2 * Marvell Wireless LAN device driver: station event handling
4 * Copyright (C) 2011-2014, Marvell International Ltd.
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
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.
29 * This function resets the connection state.
31 * The function is invoked after receiving a disconnect event from firmware,
32 * and performs the following actions -
33 * - Set media status to disconnected
34 * - Clean up Tx and Rx packets
35 * - Resets SNR/NF/RSSI value in driver
36 * - Resets security configurations in driver
37 * - Enables auto data rate
38 * - Saves the previous SSID and BSSID so that they can
39 * be used for re-association, if required
40 * - Erases current SSID and BSSID information
41 * - Sends a disconnect event to upper layers/applications.
44 mwifiex_reset_connect_state(struct mwifiex_private
*priv
, u16 reason_code
)
46 struct mwifiex_adapter
*adapter
= priv
->adapter
;
48 if (!priv
->media_connected
)
51 mwifiex_dbg(adapter
, INFO
,
52 "info: handles disconnect event\n");
54 priv
->media_connected
= false;
56 priv
->scan_block
= false;
58 if ((GET_BSS_ROLE(priv
) == MWIFIEX_BSS_ROLE_STA
) &&
59 ISSUPP_TDLS_ENABLED(priv
->adapter
->fw_cap_info
)) {
60 mwifiex_disable_all_tdls_links(priv
);
62 if (priv
->adapter
->auto_tdls
)
63 mwifiex_clean_auto_tdls(priv
);
66 /* Free Tx and Rx packets, report disconnect to upper layer */
67 mwifiex_clean_txrx(priv
);
69 /* Reset SNR/NF/RSSI values */
70 priv
->data_rssi_last
= 0;
71 priv
->data_nf_last
= 0;
72 priv
->data_rssi_avg
= 0;
73 priv
->data_nf_avg
= 0;
74 priv
->bcn_rssi_last
= 0;
75 priv
->bcn_nf_last
= 0;
76 priv
->bcn_rssi_avg
= 0;
79 priv
->rxpd_htinfo
= 0;
80 priv
->sec_info
.wpa_enabled
= false;
81 priv
->sec_info
.wpa2_enabled
= false;
84 priv
->sec_info
.wapi_enabled
= false;
85 priv
->wapi_ie_len
= 0;
86 priv
->sec_info
.wapi_key_on
= false;
88 priv
->sec_info
.encryption_mode
= 0;
90 /* Enable auto data rate */
91 priv
->is_data_rate_auto
= true;
94 if ((GET_BSS_ROLE(priv
) == MWIFIEX_BSS_ROLE_STA
||
95 GET_BSS_ROLE(priv
) == MWIFIEX_BSS_ROLE_UAP
) && priv
->hist_data
)
96 mwifiex_hist_data_reset(priv
);
98 if (priv
->bss_mode
== NL80211_IFTYPE_ADHOC
) {
99 priv
->adhoc_state
= ADHOC_IDLE
;
100 priv
->adhoc_is_link_sensed
= false;
104 * Memorize the previous SSID and BSSID so
105 * it could be used for re-assoc
108 mwifiex_dbg(adapter
, INFO
,
109 "info: previous SSID=%s, SSID len=%u\n",
110 priv
->prev_ssid
.ssid
, priv
->prev_ssid
.ssid_len
);
112 mwifiex_dbg(adapter
, INFO
,
113 "info: current SSID=%s, SSID len=%u\n",
114 priv
->curr_bss_params
.bss_descriptor
.ssid
.ssid
,
115 priv
->curr_bss_params
.bss_descriptor
.ssid
.ssid_len
);
117 memcpy(&priv
->prev_ssid
,
118 &priv
->curr_bss_params
.bss_descriptor
.ssid
,
119 sizeof(struct cfg80211_ssid
));
121 memcpy(priv
->prev_bssid
,
122 priv
->curr_bss_params
.bss_descriptor
.mac_address
, ETH_ALEN
);
124 /* Need to erase the current SSID and BSSID info */
125 memset(&priv
->curr_bss_params
, 0x00, sizeof(priv
->curr_bss_params
));
127 adapter
->tx_lock_flag
= false;
128 adapter
->pps_uapsd_mode
= false;
130 if (adapter
->is_cmd_timedout
&& adapter
->curr_cmd
)
132 priv
->media_connected
= false;
133 mwifiex_dbg(adapter
, MSG
,
134 "info: successfully disconnected from %pM: reason code %d\n",
135 priv
->cfg_bssid
, reason_code
);
136 if (priv
->bss_mode
== NL80211_IFTYPE_STATION
||
137 priv
->bss_mode
== NL80211_IFTYPE_P2P_CLIENT
) {
138 cfg80211_disconnected(priv
->netdev
, reason_code
, NULL
, 0,
141 eth_zero_addr(priv
->cfg_bssid
);
143 mwifiex_stop_net_dev_queue(priv
->netdev
, adapter
);
144 if (netif_carrier_ok(priv
->netdev
))
145 netif_carrier_off(priv
->netdev
);
148 static int mwifiex_parse_tdls_event(struct mwifiex_private
*priv
,
149 struct sk_buff
*event_skb
)
152 struct mwifiex_adapter
*adapter
= priv
->adapter
;
153 struct mwifiex_sta_node
*sta_ptr
;
154 struct mwifiex_tdls_generic_event
*tdls_evt
=
155 (void *)event_skb
->data
+ sizeof(adapter
->event_cause
);
157 /* reserved 2 bytes are not mandatory in tdls event */
158 if (event_skb
->len
< (sizeof(struct mwifiex_tdls_generic_event
) -
159 sizeof(u16
) - sizeof(adapter
->event_cause
))) {
160 mwifiex_dbg(adapter
, ERROR
, "Invalid event length!\n");
164 sta_ptr
= mwifiex_get_sta_entry(priv
, tdls_evt
->peer_mac
);
166 mwifiex_dbg(adapter
, ERROR
, "cannot get sta entry!\n");
170 switch (le16_to_cpu(tdls_evt
->type
)) {
171 case TDLS_EVENT_LINK_TEAR_DOWN
:
172 cfg80211_tdls_oper_request(priv
->netdev
,
174 NL80211_TDLS_TEARDOWN
,
175 le16_to_cpu(tdls_evt
->u
.reason_code
),
186 * This function handles coex events generated by firmware
188 void mwifiex_bt_coex_wlan_param_update_event(struct mwifiex_private
*priv
,
189 struct sk_buff
*event_skb
)
191 struct mwifiex_adapter
*adapter
= priv
->adapter
;
192 struct mwifiex_ie_types_header
*tlv
;
193 struct mwifiex_ie_types_btcoex_aggr_win_size
*winsizetlv
;
194 struct mwifiex_ie_types_btcoex_scan_time
*scantlv
;
195 s32 len
= event_skb
->len
- sizeof(u32
);
196 u8
*cur_ptr
= event_skb
->data
+ sizeof(u32
);
197 u16 tlv_type
, tlv_len
;
199 while (len
>= sizeof(struct mwifiex_ie_types_header
)) {
200 tlv
= (struct mwifiex_ie_types_header
*)cur_ptr
;
201 tlv_len
= le16_to_cpu(tlv
->len
);
202 tlv_type
= le16_to_cpu(tlv
->type
);
204 if ((tlv_len
+ sizeof(struct mwifiex_ie_types_header
)) > len
)
207 case TLV_BTCOEX_WL_AGGR_WINSIZE
:
209 (struct mwifiex_ie_types_btcoex_aggr_win_size
*)tlv
;
210 adapter
->coex_win_size
= winsizetlv
->coex_win_size
;
211 adapter
->coex_tx_win_size
=
212 winsizetlv
->tx_win_size
;
213 adapter
->coex_rx_win_size
=
214 winsizetlv
->rx_win_size
;
215 mwifiex_coex_ampdu_rxwinsize(adapter
);
216 mwifiex_update_ampdu_txwinsize(adapter
);
219 case TLV_BTCOEX_WL_SCANTIME
:
221 (struct mwifiex_ie_types_btcoex_scan_time
*)tlv
;
222 adapter
->coex_scan
= scantlv
->coex_scan
;
223 adapter
->coex_min_scan_time
= scantlv
->min_scan_time
;
224 adapter
->coex_max_scan_time
= scantlv
->max_scan_time
;
231 len
-= tlv_len
+ sizeof(struct mwifiex_ie_types_header
);
233 sizeof(struct mwifiex_ie_types_header
);
236 dev_dbg(adapter
->dev
, "coex_scan=%d min_scan=%d coex_win=%d, tx_win=%d rx_win=%d\n",
237 adapter
->coex_scan
, adapter
->coex_min_scan_time
,
238 adapter
->coex_win_size
, adapter
->coex_tx_win_size
,
239 adapter
->coex_rx_win_size
);
243 * This function handles events generated by firmware.
245 * This is a generic function and handles all events.
247 * Event specific routines are called by this function based
248 * upon the generated event cause.
250 * For the following events, the function just forwards them to upper
251 * layers, optionally recording the change -
252 * - EVENT_LINK_SENSED
253 * - EVENT_MIC_ERR_UNICAST
254 * - EVENT_MIC_ERR_MULTICAST
255 * - EVENT_PORT_RELEASE
261 * - EVENT_DATA_RSSI_LOW
262 * - EVENT_DATA_SNR_LOW
263 * - EVENT_DATA_RSSI_HIGH
264 * - EVENT_DATA_SNR_HIGH
265 * - EVENT_LINK_QUALITY
266 * - EVENT_PRE_BEACON_LOST
267 * - EVENT_IBSS_COALESCED
268 * - EVENT_WEP_ICV_ERR
270 * - EVENT_HOSTWAKE_STAIE
272 * For the following events, no action is taken -
273 * - EVENT_MIB_CHANGED
275 * - EVENT_DUMMY_HOST_WAKEUP_SIGNAL
277 * Rest of the supported events requires driver handling -
278 * - EVENT_DEAUTHENTICATED
279 * - EVENT_DISASSOCIATED
283 * - EVENT_DEEP_SLEEP_AWAKE
285 * - EVENT_ADHOC_BCN_LOST
286 * - EVENT_BG_SCAN_REPORT
287 * - EVENT_WMM_STATUS_CHANGE
290 * - EVENT_BA_STREAM_TIEMOUT
291 * - EVENT_AMSDU_AGGR_CTRL
293 int mwifiex_process_sta_event(struct mwifiex_private
*priv
)
295 struct mwifiex_adapter
*adapter
= priv
->adapter
;
297 u32 eventcause
= adapter
->event_cause
;
298 u16 ctrl
, reason_code
;
300 switch (eventcause
) {
301 case EVENT_DUMMY_HOST_WAKEUP_SIGNAL
:
302 mwifiex_dbg(adapter
, ERROR
,
303 "invalid EVENT: DUMMY_HOST_WAKEUP_SIGNAL, ignore it\n");
305 case EVENT_LINK_SENSED
:
306 mwifiex_dbg(adapter
, EVENT
, "event: LINK_SENSED\n");
307 if (!netif_carrier_ok(priv
->netdev
))
308 netif_carrier_on(priv
->netdev
);
309 mwifiex_wake_up_net_dev_queue(priv
->netdev
, adapter
);
312 case EVENT_DEAUTHENTICATED
:
313 mwifiex_dbg(adapter
, EVENT
, "event: Deauthenticated\n");
314 if (priv
->wps
.session_enable
) {
315 mwifiex_dbg(adapter
, INFO
,
316 "info: receive deauth event in wps session\n");
319 adapter
->dbg
.num_event_deauth
++;
320 if (priv
->media_connected
) {
322 le16_to_cpu(*(__le16
*)adapter
->event_body
);
323 mwifiex_reset_connect_state(priv
, reason_code
);
327 case EVENT_DISASSOCIATED
:
328 mwifiex_dbg(adapter
, EVENT
, "event: Disassociated\n");
329 if (priv
->wps
.session_enable
) {
330 mwifiex_dbg(adapter
, INFO
,
331 "info: receive disassoc event in wps session\n");
334 adapter
->dbg
.num_event_disassoc
++;
335 if (priv
->media_connected
) {
337 le16_to_cpu(*(__le16
*)adapter
->event_body
);
338 mwifiex_reset_connect_state(priv
, reason_code
);
342 case EVENT_LINK_LOST
:
343 mwifiex_dbg(adapter
, EVENT
, "event: Link lost\n");
344 adapter
->dbg
.num_event_link_lost
++;
345 if (priv
->media_connected
) {
347 le16_to_cpu(*(__le16
*)adapter
->event_body
);
348 mwifiex_reset_connect_state(priv
, reason_code
);
353 mwifiex_dbg(adapter
, EVENT
, "info: EVENT: SLEEP\n");
355 adapter
->ps_state
= PS_STATE_PRE_SLEEP
;
357 mwifiex_check_ps_cond(adapter
);
361 mwifiex_dbg(adapter
, EVENT
, "info: EVENT: AWAKE\n");
362 if (!adapter
->pps_uapsd_mode
&&
363 priv
->media_connected
&& adapter
->sleep_period
.period
) {
364 adapter
->pps_uapsd_mode
= true;
365 mwifiex_dbg(adapter
, EVENT
,
366 "event: PPS/UAPSD mode activated\n");
368 adapter
->tx_lock_flag
= false;
369 if (adapter
->pps_uapsd_mode
&& adapter
->gen_null_pkt
) {
370 if (mwifiex_check_last_packet_indication(priv
)) {
371 if (adapter
->data_sent
) {
372 adapter
->ps_state
= PS_STATE_AWAKE
;
373 adapter
->pm_wakeup_card_req
= false;
374 adapter
->pm_wakeup_fw_try
= false;
375 del_timer(&adapter
->wakeup_timer
);
378 if (!mwifiex_send_null_packet
380 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET
|
381 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET
))
387 adapter
->ps_state
= PS_STATE_AWAKE
;
388 adapter
->pm_wakeup_card_req
= false;
389 adapter
->pm_wakeup_fw_try
= false;
390 del_timer(&adapter
->wakeup_timer
);
394 case EVENT_DEEP_SLEEP_AWAKE
:
395 adapter
->if_ops
.wakeup_complete(adapter
);
396 mwifiex_dbg(adapter
, EVENT
, "event: DS_AWAKE\n");
397 if (adapter
->is_deep_sleep
)
398 adapter
->is_deep_sleep
= false;
401 case EVENT_HS_ACT_REQ
:
402 mwifiex_dbg(adapter
, EVENT
, "event: HS_ACT_REQ\n");
403 ret
= mwifiex_send_cmd(priv
, HostCmd_CMD_802_11_HS_CFG_ENH
,
407 case EVENT_MIC_ERR_UNICAST
:
408 mwifiex_dbg(adapter
, EVENT
, "event: UNICAST MIC ERROR\n");
409 cfg80211_michael_mic_failure(priv
->netdev
, priv
->cfg_bssid
,
410 NL80211_KEYTYPE_PAIRWISE
,
411 -1, NULL
, GFP_KERNEL
);
414 case EVENT_MIC_ERR_MULTICAST
:
415 mwifiex_dbg(adapter
, EVENT
, "event: MULTICAST MIC ERROR\n");
416 cfg80211_michael_mic_failure(priv
->netdev
, priv
->cfg_bssid
,
417 NL80211_KEYTYPE_GROUP
,
418 -1, NULL
, GFP_KERNEL
);
420 case EVENT_MIB_CHANGED
:
421 case EVENT_INIT_DONE
:
424 case EVENT_ADHOC_BCN_LOST
:
425 mwifiex_dbg(adapter
, EVENT
, "event: ADHOC_BCN_LOST\n");
426 priv
->adhoc_is_link_sensed
= false;
427 mwifiex_clean_txrx(priv
);
428 mwifiex_stop_net_dev_queue(priv
->netdev
, adapter
);
429 if (netif_carrier_ok(priv
->netdev
))
430 netif_carrier_off(priv
->netdev
);
433 case EVENT_BG_SCAN_REPORT
:
434 mwifiex_dbg(adapter
, EVENT
, "event: BGS_REPORT\n");
435 ret
= mwifiex_send_cmd(priv
, HostCmd_CMD_802_11_BG_SCAN_QUERY
,
436 HostCmd_ACT_GEN_GET
, 0, NULL
, false);
439 case EVENT_PORT_RELEASE
:
440 mwifiex_dbg(adapter
, EVENT
, "event: PORT RELEASE\n");
443 case EVENT_EXT_SCAN_REPORT
:
444 mwifiex_dbg(adapter
, EVENT
, "event: EXT_SCAN Report\n");
445 if (adapter
->ext_scan
)
446 ret
= mwifiex_handle_event_ext_scan_report(priv
,
447 adapter
->event_skb
->data
);
451 case EVENT_WMM_STATUS_CHANGE
:
452 mwifiex_dbg(adapter
, EVENT
, "event: WMM status changed\n");
453 ret
= mwifiex_send_cmd(priv
, HostCmd_CMD_WMM_GET_STATUS
,
458 cfg80211_cqm_rssi_notify(priv
->netdev
,
459 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW
,
461 mwifiex_send_cmd(priv
, HostCmd_CMD_RSSI_INFO
,
462 HostCmd_ACT_GEN_GET
, 0, NULL
, false);
463 priv
->subsc_evt_rssi_state
= RSSI_LOW_RECVD
;
464 mwifiex_dbg(adapter
, EVENT
, "event: Beacon RSSI_LOW\n");
467 mwifiex_dbg(adapter
, EVENT
, "event: Beacon SNR_LOW\n");
470 mwifiex_dbg(adapter
, EVENT
, "event: MAX_FAIL\n");
472 case EVENT_RSSI_HIGH
:
473 cfg80211_cqm_rssi_notify(priv
->netdev
,
474 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH
,
476 mwifiex_send_cmd(priv
, HostCmd_CMD_RSSI_INFO
,
477 HostCmd_ACT_GEN_GET
, 0, NULL
, false);
478 priv
->subsc_evt_rssi_state
= RSSI_HIGH_RECVD
;
479 mwifiex_dbg(adapter
, EVENT
, "event: Beacon RSSI_HIGH\n");
482 mwifiex_dbg(adapter
, EVENT
, "event: Beacon SNR_HIGH\n");
484 case EVENT_DATA_RSSI_LOW
:
485 mwifiex_dbg(adapter
, EVENT
, "event: Data RSSI_LOW\n");
487 case EVENT_DATA_SNR_LOW
:
488 mwifiex_dbg(adapter
, EVENT
, "event: Data SNR_LOW\n");
490 case EVENT_DATA_RSSI_HIGH
:
491 mwifiex_dbg(adapter
, EVENT
, "event: Data RSSI_HIGH\n");
493 case EVENT_DATA_SNR_HIGH
:
494 mwifiex_dbg(adapter
, EVENT
, "event: Data SNR_HIGH\n");
496 case EVENT_LINK_QUALITY
:
497 mwifiex_dbg(adapter
, EVENT
, "event: Link Quality\n");
499 case EVENT_PRE_BEACON_LOST
:
500 mwifiex_dbg(adapter
, EVENT
, "event: Pre-Beacon Lost\n");
502 case EVENT_IBSS_COALESCED
:
503 mwifiex_dbg(adapter
, EVENT
, "event: IBSS_COALESCED\n");
504 ret
= mwifiex_send_cmd(priv
,
505 HostCmd_CMD_802_11_IBSS_COALESCING_STATUS
,
506 HostCmd_ACT_GEN_GET
, 0, NULL
, false);
509 mwifiex_dbg(adapter
, EVENT
, "event: ADDBA Request\n");
510 mwifiex_send_cmd(priv
, HostCmd_CMD_11N_ADDBA_RSP
,
511 HostCmd_ACT_GEN_SET
, 0,
512 adapter
->event_body
, false);
515 mwifiex_dbg(adapter
, EVENT
, "event: DELBA Request\n");
516 mwifiex_11n_delete_ba_stream(priv
, adapter
->event_body
);
518 case EVENT_BA_STREAM_TIEMOUT
:
519 mwifiex_dbg(adapter
, EVENT
, "event: BA Stream timeout\n");
520 mwifiex_11n_ba_stream_timeout(priv
,
521 (struct host_cmd_ds_11n_batimeout
523 adapter
->event_body
);
525 case EVENT_AMSDU_AGGR_CTRL
:
526 ctrl
= le16_to_cpu(*(__le16
*)adapter
->event_body
);
527 mwifiex_dbg(adapter
, EVENT
,
528 "event: AMSDU_AGGR_CTRL %d\n", ctrl
);
530 adapter
->tx_buf_size
=
531 min_t(u16
, adapter
->curr_tx_buf_size
, ctrl
);
532 mwifiex_dbg(adapter
, EVENT
, "event: tx_buf_size %d\n",
533 adapter
->tx_buf_size
);
536 case EVENT_WEP_ICV_ERR
:
537 mwifiex_dbg(adapter
, EVENT
, "event: WEP ICV error\n");
540 case EVENT_BW_CHANGE
:
541 mwifiex_dbg(adapter
, EVENT
, "event: BW Change\n");
544 case EVENT_HOSTWAKE_STAIE
:
545 mwifiex_dbg(adapter
, EVENT
,
546 "event: HOSTWAKE_STAIE %d\n", eventcause
);
549 case EVENT_REMAIN_ON_CHAN_EXPIRED
:
550 mwifiex_dbg(adapter
, EVENT
,
551 "event: Remain on channel expired\n");
552 cfg80211_remain_on_channel_expired(&priv
->wdev
,
553 priv
->roc_cfg
.cookie
,
557 memset(&priv
->roc_cfg
, 0x00, sizeof(struct mwifiex_roc_cfg
));
561 case EVENT_CHANNEL_SWITCH_ANN
:
562 mwifiex_dbg(adapter
, EVENT
, "event: Channel Switch Announcement\n");
563 priv
->csa_expire_time
=
564 jiffies
+ msecs_to_jiffies(DFS_CHAN_MOVE_TIME
);
565 priv
->csa_chan
= priv
->curr_bss_params
.bss_descriptor
.channel
;
566 ret
= mwifiex_send_cmd(priv
, HostCmd_CMD_802_11_DEAUTHENTICATE
,
567 HostCmd_ACT_GEN_SET
, 0,
568 priv
->curr_bss_params
.bss_descriptor
.mac_address
,
572 case EVENT_TDLS_GENERIC_EVENT
:
573 ret
= mwifiex_parse_tdls_event(priv
, adapter
->event_skb
);
576 case EVENT_TX_STATUS_REPORT
:
577 mwifiex_dbg(adapter
, EVENT
, "event: TX_STATUS Report\n");
578 mwifiex_parse_tx_status_event(priv
, adapter
->event_body
);
581 case EVENT_CHANNEL_REPORT_RDY
:
582 mwifiex_dbg(adapter
, EVENT
, "event: Channel Report\n");
583 ret
= mwifiex_11h_handle_chanrpt_ready(priv
,
586 case EVENT_RADAR_DETECTED
:
587 mwifiex_dbg(adapter
, EVENT
, "event: Radar detected\n");
588 ret
= mwifiex_11h_handle_radar_detected(priv
,
591 case EVENT_BT_COEX_WLAN_PARA_CHANGE
:
592 dev_dbg(adapter
->dev
, "EVENT: BT coex wlan param update\n");
593 mwifiex_bt_coex_wlan_param_update_event(priv
,
597 mwifiex_dbg(adapter
, ERROR
, "event: unknown event id: %#x\n",