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authorBing Zhao <bzhao@marvell.com>2011-03-21 21:00:50 -0400
committerJohn W. Linville <linville@tuxdriver.com>2011-03-30 14:15:17 -0400
commit5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e (patch)
treede22c4c414412501e62894de65040bf30db28c64 /drivers/net/wireless/mwifiex/sta_event.c
parent903946e6e21ef4dd678acafb8881cabde9182caf (diff)
wireless: mwifiex: initial commit for Marvell mwifiex driver
This driver adds WiFi support for Marvell 802.11n based chipsets with SDIO interface. Currently only SD8787 is supported. More chipsets will be supported later. drivers/net/wireless/mwifiex/ Signed-off-by: Nishant Sarmukadam <nishants@marvell.com> Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Kiran Divekar <dkiran@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com> Signed-off-by: Marc Yang <yangyang@marvell.com> Signed-off-by: Ramesh Radhakrishnan <rramesh@marvell.com> Signed-off-by: Frank Huang <frankh@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/mwifiex/sta_event.c')
-rw-r--r--drivers/net/wireless/mwifiex/sta_event.c405
1 files changed, 405 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 000000000000..d4a5c1fcefc2
--- /dev/null
+++ b/drivers/net/wireless/mwifiex/sta_event.c
@@ -0,0 +1,405 @@
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 = MWIFIEX_ENCRYPTION_MODE_NONE;
80
81 /* Enable auto data rate */
82 priv->is_data_rate_auto = true;
83 priv->data_rate = 0;
84
85 if (priv->bss_mode == MWIFIEX_BSS_MODE_IBSS) {
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_prepare_cmd(priv, HostCmd_CMD_802_11_HS_CFG_ENH,
275 0, 0, NULL, NULL);
276 break;
277
278 case EVENT_MIC_ERR_UNICAST:
279 dev_dbg(adapter->dev, "event: UNICAST MIC ERROR\n");
280 break;
281
282 case EVENT_MIC_ERR_MULTICAST:
283 dev_dbg(adapter->dev, "event: MULTICAST MIC ERROR\n");
284 break;
285 case EVENT_MIB_CHANGED:
286 case EVENT_INIT_DONE:
287 break;
288
289 case EVENT_ADHOC_BCN_LOST:
290 dev_dbg(adapter->dev, "event: ADHOC_BCN_LOST\n");
291 priv->adhoc_is_link_sensed = false;
292 mwifiex_clean_txrx(priv);
293 if (!netif_queue_stopped(priv->netdev))
294 netif_stop_queue(priv->netdev);
295 if (netif_carrier_ok(priv->netdev))
296 netif_carrier_off(priv->netdev);
297 break;
298
299 case EVENT_BG_SCAN_REPORT:
300 dev_dbg(adapter->dev, "event: BGS_REPORT\n");
301 /* Clear the previous scan result */
302 memset(adapter->scan_table, 0x00,
303 sizeof(struct mwifiex_bssdescriptor) * IW_MAX_AP);
304 adapter->num_in_scan_table = 0;
305 adapter->bcn_buf_end = adapter->bcn_buf;
306 ret = mwifiex_prepare_cmd(priv,
307 HostCmd_CMD_802_11_BG_SCAN_QUERY,
308 HostCmd_ACT_GEN_GET, 0, NULL, NULL);
309 break;
310
311 case EVENT_PORT_RELEASE:
312 dev_dbg(adapter->dev, "event: PORT RELEASE\n");
313 break;
314
315 case EVENT_WMM_STATUS_CHANGE:
316 dev_dbg(adapter->dev, "event: WMM status changed\n");
317 ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_WMM_GET_STATUS,
318 0, 0, NULL, NULL);
319 break;
320
321 case EVENT_RSSI_LOW:
322 dev_dbg(adapter->dev, "event: Beacon RSSI_LOW\n");
323 break;
324 case EVENT_SNR_LOW:
325 dev_dbg(adapter->dev, "event: Beacon SNR_LOW\n");
326 break;
327 case EVENT_MAX_FAIL:
328 dev_dbg(adapter->dev, "event: MAX_FAIL\n");
329 break;
330 case EVENT_RSSI_HIGH:
331 dev_dbg(adapter->dev, "event: Beacon RSSI_HIGH\n");
332 break;
333 case EVENT_SNR_HIGH:
334 dev_dbg(adapter->dev, "event: Beacon SNR_HIGH\n");
335 break;
336 case EVENT_DATA_RSSI_LOW:
337 dev_dbg(adapter->dev, "event: Data RSSI_LOW\n");
338 break;
339 case EVENT_DATA_SNR_LOW:
340 dev_dbg(adapter->dev, "event: Data SNR_LOW\n");
341 break;
342 case EVENT_DATA_RSSI_HIGH:
343 dev_dbg(adapter->dev, "event: Data RSSI_HIGH\n");
344 break;
345 case EVENT_DATA_SNR_HIGH:
346 dev_dbg(adapter->dev, "event: Data SNR_HIGH\n");
347 break;
348 case EVENT_LINK_QUALITY:
349 dev_dbg(adapter->dev, "event: Link Quality\n");
350 break;
351 case EVENT_PRE_BEACON_LOST:
352 dev_dbg(adapter->dev, "event: Pre-Beacon Lost\n");
353 break;
354 case EVENT_IBSS_COALESCED:
355 dev_dbg(adapter->dev, "event: IBSS_COALESCED\n");
356 ret = mwifiex_prepare_cmd(priv,
357 HostCmd_CMD_802_11_IBSS_COALESCING_STATUS,
358 HostCmd_ACT_GEN_GET, 0, NULL, NULL);
359 break;
360 case EVENT_ADDBA:
361 dev_dbg(adapter->dev, "event: ADDBA Request\n");
362 mwifiex_prepare_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP,
363 HostCmd_ACT_GEN_SET, 0, NULL,
364 adapter->event_body);
365 break;
366 case EVENT_DELBA:
367 dev_dbg(adapter->dev, "event: DELBA Request\n");
368 mwifiex_11n_delete_ba_stream(priv, adapter->event_body);
369 break;
370 case EVENT_BA_STREAM_TIEMOUT:
371 dev_dbg(adapter->dev, "event: BA Stream timeout\n");
372 mwifiex_11n_ba_stream_timeout(priv,
373 (struct host_cmd_ds_11n_batimeout
374 *)
375 adapter->event_body);
376 break;
377 case EVENT_AMSDU_AGGR_CTRL:
378 dev_dbg(adapter->dev, "event: AMSDU_AGGR_CTRL %d\n",
379 *(u16 *) adapter->event_body);
380 adapter->tx_buf_size =
381 min(adapter->curr_tx_buf_size,
382 le16_to_cpu(*(__le16 *) adapter->event_body));
383 dev_dbg(adapter->dev, "event: tx_buf_size %d\n",
384 adapter->tx_buf_size);
385 break;
386
387 case EVENT_WEP_ICV_ERR:
388 dev_dbg(adapter->dev, "event: WEP ICV error\n");
389 break;
390
391 case EVENT_BW_CHANGE:
392 dev_dbg(adapter->dev, "event: BW Change\n");
393 break;
394
395 case EVENT_HOSTWAKE_STAIE:
396 dev_dbg(adapter->dev, "event: HOSTWAKE_STAIE %d\n", eventcause);
397 break;
398 default:
399 dev_dbg(adapter->dev, "event: unknown event id: %#x\n",
400 eventcause);
401 break;
402 }
403
404 return ret;
405}
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