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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 000000000000..fc265cab0907
--- /dev/null
+++ b/drivers/net/wireless/mwifiex/sta_event.c
@@ -0,0 +1,406 @@
+/*
+ * 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)
+{
+ 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 mwifiex_802_11_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;
+ if (!priv->disconnect) {
+ priv->disconnect = 1;
+ dev_dbg(adapter->dev, "info: successfully disconnected from"
+ " %pM: reason code %d\n", priv->cfg_bssid,
+ WLAN_REASON_DEAUTH_LEAVING);
+ cfg80211_disconnected(priv->netdev,
+ WLAN_REASON_DEAUTH_LEAVING, NULL, 0,
+ GFP_KERNEL);
+ queue_work(priv->workqueue, &priv->cfg_workqueue);
+ }
+ if (!netif_queue_stopped(priv->netdev))
+ netif_stop_queue(priv->netdev);
+ if (netif_carrier_ok(priv->netdev))
+ netif_carrier_off(priv->netdev);
+ /* Reset wireless stats signal info */
+ priv->w_stats.qual.level = 0;
+ priv->w_stats.qual.noise = 0;
+}
+
+/*
+ * 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;
+
+ switch (eventcause) {
+ case EVENT_DUMMY_HOST_WAKEUP_SIGNAL:
+ dev_err(adapter->dev, "invalid EVENT: DUMMY_HOST_WAKEUP_SIGNAL,"
+ " ignoring 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);
+ if (netif_queue_stopped(priv->netdev))
+ netif_wake_queue(priv->netdev);
+ break;
+
+ case EVENT_DEAUTHENTICATED:
+ dev_dbg(adapter->dev, "event: Deauthenticated\n");
+ adapter->dbg.num_event_deauth++;
+ if (priv->media_connected)
+ mwifiex_reset_connect_state(priv);
+ break;
+
+ case EVENT_DISASSOCIATED:
+ dev_dbg(adapter->dev, "event: Disassociated\n");
+ adapter->dbg.num_event_disassoc++;
+ if (priv->media_connected)
+ mwifiex_reset_connect_state(priv);
+ break;
+
+ case EVENT_LINK_LOST:
+ dev_dbg(adapter->dev, "event: Link lost\n");
+ adapter->dbg.num_event_link_lost++;
+ if (priv->media_connected)
+ mwifiex_reset_connect_state(priv);
+ 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) {
+ 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");
+ break;
+
+ case EVENT_MIC_ERR_MULTICAST:
+ dev_dbg(adapter->dev, "event: MULTICAST MIC ERROR\n");
+ 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);
+ if (!netif_queue_stopped(priv->netdev))
+ netif_stop_queue(priv->netdev);
+ 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");
+ /* Clear the previous scan result */
+ memset(adapter->scan_table, 0x00,
+ sizeof(struct mwifiex_bssdescriptor) * IW_MAX_AP);
+ adapter->num_in_scan_table = 0;
+ adapter->bcn_buf_end = adapter->bcn_buf;
+ 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:
+ 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:
+ 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:
+ dev_dbg(adapter->dev, "event: AMSDU_AGGR_CTRL %d\n",
+ *(u16 *) adapter->event_body);
+ adapter->tx_buf_size =
+ min(adapter->curr_tx_buf_size,
+ le16_to_cpu(*(__le16 *) adapter->event_body));
+ 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;
+ default:
+ dev_dbg(adapter->dev, "event: unknown event id: %#x\n",
+ eventcause);
+ break;
+ }
+
+ return ret;
+}