2 * Marvell Wireless LAN device driver: station event handling
4 * Copyright (C) 2011, 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
)
46 struct mwifiex_adapter
*adapter
= priv
->adapter
;
48 if (!priv
->media_connected
)
51 dev_dbg(adapter
->dev
, "info: handles disconnect event\n");
53 priv
->media_connected
= false;
55 priv
->scan_block
= false;
57 /* Free Tx and Rx packets, report disconnect to upper layer */
58 mwifiex_clean_txrx(priv
);
60 /* Reset SNR/NF/RSSI values */
61 priv
->data_rssi_last
= 0;
62 priv
->data_nf_last
= 0;
63 priv
->data_rssi_avg
= 0;
64 priv
->data_nf_avg
= 0;
65 priv
->bcn_rssi_last
= 0;
66 priv
->bcn_nf_last
= 0;
67 priv
->bcn_rssi_avg
= 0;
70 priv
->rxpd_htinfo
= 0;
71 priv
->sec_info
.wpa_enabled
= false;
72 priv
->sec_info
.wpa2_enabled
= false;
75 priv
->sec_info
.wapi_enabled
= false;
76 priv
->wapi_ie_len
= 0;
77 priv
->sec_info
.wapi_key_on
= false;
79 priv
->sec_info
.encryption_mode
= 0;
81 /* Enable auto data rate */
82 priv
->is_data_rate_auto
= true;
85 if (priv
->bss_mode
== NL80211_IFTYPE_ADHOC
) {
86 priv
->adhoc_state
= ADHOC_IDLE
;
87 priv
->adhoc_is_link_sensed
= false;
91 * Memorize the previous SSID and BSSID so
92 * it could be used for re-assoc
95 dev_dbg(adapter
->dev
, "info: previous SSID=%s, SSID len=%u\n",
96 priv
->prev_ssid
.ssid
, priv
->prev_ssid
.ssid_len
);
98 dev_dbg(adapter
->dev
, "info: current SSID=%s, SSID len=%u\n",
99 priv
->curr_bss_params
.bss_descriptor
.ssid
.ssid
,
100 priv
->curr_bss_params
.bss_descriptor
.ssid
.ssid_len
);
102 memcpy(&priv
->prev_ssid
,
103 &priv
->curr_bss_params
.bss_descriptor
.ssid
,
104 sizeof(struct cfg80211_ssid
));
106 memcpy(priv
->prev_bssid
,
107 priv
->curr_bss_params
.bss_descriptor
.mac_address
, ETH_ALEN
);
109 /* Need to erase the current SSID and BSSID info */
110 memset(&priv
->curr_bss_params
, 0x00, sizeof(priv
->curr_bss_params
));
112 adapter
->tx_lock_flag
= false;
113 adapter
->pps_uapsd_mode
= false;
115 if (adapter
->num_cmd_timeout
&& adapter
->curr_cmd
)
117 priv
->media_connected
= false;
118 dev_dbg(adapter
->dev
,
119 "info: successfully disconnected from %pM: reason code %d\n",
120 priv
->cfg_bssid
, WLAN_REASON_DEAUTH_LEAVING
);
121 if (priv
->bss_mode
== NL80211_IFTYPE_STATION
) {
122 cfg80211_disconnected(priv
->netdev
, WLAN_REASON_DEAUTH_LEAVING
,
123 NULL
, 0, GFP_KERNEL
);
125 memset(priv
->cfg_bssid
, 0, ETH_ALEN
);
127 if (!netif_queue_stopped(priv
->netdev
))
128 mwifiex_stop_net_dev_queue(priv
->netdev
, adapter
);
129 if (netif_carrier_ok(priv
->netdev
))
130 netif_carrier_off(priv
->netdev
);
134 * This function handles events generated by firmware.
136 * This is a generic function and handles all events.
138 * Event specific routines are called by this function based
139 * upon the generated event cause.
141 * For the following events, the function just forwards them to upper
142 * layers, optionally recording the change -
143 * - EVENT_LINK_SENSED
144 * - EVENT_MIC_ERR_UNICAST
145 * - EVENT_MIC_ERR_MULTICAST
146 * - EVENT_PORT_RELEASE
152 * - EVENT_DATA_RSSI_LOW
153 * - EVENT_DATA_SNR_LOW
154 * - EVENT_DATA_RSSI_HIGH
155 * - EVENT_DATA_SNR_HIGH
156 * - EVENT_LINK_QUALITY
157 * - EVENT_PRE_BEACON_LOST
158 * - EVENT_IBSS_COALESCED
159 * - EVENT_WEP_ICV_ERR
161 * - EVENT_HOSTWAKE_STAIE
163 * For the following events, no action is taken -
164 * - EVENT_MIB_CHANGED
166 * - EVENT_DUMMY_HOST_WAKEUP_SIGNAL
168 * Rest of the supported events requires driver handling -
169 * - EVENT_DEAUTHENTICATED
170 * - EVENT_DISASSOCIATED
174 * - EVENT_DEEP_SLEEP_AWAKE
176 * - EVENT_ADHOC_BCN_LOST
177 * - EVENT_BG_SCAN_REPORT
178 * - EVENT_WMM_STATUS_CHANGE
181 * - EVENT_BA_STREAM_TIEMOUT
182 * - EVENT_AMSDU_AGGR_CTRL
184 int mwifiex_process_sta_event(struct mwifiex_private
*priv
)
186 struct mwifiex_adapter
*adapter
= priv
->adapter
;
188 u32 eventcause
= adapter
->event_cause
;
189 struct station_info sinfo
;
190 struct mwifiex_assoc_event
*event
;
192 switch (eventcause
) {
193 case EVENT_DUMMY_HOST_WAKEUP_SIGNAL
:
194 dev_err(adapter
->dev
,
195 "invalid EVENT: DUMMY_HOST_WAKEUP_SIGNAL, ignore it\n");
197 case EVENT_LINK_SENSED
:
198 dev_dbg(adapter
->dev
, "event: LINK_SENSED\n");
199 if (!netif_carrier_ok(priv
->netdev
))
200 netif_carrier_on(priv
->netdev
);
201 if (netif_queue_stopped(priv
->netdev
))
202 mwifiex_wake_up_net_dev_queue(priv
->netdev
, adapter
);
205 case EVENT_DEAUTHENTICATED
:
206 dev_dbg(adapter
->dev
, "event: Deauthenticated\n");
207 adapter
->dbg
.num_event_deauth
++;
208 if (priv
->media_connected
)
209 mwifiex_reset_connect_state(priv
);
212 case EVENT_DISASSOCIATED
:
213 dev_dbg(adapter
->dev
, "event: Disassociated\n");
214 adapter
->dbg
.num_event_disassoc
++;
215 if (priv
->media_connected
)
216 mwifiex_reset_connect_state(priv
);
219 case EVENT_LINK_LOST
:
220 dev_dbg(adapter
->dev
, "event: Link lost\n");
221 adapter
->dbg
.num_event_link_lost
++;
222 if (priv
->media_connected
)
223 mwifiex_reset_connect_state(priv
);
227 dev_dbg(adapter
->dev
, "info: EVENT: SLEEP\n");
229 adapter
->ps_state
= PS_STATE_PRE_SLEEP
;
231 mwifiex_check_ps_cond(adapter
);
235 dev_dbg(adapter
->dev
, "info: EVENT: AWAKE\n");
236 if (!adapter
->pps_uapsd_mode
&&
237 priv
->media_connected
&& adapter
->sleep_period
.period
) {
238 adapter
->pps_uapsd_mode
= true;
239 dev_dbg(adapter
->dev
,
240 "event: PPS/UAPSD mode activated\n");
242 adapter
->tx_lock_flag
= false;
243 if (adapter
->pps_uapsd_mode
&& adapter
->gen_null_pkt
) {
244 if (mwifiex_check_last_packet_indication(priv
)) {
245 if (adapter
->data_sent
) {
246 adapter
->ps_state
= PS_STATE_AWAKE
;
247 adapter
->pm_wakeup_card_req
= false;
248 adapter
->pm_wakeup_fw_try
= false;
251 if (!mwifiex_send_null_packet
253 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET
|
254 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET
))
260 adapter
->ps_state
= PS_STATE_AWAKE
;
261 adapter
->pm_wakeup_card_req
= false;
262 adapter
->pm_wakeup_fw_try
= false;
266 case EVENT_DEEP_SLEEP_AWAKE
:
267 adapter
->if_ops
.wakeup_complete(adapter
);
268 dev_dbg(adapter
->dev
, "event: DS_AWAKE\n");
269 if (adapter
->is_deep_sleep
)
270 adapter
->is_deep_sleep
= false;
273 case EVENT_HS_ACT_REQ
:
274 dev_dbg(adapter
->dev
, "event: HS_ACT_REQ\n");
275 ret
= mwifiex_send_cmd_async(priv
,
276 HostCmd_CMD_802_11_HS_CFG_ENH
,
280 case EVENT_MIC_ERR_UNICAST
:
281 dev_dbg(adapter
->dev
, "event: UNICAST MIC ERROR\n");
284 case EVENT_MIC_ERR_MULTICAST
:
285 dev_dbg(adapter
->dev
, "event: MULTICAST MIC ERROR\n");
287 case EVENT_MIB_CHANGED
:
288 case EVENT_INIT_DONE
:
291 case EVENT_ADHOC_BCN_LOST
:
292 dev_dbg(adapter
->dev
, "event: ADHOC_BCN_LOST\n");
293 priv
->adhoc_is_link_sensed
= false;
294 mwifiex_clean_txrx(priv
);
295 if (!netif_queue_stopped(priv
->netdev
))
296 mwifiex_stop_net_dev_queue(priv
->netdev
, adapter
);
297 if (netif_carrier_ok(priv
->netdev
))
298 netif_carrier_off(priv
->netdev
);
301 case EVENT_BG_SCAN_REPORT
:
302 dev_dbg(adapter
->dev
, "event: BGS_REPORT\n");
303 ret
= mwifiex_send_cmd_async(priv
,
304 HostCmd_CMD_802_11_BG_SCAN_QUERY
,
305 HostCmd_ACT_GEN_GET
, 0, NULL
);
308 case EVENT_PORT_RELEASE
:
309 dev_dbg(adapter
->dev
, "event: PORT RELEASE\n");
312 case EVENT_WMM_STATUS_CHANGE
:
313 dev_dbg(adapter
->dev
, "event: WMM status changed\n");
314 ret
= mwifiex_send_cmd_async(priv
, HostCmd_CMD_WMM_GET_STATUS
,
319 cfg80211_cqm_rssi_notify(priv
->netdev
,
320 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW
,
322 mwifiex_send_cmd_async(priv
, HostCmd_CMD_RSSI_INFO
,
323 HostCmd_ACT_GEN_GET
, 0, NULL
);
324 priv
->subsc_evt_rssi_state
= RSSI_LOW_RECVD
;
325 dev_dbg(adapter
->dev
, "event: Beacon RSSI_LOW\n");
328 dev_dbg(adapter
->dev
, "event: Beacon SNR_LOW\n");
331 dev_dbg(adapter
->dev
, "event: MAX_FAIL\n");
333 case EVENT_RSSI_HIGH
:
334 cfg80211_cqm_rssi_notify(priv
->netdev
,
335 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH
,
337 mwifiex_send_cmd_async(priv
, HostCmd_CMD_RSSI_INFO
,
338 HostCmd_ACT_GEN_GET
, 0, NULL
);
339 priv
->subsc_evt_rssi_state
= RSSI_HIGH_RECVD
;
340 dev_dbg(adapter
->dev
, "event: Beacon RSSI_HIGH\n");
343 dev_dbg(adapter
->dev
, "event: Beacon SNR_HIGH\n");
345 case EVENT_DATA_RSSI_LOW
:
346 dev_dbg(adapter
->dev
, "event: Data RSSI_LOW\n");
348 case EVENT_DATA_SNR_LOW
:
349 dev_dbg(adapter
->dev
, "event: Data SNR_LOW\n");
351 case EVENT_DATA_RSSI_HIGH
:
352 dev_dbg(adapter
->dev
, "event: Data RSSI_HIGH\n");
354 case EVENT_DATA_SNR_HIGH
:
355 dev_dbg(adapter
->dev
, "event: Data SNR_HIGH\n");
357 case EVENT_LINK_QUALITY
:
358 dev_dbg(adapter
->dev
, "event: Link Quality\n");
360 case EVENT_PRE_BEACON_LOST
:
361 dev_dbg(adapter
->dev
, "event: Pre-Beacon Lost\n");
363 case EVENT_IBSS_COALESCED
:
364 dev_dbg(adapter
->dev
, "event: IBSS_COALESCED\n");
365 ret
= mwifiex_send_cmd_async(priv
,
366 HostCmd_CMD_802_11_IBSS_COALESCING_STATUS
,
367 HostCmd_ACT_GEN_GET
, 0, NULL
);
370 dev_dbg(adapter
->dev
, "event: ADDBA Request\n");
371 mwifiex_send_cmd_async(priv
, HostCmd_CMD_11N_ADDBA_RSP
,
372 HostCmd_ACT_GEN_SET
, 0,
373 adapter
->event_body
);
376 dev_dbg(adapter
->dev
, "event: DELBA Request\n");
377 mwifiex_11n_delete_ba_stream(priv
, adapter
->event_body
);
379 case EVENT_BA_STREAM_TIEMOUT
:
380 dev_dbg(adapter
->dev
, "event: BA Stream timeout\n");
381 mwifiex_11n_ba_stream_timeout(priv
,
382 (struct host_cmd_ds_11n_batimeout
384 adapter
->event_body
);
386 case EVENT_AMSDU_AGGR_CTRL
:
387 dev_dbg(adapter
->dev
, "event: AMSDU_AGGR_CTRL %d\n",
388 *(u16
*) adapter
->event_body
);
389 adapter
->tx_buf_size
=
390 min(adapter
->curr_tx_buf_size
,
391 le16_to_cpu(*(__le16
*) adapter
->event_body
));
392 dev_dbg(adapter
->dev
, "event: tx_buf_size %d\n",
393 adapter
->tx_buf_size
);
396 case EVENT_WEP_ICV_ERR
:
397 dev_dbg(adapter
->dev
, "event: WEP ICV error\n");
400 case EVENT_BW_CHANGE
:
401 dev_dbg(adapter
->dev
, "event: BW Change\n");
404 case EVENT_HOSTWAKE_STAIE
:
405 dev_dbg(adapter
->dev
, "event: HOSTWAKE_STAIE %d\n", eventcause
);
408 case EVENT_UAP_STA_ASSOC
:
409 memset(&sinfo
, 0, sizeof(sinfo
));
410 event
= (struct mwifiex_assoc_event
*)
411 (adapter
->event_body
+ MWIFIEX_UAP_EVENT_EXTRA_HEADER
);
412 if (le16_to_cpu(event
->type
) == TLV_TYPE_UAP_MGMT_FRAME
) {
415 if (ieee80211_is_assoc_req(event
->frame_control
))
417 else if (ieee80211_is_reassoc_req(event
->frame_control
))
418 /* There will be ETH_ALEN bytes of
419 * current_ap_addr before the re-assoc ies.
424 sinfo
.filled
= STATION_INFO_ASSOC_REQ_IES
;
425 sinfo
.assoc_req_ies
= (u8
*)&event
->data
[len
];
426 len
= (u8
*)sinfo
.assoc_req_ies
-
427 (u8
*)&event
->frame_control
;
428 sinfo
.assoc_req_ies_len
=
429 le16_to_cpu(event
->len
) - (u16
)len
;
432 cfg80211_new_sta(priv
->netdev
, event
->sta_addr
, &sinfo
,
435 case EVENT_UAP_STA_DEAUTH
:
436 cfg80211_del_sta(priv
->netdev
, adapter
->event_body
+
437 MWIFIEX_UAP_EVENT_EXTRA_HEADER
, GFP_KERNEL
);
439 case EVENT_UAP_BSS_IDLE
:
440 priv
->media_connected
= false;
442 case EVENT_UAP_BSS_ACTIVE
:
443 priv
->media_connected
= true;
445 case EVENT_UAP_BSS_START
:
446 dev_dbg(adapter
->dev
, "AP EVENT: event id: %#x\n", eventcause
);
447 memcpy(priv
->netdev
->dev_addr
, adapter
->event_body
+2, ETH_ALEN
);
449 case EVENT_UAP_MIC_COUNTERMEASURES
:
450 /* For future development */
451 dev_dbg(adapter
->dev
, "AP EVENT: event id: %#x\n", eventcause
);
454 dev_dbg(adapter
->dev
, "event: unknown event id: %#x\n",