1 /*
2 * NXP Wireless LAN device driver: station event handling
3 *
4 * Copyright 2011-2020 NXP
5 *
6 * This software file (the "File") is distributed by NXP
7 * 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
mwifiex_check_ibss_peer_capabilities(struct mwifiex_private * priv,struct mwifiex_sta_node * sta_ptr,struct sk_buff * event)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 break;
103 default:
104 break;
105 }
106
107 mwifiex_dbg(priv->adapter, INFO,
108 "11ac enabled!, max_amsdu : %d\n",
109 sta_ptr->max_amsdu);
110 break;
111 default:
112 break;
113 }
114
115 curr += (ele_len + sizeof(*ele_hdr));
116 evt_len -= (ele_len + sizeof(*ele_hdr));
117 }
118
119 return 0;
120 }
121
122 /*
123 * This function resets the connection state.
124 *
125 * The function is invoked after receiving a disconnect event from firmware,
126 * and performs the following actions -
127 * - Set media status to disconnected
128 * - Clean up Tx and Rx packets
129 * - Resets SNR/NF/RSSI value in driver
130 * - Resets security configurations in driver
131 * - Enables auto data rate
132 * - Saves the previous SSID and BSSID so that they can
133 * be used for re-association, if required
134 * - Erases current SSID and BSSID information
135 * - Sends a disconnect event to upper layers/applications.
136 */
mwifiex_reset_connect_state(struct mwifiex_private * priv,u16 reason_code,bool from_ap)137 void mwifiex_reset_connect_state(struct mwifiex_private *priv, u16 reason_code,
138 bool from_ap)
139 {
140 struct mwifiex_adapter *adapter = priv->adapter;
141
142 if (!priv->media_connected)
143 return;
144
145 mwifiex_dbg(adapter, INFO,
146 "info: handles disconnect event\n");
147
148 priv->media_connected = false;
149
150 priv->scan_block = false;
151 priv->port_open = false;
152
153 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
154 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) {
155 mwifiex_disable_all_tdls_links(priv);
156
157 if (priv->adapter->auto_tdls)
158 mwifiex_clean_auto_tdls(priv);
159 }
160
161 /* Free Tx and Rx packets, report disconnect to upper layer */
162 mwifiex_clean_txrx(priv);
163
164 /* Reset SNR/NF/RSSI values */
165 priv->data_rssi_last = 0;
166 priv->data_nf_last = 0;
167 priv->data_rssi_avg = 0;
168 priv->data_nf_avg = 0;
169 priv->bcn_rssi_last = 0;
170 priv->bcn_nf_last = 0;
171 priv->bcn_rssi_avg = 0;
172 priv->bcn_nf_avg = 0;
173 priv->rxpd_rate = 0;
174 priv->rxpd_htinfo = 0;
175 priv->sec_info.wpa_enabled = false;
176 priv->sec_info.wpa2_enabled = false;
177 priv->wpa_ie_len = 0;
178
179 priv->sec_info.wapi_enabled = false;
180 priv->wapi_ie_len = 0;
181 priv->sec_info.wapi_key_on = false;
182
183 priv->sec_info.encryption_mode = 0;
184
185 /* Enable auto data rate */
186 priv->is_data_rate_auto = true;
187 priv->data_rate = 0;
188
189 priv->assoc_resp_ht_param = 0;
190 priv->ht_param_present = false;
191
192 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
193 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) && priv->hist_data)
194 mwifiex_hist_data_reset(priv);
195
196 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
197 priv->adhoc_state = ADHOC_IDLE;
198 priv->adhoc_is_link_sensed = false;
199 }
200
201 /*
202 * Memorize the previous SSID and BSSID so
203 * it could be used for re-assoc
204 */
205
206 mwifiex_dbg(adapter, INFO,
207 "info: previous SSID=%s, SSID len=%u\n",
208 priv->prev_ssid.ssid, priv->prev_ssid.ssid_len);
209
210 mwifiex_dbg(adapter, INFO,
211 "info: current SSID=%s, SSID len=%u\n",
212 priv->curr_bss_params.bss_descriptor.ssid.ssid,
213 priv->curr_bss_params.bss_descriptor.ssid.ssid_len);
214
215 memcpy(&priv->prev_ssid,
216 &priv->curr_bss_params.bss_descriptor.ssid,
217 sizeof(struct cfg80211_ssid));
218
219 memcpy(priv->prev_bssid,
220 priv->curr_bss_params.bss_descriptor.mac_address, ETH_ALEN);
221
222 /* Need to erase the current SSID and BSSID info */
223 memset(&priv->curr_bss_params, 0x00, sizeof(priv->curr_bss_params));
224
225 adapter->tx_lock_flag = false;
226 adapter->pps_uapsd_mode = false;
227
228 if (test_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags) &&
229 adapter->curr_cmd)
230 return;
231 priv->media_connected = false;
232 mwifiex_dbg(adapter, MSG,
233 "info: successfully disconnected from %pM: reason code %d\n",
234 priv->cfg_bssid, reason_code);
235 if (priv->bss_mode == NL80211_IFTYPE_STATION ||
236 priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) {
237 cfg80211_disconnected(priv->netdev, reason_code, NULL, 0,
238 !from_ap, GFP_KERNEL);
239 }
240 eth_zero_addr(priv->cfg_bssid);
241
242 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
243 if (netif_carrier_ok(priv->netdev))
244 netif_carrier_off(priv->netdev);
245
246 if (!ISSUPP_FIRMWARE_SUPPLICANT(priv->adapter->fw_cap_info))
247 return;
248
249 mwifiex_send_cmd(priv, HostCmd_CMD_GTK_REKEY_OFFLOAD_CFG,
250 HostCmd_ACT_GEN_REMOVE, 0, NULL, false);
251 }
252
mwifiex_parse_tdls_event(struct mwifiex_private * priv,struct sk_buff * event_skb)253 static int mwifiex_parse_tdls_event(struct mwifiex_private *priv,
254 struct sk_buff *event_skb)
255 {
256 int ret = 0;
257 struct mwifiex_adapter *adapter = priv->adapter;
258 struct mwifiex_sta_node *sta_ptr;
259 struct mwifiex_tdls_generic_event *tdls_evt =
260 (void *)event_skb->data + sizeof(adapter->event_cause);
261 u8 *mac = tdls_evt->peer_mac;
262
263 /* reserved 2 bytes are not mandatory in tdls event */
264 if (event_skb->len < (sizeof(struct mwifiex_tdls_generic_event) -
265 sizeof(u16) - sizeof(adapter->event_cause))) {
266 mwifiex_dbg(adapter, ERROR, "Invalid event length!\n");
267 return -1;
268 }
269
270 sta_ptr = mwifiex_get_sta_entry(priv, tdls_evt->peer_mac);
271 if (!sta_ptr) {
272 mwifiex_dbg(adapter, ERROR, "cannot get sta entry!\n");
273 return -1;
274 }
275
276 switch (le16_to_cpu(tdls_evt->type)) {
277 case TDLS_EVENT_LINK_TEAR_DOWN:
278 cfg80211_tdls_oper_request(priv->netdev,
279 tdls_evt->peer_mac,
280 NL80211_TDLS_TEARDOWN,
281 le16_to_cpu(tdls_evt->u.reason_code),
282 GFP_KERNEL);
283 break;
284 case TDLS_EVENT_CHAN_SWITCH_RESULT:
285 mwifiex_dbg(adapter, EVENT, "tdls channel switch result :\n");
286 mwifiex_dbg(adapter, EVENT,
287 "status=0x%x, reason=0x%x cur_chan=%d\n",
288 tdls_evt->u.switch_result.status,
289 tdls_evt->u.switch_result.reason,
290 tdls_evt->u.switch_result.cur_chan);
291
292 /* tdls channel switch failed */
293 if (tdls_evt->u.switch_result.status != 0) {
294 switch (tdls_evt->u.switch_result.cur_chan) {
295 case TDLS_BASE_CHANNEL:
296 sta_ptr->tdls_status = TDLS_IN_BASE_CHAN;
297 break;
298 case TDLS_OFF_CHANNEL:
299 sta_ptr->tdls_status = TDLS_IN_OFF_CHAN;
300 break;
301 default:
302 break;
303 }
304 return ret;
305 }
306
307 /* tdls channel switch success */
308 switch (tdls_evt->u.switch_result.cur_chan) {
309 case TDLS_BASE_CHANNEL:
310 if (sta_ptr->tdls_status == TDLS_IN_BASE_CHAN)
311 break;
312 mwifiex_update_ralist_tx_pause_in_tdls_cs(priv, mac,
313 false);
314 sta_ptr->tdls_status = TDLS_IN_BASE_CHAN;
315 break;
316 case TDLS_OFF_CHANNEL:
317 if (sta_ptr->tdls_status == TDLS_IN_OFF_CHAN)
318 break;
319 mwifiex_update_ralist_tx_pause_in_tdls_cs(priv, mac,
320 true);
321 sta_ptr->tdls_status = TDLS_IN_OFF_CHAN;
322 break;
323 default:
324 break;
325 }
326
327 break;
328 case TDLS_EVENT_START_CHAN_SWITCH:
329 mwifiex_dbg(adapter, EVENT, "tdls start channel switch...\n");
330 sta_ptr->tdls_status = TDLS_CHAN_SWITCHING;
331 break;
332 case TDLS_EVENT_CHAN_SWITCH_STOPPED:
333 mwifiex_dbg(adapter, EVENT,
334 "tdls chan switch stopped, reason=%d\n",
335 tdls_evt->u.cs_stop_reason);
336 break;
337 default:
338 break;
339 }
340
341 return ret;
342 }
343
mwifiex_process_uap_tx_pause(struct mwifiex_private * priv,struct mwifiex_ie_types_header * tlv)344 static void mwifiex_process_uap_tx_pause(struct mwifiex_private *priv,
345 struct mwifiex_ie_types_header *tlv)
346 {
347 struct mwifiex_tx_pause_tlv *tp;
348 struct mwifiex_sta_node *sta_ptr;
349
350 tp = (void *)tlv;
351 mwifiex_dbg(priv->adapter, EVENT,
352 "uap tx_pause: %pM pause=%d, pkts=%d\n",
353 tp->peermac, tp->tx_pause,
354 tp->pkt_cnt);
355
356 if (ether_addr_equal(tp->peermac, priv->netdev->dev_addr)) {
357 if (tp->tx_pause)
358 priv->port_open = false;
359 else
360 priv->port_open = true;
361 } else if (is_multicast_ether_addr(tp->peermac)) {
362 mwifiex_update_ralist_tx_pause(priv, tp->peermac, tp->tx_pause);
363 } else {
364 spin_lock_bh(&priv->sta_list_spinlock);
365 sta_ptr = mwifiex_get_sta_entry(priv, tp->peermac);
366 if (sta_ptr && sta_ptr->tx_pause != tp->tx_pause) {
367 sta_ptr->tx_pause = tp->tx_pause;
368 mwifiex_update_ralist_tx_pause(priv, tp->peermac,
369 tp->tx_pause);
370 }
371 spin_unlock_bh(&priv->sta_list_spinlock);
372 }
373 }
374
mwifiex_process_sta_tx_pause(struct mwifiex_private * priv,struct mwifiex_ie_types_header * tlv)375 static void mwifiex_process_sta_tx_pause(struct mwifiex_private *priv,
376 struct mwifiex_ie_types_header *tlv)
377 {
378 struct mwifiex_tx_pause_tlv *tp;
379 struct mwifiex_sta_node *sta_ptr;
380 int status;
381
382 tp = (void *)tlv;
383 mwifiex_dbg(priv->adapter, EVENT,
384 "sta tx_pause: %pM pause=%d, pkts=%d\n",
385 tp->peermac, tp->tx_pause,
386 tp->pkt_cnt);
387
388 if (ether_addr_equal(tp->peermac, priv->cfg_bssid)) {
389 if (tp->tx_pause)
390 priv->port_open = false;
391 else
392 priv->port_open = true;
393 } else {
394 if (!ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
395 return;
396
397 status = mwifiex_get_tdls_link_status(priv, tp->peermac);
398 if (mwifiex_is_tdls_link_setup(status)) {
399 spin_lock_bh(&priv->sta_list_spinlock);
400 sta_ptr = mwifiex_get_sta_entry(priv, tp->peermac);
401 if (sta_ptr && sta_ptr->tx_pause != tp->tx_pause) {
402 sta_ptr->tx_pause = tp->tx_pause;
403 mwifiex_update_ralist_tx_pause(priv,
404 tp->peermac,
405 tp->tx_pause);
406 }
407 spin_unlock_bh(&priv->sta_list_spinlock);
408 }
409 }
410 }
411
mwifiex_process_multi_chan_event(struct mwifiex_private * priv,struct sk_buff * event_skb)412 void mwifiex_process_multi_chan_event(struct mwifiex_private *priv,
413 struct sk_buff *event_skb)
414 {
415 struct mwifiex_ie_types_multi_chan_info *chan_info;
416 struct mwifiex_ie_types_mc_group_info *grp_info;
417 struct mwifiex_adapter *adapter = priv->adapter;
418 struct mwifiex_ie_types_header *tlv;
419 u16 tlv_buf_left, tlv_type, tlv_len;
420 int intf_num, bss_type, bss_num, i;
421 struct mwifiex_private *intf_priv;
422
423 tlv_buf_left = event_skb->len - sizeof(u32);
424 chan_info = (void *)event_skb->data + sizeof(u32);
425
426 if (le16_to_cpu(chan_info->header.type) != TLV_TYPE_MULTI_CHAN_INFO ||
427 tlv_buf_left < sizeof(struct mwifiex_ie_types_multi_chan_info)) {
428 mwifiex_dbg(adapter, ERROR,
429 "unknown TLV in chan_info event\n");
430 return;
431 }
432
433 adapter->usb_mc_status = le16_to_cpu(chan_info->status);
434 mwifiex_dbg(adapter, EVENT, "multi chan operation %s\n",
435 adapter->usb_mc_status ? "started" : "over");
436
437 tlv_buf_left -= sizeof(struct mwifiex_ie_types_multi_chan_info);
438 tlv = (struct mwifiex_ie_types_header *)chan_info->tlv_buffer;
439
440 while (tlv_buf_left >= (int)sizeof(struct mwifiex_ie_types_header)) {
441 tlv_type = le16_to_cpu(tlv->type);
442 tlv_len = le16_to_cpu(tlv->len);
443 if ((sizeof(struct mwifiex_ie_types_header) + tlv_len) >
444 tlv_buf_left) {
445 mwifiex_dbg(adapter, ERROR, "wrong tlv: tlvLen=%d,\t"
446 "tlvBufLeft=%d\n", tlv_len, tlv_buf_left);
447 break;
448 }
449 if (tlv_type != TLV_TYPE_MC_GROUP_INFO) {
450 mwifiex_dbg(adapter, ERROR, "wrong tlv type: 0x%x\n",
451 tlv_type);
452 break;
453 }
454
455 grp_info = (struct mwifiex_ie_types_mc_group_info *)tlv;
456 intf_num = grp_info->intf_num;
457 for (i = 0; i < intf_num; i++) {
458 bss_type = grp_info->bss_type_numlist[i] >> 4;
459 bss_num = grp_info->bss_type_numlist[i] & BSS_NUM_MASK;
460 intf_priv = mwifiex_get_priv_by_id(adapter, bss_num,
461 bss_type);
462 if (!intf_priv) {
463 mwifiex_dbg(adapter, ERROR,
464 "Invalid bss_type bss_num\t"
465 "in multi channel event\n");
466 continue;
467 }
468 if (adapter->iface_type == MWIFIEX_USB) {
469 u8 ep;
470
471 ep = grp_info->hid_num.usb_ep_num;
472 if (ep == MWIFIEX_USB_EP_DATA ||
473 ep == MWIFIEX_USB_EP_DATA_CH2)
474 intf_priv->usb_port = ep;
475 }
476 }
477
478 tlv_buf_left -= sizeof(struct mwifiex_ie_types_header) +
479 tlv_len;
480 tlv = (void *)((u8 *)tlv + tlv_len +
481 sizeof(struct mwifiex_ie_types_header));
482 }
483
484 if (adapter->iface_type == MWIFIEX_USB) {
485 adapter->tx_lock_flag = true;
486 adapter->usb_mc_setup = true;
487 mwifiex_multi_chan_resync(adapter);
488 }
489 }
490
mwifiex_process_tx_pause_event(struct mwifiex_private * priv,struct sk_buff * event_skb)491 void mwifiex_process_tx_pause_event(struct mwifiex_private *priv,
492 struct sk_buff *event_skb)
493 {
494 struct mwifiex_ie_types_header *tlv;
495 u16 tlv_type, tlv_len;
496 int tlv_buf_left;
497
498 if (!priv->media_connected) {
499 mwifiex_dbg(priv->adapter, ERROR,
500 "tx_pause event while disconnected; bss_role=%d\n",
501 priv->bss_role);
502 return;
503 }
504
505 tlv_buf_left = event_skb->len - sizeof(u32);
506 tlv = (void *)event_skb->data + sizeof(u32);
507
508 while (tlv_buf_left >= (int)sizeof(struct mwifiex_ie_types_header)) {
509 tlv_type = le16_to_cpu(tlv->type);
510 tlv_len = le16_to_cpu(tlv->len);
511 if ((sizeof(struct mwifiex_ie_types_header) + tlv_len) >
512 tlv_buf_left) {
513 mwifiex_dbg(priv->adapter, ERROR,
514 "wrong tlv: tlvLen=%d, tlvBufLeft=%d\n",
515 tlv_len, tlv_buf_left);
516 break;
517 }
518 if (tlv_type == TLV_TYPE_TX_PAUSE) {
519 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA)
520 mwifiex_process_sta_tx_pause(priv, tlv);
521 else
522 mwifiex_process_uap_tx_pause(priv, tlv);
523 }
524
525 tlv_buf_left -= sizeof(struct mwifiex_ie_types_header) +
526 tlv_len;
527 tlv = (void *)((u8 *)tlv + tlv_len +
528 sizeof(struct mwifiex_ie_types_header));
529 }
530
531 }
532
533 /*
534 * This function handles coex events generated by firmware
535 */
mwifiex_bt_coex_wlan_param_update_event(struct mwifiex_private * priv,struct sk_buff * event_skb)536 void mwifiex_bt_coex_wlan_param_update_event(struct mwifiex_private *priv,
537 struct sk_buff *event_skb)
538 {
539 struct mwifiex_adapter *adapter = priv->adapter;
540 struct mwifiex_ie_types_header *tlv;
541 struct mwifiex_ie_types_btcoex_aggr_win_size *winsizetlv;
542 struct mwifiex_ie_types_btcoex_scan_time *scantlv;
543 s32 len = event_skb->len - sizeof(u32);
544 u8 *cur_ptr = event_skb->data + sizeof(u32);
545 u16 tlv_type, tlv_len;
546
547 while (len >= sizeof(struct mwifiex_ie_types_header)) {
548 tlv = (struct mwifiex_ie_types_header *)cur_ptr;
549 tlv_len = le16_to_cpu(tlv->len);
550 tlv_type = le16_to_cpu(tlv->type);
551
552 if ((tlv_len + sizeof(struct mwifiex_ie_types_header)) > len)
553 break;
554 switch (tlv_type) {
555 case TLV_BTCOEX_WL_AGGR_WINSIZE:
556 winsizetlv =
557 (struct mwifiex_ie_types_btcoex_aggr_win_size *)tlv;
558 adapter->coex_win_size = winsizetlv->coex_win_size;
559 adapter->coex_tx_win_size =
560 winsizetlv->tx_win_size;
561 adapter->coex_rx_win_size =
562 winsizetlv->rx_win_size;
563 mwifiex_coex_ampdu_rxwinsize(adapter);
564 mwifiex_update_ampdu_txwinsize(adapter);
565 break;
566
567 case TLV_BTCOEX_WL_SCANTIME:
568 scantlv =
569 (struct mwifiex_ie_types_btcoex_scan_time *)tlv;
570 adapter->coex_scan = scantlv->coex_scan;
571 adapter->coex_min_scan_time = le16_to_cpu(scantlv->min_scan_time);
572 adapter->coex_max_scan_time = le16_to_cpu(scantlv->max_scan_time);
573 break;
574
575 default:
576 break;
577 }
578
579 len -= tlv_len + sizeof(struct mwifiex_ie_types_header);
580 cur_ptr += tlv_len +
581 sizeof(struct mwifiex_ie_types_header);
582 }
583
584 dev_dbg(adapter->dev, "coex_scan=%d min_scan=%d coex_win=%d, tx_win=%d rx_win=%d\n",
585 adapter->coex_scan, adapter->coex_min_scan_time,
586 adapter->coex_win_size, adapter->coex_tx_win_size,
587 adapter->coex_rx_win_size);
588 }
589
590 static void
mwifiex_fw_dump_info_event(struct mwifiex_private * priv,struct sk_buff * event_skb)591 mwifiex_fw_dump_info_event(struct mwifiex_private *priv,
592 struct sk_buff *event_skb)
593 {
594 struct mwifiex_adapter *adapter = priv->adapter;
595 struct mwifiex_fw_dump_header *fw_dump_hdr =
596 (void *)adapter->event_body;
597
598 if (adapter->iface_type != MWIFIEX_USB) {
599 mwifiex_dbg(adapter, MSG,
600 "event is not on usb interface, ignore it\n");
601 return;
602 }
603
604 if (!adapter->devdump_data) {
605 /* When receive the first event, allocate device dump
606 * buffer, dump driver info.
607 */
608 adapter->devdump_data = vzalloc(MWIFIEX_FW_DUMP_SIZE);
609 if (!adapter->devdump_data) {
610 mwifiex_dbg(adapter, ERROR,
611 "vzalloc devdump data failure!\n");
612 return;
613 }
614
615 mwifiex_drv_info_dump(adapter);
616
617 /* If no proceeded event arrive in 10s, upload device
618 * dump data, this will be useful if the end of
619 * transmission event get lost, in this cornel case,
620 * user would still get partial of the dump.
621 */
622 mod_timer(&adapter->devdump_timer,
623 jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
624 }
625
626 /* Overflow check */
627 if (adapter->devdump_len + event_skb->len >= MWIFIEX_FW_DUMP_SIZE)
628 goto upload_dump;
629
630 memmove(adapter->devdump_data + adapter->devdump_len,
631 adapter->event_skb->data, event_skb->len);
632 adapter->devdump_len += event_skb->len;
633
634 if (le16_to_cpu(fw_dump_hdr->type == FW_DUMP_INFO_ENDED)) {
635 mwifiex_dbg(adapter, MSG,
636 "receive end of transmission flag event!\n");
637 goto upload_dump;
638 }
639 return;
640
641 upload_dump:
642 del_timer_sync(&adapter->devdump_timer);
643 mwifiex_upload_device_dump(adapter);
644 }
645
646 /*
647 * This function handles events generated by firmware.
648 *
649 * This is a generic function and handles all events.
650 *
651 * Event specific routines are called by this function based
652 * upon the generated event cause.
653 *
654 * For the following events, the function just forwards them to upper
655 * layers, optionally recording the change -
656 * - EVENT_LINK_SENSED
657 * - EVENT_MIC_ERR_UNICAST
658 * - EVENT_MIC_ERR_MULTICAST
659 * - EVENT_PORT_RELEASE
660 * - EVENT_RSSI_LOW
661 * - EVENT_SNR_LOW
662 * - EVENT_MAX_FAIL
663 * - EVENT_RSSI_HIGH
664 * - EVENT_SNR_HIGH
665 * - EVENT_DATA_RSSI_LOW
666 * - EVENT_DATA_SNR_LOW
667 * - EVENT_DATA_RSSI_HIGH
668 * - EVENT_DATA_SNR_HIGH
669 * - EVENT_LINK_QUALITY
670 * - EVENT_PRE_BEACON_LOST
671 * - EVENT_IBSS_COALESCED
672 * - EVENT_IBSS_STA_CONNECT
673 * - EVENT_IBSS_STA_DISCONNECT
674 * - EVENT_WEP_ICV_ERR
675 * - EVENT_BW_CHANGE
676 * - EVENT_HOSTWAKE_STAIE
677 *
678 * For the following events, no action is taken -
679 * - EVENT_MIB_CHANGED
680 * - EVENT_INIT_DONE
681 * - EVENT_DUMMY_HOST_WAKEUP_SIGNAL
682 *
683 * Rest of the supported events requires driver handling -
684 * - EVENT_DEAUTHENTICATED
685 * - EVENT_DISASSOCIATED
686 * - EVENT_LINK_LOST
687 * - EVENT_PS_SLEEP
688 * - EVENT_PS_AWAKE
689 * - EVENT_DEEP_SLEEP_AWAKE
690 * - EVENT_HS_ACT_REQ
691 * - EVENT_ADHOC_BCN_LOST
692 * - EVENT_BG_SCAN_REPORT
693 * - EVENT_WMM_STATUS_CHANGE
694 * - EVENT_ADDBA
695 * - EVENT_DELBA
696 * - EVENT_BA_STREAM_TIEMOUT
697 * - EVENT_AMSDU_AGGR_CTRL
698 * - EVENT_FW_DUMP_INFO
699 */
mwifiex_process_sta_event(struct mwifiex_private * priv)700 int mwifiex_process_sta_event(struct mwifiex_private *priv)
701 {
702 struct mwifiex_adapter *adapter = priv->adapter;
703 int ret = 0, i;
704 u32 eventcause = adapter->event_cause;
705 u16 ctrl, reason_code;
706 u8 ibss_sta_addr[ETH_ALEN];
707 struct mwifiex_sta_node *sta_ptr;
708
709 switch (eventcause) {
710 case EVENT_DUMMY_HOST_WAKEUP_SIGNAL:
711 mwifiex_dbg(adapter, ERROR,
712 "invalid EVENT: DUMMY_HOST_WAKEUP_SIGNAL, ignore it\n");
713 break;
714 case EVENT_LINK_SENSED:
715 mwifiex_dbg(adapter, EVENT, "event: LINK_SENSED\n");
716 if (!netif_carrier_ok(priv->netdev))
717 netif_carrier_on(priv->netdev);
718 mwifiex_wake_up_net_dev_queue(priv->netdev, adapter);
719 break;
720
721 case EVENT_DEAUTHENTICATED:
722 mwifiex_dbg(adapter, EVENT, "event: Deauthenticated\n");
723 if (priv->wps.session_enable) {
724 mwifiex_dbg(adapter, INFO,
725 "info: receive deauth event in wps session\n");
726 break;
727 }
728 adapter->dbg.num_event_deauth++;
729 if (priv->media_connected) {
730 reason_code =
731 get_unaligned_le16(adapter->event_body);
732 mwifiex_reset_connect_state(priv, reason_code, true);
733 }
734 break;
735
736 case EVENT_DISASSOCIATED:
737 mwifiex_dbg(adapter, EVENT, "event: Disassociated\n");
738 if (priv->wps.session_enable) {
739 mwifiex_dbg(adapter, INFO,
740 "info: receive disassoc event in wps session\n");
741 break;
742 }
743 adapter->dbg.num_event_disassoc++;
744 if (priv->media_connected) {
745 reason_code =
746 get_unaligned_le16(adapter->event_body);
747 mwifiex_reset_connect_state(priv, reason_code, true);
748 }
749 break;
750
751 case EVENT_LINK_LOST:
752 mwifiex_dbg(adapter, EVENT, "event: Link lost\n");
753 adapter->dbg.num_event_link_lost++;
754 if (priv->media_connected) {
755 reason_code =
756 get_unaligned_le16(adapter->event_body);
757 mwifiex_reset_connect_state(priv, reason_code, true);
758 }
759 break;
760
761 case EVENT_PS_SLEEP:
762 mwifiex_dbg(adapter, EVENT, "info: EVENT: SLEEP\n");
763
764 adapter->ps_state = PS_STATE_PRE_SLEEP;
765
766 mwifiex_check_ps_cond(adapter);
767 break;
768
769 case EVENT_PS_AWAKE:
770 mwifiex_dbg(adapter, EVENT, "info: EVENT: AWAKE\n");
771 if (!adapter->pps_uapsd_mode &&
772 (priv->port_open ||
773 (priv->bss_mode == NL80211_IFTYPE_ADHOC)) &&
774 priv->media_connected && adapter->sleep_period.period) {
775 adapter->pps_uapsd_mode = true;
776 mwifiex_dbg(adapter, EVENT,
777 "event: PPS/UAPSD mode activated\n");
778 }
779 adapter->tx_lock_flag = false;
780 if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) {
781 if (mwifiex_check_last_packet_indication(priv)) {
782 if (adapter->data_sent ||
783 (adapter->if_ops.is_port_ready &&
784 !adapter->if_ops.is_port_ready(priv))) {
785 adapter->ps_state = PS_STATE_AWAKE;
786 adapter->pm_wakeup_card_req = false;
787 adapter->pm_wakeup_fw_try = false;
788 del_timer(&adapter->wakeup_timer);
789 break;
790 }
791 if (!mwifiex_send_null_packet
792 (priv,
793 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
794 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET))
795 adapter->ps_state =
796 PS_STATE_SLEEP;
797 return 0;
798 }
799 }
800 adapter->ps_state = PS_STATE_AWAKE;
801 adapter->pm_wakeup_card_req = false;
802 adapter->pm_wakeup_fw_try = false;
803 del_timer(&adapter->wakeup_timer);
804
805 break;
806
807 case EVENT_DEEP_SLEEP_AWAKE:
808 adapter->if_ops.wakeup_complete(adapter);
809 mwifiex_dbg(adapter, EVENT, "event: DS_AWAKE\n");
810 if (adapter->is_deep_sleep)
811 adapter->is_deep_sleep = false;
812 break;
813
814 case EVENT_HS_ACT_REQ:
815 mwifiex_dbg(adapter, EVENT, "event: HS_ACT_REQ\n");
816 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_HS_CFG_ENH,
817 0, 0, NULL, false);
818 break;
819
820 case EVENT_MIC_ERR_UNICAST:
821 mwifiex_dbg(adapter, EVENT, "event: UNICAST MIC ERROR\n");
822 cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid,
823 NL80211_KEYTYPE_PAIRWISE,
824 -1, NULL, GFP_KERNEL);
825 break;
826
827 case EVENT_MIC_ERR_MULTICAST:
828 mwifiex_dbg(adapter, EVENT, "event: MULTICAST MIC ERROR\n");
829 cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid,
830 NL80211_KEYTYPE_GROUP,
831 -1, NULL, GFP_KERNEL);
832 break;
833 case EVENT_MIB_CHANGED:
834 case EVENT_INIT_DONE:
835 break;
836
837 case EVENT_ADHOC_BCN_LOST:
838 mwifiex_dbg(adapter, EVENT, "event: ADHOC_BCN_LOST\n");
839 priv->adhoc_is_link_sensed = false;
840 mwifiex_clean_txrx(priv);
841 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
842 if (netif_carrier_ok(priv->netdev))
843 netif_carrier_off(priv->netdev);
844 break;
845
846 case EVENT_BG_SCAN_REPORT:
847 mwifiex_dbg(adapter, EVENT, "event: BGS_REPORT\n");
848 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_BG_SCAN_QUERY,
849 HostCmd_ACT_GEN_GET, 0, NULL, false);
850 break;
851
852 case EVENT_BG_SCAN_STOPPED:
853 dev_dbg(adapter->dev, "event: BGS_STOPPED\n");
854 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
855 if (priv->sched_scanning)
856 priv->sched_scanning = false;
857 break;
858
859 case EVENT_PORT_RELEASE:
860 mwifiex_dbg(adapter, EVENT, "event: PORT RELEASE\n");
861 priv->port_open = true;
862 break;
863
864 case EVENT_EXT_SCAN_REPORT:
865 mwifiex_dbg(adapter, EVENT, "event: EXT_SCAN Report\n");
866 /* We intend to skip this event during suspend, but handle
867 * it in interface disabled case
868 */
869 if (adapter->ext_scan && (!priv->scan_aborting ||
870 !netif_running(priv->netdev)))
871 ret = mwifiex_handle_event_ext_scan_report(priv,
872 adapter->event_skb->data);
873
874 break;
875
876 case EVENT_WMM_STATUS_CHANGE:
877 mwifiex_dbg(adapter, EVENT, "event: WMM status changed\n");
878 ret = mwifiex_send_cmd(priv, HostCmd_CMD_WMM_GET_STATUS,
879 0, 0, NULL, false);
880 break;
881
882 case EVENT_RSSI_LOW:
883 cfg80211_cqm_rssi_notify(priv->netdev,
884 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
885 0, GFP_KERNEL);
886 mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO,
887 HostCmd_ACT_GEN_GET, 0, NULL, false);
888 priv->subsc_evt_rssi_state = RSSI_LOW_RECVD;
889 mwifiex_dbg(adapter, EVENT, "event: Beacon RSSI_LOW\n");
890 break;
891 case EVENT_SNR_LOW:
892 mwifiex_dbg(adapter, EVENT, "event: Beacon SNR_LOW\n");
893 break;
894 case EVENT_MAX_FAIL:
895 mwifiex_dbg(adapter, EVENT, "event: MAX_FAIL\n");
896 break;
897 case EVENT_RSSI_HIGH:
898 cfg80211_cqm_rssi_notify(priv->netdev,
899 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
900 0, GFP_KERNEL);
901 mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO,
902 HostCmd_ACT_GEN_GET, 0, NULL, false);
903 priv->subsc_evt_rssi_state = RSSI_HIGH_RECVD;
904 mwifiex_dbg(adapter, EVENT, "event: Beacon RSSI_HIGH\n");
905 break;
906 case EVENT_SNR_HIGH:
907 mwifiex_dbg(adapter, EVENT, "event: Beacon SNR_HIGH\n");
908 break;
909 case EVENT_DATA_RSSI_LOW:
910 mwifiex_dbg(adapter, EVENT, "event: Data RSSI_LOW\n");
911 break;
912 case EVENT_DATA_SNR_LOW:
913 mwifiex_dbg(adapter, EVENT, "event: Data SNR_LOW\n");
914 break;
915 case EVENT_DATA_RSSI_HIGH:
916 mwifiex_dbg(adapter, EVENT, "event: Data RSSI_HIGH\n");
917 break;
918 case EVENT_DATA_SNR_HIGH:
919 mwifiex_dbg(adapter, EVENT, "event: Data SNR_HIGH\n");
920 break;
921 case EVENT_LINK_QUALITY:
922 mwifiex_dbg(adapter, EVENT, "event: Link Quality\n");
923 break;
924 case EVENT_PRE_BEACON_LOST:
925 mwifiex_dbg(adapter, EVENT, "event: Pre-Beacon Lost\n");
926 break;
927 case EVENT_IBSS_COALESCED:
928 mwifiex_dbg(adapter, EVENT, "event: IBSS_COALESCED\n");
929 ret = mwifiex_send_cmd(priv,
930 HostCmd_CMD_802_11_IBSS_COALESCING_STATUS,
931 HostCmd_ACT_GEN_GET, 0, NULL, false);
932 break;
933 case EVENT_IBSS_STA_CONNECT:
934 ether_addr_copy(ibss_sta_addr, adapter->event_body + 2);
935 mwifiex_dbg(adapter, EVENT, "event: IBSS_STA_CONNECT %pM\n",
936 ibss_sta_addr);
937 sta_ptr = mwifiex_add_sta_entry(priv, ibss_sta_addr);
938 if (sta_ptr && adapter->adhoc_11n_enabled) {
939 mwifiex_check_ibss_peer_capabilities(priv, sta_ptr,
940 adapter->event_skb);
941 if (sta_ptr->is_11n_enabled)
942 for (i = 0; i < MAX_NUM_TID; i++)
943 sta_ptr->ampdu_sta[i] =
944 priv->aggr_prio_tbl[i].ampdu_user;
945 else
946 for (i = 0; i < MAX_NUM_TID; i++)
947 sta_ptr->ampdu_sta[i] =
948 BA_STREAM_NOT_ALLOWED;
949 memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq));
950 }
951
952 break;
953 case EVENT_IBSS_STA_DISCONNECT:
954 ether_addr_copy(ibss_sta_addr, adapter->event_body + 2);
955 mwifiex_dbg(adapter, EVENT, "event: IBSS_STA_DISCONNECT %pM\n",
956 ibss_sta_addr);
957 sta_ptr = mwifiex_get_sta_entry(priv, ibss_sta_addr);
958 if (sta_ptr && sta_ptr->is_11n_enabled) {
959 mwifiex_11n_del_rx_reorder_tbl_by_ta(priv,
960 ibss_sta_addr);
961 mwifiex_del_tx_ba_stream_tbl_by_ra(priv, ibss_sta_addr);
962 }
963 mwifiex_wmm_del_peer_ra_list(priv, ibss_sta_addr);
964 mwifiex_del_sta_entry(priv, ibss_sta_addr);
965 break;
966 case EVENT_ADDBA:
967 mwifiex_dbg(adapter, EVENT, "event: ADDBA Request\n");
968 mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP,
969 HostCmd_ACT_GEN_SET, 0,
970 adapter->event_body, false);
971 break;
972 case EVENT_DELBA:
973 mwifiex_dbg(adapter, EVENT, "event: DELBA Request\n");
974 mwifiex_11n_delete_ba_stream(priv, adapter->event_body);
975 break;
976 case EVENT_BA_STREAM_TIEMOUT:
977 mwifiex_dbg(adapter, EVENT, "event: BA Stream timeout\n");
978 mwifiex_11n_ba_stream_timeout(priv,
979 (struct host_cmd_ds_11n_batimeout
980 *)
981 adapter->event_body);
982 break;
983 case EVENT_AMSDU_AGGR_CTRL:
984 ctrl = get_unaligned_le16(adapter->event_body);
985 mwifiex_dbg(adapter, EVENT,
986 "event: AMSDU_AGGR_CTRL %d\n", ctrl);
987
988 adapter->tx_buf_size =
989 min_t(u16, adapter->curr_tx_buf_size, ctrl);
990 mwifiex_dbg(adapter, EVENT, "event: tx_buf_size %d\n",
991 adapter->tx_buf_size);
992 break;
993
994 case EVENT_WEP_ICV_ERR:
995 mwifiex_dbg(adapter, EVENT, "event: WEP ICV error\n");
996 break;
997
998 case EVENT_BW_CHANGE:
999 mwifiex_dbg(adapter, EVENT, "event: BW Change\n");
1000 break;
1001
1002 case EVENT_HOSTWAKE_STAIE:
1003 mwifiex_dbg(adapter, EVENT,
1004 "event: HOSTWAKE_STAIE %d\n", eventcause);
1005 break;
1006
1007 case EVENT_REMAIN_ON_CHAN_EXPIRED:
1008 mwifiex_dbg(adapter, EVENT,
1009 "event: Remain on channel expired\n");
1010 cfg80211_remain_on_channel_expired(&priv->wdev,
1011 priv->roc_cfg.cookie,
1012 &priv->roc_cfg.chan,
1013 GFP_ATOMIC);
1014
1015 memset(&priv->roc_cfg, 0x00, sizeof(struct mwifiex_roc_cfg));
1016
1017 break;
1018
1019 case EVENT_CHANNEL_SWITCH_ANN:
1020 mwifiex_dbg(adapter, EVENT, "event: Channel Switch Announcement\n");
1021 priv->csa_expire_time =
1022 jiffies + msecs_to_jiffies(DFS_CHAN_MOVE_TIME);
1023 priv->csa_chan = priv->curr_bss_params.bss_descriptor.channel;
1024 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_DEAUTHENTICATE,
1025 HostCmd_ACT_GEN_SET, 0,
1026 priv->curr_bss_params.bss_descriptor.mac_address,
1027 false);
1028 break;
1029
1030 case EVENT_TDLS_GENERIC_EVENT:
1031 ret = mwifiex_parse_tdls_event(priv, adapter->event_skb);
1032 break;
1033
1034 case EVENT_TX_DATA_PAUSE:
1035 mwifiex_dbg(adapter, EVENT, "event: TX DATA PAUSE\n");
1036 mwifiex_process_tx_pause_event(priv, adapter->event_skb);
1037 break;
1038
1039 case EVENT_MULTI_CHAN_INFO:
1040 mwifiex_dbg(adapter, EVENT, "event: multi-chan info\n");
1041 mwifiex_process_multi_chan_event(priv, adapter->event_skb);
1042 break;
1043
1044 case EVENT_TX_STATUS_REPORT:
1045 mwifiex_dbg(adapter, EVENT, "event: TX_STATUS Report\n");
1046 mwifiex_parse_tx_status_event(priv, adapter->event_body);
1047 break;
1048
1049 case EVENT_CHANNEL_REPORT_RDY:
1050 mwifiex_dbg(adapter, EVENT, "event: Channel Report\n");
1051 ret = mwifiex_11h_handle_chanrpt_ready(priv,
1052 adapter->event_skb);
1053 break;
1054 case EVENT_RADAR_DETECTED:
1055 mwifiex_dbg(adapter, EVENT, "event: Radar detected\n");
1056 ret = mwifiex_11h_handle_radar_detected(priv,
1057 adapter->event_skb);
1058 break;
1059 case EVENT_BT_COEX_WLAN_PARA_CHANGE:
1060 dev_dbg(adapter->dev, "EVENT: BT coex wlan param update\n");
1061 mwifiex_bt_coex_wlan_param_update_event(priv,
1062 adapter->event_skb);
1063 break;
1064 case EVENT_RXBA_SYNC:
1065 dev_dbg(adapter->dev, "EVENT: RXBA_SYNC\n");
1066 mwifiex_11n_rxba_sync_event(priv, adapter->event_body,
1067 adapter->event_skb->len -
1068 sizeof(eventcause));
1069 break;
1070 case EVENT_FW_DUMP_INFO:
1071 mwifiex_dbg(adapter, EVENT, "event: firmware debug info\n");
1072 mwifiex_fw_dump_info_event(priv, adapter->event_skb);
1073 break;
1074 /* Debugging event; not used, but let's not print an ERROR for it. */
1075 case EVENT_UNKNOWN_DEBUG:
1076 mwifiex_dbg(adapter, EVENT, "event: debug\n");
1077 break;
1078 default:
1079 mwifiex_dbg(adapter, ERROR, "event: unknown event id: %#x\n",
1080 eventcause);
1081 break;
1082 }
1083
1084 return ret;
1085 }
1086