sta_event.rar_event

/* * Marvell Wireless LAN device driver: station event handling * * Copyright (C) 2011-2014, 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; if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) && ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) { mwifiex_disable_all_tdls_links(priv); if (priv->adapter->auto_tdls) mwifiex_clean_auto_tdls(priv); } /* 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->is_cmd_timedout && 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 || priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) { 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); } static int mwifiex_parse_tdls_event(struct mwifiex_private *priv, struct sk_buff *event_skb) { int ret = 0; struct mwifiex_adapter *adapter = priv->adapter; struct mwifiex_sta_node *sta_ptr; struct mwifiex_tdls_generic_event *tdls_evt = (void *)event_skb->data + sizeof(adapter->event_cause); /* reserved 2 bytes are not mandatory in tdls event */ if (event_skb->len < (sizeof(struct mwifiex_tdls_generic_event) - sizeof(u16) - sizeof(adapter->event_cause))) { dev_err(adapter->dev, "Invalid event length!\n"); return -1; } sta_ptr = mwifiex_get_sta_entry(priv, tdls_evt->peer_mac); if (!sta_ptr) { dev_err(adapter->dev, "cannot get sta entry!\n"); return -1; } switch (le16_to_cpu(tdls_evt->type)) { case TDLS_EVENT_LINK_TEAR_DOWN: cfg80211_tdls_oper_request(priv->netdev, tdls_evt->peer_mac, NL80211_TDLS_TEARDOWN, le16_to_cpu(tdls_evt->u.reason_code), GFP_KERNEL); break; default: break; } return ret; } /* * 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"); if (priv->wps.session_enable) { dev_dbg(adapter->dev, "info: receive deauth event in wps session\n"); break; } 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"); if (priv->wps.session_enable) { dev_dbg(adapter->dev, "info: receive disassoc event in wps session\n"); break; } adapter->dbg.num_event_disas