fishHEADmaster

1 files changed, 437 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 0000000..41aafc7
--- /dev/null
+++ b/drivers/net/wireless/mwifiex/sta_event.c
@@ -0,0 +1,437 @@
+/*
+ * Marvell Wireless LAN device driver: station event handling
+ *
+ * Copyright (C) 2011, Marvell International Ltd.
+ *
+ * This software file (the "File") is distributed by Marvell International
+ * Ltd. under the terms of the GNU General Public License Version 2, June 1991
+ * (the "License").  You may use, redistribute and/or modify this File in
+ * accordance with the terms and conditions of the License, a copy of which
+ * is available by writing to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
+ * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
+ *
+ * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
+ * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
+ * this warranty disclaimer.
+ */
+
+#include "decl.h"
+#include "ioctl.h"
+#include "util.h"
+#include "fw.h"
+#include "main.h"
+#include "wmm.h"
+#include "11n.h"
+
+/*
+ * This function resets the connection state.
+ *
+ * The function is invoked after receiving a disconnect event from firmware,
+ * and performs the following actions -
+ *      - Set media status to disconnected
+ *      - Clean up Tx and Rx packets
+ *      - Resets SNR/NF/RSSI value in driver
+ *      - Resets security configurations in driver
+ *      - Enables auto data rate
+ *      - Saves the previous SSID and BSSID so that they can
+ *        be used for re-association, if required
+ *      - Erases current SSID and BSSID information
+ *      - Sends a disconnect event to upper layers/applications.
+ */
+void
+mwifiex_reset_connect_state(struct mwifiex_private *priv, u16 reason_code)
+{
+	struct mwifiex_adapter *adapter = priv->adapter;
+
+	if (!priv->media_connected)
+		return;
+
+	dev_dbg(adapter->dev, "info: handles disconnect event\n");
+
+	priv->media_connected = false;
+
+	priv->scan_block = false;
+
+	/* Free Tx and Rx packets, report disconnect to upper layer */
+	mwifiex_clean_txrx(priv);
+
+	/* Reset SNR/NF/RSSI values */
+	priv->data_rssi_last = 0;
+	priv->data_nf_last = 0;
+	priv->data_rssi_avg = 0;
+	priv->data_nf_avg = 0;
+	priv->bcn_rssi_last = 0;
+	priv->bcn_nf_last = 0;
+	priv->bcn_rssi_avg = 0;
+	priv->bcn_nf_avg = 0;
+	priv->rxpd_rate = 0;
+	priv->rxpd_htinfo = 0;
+	priv->sec_info.wpa_enabled = false;
+	priv->sec_info.wpa2_enabled = false;
+	priv->wpa_ie_len = 0;
+
+	priv->sec_info.wapi_enabled = false;
+	priv->wapi_ie_len = 0;
+	priv->sec_info.wapi_key_on = false;
+
+	priv->sec_info.encryption_mode = 0;
+
+	/* Enable auto data rate */
+	priv->is_data_rate_auto = true;
+	priv->data_rate = 0;
+
+	if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
+		priv->adhoc_state = ADHOC_IDLE;
+		priv->adhoc_is_link_sensed = false;
+	}
+
+	/*
+	 * Memorize the previous SSID and BSSID so
+	 * it could be used for re-assoc
+	 */
+
+	dev_dbg(adapter->dev, "info: previous SSID=%s, SSID len=%u\n",
+		priv->prev_ssid.ssid, priv->prev_ssid.ssid_len);
+
+	dev_dbg(adapter->dev, "info: current SSID=%s, SSID len=%u\n",
+		priv->curr_bss_params.bss_descriptor.ssid.ssid,
+		priv->curr_bss_params.bss_descriptor.ssid.ssid_len);
+
+	memcpy(&priv->prev_ssid,
+	       &priv->curr_bss_params.bss_descriptor.ssid,
+	       sizeof(struct cfg80211_ssid));
+
+	memcpy(priv->prev_bssid,
+	       priv->curr_bss_params.bss_descriptor.mac_address, ETH_ALEN);
+
+	/* Need to erase the current SSID and BSSID info */
+	memset(&priv->curr_bss_params, 0x00, sizeof(priv->curr_bss_params));
+
+	adapter->tx_lock_flag = false;
+	adapter->pps_uapsd_mode = false;
+
+	if (adapter->num_cmd_timeout && adapter->curr_cmd)
+		return;
+	priv->media_connected = false;
+	dev_dbg(adapter->dev,
+		"info: successfully disconnected from %pM: reason code %d\n",
+		priv->cfg_bssid, reason_code);
+	if (priv->bss_mode == NL80211_IFTYPE_STATION) {
+		cfg80211_disconnected(priv->netdev, reason_code, NULL, 0,
+				      GFP_KERNEL);
+	}
+	memset(priv->cfg_bssid, 0, ETH_ALEN);
+
+	mwifiex_stop_net_dev_queue(priv->netdev, adapter);
+	if (netif_carrier_ok(priv->netdev))
+		netif_carrier_off(priv->netdev);
+}
+
+/*
+ * This function handles events generated by firmware.
+ *
+ * This is a generic function and handles all events.
+ *
+ * Event specific routines are called by this function based
+ * upon the generated event cause.
+ *
+ * For the following events, the function just forwards them to upper
+ * layers, optionally recording the change -
+ *      - EVENT_LINK_SENSED
+ *      - EVENT_MIC_ERR_UNICAST
+ *      - EVENT_MIC_ERR_MULTICAST
+ *      - EVENT_PORT_RELEASE
+ *      - EVENT_RSSI_LOW
+ *      - EVENT_SNR_LOW
+ *      - EVENT_MAX_FAIL
+ *      - EVENT_RSSI_HIGH
+ *      - EVENT_SNR_HIGH
+ *      - EVENT_DATA_RSSI_LOW
+ *      - EVENT_DATA_SNR_LOW
+ *      - EVENT_DATA_RSSI_HIGH
+ *      - EVENT_DATA_SNR_HIGH
+ *      - EVENT_LINK_QUALITY
+ *      - EVENT_PRE_BEACON_LOST
+ *      - EVENT_IBSS_COALESCED
+ *      - EVENT_WEP_ICV_ERR
+ *      - EVENT_BW_CHANGE
+ *      - EVENT_HOSTWAKE_STAIE
+  *
+ * For the following events, no action is taken -
+ *      - EVENT_MIB_CHANGED
+ *      - EVENT_INIT_DONE
+ *      - EVENT_DUMMY_HOST_WAKEUP_SIGNAL
+ *
+ * Rest of the supported events requires driver handling -
+ *      - EVENT_DEAUTHENTICATED
+ *      - EVENT_DISASSOCIATED
+ *      - EVENT_LINK_LOST
+ *      - EVENT_PS_SLEEP
+ *      - EVENT_PS_AWAKE
+ *      - EVENT_DEEP_SLEEP_AWAKE
+ *      - EVENT_HS_ACT_REQ
+ *      - EVENT_ADHOC_BCN_LOST
+ *      - EVENT_BG_SCAN_REPORT
+ *      - EVENT_WMM_STATUS_CHANGE
+ *      - EVENT_ADDBA
+ *      - EVENT_DELBA
+ *      - EVENT_BA_STREAM_TIEMOUT
+ *      - EVENT_AMSDU_AGGR_CTRL
+ */
+int mwifiex_process_sta_event(struct mwifiex_private *priv)
+{
+	struct mwifiex_adapter *adapter = priv->adapter;
+	int ret = 0;
+	u32 eventcause = adapter->event_cause;
+	u16 ctrl, reason_code;
+
+	switch (eventcause) {
+	case EVENT_DUMMY_HOST_WAKEUP_SIGNAL:
+		dev_err(adapter->dev,
+			"invalid EVENT: DUMMY_HOST_WAKEUP_SIGNAL, ignore it\n");
+		break;
+	case EVENT_LINK_SENSED:
+		dev_dbg(adapter->dev, "event: LINK_SENSED\n");
+		if (!netif_carrier_ok(priv->netdev))
+			netif_carrier_on(priv->netdev);
+		mwifiex_wake_up_net_dev_queue(priv->netdev, adapter);
+		break;
+
+	case EVENT_DEAUTHENTICATED:
+		dev_dbg(adapter->dev, "event: Deauthenticated\n");
+		adapter->dbg.num_event_deauth++;
+		if (priv->media_connected) {
+			reason_code =
+				le16_to_cpu(*(__le16 *)adapter->event_body);
+			mwifiex_reset_connect_state(priv, reason_code);
+		}
+		break;
+
+	case EVENT_DISASSOCIATED:
+		dev_dbg(adapter->dev, "event: Disassociated\n");
+		adapter->dbg.num_event_disassoc++;
+		if (priv->media_connected) {
+			reason_code =
+				le16_to_cpu(*(__le16 *)adapter->event_body);
+			mwifiex_reset_connect_state(priv, reason_code);
+		}
+		break;
+
+	case EVENT_LINK_LOST:
+		dev_dbg(adapter->dev, "event: Link lost\n");
+		adapter->dbg.num_event_link_lost++;
+		if (priv->media_connected) {
+			reason_code =
+				le16_to_cpu(*(__le16 *)adapter->event_body);
+			mwifiex_reset_connect_state(priv, reason_code);
+		}
+		break;
+
+	case EVENT_PS_SLEEP:
+		dev_dbg(adapter->dev, "info: EVENT: SLEEP\n");
+
+		adapter->ps_state = PS_STATE_PRE_SLEEP;
+
+		mwifiex_check_ps_cond(adapter);
+		break;
+
+	case EVENT_PS_AWAKE:
+		dev_dbg(adapter->dev, "info: EVENT: AWAKE\n");
+		if (!adapter->pps_uapsd_mode &&
+		    priv->media_connected && adapter->sleep_period.period) {
+				adapter->pps_uapsd_mode = true;
+				dev_dbg(adapter->dev,
+					"event: PPS/UAPSD mode activated\n");
+		}
+		adapter->tx_lock_flag = false;
+		if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) {
+			if (mwifiex_check_last_packet_indication(priv)) {
+				if (adapter->data_sent) {
+					adapter->ps_state = PS_STATE_AWAKE;
+					adapter->pm_wakeup_card_req = false;
+					adapter->pm_wakeup_fw_try = false;
+					break;
+				}
+				if (!mwifiex_send_null_packet
+					(priv,
+					 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
+					 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET))
+						adapter->ps_state =
+							PS_STATE_SLEEP;
+					return 0;
+			}
+		}
+		adapter->ps_state = PS_STATE_AWAKE;
+		adapter->pm_wakeup_card_req = false;
+		adapter->pm_wakeup_fw_try = false;
+
+		break;
+
+	case EVENT_DEEP_SLEEP_AWAKE:
+		adapter->if_ops.wakeup_complete(adapter);
+		dev_dbg(adapter->dev, "event: DS_AWAKE\n");
+		if (adapter->is_deep_sleep)
+			adapter->is_deep_sleep = false;
+		break;
+
+	case EVENT_HS_ACT_REQ:
+		dev_dbg(adapter->dev, "event: HS_ACT_REQ\n");
+		ret = mwifiex_send_cmd_async(priv,
+					     HostCmd_CMD_802_11_HS_CFG_ENH,
+					     0, 0, NULL);
+		break;
+
+	case EVENT_MIC_ERR_UNICAST:
+		dev_dbg(adapter->dev, "event: UNICAST MIC ERROR\n");
+		cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid,
+					     NL80211_KEYTYPE_PAIRWISE,
+					     -1, NULL, GFP_KERNEL);
+		break;
+
+	case EVENT_MIC_ERR_MULTICAST:
+		dev_dbg(adapter->dev, "event: MULTICAST MIC ERROR\n");
+		cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid,
+					     NL80211_KEYTYPE_GROUP,
+					     -1, NULL, GFP_KERNEL);
+		break;
+	case EVENT_MIB_CHANGED:
+	case EVENT_INIT_DONE:
+		break;
+
+	case EVENT_ADHOC_BCN_LOST:
+		dev_dbg(adapter->dev, "event: ADHOC_BCN_LOST\n");
+		priv->adhoc_is_link_sensed = false;
+		mwifiex_clean_txrx(priv);
+		mwifiex_stop_net_dev_queue(priv->netdev, adapter);
+		if (netif_carrier_ok(priv->netdev))
+			netif_carrier_off(priv->netdev);
+		break;
+
+	case EVENT_BG_SCAN_REPORT:
+		dev_dbg(adapter->dev, "event: BGS_REPORT\n");
+		ret = mwifiex_send_cmd_async(priv,
+					     HostCmd_CMD_802_11_BG_SCAN_QUERY,
+					     HostCmd_ACT_GEN_GET, 0, NULL);
+		break;
+
+	case EVENT_PORT_RELEASE:
+		dev_dbg(adapter->dev, "event: PORT RELEASE\n");
+		break;
+
+	case EVENT_WMM_STATUS_CHANGE:
+		dev_dbg(adapter->dev, "event: WMM status changed\n");
+		ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_WMM_GET_STATUS,
+					     0, 0, NULL);
+		break;
+
+	case EVENT_RSSI_LOW:
+		cfg80211_cqm_rssi_notify(priv->netdev,
+					 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
+					 GFP_KERNEL);
+		mwifiex_send_cmd_async(priv, HostCmd_CMD_RSSI_INFO,
+				       HostCmd_ACT_GEN_GET, 0, NULL);
+		priv->subsc_evt_rssi_state = RSSI_LOW_RECVD;
+		dev_dbg(adapter->dev, "event: Beacon RSSI_LOW\n");
+		break;
+	case EVENT_SNR_LOW:
+		dev_dbg(adapter->dev, "event: Beacon SNR_LOW\n");
+		break;
+	case EVENT_MAX_FAIL:
+		dev_dbg(adapter->dev, "event: MAX_FAIL\n");
+		break;
+	case EVENT_RSSI_HIGH:
+		cfg80211_cqm_rssi_notify(priv->netdev,
+					 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
+					 GFP_KERNEL);
+		mwifiex_send_cmd_async(priv, HostCmd_CMD_RSSI_INFO,
+				       HostCmd_ACT_GEN_GET, 0, NULL);
+		priv->subsc_evt_rssi_state = RSSI_HIGH_RECVD;
+		dev_dbg(adapter->dev, "event: Beacon RSSI_HIGH\n");
+		break;
+	case EVENT_SNR_HIGH:
+		dev_dbg(adapter->dev, "event: Beacon SNR_HIGH\n");
+		break;
+	case EVENT_DATA_RSSI_LOW:
+		dev_dbg(adapter->dev, "event: Data RSSI_LOW\n");
+		break;
+	case EVENT_DATA_SNR_LOW:
+		dev_dbg(adapter->dev, "event: Data SNR_LOW\n");
+		break;
+	case EVENT_DATA_RSSI_HIGH:
+		dev_dbg(adapter->dev, "event: Data RSSI_HIGH\n");
+		break;
+	case EVENT_DATA_SNR_HIGH:
+		dev_dbg(adapter->dev, "event: Data SNR_HIGH\n");
+		break;
+	case EVENT_LINK_QUALITY:
+		dev_dbg(adapter->dev, "event: Link Quality\n");
+		break;
+	case EVENT_PRE_BEACON_LOST:
+		dev_dbg(adapter->dev, "event: Pre-Beacon Lost\n");
+		break;
+	case EVENT_IBSS_COALESCED:
+		dev_dbg(adapter->dev, "event: IBSS_COALESCED\n");
+		ret = mwifiex_send_cmd_async(priv,
+				HostCmd_CMD_802_11_IBSS_COALESCING_STATUS,
+				HostCmd_ACT_GEN_GET, 0, NULL);
+		break;
+	case EVENT_ADDBA:
+		dev_dbg(adapter->dev, "event: ADDBA Request\n");
+		mwifiex_send_cmd_async(priv, HostCmd_CMD_11N_ADDBA_RSP,
+				       HostCmd_ACT_GEN_SET, 0,
+				       adapter->event_body);
+		break;
+	case EVENT_DELBA:
+		dev_dbg(adapter->dev, "event: DELBA Request\n");
+		mwifiex_11n_delete_ba_stream(priv, adapter->event_body);
+		break;
+	case EVENT_BA_STREAM_TIEMOUT:
+		dev_dbg(adapter->dev, "event:  BA Stream timeout\n");
+		mwifiex_11n_ba_stream_timeout(priv,
+					      (struct host_cmd_ds_11n_batimeout
+					       *)
+					      adapter->event_body);
+		break;
+	case EVENT_AMSDU_AGGR_CTRL:
+		ctrl = le16_to_cpu(*(__le16 *)adapter->event_body);
+		dev_dbg(adapter->dev, "event: AMSDU_AGGR_CTRL %d\n", ctrl);
+
+		adapter->tx_buf_size =
+				min_t(u16, adapter->curr_tx_buf_size, ctrl);
+		dev_dbg(adapter->dev, "event: tx_buf_size %d\n",
+			adapter->tx_buf_size);
+		break;
+
+	case EVENT_WEP_ICV_ERR:
+		dev_dbg(adapter->dev, "event: WEP ICV error\n");
+		break;
+
+	case EVENT_BW_CHANGE:
+		dev_dbg(adapter->dev, "event: BW Change\n");
+		break;
+
+	case EVENT_HOSTWAKE_STAIE:
+		dev_dbg(adapter->dev, "event: HOSTWAKE_STAIE %d\n", eventcause);
+		break;
+
+	case EVENT_REMAIN_ON_CHAN_EXPIRED:
+		dev_dbg(adapter->dev, "event: Remain on channel expired\n");
+		cfg80211_remain_on_channel_expired(priv->wdev,
+						   priv->roc_cfg.cookie,
+						   &priv->roc_cfg.chan,
+						   GFP_ATOMIC);
+
+		memset(&priv->roc_cfg, 0x00, sizeof(struct mwifiex_roc_cfg));
+
+		break;
+
+	default:
+		dev_dbg(adapter->dev, "event: unknown event id: %#x\n",
+			eventcause);
+		break;
+	}
+
+	return ret;
+}