| /* |
| * 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_prepare_cmd(priv, HostCmd_CMD_802_11_HS_CFG_ENH, |
| 0, 0, NULL, 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_prepare_cmd(priv, |
| HostCmd_CMD_802_11_BG_SCAN_QUERY, |
| HostCmd_ACT_GEN_GET, 0, NULL, 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_prepare_cmd(priv, HostCmd_CMD_WMM_GET_STATUS, |
| 0, 0, NULL, 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_prepare_cmd(priv, |
| HostCmd_CMD_802_11_IBSS_COALESCING_STATUS, |
| HostCmd_ACT_GEN_GET, 0, NULL, NULL); |
| break; |
| case EVENT_ADDBA: |
| dev_dbg(adapter->dev, "event: ADDBA Request\n"); |
| mwifiex_prepare_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP, |
| HostCmd_ACT_GEN_SET, 0, NULL, |
| 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; |
| } |