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path: root/drivers/net/wireless/mwifiex/sta_event.c
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Diffstat (limited to 'drivers/net/wireless/mwifiex/sta_event.c')
-rw-r--r--drivers/net/wireless/mwifiex/sta_event.c406
1 files changed, 406 insertions, 0 deletions
diff --git a/drivers/net/wireless/mwifiex/sta_event.c b/drivers/net/wireless/mwifiex/sta_event.c
new file mode 100644
index 00000000000..fc265cab090
--- /dev/null
+++ b/drivers/net/wireless/mwifiex/sta_event.c
@@ -0,0 +1,406 @@
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 */
43void
44mwifiex_reset_connect_state(struct mwifiex_private *priv)
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
79 priv->sec_info.encryption_mode = 0;
80
81 /* Enable auto data rate */
82 priv->is_data_rate_auto = true;
83 priv->data_rate = 0;
84
85 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
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",
96 priv->prev_ssid.ssid, priv->prev_ssid.ssid_len);
97
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);
101
102 memcpy(&priv->prev_ssid,
103 &priv->curr_bss_params.bss_descriptor.ssid,
104 sizeof(struct mwifiex_802_11_ssid));
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;
118 if (!priv->disconnect) {
119 priv->disconnect = 1;
120 dev_dbg(adapter->dev, "info: successfully disconnected from"
121 " %pM: reason code %d\n", priv->cfg_bssid,
122 WLAN_REASON_DEAUTH_LEAVING);
123 cfg80211_disconnected(priv->netdev,
124 WLAN_REASON_DEAUTH_LEAVING, NULL, 0,
125 GFP_KERNEL);
126 queue_work(priv->workqueue, &priv->cfg_workqueue);
127 }
128 if (!netif_queue_stopped(priv->netdev))
129 netif_stop_queue(priv->netdev);
130 if (netif_carrier_ok(priv->netdev))
131 netif_carrier_off(priv->netdev);
132 /* Reset wireless stats signal info */
133 priv->w_stats.qual.level = 0;
134 priv->w_stats.qual.noise = 0;
135}
136
137/*
138 * This function handles events generated by firmware.
139 *
140 * This is a generic function and handles all events.
141 *
142 * Event specific routines are called by this function based
143 * upon the generated event cause.
144 *
145 * For the following events, the function just forwards them to upper
146 * layers, optionally recording the change -
147 * - EVENT_LINK_SENSED
148 * - EVENT_MIC_ERR_UNICAST
149 * - EVENT_MIC_ERR_MULTICAST
150 * - EVENT_PORT_RELEASE
151 * - EVENT_RSSI_LOW
152 * - EVENT_SNR_LOW
153 * - EVENT_MAX_FAIL
154 * - EVENT_RSSI_HIGH
155 * - EVENT_SNR_HIGH
156 * - EVENT_DATA_RSSI_LOW
157 * - EVENT_DATA_SNR_LOW
158 * - EVENT_DATA_RSSI_HIGH
159 * - EVENT_DATA_SNR_HIGH
160 * - EVENT_LINK_QUALITY
161 * - EVENT_PRE_BEACON_LOST
162 * - EVENT_IBSS_COALESCED
163 * - EVENT_WEP_ICV_ERR
164 * - EVENT_BW_CHANGE
165 * - EVENT_HOSTWAKE_STAIE
166 *
167 * For the following events, no action is taken -
168 * - EVENT_MIB_CHANGED
169 * - EVENT_INIT_DONE
170 * - EVENT_DUMMY_HOST_WAKEUP_SIGNAL
171 *
172 * Rest of the supported events requires driver handling -
173 * - EVENT_DEAUTHENTICATED
174 * - EVENT_DISASSOCIATED
175 * - EVENT_LINK_LOST
176 * - EVENT_PS_SLEEP
177 * - EVENT_PS_AWAKE
178 * - EVENT_DEEP_SLEEP_AWAKE
179 * - EVENT_HS_ACT_REQ
180 * - EVENT_ADHOC_BCN_LOST
181 * - EVENT_BG_SCAN_REPORT
182 * - EVENT_WMM_STATUS_CHANGE
183 * - EVENT_ADDBA
184 * - EVENT_DELBA
185 * - EVENT_BA_STREAM_TIEMOUT
186 * - EVENT_AMSDU_AGGR_CTRL
187 */
188int mwifiex_process_sta_event(struct mwifiex_private *priv)
189{
190 struct mwifiex_adapter *adapter = priv->adapter;
191 int ret = 0;
192 u32 eventcause = adapter->event_cause;
193
194 switch (eventcause) {
195 case EVENT_DUMMY_HOST_WAKEUP_SIGNAL:
196 dev_err(adapter->dev, "invalid EVENT: DUMMY_HOST_WAKEUP_SIGNAL,"
197 " ignoring it\n");
198 break;
199 case EVENT_LINK_SENSED:
200 dev_dbg(adapter->dev, "event: LINK_SENSED\n");
201 if (!netif_carrier_ok(priv->netdev))
202 netif_carrier_on(priv->netdev);
203 if (netif_queue_stopped(priv->netdev))
204 netif_wake_queue(priv->netdev);
205 break;
206
207 case EVENT_DEAUTHENTICATED:
208 dev_dbg(adapter->dev, "event: Deauthenticated\n");
209 adapter->dbg.num_event_deauth++;
210 if (priv->media_connected)
211 mwifiex_reset_connect_state(priv);
212 break;
213
214 case EVENT_DISASSOCIATED:
215 dev_dbg(adapter->dev, "event: Disassociated\n");
216 adapter->dbg.num_event_disassoc++;
217 if (priv->media_connected)
218 mwifiex_reset_connect_state(priv);
219 break;
220
221 case EVENT_LINK_LOST:
222 dev_dbg(adapter->dev, "event: Link lost\n");
223 adapter->dbg.num_event_link_lost++;
224 if (priv->media_connected)
225 mwifiex_reset_connect_state(priv);
226 break;
227
228 case EVENT_PS_SLEEP:
229 dev_dbg(adapter->dev, "info: EVENT: SLEEP\n");
230
231 adapter->ps_state = PS_STATE_PRE_SLEEP;
232
233 mwifiex_check_ps_cond(adapter);
234 break;
235
236 case EVENT_PS_AWAKE:
237 dev_dbg(adapter->dev, "info: EVENT: AWAKE\n");
238 if (!adapter->pps_uapsd_mode &&
239 priv->media_connected &&
240 adapter->sleep_period.period) {
241 adapter->pps_uapsd_mode = true;
242 dev_dbg(adapter->dev,
243 "event: PPS/UAPSD mode activated\n");
244 }
245 adapter->tx_lock_flag = false;
246 if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) {
247 if (mwifiex_check_last_packet_indication(priv)) {
248 if (!adapter->data_sent) {
249 if (!mwifiex_send_null_packet(priv,
250 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET
251 |
252 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET))
253 adapter->ps_state =
254 PS_STATE_SLEEP;
255 return 0;
256 }
257 }
258 }
259 adapter->ps_state = PS_STATE_AWAKE;
260 adapter->pm_wakeup_card_req = false;
261 adapter->pm_wakeup_fw_try = false;
262
263 break;
264
265 case EVENT_DEEP_SLEEP_AWAKE:
266 adapter->if_ops.wakeup_complete(adapter);
267 dev_dbg(adapter->dev, "event: DS_AWAKE\n");
268 if (adapter->is_deep_sleep)
269 adapter->is_deep_sleep = false;
270 break;
271
272 case EVENT_HS_ACT_REQ:
273 dev_dbg(adapter->dev, "event: HS_ACT_REQ\n");
274 ret = mwifiex_send_cmd_async(priv,
275 HostCmd_CMD_802_11_HS_CFG_ENH,
276 0, 0, NULL);
277 break;
278
279 case EVENT_MIC_ERR_UNICAST:
280 dev_dbg(adapter->dev, "event: UNICAST MIC ERROR\n");
281 break;
282
283 case EVENT_MIC_ERR_MULTICAST:
284 dev_dbg(adapter->dev, "event: MULTICAST MIC ERROR\n");
285 break;
286 case EVENT_MIB_CHANGED:
287 case EVENT_INIT_DONE:
288 break;
289
290 case EVENT_ADHOC_BCN_LOST:
291 dev_dbg(adapter->dev, "event: ADHOC_BCN_LOST\n");
292 priv->adhoc_is_link_sensed = false;
293 mwifiex_clean_txrx(priv);
294 if (!netif_queue_stopped(priv->netdev))
295 netif_stop_queue(priv->netdev);
296 if (netif_carrier_ok(priv->netdev))
297 netif_carrier_off(priv->netdev);
298 break;
299
300 case EVENT_BG_SCAN_REPORT:
301 dev_dbg(adapter->dev, "event: BGS_REPORT\n");
302 /* Clear the previous scan result */
303 memset(adapter->scan_table, 0x00,
304 sizeof(struct mwifiex_bssdescriptor) * IW_MAX_AP);
305 adapter->num_in_scan_table = 0;
306 adapter->bcn_buf_end = adapter->bcn_buf;
307 ret = mwifiex_send_cmd_async(priv,
308 HostCmd_CMD_802_11_BG_SCAN_QUERY,
309 HostCmd_ACT_GEN_GET, 0, NULL);
310 break;
311
312 case EVENT_PORT_RELEASE:
313 dev_dbg(adapter->dev, "event: PORT RELEASE\n");
314 break;
315
316 case EVENT_WMM_STATUS_CHANGE:
317 dev_dbg(adapter->dev, "event: WMM status changed\n");
318 ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_WMM_GET_STATUS,
319 0, 0, NULL);
320 break;
321
322 case EVENT_RSSI_LOW:
323 dev_dbg(adapter->dev, "event: Beacon RSSI_LOW\n");
324 break;
325 case EVENT_SNR_LOW:
326 dev_dbg(adapter->dev, "event: Beacon SNR_LOW\n");
327 break;
328 case EVENT_MAX_FAIL:
329 dev_dbg(adapter->dev, "event: MAX_FAIL\n");
330 break;
331 case EVENT_RSSI_HIGH:
332 dev_dbg(adapter->dev, "event: Beacon RSSI_HIGH\n");
333 break;
334 case EVENT_SNR_HIGH:
335 dev_dbg(adapter->dev, "event: Beacon SNR_HIGH\n");
336 break;
337 case EVENT_DATA_RSSI_LOW:
338 dev_dbg(adapter->dev, "event: Data RSSI_LOW\n");
339 break;
340 case EVENT_DATA_SNR_LOW:
341 dev_dbg(adapter->dev, "event: Data SNR_LOW\n");
342 break;
343 case EVENT_DATA_RSSI_HIGH:
344 dev_dbg(adapter->dev, "event: Data RSSI_HIGH\n");
345 break;
346 case EVENT_DATA_SNR_HIGH:
347 dev_dbg(adapter->dev, "event: Data SNR_HIGH\n");
348 break;
349 case EVENT_LINK_QUALITY:
350 dev_dbg(adapter->dev, "event: Link Quality\n");
351 break;
352 case EVENT_PRE_BEACON_LOST:
353 dev_dbg(adapter->dev, "event: Pre-Beacon Lost\n");
354 break;
355 case EVENT_IBSS_COALESCED:
356 dev_dbg(adapter->dev, "event: IBSS_COALESCED\n");
357 ret = mwifiex_send_cmd_async(priv,
358 HostCmd_CMD_802_11_IBSS_COALESCING_STATUS,
359 HostCmd_ACT_GEN_GET, 0, NULL);
360 break;
361 case EVENT_ADDBA:
362 dev_dbg(adapter->dev, "event: ADDBA Request\n");
363 mwifiex_send_cmd_async(priv, HostCmd_CMD_11N_ADDBA_RSP,
364 HostCmd_ACT_GEN_SET, 0,
365 adapter->event_body);
366 break;
367 case EVENT_DELBA:
368 dev_dbg(adapter->dev, "event: DELBA Request\n");
369 mwifiex_11n_delete_ba_stream(priv, adapter->event_body);
370 break;
371 case EVENT_BA_STREAM_TIEMOUT:
372 dev_dbg(adapter->dev, "event: BA Stream timeout\n");
373 mwifiex_11n_ba_stream_timeout(priv,
374 (struct host_cmd_ds_11n_batimeout
375 *)
376 adapter->event_body);
377 break;
378 case EVENT_AMSDU_AGGR_CTRL:
379 dev_dbg(adapter->dev, "event: AMSDU_AGGR_CTRL %d\n",
380 *(u16 *) adapter->event_body);
381 adapter->tx_buf_size =
382 min(adapter->curr_tx_buf_size,
383 le16_to_cpu(*(__le16 *) adapter->event_body));
384 dev_dbg(adapter->dev, "event: tx_buf_size %d\n",
385 adapter->tx_buf_size);
386 break;
387
388 case EVENT_WEP_ICV_ERR:
389 dev_dbg(adapter->dev, "event: WEP ICV error\n");
390 break;
391
392 case EVENT_BW_CHANGE:
393 dev_dbg(adapter->dev, "event: BW Change\n");
394 break;
395
396 case EVENT_HOSTWAKE_STAIE:
397 dev_dbg(adapter->dev, "event: HOSTWAKE_STAIE %d\n", eventcause);
398 break;
399 default:
400 dev_dbg(adapter->dev, "event: unknown event id: %#x\n",
401 eventcause);
402 break;
403 }
404
405 return ret;
406}
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