->auth_flag & HOST_MLME_AUTH_PENDING)) { 1020 priv->auth_flag = 0; 1021 priv->auth_alg = WLAN_AUTH_NONE; 1022 } else { 1023 cfg80211_remain_on_channel_expired(&priv->wdev, 1024 priv->roc_cfg.cookie, 1025 &priv->roc_cfg.chan, 1026 GFP_ATOMIC); 1027 } 1028 1029 memset(&priv->roc_cfg, 0x00, sizeof(struct mwifiex_roc_cfg)); 1030 1031 break; 1032 1033 case EVENT_CHANNEL_SWITCH_ANN: 1034 mwifiex_dbg(adapter, EVENT, "event: Channel Switch Announcement\n"); 1035 priv->csa_expire_time = 1036 jiffies + msecs_to_jiffies(DFS_CHAN_MOVE_TIME); 1037 priv->csa_chan = priv->curr_bss_params.bss_descriptor.channel; 1038 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_DEAUTHENTICATE, 1039 HostCmd_ACT_GEN_SET, 0, 1040 priv->curr_bss_params.bss_descriptor.mac_address, 1041 false); 1042 break; 1043 1044 case EVENT_TDLS_GENERIC_EVENT: 1045 ret = mwifiex_parse_tdls_event(priv, adapter->event_skb); 1046 break; 1047 1048 case EVENT_TX_DATA_PAUSE: 1049 mwifiex_dbg(adapter, EVENT, "event: TX DATA PAUSE\n"); 1050 mwifiex_process_tx_pause_event(priv, adapter->event_skb); 1051 break; 1052 1053 case EVENT_MULTI_CHAN_INFO: 1054 mwifiex_dbg(adapter, EVENT, "event: multi-chan info\n"); 1055 mwifiex_process_multi_chan_event(priv, adapter->event_skb); 1056 break; 1057 1058 case EVENT_TX_STATUS_REPORT: 1059 mwifiex_dbg(adapter, EVENT, "event: TX_STATUS Report\n"); 1060 mwifiex_parse_tx_status_event(priv, adapter->event_body); 1061 break; 1062 1063 case EVENT_CHANNEL_REPORT_RDY: 1064 mwifiex_dbg(adapter, EVENT, "event: Channel Report\n"); 1065 ret = mwifiex_11h_handle_chanrpt_ready(priv, 1066 adapter->event_skb); 1067 break; 1068 case EVENT_RADAR_DETECTED: 1069 mwifiex_dbg(adapter, EVENT, "event: Radar detected\n"); 1070 ret = mwifiex_11h_handle_radar_detected(priv, 1071 adapter->event_skb); 1072 break; 1073 case EVENT_BT_COEX_WLAN_PARA_CHANGE: 1074 dev_dbg(adapter->dev, "EVENT: BT coex wlan param update\n"); 1075 if (adapter->ignore_btcoex_events) 1076 break; 1077 1078 mwifiex_bt_coex_wlan_param_update_event(priv, 1079 adapter->event_skb); 1080 break; 1081 case EVENT_RXBA_SYNC: 1082 dev_dbg(adapter->dev, "EVENT: RXBA_SYNC\n"); 1083 mwifiex_11n_rxba_sync_event(priv, adapter->event_body, 1084 adapter->event_skb->len - 1085 sizeof(eventcause)); 1086 break; 1087 case EVENT_FW_DUMP_INFO: 1088 mwifiex_dbg(adapter, EVENT, "event: firmware debug info\n"); 1089 mwifiex_fw_dump_info_event(priv, adapter->event_skb); 1090 break; 1091 /* Debugging event; not used, but let's not print an ERROR for it. */ 1092 case EVENT_UNKNOWN_DEBUG: 1093 mwifiex_dbg(adapter, EVENT, "event: debug\n"); 1094 break; 1095 default: 1096 mwifiex_dbg(adapter, ERROR, "event: unknown event id: %#x\n", 1097 eventcause); 1098 break; 1099 } 1100 1101 return ret; 1102 } 1103