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
mwifiex_check_ibss_peer_capabilities(struct mwifiex_private * priv,struct mwifiex_sta_node * sta_ptr,struct sk_buff * event)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 */
mwifiex_reset_connect_state(struct mwifiex_private * priv,u16 reason_code,bool from_ap)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->scan_block = false;
139 priv->port_open = false;
140
141 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
142 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) {
143 mwifiex_disable_all_tdls_links(priv);
144
145 if (priv->adapter->auto_tdls)
146 mwifiex_clean_auto_tdls(priv);
147 }
148
149 /* Free Tx and Rx packets, report disconnect to upper layer */
150 mwifiex_clean_txrx(priv);
151
152 /* Reset SNR/NF/RSSI values */
153 priv->data_rssi_last = 0;
154 priv->data_nf_last = 0;
155 priv->data_rssi_avg = 0;
156 priv->data_nf_avg = 0;
157 priv->bcn_rssi_last = 0;
158 priv->bcn_nf_last = 0;
159 priv->bcn_rssi_avg = 0;
160 priv->bcn_nf_avg = 0;
161 priv->rxpd_rate = 0;
162 priv->rxpd_htinfo = 0;
163 priv->sec_info.wpa_enabled = false;
164 priv->sec_info.wpa2_enabled = false;
165 priv->wpa_ie_len = 0;
166
167 priv->sec_info.wapi_enabled = false;
168 priv->wapi_ie_len = 0;
169 priv->sec_info.wapi_key_on = false;
170
171 priv->sec_info.encryption_mode = 0;
172
173 /* Enable auto data rate */
174 priv->is_data_rate_auto = true;
175 priv->data_rate = 0;
176
177 priv->assoc_resp_ht_param = 0;
178 priv->ht_param_present = false;
179
180 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
181 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) && priv->hist_data)
182 mwifiex_hist_data_reset(priv);
183
184 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
185 priv->adhoc_state = ADHOC_IDLE;
186 priv->adhoc_is_link_sensed = false;
187 }
188
189 /*
190 * Memorize the previous SSID and BSSID so
191 * it could be used for re-assoc
192 */
193
194 mwifiex_dbg(adapter, INFO,
195 "info: previous SSID=%s, SSID len=%u\n",
196 priv->prev_ssid.ssid, priv->prev_ssid.ssid_len);
197
198 mwifiex_dbg(adapter, INFO,
199 "info: current SSID=%s, SSID len=%u\n",
200 priv->curr_bss_params.bss_descriptor.ssid.ssid,
201 priv->curr_bss_params.bss_descriptor.ssid.ssid_len);
202
203 memcpy(&priv->prev_ssid,
204 &priv->curr_bss_params.bss_descriptor.ssid,
205 sizeof(struct cfg80211_ssid));
206
207 memcpy(priv->prev_bssid,
208 priv->curr_bss_params.bss_descriptor.mac_address, ETH_ALEN);
209
210 /* Need to erase the current SSID and BSSID info */
211 memset(&priv->curr_bss_params, 0x00, sizeof(priv->curr_bss_params));
212
213 adapter->tx_lock_flag = false;
214 adapter->pps_uapsd_mode = false;
215
216 if (test_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags) &&
217 adapter->curr_cmd)
218 return;
219 priv->media_connected = false;
220 mwifiex_dbg(adapter, MSG,
221 "info: successfully disconnected from %pM: reason code %d\n",
222 priv->cfg_bssid, reason_code);
223 if (priv->bss_mode == NL80211_IFTYPE_STATION ||
224 priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) {
225 cfg80211_disconnected(priv->netdev, reason_code, NULL, 0,
226 !from_ap, GFP_KERNEL);
227 }
228 eth_zero_addr(priv->cfg_bssid);
229
230 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
231 if (netif_carrier_ok(priv->netdev))
232 netif_carrier_off(priv->netdev);
233
234 if (!ISSUPP_FIRMWARE_SUPPLICANT(priv->adapter->fw_cap_info))
235 return;
236
237 mwifiex_send_cmd(priv, HostCmd_CMD_GTK_REKEY_OFFLOAD_CFG,
238 HostCmd_ACT_GEN_REMOVE, 0, NULL, false);
239 }
240
mwifiex_parse_tdls_event(struct mwifiex_private * priv,struct sk_buff * event_skb)241 static int mwifiex_parse_tdls_event(struct mwifiex_private *priv,
242 struct sk_buff *event_skb)
243 {
244 int ret = 0;
245 struct mwifiex_adapter *adapter = priv->adapter;
246 struct mwifiex_sta_node *sta_ptr;
247 struct mwifiex_tdls_generic_event *tdls_evt =
248 (void *)event_skb->data + sizeof(adapter->event_cause);
249 u8 *mac = tdls_evt->peer_mac;
250
251 /* reserved 2 bytes are not mandatory in tdls event */
252 if (event_skb->len < (sizeof(struct mwifiex_tdls_generic_event) -
253 sizeof(u16) - sizeof(adapter->event_cause))) {
254 mwifiex_dbg(adapter, ERROR, "Invalid event length!\n");
255 return -1;
256 }
257
258 sta_ptr = mwifiex_get_sta_entry(priv, tdls_evt->peer_mac);
259 if (!sta_ptr) {
260 mwifiex_dbg(adapter, ERROR, "cannot get sta entry!\n");
261 return -1;
262 }
263
264 switch (le16_to_cpu(tdls_evt->type)) {
265 case TDLS_EVENT_LINK_TEAR_DOWN:
266 cfg80211_tdls_oper_request(priv->netdev,
267 tdls_evt->peer_mac,
268 NL80211_TDLS_TEARDOWN,
269 le16_to_cpu(tdls_evt->u.reason_code),
270 GFP_KERNEL);
271 break;
272 case TDLS_EVENT_CHAN_SWITCH_RESULT:
273 mwifiex_dbg(adapter, EVENT, "tdls channel switch result :\n");
274 mwifiex_dbg(adapter, EVENT,
275 "status=0x%x, reason=0x%x cur_chan=%d\n",
276 tdls_evt->u.switch_result.status,
277 tdls_evt->u.switch_result.reason,
278 tdls_evt->u.switch_result.cur_chan);
279
280 /* tdls channel switch failed */
281 if (tdls_evt->u.switch_result.status != 0) {
282 switch (tdls_evt->u.switch_result.cur_chan) {
283 case TDLS_BASE_CHANNEL:
284 sta_ptr->tdls_status = TDLS_IN_BASE_CHAN;
285 break;
286 case TDLS_OFF_CHANNEL:
287 sta_ptr->tdls_status = TDLS_IN_OFF_CHAN;
288 break;
289 default:
290 break;
291 }
292 return ret;
293 }
294
295 /* tdls channel switch success */
296 switch (tdls_evt->u.switch_result.cur_chan) {
297 case TDLS_BASE_CHANNEL:
298 if (sta_ptr->tdls_status == TDLS_IN_BASE_CHAN)
299 break;
300 mwifiex_update_ralist_tx_pause_in_tdls_cs(priv, mac,
301 false);
302 sta_ptr->tdls_status = TDLS_IN_BASE_CHAN;
303 break;
304 case TDLS_OFF_CHANNEL:
305 if (sta_ptr->tdls_status == TDLS_IN_OFF_CHAN)
306 break;
307 mwifiex_update_ralist_tx_pause_in_tdls_cs(priv, mac,
308 true);
309 sta_ptr->tdls_status = TDLS_IN_OFF_CHAN;
310 break;
311 default:
312 break;
313 }
314
315 break;
316 case TDLS_EVENT_START_CHAN_SWITCH:
317 mwifiex_dbg(adapter, EVENT, "tdls start channel switch...\n");
318 sta_ptr->tdls_status = TDLS_CHAN_SWITCHING;
319 break;
320 case TDLS_EVENT_CHAN_SWITCH_STOPPED:
321 mwifiex_dbg(adapter, EVENT,
322 "tdls chan switch stopped, reason=%d\n",
323 tdls_evt->u.cs_stop_reason);
324 break;
325 default:
326 break;
327 }
328
329 return ret;
330 }
331
mwifiex_process_uap_tx_pause(struct mwifiex_private * priv,struct mwifiex_ie_types_header * tlv)332 static void mwifiex_process_uap_tx_pause(struct mwifiex_private *priv,
333 struct mwifiex_ie_types_header *tlv)
334 {
335 struct mwifiex_tx_pause_tlv *tp;
336 struct mwifiex_sta_node *sta_ptr;
337
338 tp = (void *)tlv;
339 mwifiex_dbg(priv->adapter, EVENT,
340 "uap tx_pause: %pM pause=%d, pkts=%d\n",
341 tp->peermac, tp->tx_pause,
342 tp->pkt_cnt);
343
344 if (ether_addr_equal(tp->peermac, priv->netdev->dev_addr)) {
345 if (tp->tx_pause)
346 priv->port_open = false;
347 else
348 priv->port_open = true;
349 } else if (is_multicast_ether_addr(tp->peermac)) {
350 mwifiex_update_ralist_tx_pause(priv, tp->peermac, tp->tx_pause);
351 } else {
352 spin_lock_bh(&priv->sta_list_spinlock);
353 sta_ptr = mwifiex_get_sta_entry(priv, tp->peermac);
354 if (sta_ptr && sta_ptr->tx_pause != tp->tx_pause) {
355 sta_ptr->tx_pause = tp->tx_pause;
356 spin_unlock_bh(&priv->sta_list_spinlock);
357 mwifiex_update_ralist_tx_pause(priv, tp->peermac,
358 tp->tx_pause);
359 } else {
360 spin_unlock_bh(&priv->sta_list_spinlock);
361 }
362 }
363 }
364
mwifiex_process_sta_tx_pause(struct mwifiex_private * priv,struct mwifiex_ie_types_header * tlv)365 static void mwifiex_process_sta_tx_pause(struct mwifiex_private *priv,
366 struct mwifiex_ie_types_header *tlv)
367 {
368 struct mwifiex_tx_pause_tlv *tp;
369 struct mwifiex_sta_node *sta_ptr;
370 int status;
371
372 tp = (void *)tlv;
373 mwifiex_dbg(priv->adapter, EVENT,
374 "sta tx_pause: %pM pause=%d, pkts=%d\n",
375 tp->peermac, tp->tx_pause,
376 tp->pkt_cnt);
377
378 if (ether_addr_equal(tp->peermac, priv->cfg_bssid)) {
379 if (tp->tx_pause)
380 priv->port_open = false;
381 else
382 priv->port_open = true;
383 } else {
384 if (!ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
385 return;
386
387 status = mwifiex_get_tdls_link_status(priv, tp->peermac);
388 if (mwifiex_is_tdls_link_setup(status)) {
389 spin_lock_bh(&priv->sta_list_spinlock);
390 sta_ptr = mwifiex_get_sta_entry(priv, tp->peermac);
391 if (sta_ptr && sta_ptr->tx_pause != tp->tx_pause) {
392 sta_ptr->tx_pause = tp->tx_pause;
393 spin_unlock_bh(&priv->sta_list_spinlock);
394 mwifiex_update_ralist_tx_pause(priv,
395 tp->peermac,
396 tp->tx_pause);
397 } else {
398 spin_unlock_bh(&priv->sta_list_spinlock);
399 }
400 }
401 }
402 }
403
mwifiex_process_multi_chan_event(struct mwifiex_private * priv,struct sk_buff * event_skb)404 void mwifiex_process_multi_chan_event(struct mwifiex_private *priv,
405 struct sk_buff *event_skb)
406 {
407 struct mwifiex_ie_types_multi_chan_info *chan_info;
408 struct mwifiex_ie_types_mc_group_info *grp_info;
409 struct mwifiex_adapter *adapter = priv->adapter;
410 struct mwifiex_ie_types_header *tlv;
411 u16 tlv_buf_left, tlv_type, tlv_len;
412 int intf_num, bss_type, bss_num, i;
413 struct mwifiex_private *intf_priv;
414
415 tlv_buf_left = event_skb->len - sizeof(u32);
416 chan_info = (void *)event_skb->data + sizeof(u32);
417
418 if (le16_to_cpu(chan_info->header.type) != TLV_TYPE_MULTI_CHAN_INFO ||
419 tlv_buf_left < sizeof(struct mwifiex_ie_types_multi_chan_info)) {
420 mwifiex_dbg(adapter, ERROR,
421 "unknown TLV in chan_info event\n");
422 return;
423 }
424
425 adapter->usb_mc_status = le16_to_cpu(chan_info->status);
426 mwifiex_dbg(adapter, EVENT, "multi chan operation %s\n",
427 adapter->usb_mc_status ? "started" : "over");
428
429 tlv_buf_left -= sizeof(struct mwifiex_ie_types_multi_chan_info);
430 tlv = (struct mwifiex_ie_types_header *)chan_info->tlv_buffer;
431
432 while (tlv_buf_left >= (int)sizeof(struct mwifiex_ie_types_header)) {
433 tlv_type = le16_to_cpu(tlv->type);
434 tlv_len = le16_to_cpu(tlv->len);
435 if ((sizeof(struct mwifiex_ie_types_header) + tlv_len) >
436 tlv_buf_left) {
437 mwifiex_dbg(adapter, ERROR, "wrong tlv: tlvLen=%d,\t"
438 "tlvBufLeft=%d\n", tlv_len, tlv_buf_left);
439 break;
440 }
441 if (tlv_type != TLV_TYPE_MC_GROUP_INFO) {
442 mwifiex_dbg(adapter, ERROR, "wrong tlv type: 0x%x\n",
443 tlv_type);
444 break;
445 }
446
447 grp_info = (struct mwifiex_ie_types_mc_group_info *)tlv;
448 intf_num = grp_info->intf_num;
449 for (i = 0; i < intf_num; i++) {
450 bss_type = grp_info->bss_type_numlist[i] >> 4;
451 bss_num = grp_info->bss_type_numlist[i] & BSS_NUM_MASK;
452 intf_priv = mwifiex_get_priv_by_id(adapter, bss_num,
453 bss_type);
454 if (!intf_priv) {
455 mwifiex_dbg(adapter, ERROR,
456 "Invalid bss_type bss_num\t"
457 "in multi channel event\n");
458 continue;
459 }
460 if (adapter->iface_type == MWIFIEX_USB) {
461 u8 ep;
462
463 ep = grp_info->hid_num.usb_ep_num;
464 if (ep == MWIFIEX_USB_EP_DATA ||
465 ep == MWIFIEX_USB_EP_DATA_CH2)
466 intf_priv->usb_port = ep;
467 }
468 }
469
470 tlv_buf_left -= sizeof(struct mwifiex_ie_types_header) +
471 tlv_len;
472 tlv = (void *)((u8 *)tlv + tlv_len +
473 sizeof(struct mwifiex_ie_types_header));
474 }
475
476 if (adapter->iface_type == MWIFIEX_USB) {
477 adapter->tx_lock_flag = true;
478 adapter->usb_mc_setup = true;
479 mwifiex_multi_chan_resync(adapter);
480 }
481 }
482
mwifiex_process_tx_pause_event(struct mwifiex_private * priv,struct sk_buff * event_skb)483 void mwifiex_process_tx_pause_event(struct mwifiex_private *priv,
484 struct sk_buff *event_skb)
485 {
486 struct mwifiex_ie_types_header *tlv;
487 u16 tlv_type, tlv_len;
488 int tlv_buf_left;
489
490 if (!priv->media_connected) {
491 mwifiex_dbg(priv->adapter, ERROR,
492 "tx_pause event while disconnected; bss_role=%d\n",
493 priv->bss_role);
494 return;
495 }
496
497 tlv_buf_left = event_skb->len - sizeof(u32);
498 tlv = (void *)event_skb->data + sizeof(u32);
499
500 while (tlv_buf_left >= (int)sizeof(struct mwifiex_ie_types_header)) {
501 tlv_type = le16_to_cpu(tlv->type);
502 tlv_len = le16_to_cpu(tlv->len);
503 if ((sizeof(struct mwifiex_ie_types_header) + tlv_len) >
504 tlv_buf_left) {
505 mwifiex_dbg(priv->adapter, ERROR,
506 "wrong tlv: tlvLen=%d, tlvBufLeft=%d\n",
507 tlv_len, tlv_buf_left);
508 break;
509 }
510 if (tlv_type == TLV_TYPE_TX_PAUSE) {
511 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA)
512 mwifiex_process_sta_tx_pause(priv, tlv);
513 else
514 mwifiex_process_uap_tx_pause(priv, tlv);
515 }
516
517 tlv_buf_left -= sizeof(struct mwifiex_ie_types_header) +
518 tlv_len;
519 tlv = (void *)((u8 *)tlv + tlv_len +
520 sizeof(struct mwifiex_ie_types_header));
521 }
522
523 }
524
525 /*
526 * This function handles coex events generated by firmware
527 */
mwifiex_bt_coex_wlan_param_update_event(struct mwifiex_private * priv,struct sk_buff * event_skb)528 void mwifiex_bt_coex_wlan_param_update_event(struct mwifiex_private *priv,
529 struct sk_buff *event_skb)
530 {
531 struct mwifiex_adapter *adapter = priv->adapter;
532 struct mwifiex_ie_types_header *tlv;
533 struct mwifiex_ie_types_btcoex_aggr_win_size *winsizetlv;
534 struct mwifiex_ie_types_btcoex_scan_time *scantlv;
535 s32 len = event_skb->len - sizeof(u32);
536 u8 *cur_ptr = event_skb->data + sizeof(u32);
537 u16 tlv_type, tlv_len;
538
539 while (len >= sizeof(struct mwifiex_ie_types_header)) {
540 tlv = (struct mwifiex_ie_types_header *)cur_ptr;
541 tlv_len = le16_to_cpu(tlv->len);
542 tlv_type = le16_to_cpu(tlv->type);
543
544 if ((tlv_len + sizeof(struct mwifiex_ie_types_header)) > len)
545 break;
546 switch (tlv_type) {
547 case TLV_BTCOEX_WL_AGGR_WINSIZE:
548 winsizetlv =
549 (struct mwifiex_ie_types_btcoex_aggr_win_size *)tlv;
550 adapter->coex_win_size = winsizetlv->coex_win_size;
551 adapter->coex_tx_win_size =
552 winsizetlv->tx_win_size;
553 adapter->coex_rx_win_size =
554 winsizetlv->rx_win_size;
555 mwifiex_coex_ampdu_rxwinsize(adapter);
556 mwifiex_update_ampdu_txwinsize(adapter);
557 break;
558
559 case TLV_BTCOEX_WL_SCANTIME:
560 scantlv =
561 (struct mwifiex_ie_types_btcoex_scan_time *)tlv;
562 adapter->coex_scan = scantlv->coex_scan;
563 adapter->coex_min_scan_time = le16_to_cpu(scantlv->min_scan_time);
564 adapter->coex_max_scan_time = le16_to_cpu(scantlv->max_scan_time);
565 break;
566
567 default:
568 break;
569 }
570
571 len -= tlv_len + sizeof(struct mwifiex_ie_types_header);
572 cur_ptr += tlv_len +
573 sizeof(struct mwifiex_ie_types_header);
574 }
575
576 dev_dbg(adapter->dev, "coex_scan=%d min_scan=%d coex_win=%d, tx_win=%d rx_win=%d\n",
577 adapter->coex_scan, adapter->coex_min_scan_time,
578 adapter->coex_win_size, adapter->coex_tx_win_size,
579 adapter->coex_rx_win_size);
580 }
581
582 static void
mwifiex_fw_dump_info_event(struct mwifiex_private * priv,struct sk_buff * event_skb)583 mwifiex_fw_dump_info_event(struct mwifiex_private *priv,
584 struct sk_buff *event_skb)
585 {
586 struct mwifiex_adapter *adapter = priv->adapter;
587 struct mwifiex_fw_dump_header *fw_dump_hdr =
588 (void *)adapter->event_body;
589
590 if (adapter->iface_type != MWIFIEX_USB) {
591 mwifiex_dbg(adapter, MSG,
592 "event is not on usb interface, ignore it\n");
593 return;
594 }
595
596 if (!adapter->devdump_data) {
597 /* When receive the first event, allocate device dump
598 * buffer, dump driver info.
599 */
600 adapter->devdump_data = vzalloc(MWIFIEX_FW_DUMP_SIZE);
601 if (!adapter->devdump_data) {
602 mwifiex_dbg(adapter, ERROR,
603 "vzalloc devdump data failure!\n");
604 return;
605 }
606
607 mwifiex_drv_info_dump(adapter);
608
609 /* If no proceeded event arrive in 10s, upload device
610 * dump data, this will be useful if the end of
611 * transmission event get lost, in this cornel case,
612 * user would still get partial of the dump.
613 */
614 schedule_delayed_work(&adapter->devdump_work,
615 msecs_to_jiffies(MWIFIEX_TIMER_10S));
616 }
617
618 /* Overflow check */
619 if (adapter->devdump_len + event_skb->len >= MWIFIEX_FW_DUMP_SIZE)
620 goto upload_dump;
621
622 memmove(adapter->devdump_data + adapter->devdump_len,
623 adapter->event_skb->data, event_skb->len);
624 adapter->devdump_len += event_skb->len;
625
626 if (le16_to_cpu(fw_dump_hdr->type) == FW_DUMP_INFO_ENDED) {
627 mwifiex_dbg(adapter, MSG,
628 "receive end of transmission flag event!\n");
629 goto upload_dump;
630 }
631 return;
632
633 upload_dump:
634 cancel_delayed_work_sync(&adapter->devdump_work);
635 mwifiex_upload_device_dump(adapter);
636 }
637
638 /*
639 * This function handles events generated by firmware.
640 *
641 * This is a generic function and handles all events.
642 *
643 * Event specific routines are called by this function based
644 * upon the generated event cause.
645 *
646 * For the following events, the function just forwards them to upper
647 * layers, optionally recording the change -
648 * - EVENT_LINK_SENSED
649 * - EVENT_MIC_ERR_UNICAST
650 * - EVENT_MIC_ERR_MULTICAST
651 * - EVENT_PORT_RELEASE
652 * - EVENT_RSSI_LOW
653 * - EVENT_SNR_LOW
654 * - EVENT_MAX_FAIL
655 * - EVENT_RSSI_HIGH
656 * - EVENT_SNR_HIGH
657 * - EVENT_DATA_RSSI_LOW
658 * - EVENT_DATA_SNR_LOW
659 * - EVENT_DATA_RSSI_HIGH
660 * - EVENT_DATA_SNR_HIGH
661 * - EVENT_LINK_QUALITY
662 * - EVENT_PRE_BEACON_LOST
663 * - EVENT_IBSS_COALESCED
664 * - EVENT_IBSS_STA_CONNECT
665 * - EVENT_IBSS_STA_DISCONNECT
666 * - EVENT_WEP_ICV_ERR
667 * - EVENT_BW_CHANGE
668 * - EVENT_HOSTWAKE_STAIE
669 *
670 * For the following events, no action is taken -
671 * - EVENT_MIB_CHANGED
672 * - EVENT_INIT_DONE
673 * - EVENT_DUMMY_HOST_WAKEUP_SIGNAL
674 *
675 * Rest of the supported events requires driver handling -
676 * - EVENT_DEAUTHENTICATED
677 * - EVENT_DISASSOCIATED
678 * - EVENT_LINK_LOST
679 * - EVENT_PS_SLEEP
680 * - EVENT_PS_AWAKE
681 * - EVENT_DEEP_SLEEP_AWAKE
682 * - EVENT_HS_ACT_REQ
683 * - EVENT_ADHOC_BCN_LOST
684 * - EVENT_BG_SCAN_REPORT
685 * - EVENT_WMM_STATUS_CHANGE
686 * - EVENT_ADDBA
687 * - EVENT_DELBA
688 * - EVENT_BA_STREAM_TIEMOUT
689 * - EVENT_AMSDU_AGGR_CTRL
690 * - EVENT_FW_DUMP_INFO
691 */
mwifiex_process_sta_event(struct mwifiex_private * priv)692 int mwifiex_process_sta_event(struct mwifiex_private *priv)
693 {
694 struct mwifiex_adapter *adapter = priv->adapter;
695 int ret = 0, i;
696 u32 eventcause = adapter->event_cause;
697 u16 ctrl, reason_code;
698 u8 ibss_sta_addr[ETH_ALEN];
699 struct mwifiex_sta_node *sta_ptr;
700
701 switch (eventcause) {
702 case EVENT_DUMMY_HOST_WAKEUP_SIGNAL:
703 mwifiex_dbg(adapter, ERROR,
704 "invalid EVENT: DUMMY_HOST_WAKEUP_SIGNAL, ignore it\n");
705 break;
706 case EVENT_LINK_SENSED:
707 mwifiex_dbg(adapter, EVENT, "event: LINK_SENSED\n");
708 if (!netif_carrier_ok(priv->netdev))
709 netif_carrier_on(priv->netdev);
710 mwifiex_wake_up_net_dev_queue(priv->netdev, adapter);
711 break;
712
713 case EVENT_DEAUTHENTICATED:
714 mwifiex_dbg(adapter, EVENT, "event: Deauthenticated\n");
715 if (priv->wps.session_enable) {
716 mwifiex_dbg(adapter, INFO,
717 "info: receive deauth event in wps session\n");
718 break;
719 }
720 adapter->dbg.num_event_deauth++;
721 if (priv->media_connected) {
722 reason_code =
723 get_unaligned_le16(adapter->event_body);
724 mwifiex_reset_connect_state(priv, reason_code, true);
725 }
726 break;
727
728 case EVENT_DISASSOCIATED:
729 mwifiex_dbg(adapter, EVENT, "event: Disassociated\n");
730 if (priv->wps.session_enable) {
731 mwifiex_dbg(adapter, INFO,
732 "info: receive disassoc event in wps session\n");
733 break;
734 }
735 adapter->dbg.num_event_disassoc++;
736 if (priv->media_connected) {
737 reason_code =
738 get_unaligned_le16(adapter->event_body);
739 mwifiex_reset_connect_state(priv, reason_code, true);
740 }
741 break;
742
743 case EVENT_LINK_LOST:
744 mwifiex_dbg(adapter, EVENT, "event: Link lost\n");
745 adapter->dbg.num_event_link_lost++;
746 if (priv->media_connected) {
747 reason_code =
748 get_unaligned_le16(adapter->event_body);
749 mwifiex_reset_connect_state(priv, reason_code, true);
750 }
751 break;
752
753 case EVENT_PS_SLEEP:
754 mwifiex_dbg(adapter, EVENT, "info: EVENT: SLEEP\n");
755
756 adapter->ps_state = PS_STATE_PRE_SLEEP;
757
758 mwifiex_check_ps_cond(adapter);
759 break;
760
761 case EVENT_PS_AWAKE:
762 mwifiex_dbg(adapter, EVENT, "info: EVENT: AWAKE\n");
763 if (!adapter->pps_uapsd_mode &&
764 (priv->port_open ||
765 (priv->bss_mode == NL80211_IFTYPE_ADHOC)) &&
766 priv->media_connected && adapter->sleep_period.period) {
767 adapter->pps_uapsd_mode = true;
768 mwifiex_dbg(adapter, EVENT,
769 "event: PPS/UAPSD mode activated\n");
770 }
771 adapter->tx_lock_flag = false;
772 if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) {
773 if (mwifiex_check_last_packet_indication(priv)) {
774 if (adapter->data_sent ||
775 (adapter->if_ops.is_port_ready &&
776 !adapter->if_ops.is_port_ready(priv))) {
777 adapter->ps_state = PS_STATE_AWAKE;
778 adapter->pm_wakeup_card_req = false;
779 adapter->pm_wakeup_fw_try = false;
780 del_timer(&adapter->wakeup_timer);
781 break;
782 }
783 if (!mwifiex_send_null_packet
784 (priv,
785 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
786 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET))
787 adapter->ps_state =
788 PS_STATE_SLEEP;
789 return 0;
790 }
791 }
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
797 break;
798
799 case EVENT_DEEP_SLEEP_AWAKE:
800 adapter->if_ops.wakeup_complete(adapter);
801 mwifiex_dbg(adapter, EVENT, "event: DS_AWAKE\n");
802 if (adapter->is_deep_sleep)
803 adapter->is_deep_sleep = false;
804 break;
805
806 case EVENT_HS_ACT_REQ:
807 mwifiex_dbg(adapter, EVENT, "event: HS_ACT_REQ\n");
808 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_HS_CFG_ENH,
809 0, 0, NULL, false);
810 break;
811
812 case EVENT_MIC_ERR_UNICAST:
813 mwifiex_dbg(adapter, EVENT, "event: UNICAST MIC ERROR\n");
814 cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid,
815 NL80211_KEYTYPE_PAIRWISE,
816 -1, NULL, GFP_KERNEL);
817 break;
818
819 case EVENT_MIC_ERR_MULTICAST:
820 mwifiex_dbg(adapter, EVENT, "event: MULTICAST MIC ERROR\n");
821 cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid,
822 NL80211_KEYTYPE_GROUP,
823 -1, NULL, GFP_KERNEL);
824 break;
825 case EVENT_MIB_CHANGED:
826 case EVENT_INIT_DONE:
827 break;
828
829 case EVENT_ADHOC_BCN_LOST:
830 mwifiex_dbg(adapter, EVENT, "event: ADHOC_BCN_LOST\n");
831 priv->adhoc_is_link_sensed = false;
832 mwifiex_clean_txrx(priv);
833 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
834 if (netif_carrier_ok(priv->netdev))
835 netif_carrier_off(priv->netdev);
836 break;
837
838 case EVENT_BG_SCAN_REPORT:
839 mwifiex_dbg(adapter, EVENT, "event: BGS_REPORT\n");
840 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_BG_SCAN_QUERY,
841 HostCmd_ACT_GEN_GET, 0, NULL, false);
842 break;
843
844 case EVENT_BG_SCAN_STOPPED:
845 dev_dbg(adapter->dev, "event: BGS_STOPPED\n");
846 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
847 if (priv->sched_scanning)
848 priv->sched_scanning = false;
849 break;
850
851 case EVENT_PORT_RELEASE:
852 mwifiex_dbg(adapter, EVENT, "event: PORT RELEASE\n");
853 priv->port_open = true;
854 break;
855
856 case EVENT_EXT_SCAN_REPORT:
857 mwifiex_dbg(adapter, EVENT, "event: EXT_SCAN Report\n");
858 /* We intend to skip this event during suspend, but handle
859 * it in interface disabled case
860 */
861 if (adapter->ext_scan && (!priv->scan_aborting ||
862 !netif_running(priv->netdev)))
863 ret = mwifiex_handle_event_ext_scan_report(priv,
864 adapter->event_skb->data);
865
866 break;
867
868 case EVENT_WMM_STATUS_CHANGE:
869 mwifiex_dbg(adapter, EVENT, "event: WMM status changed\n");
870 ret = mwifiex_send_cmd(priv, HostCmd_CMD_WMM_GET_STATUS,
871 0, 0, NULL, false);
872 break;
873
874 case EVENT_RSSI_LOW:
875 cfg80211_cqm_rssi_notify(priv->netdev,
876 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
877 0, GFP_KERNEL);
878 mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO,
879 HostCmd_ACT_GEN_GET, 0, NULL, false);
880 priv->subsc_evt_rssi_state = RSSI_LOW_RECVD;
881 mwifiex_dbg(adapter, EVENT, "event: Beacon RSSI_LOW\n");
882 break;
883 case EVENT_SNR_LOW:
884 mwifiex_dbg(adapter, EVENT, "event: Beacon SNR_LOW\n");
885 break;
886 case EVENT_MAX_FAIL:
887 mwifiex_dbg(adapter, EVENT, "event: MAX_FAIL\n");
888 break;
889 case EVENT_RSSI_HIGH:
890 cfg80211_cqm_rssi_notify(priv->netdev,
891 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
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_HIGH_RECVD;
896 mwifiex_dbg(adapter, EVENT, "event: Beacon RSSI_HIGH\n");
897 break;
898 case EVENT_SNR_HIGH:
899 mwifiex_dbg(adapter, EVENT, "event: Beacon SNR_HIGH\n");
900 break;
901 case EVENT_DATA_RSSI_LOW:
902 mwifiex_dbg(adapter, EVENT, "event: Data RSSI_LOW\n");
903 break;
904 case EVENT_DATA_SNR_LOW:
905 mwifiex_dbg(adapter, EVENT, "event: Data SNR_LOW\n");
906 break;
907 case EVENT_DATA_RSSI_HIGH:
908 mwifiex_dbg(adapter, EVENT, "event: Data RSSI_HIGH\n");
909 break;
910 case EVENT_DATA_SNR_HIGH:
911 mwifiex_dbg(adapter, EVENT, "event: Data SNR_HIGH\n");
912 break;
913 case EVENT_LINK_QUALITY:
914 mwifiex_dbg(adapter, EVENT, "event: Link Quality\n");
915 break;
916 case EVENT_PRE_BEACON_LOST:
917 mwifiex_dbg(adapter, EVENT, "event: Pre-Beacon Lost\n");
918 break;
919 case EVENT_IBSS_COALESCED:
920 mwifiex_dbg(adapter, EVENT, "event: IBSS_COALESCED\n");
921 ret = mwifiex_send_cmd(priv,
922 HostCmd_CMD_802_11_IBSS_COALESCING_STATUS,
923 HostCmd_ACT_GEN_GET, 0, NULL, false);
924 break;
925 case EVENT_IBSS_STA_CONNECT:
926 ether_addr_copy(ibss_sta_addr, adapter->event_body + 2);
927 mwifiex_dbg(adapter, EVENT, "event: IBSS_STA_CONNECT %pM\n",
928 ibss_sta_addr);
929 sta_ptr = mwifiex_add_sta_entry(priv, ibss_sta_addr);
930 if (sta_ptr && adapter->adhoc_11n_enabled) {
931 mwifiex_check_ibss_peer_capabilities(priv, sta_ptr,
932 adapter->event_skb);
933 if (sta_ptr->is_11n_enabled)
934 for (i = 0; i < MAX_NUM_TID; i++)
935 sta_ptr->ampdu_sta[i] =
936 priv->aggr_prio_tbl[i].ampdu_user;
937 else
938 for (i = 0; i < MAX_NUM_TID; i++)
939 sta_ptr->ampdu_sta[i] =
940 BA_STREAM_NOT_ALLOWED;
941 memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq));
942 }
943
944 break;
945 case EVENT_IBSS_STA_DISCONNECT:
946 ether_addr_copy(ibss_sta_addr, adapter->event_body + 2);
947 mwifiex_dbg(adapter, EVENT, "event: IBSS_STA_DISCONNECT %pM\n",
948 ibss_sta_addr);
949 sta_ptr = mwifiex_get_sta_entry(priv, ibss_sta_addr);
950 if (sta_ptr && sta_ptr->is_11n_enabled) {
951 mwifiex_11n_del_rx_reorder_tbl_by_ta(priv,
952 ibss_sta_addr);
953 mwifiex_del_tx_ba_stream_tbl_by_ra(priv, ibss_sta_addr);
954 }
955 mwifiex_wmm_del_peer_ra_list(priv, ibss_sta_addr);
956 mwifiex_del_sta_entry(priv, ibss_sta_addr);
957 break;
958 case EVENT_ADDBA:
959 mwifiex_dbg(adapter, EVENT, "event: ADDBA Request\n");
960 mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP,
961 HostCmd_ACT_GEN_SET, 0,
962 adapter->event_body, false);
963 break;
964 case EVENT_DELBA:
965 mwifiex_dbg(adapter, EVENT, "event: DELBA Request\n");
966 mwifiex_11n_delete_ba_stream(priv, adapter->event_body);
967 break;
968 case EVENT_BA_STREAM_TIEMOUT:
969 mwifiex_dbg(adapter, EVENT, "event: BA Stream timeout\n");
970 mwifiex_11n_ba_stream_timeout(priv,
971 (struct host_cmd_ds_11n_batimeout
972 *)
973 adapter->event_body);
974 break;
975 case EVENT_AMSDU_AGGR_CTRL:
976 ctrl = get_unaligned_le16(adapter->event_body);
977 mwifiex_dbg(adapter, EVENT,
978 "event: AMSDU_AGGR_CTRL %d\n", ctrl);
979
980 adapter->tx_buf_size =
981 min_t(u16, adapter->curr_tx_buf_size, ctrl);
982 mwifiex_dbg(adapter, EVENT, "event: tx_buf_size %d\n",
983 adapter->tx_buf_size);
984 break;
985
986 case EVENT_WEP_ICV_ERR:
987 mwifiex_dbg(adapter, EVENT, "event: WEP ICV error\n");
988 break;
989
990 case EVENT_BW_CHANGE:
991 mwifiex_dbg(adapter, EVENT, "event: BW Change\n");
992 break;
993
994 case EVENT_HOSTWAKE_STAIE:
995 mwifiex_dbg(adapter, EVENT,
996 "event: HOSTWAKE_STAIE %d\n", eventcause);
997 break;
998
999 case EVENT_REMAIN_ON_CHAN_EXPIRED:
1000 mwifiex_dbg(adapter, EVENT,
1001 "event: Remain on channel expired\n");
1002 cfg80211_remain_on_channel_expired(&priv->wdev,
1003 priv->roc_cfg.cookie,
1004 &priv->roc_cfg.chan,
1005 GFP_ATOMIC);
1006
1007 memset(&priv->roc_cfg, 0x00, sizeof(struct mwifiex_roc_cfg));
1008
1009 break;
1010
1011 case EVENT_CHANNEL_SWITCH_ANN:
1012 mwifiex_dbg(adapter, EVENT, "event: Channel Switch Announcement\n");
1013 priv->csa_expire_time =
1014 jiffies + msecs_to_jiffies(DFS_CHAN_MOVE_TIME);
1015 priv->csa_chan = priv->curr_bss_params.bss_descriptor.channel;
1016 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_DEAUTHENTICATE,
1017 HostCmd_ACT_GEN_SET, 0,
1018 priv->curr_bss_params.bss_descriptor.mac_address,
1019 false);
1020 break;
1021
1022 case EVENT_TDLS_GENERIC_EVENT:
1023 ret = mwifiex_parse_tdls_event(priv, adapter->event_skb);
1024 break;
1025
1026 case EVENT_TX_DATA_PAUSE:
1027 mwifiex_dbg(adapter, EVENT, "event: TX DATA PAUSE\n");
1028 mwifiex_process_tx_pause_event(priv, adapter->event_skb);
1029 break;
1030
1031 case EVENT_MULTI_CHAN_INFO:
1032 mwifiex_dbg(adapter, EVENT, "event: multi-chan info\n");
1033 mwifiex_process_multi_chan_event(priv, adapter->event_skb);
1034 break;
1035
1036 case EVENT_TX_STATUS_REPORT:
1037 mwifiex_dbg(adapter, EVENT, "event: TX_STATUS Report\n");
1038 mwifiex_parse_tx_status_event(priv, adapter->event_body);
1039 break;
1040
1041 case EVENT_CHANNEL_REPORT_RDY:
1042 mwifiex_dbg(adapter, EVENT, "event: Channel Report\n");
1043 ret = mwifiex_11h_handle_chanrpt_ready(priv,
1044 adapter->event_skb);
1045 break;
1046 case EVENT_RADAR_DETECTED:
1047 mwifiex_dbg(adapter, EVENT, "event: Radar detected\n");
1048 ret = mwifiex_11h_handle_radar_detected(priv,
1049 adapter->event_skb);
1050 break;
1051 case EVENT_BT_COEX_WLAN_PARA_CHANGE:
1052 dev_dbg(adapter->dev, "EVENT: BT coex wlan param update\n");
1053 if (adapter->ignore_btcoex_events)
1054 break;
1055
1056 mwifiex_bt_coex_wlan_param_update_event(priv,
1057 adapter->event_skb);
1058 break;
1059 case EVENT_RXBA_SYNC:
1060 dev_dbg(adapter->dev, "EVENT: RXBA_SYNC\n");
1061 mwifiex_11n_rxba_sync_event(priv, adapter->event_body,
1062 adapter->event_skb->len -
1063 sizeof(eventcause));
1064 break;
1065 case EVENT_FW_DUMP_INFO:
1066 mwifiex_dbg(adapter, EVENT, "event: firmware debug info\n");
1067 mwifiex_fw_dump_info_event(priv, adapter->event_skb);
1068 break;
1069 /* Debugging event; not used, but let's not print an ERROR for it. */
1070 case EVENT_UNKNOWN_DEBUG:
1071 mwifiex_dbg(adapter, EVENT, "event: debug\n");
1072 break;
1073 default:
1074 mwifiex_dbg(adapter, ERROR, "event: unknown event id: %#x\n",
1075 eventcause);
1076 break;
1077 }
1078
1079 return ret;
1080 }
1081