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5e6e3a92 BZ |
1 | /* |
2 | * Marvell Wireless LAN device driver: station event handling | |
3 | * | |
4 | * Copyright (C) 2011, Marvell International Ltd. | |
5 | * | |
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. | |
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 | /* | |
29 | * This function resets the connection state. | |
30 | * | |
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. | |
42 | */ | |
43 | void | |
8cc1d523 | 44 | mwifiex_reset_connect_state(struct mwifiex_private *priv, u16 reason_code) |
5e6e3a92 BZ |
45 | { |
46 | struct mwifiex_adapter *adapter = priv->adapter; | |
47 | ||
48 | if (!priv->media_connected) | |
49 | return; | |
50 | ||
51 | dev_dbg(adapter->dev, "info: handles disconnect event\n"); | |
52 | ||
53 | priv->media_connected = false; | |
54 | ||
55 | priv->scan_block = false; | |
56 | ||
57 | /* Free Tx and Rx packets, report disconnect to upper layer */ | |
58 | mwifiex_clean_txrx(priv); | |
59 | ||
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; | |
68 | priv->bcn_nf_avg = 0; | |
69 | priv->rxpd_rate = 0; | |
70 | priv->rxpd_htinfo = 0; | |
71 | priv->sec_info.wpa_enabled = false; | |
72 | priv->sec_info.wpa2_enabled = false; | |
73 | priv->wpa_ie_len = 0; | |
74 | ||
75 | priv->sec_info.wapi_enabled = false; | |
76 | priv->wapi_ie_len = 0; | |
77 | priv->sec_info.wapi_key_on = false; | |
78 | ||
2be50b8d | 79 | priv->sec_info.encryption_mode = 0; |
5e6e3a92 BZ |
80 | |
81 | /* Enable auto data rate */ | |
82 | priv->is_data_rate_auto = true; | |
83 | priv->data_rate = 0; | |
84 | ||
eecd8250 | 85 | if (priv->bss_mode == NL80211_IFTYPE_ADHOC) { |
5e6e3a92 BZ |
86 | priv->adhoc_state = ADHOC_IDLE; |
87 | priv->adhoc_is_link_sensed = false; | |
88 | } | |
89 | ||
90 | /* | |
91 | * Memorize the previous SSID and BSSID so | |
92 | * it could be used for re-assoc | |
93 | */ | |
94 | ||
95 | dev_dbg(adapter->dev, "info: previous SSID=%s, SSID len=%u\n", | |
500f747c | 96 | priv->prev_ssid.ssid, priv->prev_ssid.ssid_len); |
5e6e3a92 BZ |
97 | |
98 | dev_dbg(adapter->dev, "info: current SSID=%s, SSID len=%u\n", | |
500f747c YAP |
99 | priv->curr_bss_params.bss_descriptor.ssid.ssid, |
100 | priv->curr_bss_params.bss_descriptor.ssid.ssid_len); | |
5e6e3a92 BZ |
101 | |
102 | memcpy(&priv->prev_ssid, | |
103 | &priv->curr_bss_params.bss_descriptor.ssid, | |
b9be5f39 | 104 | sizeof(struct cfg80211_ssid)); |
5e6e3a92 BZ |
105 | |
106 | memcpy(priv->prev_bssid, | |
107 | priv->curr_bss_params.bss_descriptor.mac_address, ETH_ALEN); | |
108 | ||
109 | /* Need to erase the current SSID and BSSID info */ | |
110 | memset(&priv->curr_bss_params, 0x00, sizeof(priv->curr_bss_params)); | |
111 | ||
112 | adapter->tx_lock_flag = false; | |
113 | adapter->pps_uapsd_mode = false; | |
114 | ||
115 | if (adapter->num_cmd_timeout && adapter->curr_cmd) | |
116 | return; | |
117 | priv->media_connected = false; | |
500f747c YAP |
118 | dev_dbg(adapter->dev, |
119 | "info: successfully disconnected from %pM: reason code %d\n", | |
8cc1d523 | 120 | priv->cfg_bssid, reason_code); |
38c9d664 | 121 | if (priv->bss_mode == NL80211_IFTYPE_STATION) { |
8cc1d523 AK |
122 | cfg80211_disconnected(priv->netdev, reason_code, NULL, 0, |
123 | GFP_KERNEL); | |
5e6e3a92 | 124 | } |
38c9d664 AK |
125 | memset(priv->cfg_bssid, 0, ETH_ALEN); |
126 | ||
47411a06 | 127 | mwifiex_stop_net_dev_queue(priv->netdev, adapter); |
5e6e3a92 BZ |
128 | if (netif_carrier_ok(priv->netdev)) |
129 | netif_carrier_off(priv->netdev); | |
5e6e3a92 BZ |
130 | } |
131 | ||
132 | /* | |
133 | * This function handles events generated by firmware. | |
134 | * | |
135 | * This is a generic function and handles all events. | |
136 | * | |
137 | * Event specific routines are called by this function based | |
138 | * upon the generated event cause. | |
139 | * | |
140 | * For the following events, the function just forwards them to upper | |
141 | * layers, optionally recording the change - | |
142 | * - EVENT_LINK_SENSED | |
143 | * - EVENT_MIC_ERR_UNICAST | |
144 | * - EVENT_MIC_ERR_MULTICAST | |
145 | * - EVENT_PORT_RELEASE | |
146 | * - EVENT_RSSI_LOW | |
147 | * - EVENT_SNR_LOW | |
148 | * - EVENT_MAX_FAIL | |
149 | * - EVENT_RSSI_HIGH | |
150 | * - EVENT_SNR_HIGH | |
151 | * - EVENT_DATA_RSSI_LOW | |
152 | * - EVENT_DATA_SNR_LOW | |
153 | * - EVENT_DATA_RSSI_HIGH | |
154 | * - EVENT_DATA_SNR_HIGH | |
155 | * - EVENT_LINK_QUALITY | |
156 | * - EVENT_PRE_BEACON_LOST | |
157 | * - EVENT_IBSS_COALESCED | |
158 | * - EVENT_WEP_ICV_ERR | |
159 | * - EVENT_BW_CHANGE | |
160 | * - EVENT_HOSTWAKE_STAIE | |
161 | * | |
162 | * For the following events, no action is taken - | |
163 | * - EVENT_MIB_CHANGED | |
164 | * - EVENT_INIT_DONE | |
165 | * - EVENT_DUMMY_HOST_WAKEUP_SIGNAL | |
166 | * | |
167 | * Rest of the supported events requires driver handling - | |
168 | * - EVENT_DEAUTHENTICATED | |
169 | * - EVENT_DISASSOCIATED | |
170 | * - EVENT_LINK_LOST | |
171 | * - EVENT_PS_SLEEP | |
172 | * - EVENT_PS_AWAKE | |
173 | * - EVENT_DEEP_SLEEP_AWAKE | |
174 | * - EVENT_HS_ACT_REQ | |
175 | * - EVENT_ADHOC_BCN_LOST | |
176 | * - EVENT_BG_SCAN_REPORT | |
177 | * - EVENT_WMM_STATUS_CHANGE | |
178 | * - EVENT_ADDBA | |
179 | * - EVENT_DELBA | |
180 | * - EVENT_BA_STREAM_TIEMOUT | |
181 | * - EVENT_AMSDU_AGGR_CTRL | |
182 | */ | |
183 | int mwifiex_process_sta_event(struct mwifiex_private *priv) | |
184 | { | |
185 | struct mwifiex_adapter *adapter = priv->adapter; | |
3d99d987 | 186 | int ret = 0; |
5e6e3a92 | 187 | u32 eventcause = adapter->event_cause; |
8cc1d523 | 188 | u16 ctrl, reason_code; |
5e6e3a92 BZ |
189 | |
190 | switch (eventcause) { | |
191 | case EVENT_DUMMY_HOST_WAKEUP_SIGNAL: | |
500f747c YAP |
192 | dev_err(adapter->dev, |
193 | "invalid EVENT: DUMMY_HOST_WAKEUP_SIGNAL, ignore it\n"); | |
5e6e3a92 BZ |
194 | break; |
195 | case EVENT_LINK_SENSED: | |
196 | dev_dbg(adapter->dev, "event: LINK_SENSED\n"); | |
197 | if (!netif_carrier_ok(priv->netdev)) | |
198 | netif_carrier_on(priv->netdev); | |
47411a06 | 199 | mwifiex_wake_up_net_dev_queue(priv->netdev, adapter); |
5e6e3a92 BZ |
200 | break; |
201 | ||
202 | case EVENT_DEAUTHENTICATED: | |
203 | dev_dbg(adapter->dev, "event: Deauthenticated\n"); | |
204 | adapter->dbg.num_event_deauth++; | |
8cc1d523 AK |
205 | if (priv->media_connected) { |
206 | reason_code = | |
207 | le16_to_cpu(*(__le16 *)adapter->event_body); | |
208 | mwifiex_reset_connect_state(priv, reason_code); | |
209 | } | |
5e6e3a92 BZ |
210 | break; |
211 | ||
212 | case EVENT_DISASSOCIATED: | |
213 | dev_dbg(adapter->dev, "event: Disassociated\n"); | |
214 | adapter->dbg.num_event_disassoc++; | |
8cc1d523 AK |
215 | if (priv->media_connected) { |
216 | reason_code = | |
217 | le16_to_cpu(*(__le16 *)adapter->event_body); | |
218 | mwifiex_reset_connect_state(priv, reason_code); | |
219 | } | |
5e6e3a92 BZ |
220 | break; |
221 | ||
222 | case EVENT_LINK_LOST: | |
223 | dev_dbg(adapter->dev, "event: Link lost\n"); | |
224 | adapter->dbg.num_event_link_lost++; | |
8cc1d523 AK |
225 | if (priv->media_connected) { |
226 | reason_code = | |
227 | le16_to_cpu(*(__le16 *)adapter->event_body); | |
228 | mwifiex_reset_connect_state(priv, reason_code); | |
229 | } | |
5e6e3a92 BZ |
230 | break; |
231 | ||
232 | case EVENT_PS_SLEEP: | |
233 | dev_dbg(adapter->dev, "info: EVENT: SLEEP\n"); | |
234 | ||
235 | adapter->ps_state = PS_STATE_PRE_SLEEP; | |
236 | ||
237 | mwifiex_check_ps_cond(adapter); | |
238 | break; | |
239 | ||
240 | case EVENT_PS_AWAKE: | |
241 | dev_dbg(adapter->dev, "info: EVENT: AWAKE\n"); | |
242 | if (!adapter->pps_uapsd_mode && | |
500f747c | 243 | priv->media_connected && adapter->sleep_period.period) { |
5e6e3a92 BZ |
244 | adapter->pps_uapsd_mode = true; |
245 | dev_dbg(adapter->dev, | |
246 | "event: PPS/UAPSD mode activated\n"); | |
247 | } | |
248 | adapter->tx_lock_flag = false; | |
249 | if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) { | |
250 | if (mwifiex_check_last_packet_indication(priv)) { | |
500f747c YAP |
251 | if (adapter->data_sent) { |
252 | adapter->ps_state = PS_STATE_AWAKE; | |
253 | adapter->pm_wakeup_card_req = false; | |
254 | adapter->pm_wakeup_fw_try = false; | |
255 | break; | |
256 | } | |
257 | if (!mwifiex_send_null_packet | |
258 | (priv, | |
259 | MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET | | |
260 | MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) | |
5e6e3a92 BZ |
261 | adapter->ps_state = |
262 | PS_STATE_SLEEP; | |
263 | return 0; | |
5e6e3a92 BZ |
264 | } |
265 | } | |
266 | adapter->ps_state = PS_STATE_AWAKE; | |
267 | adapter->pm_wakeup_card_req = false; | |
268 | adapter->pm_wakeup_fw_try = false; | |
269 | ||
270 | break; | |
271 | ||
272 | case EVENT_DEEP_SLEEP_AWAKE: | |
273 | adapter->if_ops.wakeup_complete(adapter); | |
274 | dev_dbg(adapter->dev, "event: DS_AWAKE\n"); | |
275 | if (adapter->is_deep_sleep) | |
276 | adapter->is_deep_sleep = false; | |
277 | break; | |
278 | ||
279 | case EVENT_HS_ACT_REQ: | |
280 | dev_dbg(adapter->dev, "event: HS_ACT_REQ\n"); | |
600f5d90 AK |
281 | ret = mwifiex_send_cmd_async(priv, |
282 | HostCmd_CMD_802_11_HS_CFG_ENH, | |
283 | 0, 0, NULL); | |
5e6e3a92 BZ |
284 | break; |
285 | ||
286 | case EVENT_MIC_ERR_UNICAST: | |
287 | dev_dbg(adapter->dev, "event: UNICAST MIC ERROR\n"); | |
9c7ff737 AK |
288 | cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid, |
289 | NL80211_KEYTYPE_PAIRWISE, | |
290 | -1, NULL, GFP_KERNEL); | |
5e6e3a92 BZ |
291 | break; |
292 | ||
293 | case EVENT_MIC_ERR_MULTICAST: | |
294 | dev_dbg(adapter->dev, "event: MULTICAST MIC ERROR\n"); | |
9c7ff737 AK |
295 | cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid, |
296 | NL80211_KEYTYPE_GROUP, | |
297 | -1, NULL, GFP_KERNEL); | |
5e6e3a92 BZ |
298 | break; |
299 | case EVENT_MIB_CHANGED: | |
300 | case EVENT_INIT_DONE: | |
301 | break; | |
302 | ||
303 | case EVENT_ADHOC_BCN_LOST: | |
304 | dev_dbg(adapter->dev, "event: ADHOC_BCN_LOST\n"); | |
305 | priv->adhoc_is_link_sensed = false; | |
306 | mwifiex_clean_txrx(priv); | |
47411a06 | 307 | mwifiex_stop_net_dev_queue(priv->netdev, adapter); |
5e6e3a92 BZ |
308 | if (netif_carrier_ok(priv->netdev)) |
309 | netif_carrier_off(priv->netdev); | |
310 | break; | |
311 | ||
312 | case EVENT_BG_SCAN_REPORT: | |
313 | dev_dbg(adapter->dev, "event: BGS_REPORT\n"); | |
600f5d90 AK |
314 | ret = mwifiex_send_cmd_async(priv, |
315 | HostCmd_CMD_802_11_BG_SCAN_QUERY, | |
316 | HostCmd_ACT_GEN_GET, 0, NULL); | |
5e6e3a92 BZ |
317 | break; |
318 | ||
319 | case EVENT_PORT_RELEASE: | |
320 | dev_dbg(adapter->dev, "event: PORT RELEASE\n"); | |
321 | break; | |
322 | ||
323 | case EVENT_WMM_STATUS_CHANGE: | |
324 | dev_dbg(adapter->dev, "event: WMM status changed\n"); | |
600f5d90 AK |
325 | ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_WMM_GET_STATUS, |
326 | 0, 0, NULL); | |
5e6e3a92 BZ |
327 | break; |
328 | ||
329 | case EVENT_RSSI_LOW: | |
fa444bf8 AK |
330 | cfg80211_cqm_rssi_notify(priv->netdev, |
331 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, | |
332 | GFP_KERNEL); | |
333 | mwifiex_send_cmd_async(priv, HostCmd_CMD_RSSI_INFO, | |
334 | HostCmd_ACT_GEN_GET, 0, NULL); | |
335 | priv->subsc_evt_rssi_state = RSSI_LOW_RECVD; | |
5e6e3a92 BZ |
336 | dev_dbg(adapter->dev, "event: Beacon RSSI_LOW\n"); |
337 | break; | |
338 | case EVENT_SNR_LOW: | |
339 | dev_dbg(adapter->dev, "event: Beacon SNR_LOW\n"); | |
340 | break; | |
341 | case EVENT_MAX_FAIL: | |
342 | dev_dbg(adapter->dev, "event: MAX_FAIL\n"); | |
343 | break; | |
344 | case EVENT_RSSI_HIGH: | |
fa444bf8 AK |
345 | cfg80211_cqm_rssi_notify(priv->netdev, |
346 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, | |
347 | GFP_KERNEL); | |
348 | mwifiex_send_cmd_async(priv, HostCmd_CMD_RSSI_INFO, | |
349 | HostCmd_ACT_GEN_GET, 0, NULL); | |
350 | priv->subsc_evt_rssi_state = RSSI_HIGH_RECVD; | |
5e6e3a92 BZ |
351 | dev_dbg(adapter->dev, "event: Beacon RSSI_HIGH\n"); |
352 | break; | |
353 | case EVENT_SNR_HIGH: | |
354 | dev_dbg(adapter->dev, "event: Beacon SNR_HIGH\n"); | |
355 | break; | |
356 | case EVENT_DATA_RSSI_LOW: | |
357 | dev_dbg(adapter->dev, "event: Data RSSI_LOW\n"); | |
358 | break; | |
359 | case EVENT_DATA_SNR_LOW: | |
360 | dev_dbg(adapter->dev, "event: Data SNR_LOW\n"); | |
361 | break; | |
362 | case EVENT_DATA_RSSI_HIGH: | |
363 | dev_dbg(adapter->dev, "event: Data RSSI_HIGH\n"); | |
364 | break; | |
365 | case EVENT_DATA_SNR_HIGH: | |
366 | dev_dbg(adapter->dev, "event: Data SNR_HIGH\n"); | |
367 | break; | |
368 | case EVENT_LINK_QUALITY: | |
369 | dev_dbg(adapter->dev, "event: Link Quality\n"); | |
370 | break; | |
371 | case EVENT_PRE_BEACON_LOST: | |
372 | dev_dbg(adapter->dev, "event: Pre-Beacon Lost\n"); | |
373 | break; | |
374 | case EVENT_IBSS_COALESCED: | |
375 | dev_dbg(adapter->dev, "event: IBSS_COALESCED\n"); | |
600f5d90 | 376 | ret = mwifiex_send_cmd_async(priv, |
5e6e3a92 | 377 | HostCmd_CMD_802_11_IBSS_COALESCING_STATUS, |
600f5d90 | 378 | HostCmd_ACT_GEN_GET, 0, NULL); |
5e6e3a92 BZ |
379 | break; |
380 | case EVENT_ADDBA: | |
381 | dev_dbg(adapter->dev, "event: ADDBA Request\n"); | |
600f5d90 AK |
382 | mwifiex_send_cmd_async(priv, HostCmd_CMD_11N_ADDBA_RSP, |
383 | HostCmd_ACT_GEN_SET, 0, | |
384 | adapter->event_body); | |
5e6e3a92 BZ |
385 | break; |
386 | case EVENT_DELBA: | |
387 | dev_dbg(adapter->dev, "event: DELBA Request\n"); | |
388 | mwifiex_11n_delete_ba_stream(priv, adapter->event_body); | |
389 | break; | |
390 | case EVENT_BA_STREAM_TIEMOUT: | |
391 | dev_dbg(adapter->dev, "event: BA Stream timeout\n"); | |
392 | mwifiex_11n_ba_stream_timeout(priv, | |
393 | (struct host_cmd_ds_11n_batimeout | |
394 | *) | |
395 | adapter->event_body); | |
396 | break; | |
397 | case EVENT_AMSDU_AGGR_CTRL: | |
8dd4372e BZ |
398 | ctrl = le16_to_cpu(*(__le16 *)adapter->event_body); |
399 | dev_dbg(adapter->dev, "event: AMSDU_AGGR_CTRL %d\n", ctrl); | |
400 | ||
5e6e3a92 | 401 | adapter->tx_buf_size = |
8dd4372e | 402 | min_t(u16, adapter->curr_tx_buf_size, ctrl); |
5e6e3a92 | 403 | dev_dbg(adapter->dev, "event: tx_buf_size %d\n", |
500f747c | 404 | adapter->tx_buf_size); |
5e6e3a92 BZ |
405 | break; |
406 | ||
407 | case EVENT_WEP_ICV_ERR: | |
408 | dev_dbg(adapter->dev, "event: WEP ICV error\n"); | |
409 | break; | |
410 | ||
411 | case EVENT_BW_CHANGE: | |
412 | dev_dbg(adapter->dev, "event: BW Change\n"); | |
413 | break; | |
414 | ||
415 | case EVENT_HOSTWAKE_STAIE: | |
416 | dev_dbg(adapter->dev, "event: HOSTWAKE_STAIE %d\n", eventcause); | |
417 | break; | |
e568634a | 418 | |
eab1c76b SP |
419 | case EVENT_REMAIN_ON_CHAN_EXPIRED: |
420 | dev_dbg(adapter->dev, "event: Remain on channel expired\n"); | |
421 | cfg80211_remain_on_channel_expired(priv->wdev, | |
422 | priv->roc_cfg.cookie, | |
423 | &priv->roc_cfg.chan, | |
eab1c76b SP |
424 | GFP_ATOMIC); |
425 | ||
426 | memset(&priv->roc_cfg, 0x00, sizeof(struct mwifiex_roc_cfg)); | |
427 | ||
428 | break; | |
429 | ||
5e6e3a92 BZ |
430 | default: |
431 | dev_dbg(adapter->dev, "event: unknown event id: %#x\n", | |
500f747c | 432 | eventcause); |
5e6e3a92 BZ |
433 | break; |
434 | } | |
435 | ||
436 | return ret; | |
437 | } |