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);
131 /* Reset wireless stats signal info */
132 priv->qual_level = 0;
133 priv->qual_noise = 0;
137 * This function handles events generated by firmware.
139 * This is a generic function and handles all events.
141 * Event specific routines are called by this function based
142 * upon the generated event cause.
144 * For the following events, the function just forwards them to upper
145 * layers, optionally recording the change -
146 * - EVENT_LINK_SENSED
147 * - EVENT_MIC_ERR_UNICAST
148 * - EVENT_MIC_ERR_MULTICAST
149 * - EVENT_PORT_RELEASE
155 * - EVENT_DATA_RSSI_LOW
156 * - EVENT_DATA_SNR_LOW
157 * - EVENT_DATA_RSSI_HIGH
158 * - EVENT_DATA_SNR_HIGH
159 * - EVENT_LINK_QUALITY
160 * - EVENT_PRE_BEACON_LOST
161 * - EVENT_IBSS_COALESCED
162 * - EVENT_WEP_ICV_ERR
164 * - EVENT_HOSTWAKE_STAIE
166 * For the following events, no action is taken -
167 * - EVENT_MIB_CHANGED
169 * - EVENT_DUMMY_HOST_WAKEUP_SIGNAL
171 * Rest of the supported events requires driver handling -
172 * - EVENT_DEAUTHENTICATED
173 * - EVENT_DISASSOCIATED
177 * - EVENT_DEEP_SLEEP_AWAKE
179 * - EVENT_ADHOC_BCN_LOST
180 * - EVENT_BG_SCAN_REPORT
181 * - EVENT_WMM_STATUS_CHANGE
184 * - EVENT_BA_STREAM_TIEMOUT
185 * - EVENT_AMSDU_AGGR_CTRL
187 int mwifiex_process_sta_event(struct mwifiex_private *priv)
189 struct mwifiex_adapter *adapter = priv->adapter;
191 u32 eventcause = adapter->event_cause;
193 switch (eventcause) {
194 case EVENT_DUMMY_HOST_WAKEUP_SIGNAL:
195 dev_err(adapter->dev,
196 "invalid EVENT: DUMMY_HOST_WAKEUP_SIGNAL, ignore it\n");
198 case EVENT_LINK_SENSED:
199 dev_dbg(adapter->dev, "event: LINK_SENSED\n");
200 if (!netif_carrier_ok(priv->netdev))
201 netif_carrier_on(priv->netdev);
202 if (netif_queue_stopped(priv->netdev))
203 mwifiex_wake_up_net_dev_queue(priv->netdev, adapter);
206 case EVENT_DEAUTHENTICATED:
207 dev_dbg(adapter->dev, "event: Deauthenticated\n");
208 adapter->dbg.num_event_deauth++;
209 if (priv->media_connected)
210 mwifiex_reset_connect_state(priv);
213 case EVENT_DISASSOCIATED:
214 dev_dbg(adapter->dev, "event: Disassociated\n");
215 adapter->dbg.num_event_disassoc++;
216 if (priv->media_connected)
217 mwifiex_reset_connect_state(priv);
220 case EVENT_LINK_LOST:
221 dev_dbg(adapter->dev, "event: Link lost\n");
222 adapter->dbg.num_event_link_lost++;
223 if (priv->media_connected)
224 mwifiex_reset_connect_state(priv);
228 dev_dbg(adapter->dev, "info: EVENT: SLEEP\n");
230 adapter->ps_state = PS_STATE_PRE_SLEEP;
232 mwifiex_check_ps_cond(adapter);
236 dev_dbg(adapter->dev, "info: EVENT: AWAKE\n");
237 if (!adapter->pps_uapsd_mode &&
238 priv->media_connected && adapter->sleep_period.period) {
239 adapter->pps_uapsd_mode = true;
240 dev_dbg(adapter->dev,
241 "event: PPS/UAPSD mode activated\n");
243 adapter->tx_lock_flag = false;
244 if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) {
245 if (mwifiex_check_last_packet_indication(priv)) {
246 if (adapter->data_sent) {
247 adapter->ps_state = PS_STATE_AWAKE;
248 adapter->pm_wakeup_card_req = false;
249 adapter->pm_wakeup_fw_try = false;
252 if (!mwifiex_send_null_packet
254 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
255 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET))
261 adapter->ps_state = PS_STATE_AWAKE;
262 adapter->pm_wakeup_card_req = false;
263 adapter->pm_wakeup_fw_try = false;
267 case EVENT_DEEP_SLEEP_AWAKE:
268 adapter->if_ops.wakeup_complete(adapter);
269 dev_dbg(adapter->dev, "event: DS_AWAKE\n");
270 if (adapter->is_deep_sleep)
271 adapter->is_deep_sleep = false;
274 case EVENT_HS_ACT_REQ:
275 dev_dbg(adapter->dev, "event: HS_ACT_REQ\n");
276 ret = mwifiex_send_cmd_async(priv,
277 HostCmd_CMD_802_11_HS_CFG_ENH,
281 case EVENT_MIC_ERR_UNICAST:
282 dev_dbg(adapter->dev, "event: UNICAST MIC ERROR\n");
285 case EVENT_MIC_ERR_MULTICAST:
286 dev_dbg(adapter->dev, "event: MULTICAST MIC ERROR\n");
288 case EVENT_MIB_CHANGED:
289 case EVENT_INIT_DONE:
292 case EVENT_ADHOC_BCN_LOST:
293 dev_dbg(adapter->dev, "event: ADHOC_BCN_LOST\n");
294 priv->adhoc_is_link_sensed = false;
295 mwifiex_clean_txrx(priv);
296 if (!netif_queue_stopped(priv->netdev))
297 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
298 if (netif_carrier_ok(priv->netdev))
299 netif_carrier_off(priv->netdev);
302 case EVENT_BG_SCAN_REPORT:
303 dev_dbg(adapter->dev, "event: BGS_REPORT\n");
304 ret = mwifiex_send_cmd_async(priv,
305 HostCmd_CMD_802_11_BG_SCAN_QUERY,
306 HostCmd_ACT_GEN_GET, 0, NULL);
309 case EVENT_PORT_RELEASE:
310 dev_dbg(adapter->dev, "event: PORT RELEASE\n");
313 case EVENT_WMM_STATUS_CHANGE:
314 dev_dbg(adapter->dev, "event: WMM status changed\n");
315 ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_WMM_GET_STATUS,
320 dev_dbg(adapter->dev, "event: Beacon RSSI_LOW\n");
323 dev_dbg(adapter->dev, "event: Beacon SNR_LOW\n");
326 dev_dbg(adapter->dev, "event: MAX_FAIL\n");
328 case EVENT_RSSI_HIGH:
329 dev_dbg(adapter->dev, "event: Beacon RSSI_HIGH\n");
332 dev_dbg(adapter->dev, "event: Beacon SNR_HIGH\n");
334 case EVENT_DATA_RSSI_LOW:
335 dev_dbg(adapter->dev, "event: Data RSSI_LOW\n");
337 case EVENT_DATA_SNR_LOW:
338 dev_dbg(adapter->dev, "event: Data SNR_LOW\n");
340 case EVENT_DATA_RSSI_HIGH:
341 dev_dbg(adapter->dev, "event: Data RSSI_HIGH\n");
343 case EVENT_DATA_SNR_HIGH:
344 dev_dbg(adapter->dev, "event: Data SNR_HIGH\n");
346 case EVENT_LINK_QUALITY:
347 dev_dbg(adapter->dev, "event: Link Quality\n");
349 case EVENT_PRE_BEACON_LOST:
350 dev_dbg(adapter->dev, "event: Pre-Beacon Lost\n");
352 case EVENT_IBSS_COALESCED:
353 dev_dbg(adapter->dev, "event: IBSS_COALESCED\n");
354 ret = mwifiex_send_cmd_async(priv,
355 HostCmd_CMD_802_11_IBSS_COALESCING_STATUS,
356 HostCmd_ACT_GEN_GET, 0, NULL);
359 dev_dbg(adapter->dev, "event: ADDBA Request\n");
360 mwifiex_send_cmd_async(priv, HostCmd_CMD_11N_ADDBA_RSP,
361 HostCmd_ACT_GEN_SET, 0,
362 adapter->event_body);
365 dev_dbg(adapter->dev, "event: DELBA Request\n");
366 mwifiex_11n_delete_ba_stream(priv, adapter->event_body);
368 case EVENT_BA_STREAM_TIEMOUT:
369 dev_dbg(adapter->dev, "event: BA Stream timeout\n");
370 mwifiex_11n_ba_stream_timeout(priv,
371 (struct host_cmd_ds_11n_batimeout
373 adapter->event_body);
375 case EVENT_AMSDU_AGGR_CTRL:
376 dev_dbg(adapter->dev, "event: AMSDU_AGGR_CTRL %d\n",
377 *(u16 *) adapter->event_body);
378 adapter->tx_buf_size =
379 min(adapter->curr_tx_buf_size,
380 le16_to_cpu(*(__le16 *) adapter->event_body));
381 dev_dbg(adapter->dev, "event: tx_buf_size %d\n",
382 adapter->tx_buf_size);
385 case EVENT_WEP_ICV_ERR:
386 dev_dbg(adapter->dev, "event: WEP ICV error\n");
389 case EVENT_BW_CHANGE:
390 dev_dbg(adapter->dev, "event: BW Change\n");
393 case EVENT_HOSTWAKE_STAIE:
394 dev_dbg(adapter->dev, "event: HOSTWAKE_STAIE %d\n", eventcause);
397 dev_dbg(adapter->dev, "event: unknown event id: %#x\n",