/*
* 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_IBSS_STA_CONNECT
* - EVENT_IBSS_STA_DISCONNECT
* - 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
* - EVENT_FW_DUMP_INFO
*/
int mwifiex_process_sta_event(struct mwifiex_private *priv)
{
struct mwifiex_adapter *adapter = priv->adapter;
int ret = 0, i;
u32 eventcause = adapter->event_cause;
u16 ctrl, reason_code;
u8 ibss_sta_addr[ETH_ALEN];
struct mwifiex_sta_node *sta_ptr;
switch (eventcause) {
case EVENT_DUMMY_HOST_WAKEUP_SIGNAL:
mwifiex_dbg(adapter, ERROR,
"invalid EVENT: DUMMY_HOST_WAKEUP_SIGNAL, ignore it\n");
break;
case EVENT_LINK_SENSED:
mwifiex_dbg(adapter, EVENT, "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:
mwifiex_dbg(adapter, EVENT, "event: Deauthenticated\n");
if (priv->wps.session_enable) {
mwifiex_dbg(adapter, INFO,
"info: receive deauth event in wps session\n");
break;
}
adapter->dbg.num_event_deauth++;
if (priv->media_connected) {
reason_code =
get_unaligned_le16(adapter->event_body);
mwifiex_reset_connect_state(priv, reason_code, true);
}
break;
case EVENT_DISASSOCIATED:
mwifiex_dbg(adapter, EVENT, "event: Disassociated\n");
if (priv->wps.session_enable) {
mwifiex_dbg(adapter, INFO,
"info: receive disassoc event in wps session\n");
break;
}
adapter->dbg.num_event_disassoc++;
if (priv->media_connected) {
reason_code =
get_unaligned_le16(adapter->event_body);
mwifiex_reset_connect_state(priv, reason_code, true);
}
break;
case EVENT_LINK_LOST:
mwifiex_dbg(adapter, EVENT, "event: Link lost\n");
adapter->dbg.num_event_link_lost++;
if (priv->media_connected) {
reason_code =
get_unaligned_le16(adapter->event_body);
mwifiex_reset_connect_state(priv, reason_code, true);
}
break;
case EVENT_PS_SLEEP:
mwifiex_dbg(adapter, EVENT, "info: EVENT: SLEEP\n");
adapter->ps_state = PS_STATE_PRE_SLEEP;
mwifiex_check_ps_cond(adapter);
break;
case EVENT_PS_AWAKE:
mwifiex_dbg(adapter, EVENT, "info: EVENT: AWAKE\n");
if (!adapter->pps_uapsd_mode &&
(priv->port_open ||
(priv->bss_mode == NL80211_IFTYPE_ADHOC)) &&
priv->media_connected && adapter->sleep_period.period) {
adapter->pps_uapsd_mode = true;
mwifiex_dbg(adapter, EVENT,
"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->if_ops.is_port_ready &&
!adapter->if_ops.is_port_ready(priv))) {
adapter->ps_state = PS_STATE_AWAKE;
adapter->pm_wakeup_card_req = false;
adapter->pm_wakeup_fw_try = false;
del_timer(&adapter->wakeup_timer);
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;
del_timer(&adapter->wakeup_timer);
break;
case EVENT_DEEP_SLEEP_AWAKE:
adapter->if_ops.wakeup_complete(adapter);
mwifiex_dbg(adapter, EVENT, "event: DS_AWAKE\n");
if (adapter->is_deep_sleep)
adapter->is_deep_sleep = false;
break;
case EVENT_HS_ACT_REQ:
mwifiex_dbg(adapter, EVENT, "event: HS_ACT_REQ\n");
ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_HS_CFG_ENH,
0, 0, NULL, false);
break;
case EVENT_MIC_ERR_UNICAST:
mwifiex_dbg(adapter, EVENT, "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:
mwifiex_dbg(adapter, EVENT, "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:
mwifiex_dbg(adapter, EVENT, "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:
mwifiex_dbg(adapter, EVENT, "event: BGS_REPORT\n");
ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_BG_SCAN_QUERY,
HostCmd_ACT_GEN_GET, 0, NULL, false);
break;
case EVENT_BG_SCAN_STOPPED:
dev_dbg(adapter->dev, "event: BGS_STOPPED\n");
cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
if (priv->sched_scanning)
priv->sched_scanning = false;
break;
case EVENT_PORT_RELEASE:
mwifiex_dbg(adapter, EVENT, "event: PORT RELEASE\n");
priv->port_open = true;
break;
case EVENT_EXT_SCAN_REPORT:
mwifiex_dbg(adapter, EVENT, "event: EXT_SCAN Report\n");
/* We intend to skip this event during suspend, but handle
* it in interface disabled case
*/
if (adapter->ext_scan && (!priv->scan_aborting ||
!netif_running(priv->netdev)))
ret = mwifiex_handle_event_ext_scan_report(priv,
adapter->event_skb->data);
break;
case EVENT_WMM_STATUS_CHANGE:
mwifiex_dbg(adapter, EVENT, "event: WMM status changed\n");
ret = mwifiex_send_cmd(priv, HostCmd_CMD_WMM_GET_STATUS,
0, 0, NULL, false);
break;
case EVENT_RSSI_LOW:
cfg80211_cqm_rssi_notify(priv->netdev,
NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
0, GFP_KERNEL);
mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO,
HostCmd_ACT_GEN_GET, 0, NULL, false);
priv->subsc_evt_rssi_state = RSSI_LOW_RECVD;
mwifiex_dbg(adapter, EVENT, "event: Beacon RSSI_LOW\n");
break;
case EVENT_SNR_LOW:
mwifiex_dbg(adapter, EVENT, "event: Beacon SNR_LOW\n");
break;
case EVENT_MAX_FAIL:
mwifiex_dbg(adapter, EVENT, "event: MAX_FAIL\n");
break;
case EVENT_RSSI_HIGH:
cfg80211_cqm_rssi_notify(priv->netdev,
NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
0, GFP_KERNEL);
mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO,
HostCmd_ACT_GEN_GET, 0, NULL, false);
priv->subsc_evt_rssi_state = RSSI_HIGH_RECVD;
mwifiex_dbg(adapter, EVENT, "event: Beacon RSSI_HIGH\n");
break;
case EVENT_SNR_HIGH:
mwifiex_dbg(adapter, EVENT, "event: Beacon SNR_HIGH\n");
break;
case EVENT_DATA_RSSI_LOW:
mwifiex_dbg(adapter, EVENT, "event: Data RSSI_LOW\n");
break;
case EVENT_DATA_SNR_LOW:
mwifiex_dbg(adapter, EVENT, "event: Data SNR_LOW\n");
break;
case EVENT_DATA_RSSI_HIGH:
mwifiex_dbg(adapter, EVENT, "event: Data RSSI_HIGH\n");
break;
case EVENT_DATA_SNR_HIGH:
mwifiex_dbg(adapter, EVENT, "event: Data SNR_HIGH\n");
break;
case EVENT_LINK_QUALITY:
mwifiex_dbg(adapter, EVENT, "event: Link Quality\n");
break;
case EVENT_PRE_BEACON_LOST:
mwifiex_dbg(adapter, EVENT, "event: Pre-Beacon Lost\n");
break;
case EVENT_IBSS_COALESCED:
mwifiex_dbg(adapter, EVENT, "event: IBSS_COALESCED\n");
ret = mwifiex_send_cmd(priv,
HostCmd_CMD_802_11_IBSS_COALESCING_STATUS,
HostCmd_ACT_GEN_GET, 0, NULL, false);
break;
case EVENT_IBSS_STA_CONNECT:
ether_addr_copy(ibss_sta_addr, adapter->event_body + 2);
mwifiex_dbg(adapter, EVENT, "event: IBSS_STA_CONNECT %pM\n",
ibss_sta_addr);
sta_ptr = mwifiex_add_sta_entry(priv, ibss_sta_addr);
if (sta_ptr && adapter->adhoc_11n_enabled) {
mwifiex_check_ibss_peer_capabilties(priv, sta_ptr,
adapter->event_skb);
if (sta_ptr->is_11n_enabled)
for (i = 0; i < MAX_NUM_TID; i++)
sta_ptr->ampdu_sta[i] =
priv->aggr_prio_tbl[i].ampdu_user;
else
for (i = 0; i < MAX_NUM_TID; i++)
sta_ptr->ampdu_sta[i] =
BA_STREAM_NOT_ALLOWED;
memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq));
}
break;
case EVENT_IBSS_STA_DISCONNECT:
ether_addr_copy(ibss_sta_addr, adapter->event_body + 2);
mwifiex_dbg(adapter, EVENT, "event: IBSS_STA_DISCONNECT %pM\n",
ibss_sta_addr);
sta_ptr = mwifiex_get_sta_entry(priv, ibss_sta_addr);
if (sta_ptr && sta_ptr->is_11n_enabled) {
mwifiex_11n_del_rx_reorder_tbl_by_ta(priv,
ibss_sta_addr);
mwifiex_del_tx_ba_stream_tbl_by_ra(priv, ibss_sta_addr);
}
mwifiex_wmm_del_peer_ra_list(priv, ibss_sta_addr);
mwifiex_del_sta_entry(priv, ibss_sta_addr);
break;
case EVENT_ADDBA:
mwifiex_dbg(adapter, EVENT, "event: ADDBA Request\n");
mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP,
HostCmd_ACT_GEN_SET, 0,
adapter->event_body, false);
break;
case EVENT_DELBA:
mwifiex_dbg(adapter, EVENT, "event: DELBA Request\n");
mwifiex_11n_delete_ba_stream(priv, adapter->event_body);
break;
case EVENT_BA_STREAM_TIEMOUT:
mwifiex_dbg(adapter, EVENT, "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 = get_unaligned_le16(adapter->event_body);
mwifiex_dbg(adapter, EVENT,
"event: AMSDU_AGGR_CTRL %d\n", ctrl);
adapter->tx_buf_size =
min_t(u16, adapter->curr_tx_buf_size, ctrl);
mwifiex_dbg(adapter, EVENT, "event: tx_buf_size %d\n",
adapter->tx_buf_size);
break;
case EVENT_WEP_ICV_ERR:
mwifiex_dbg(adapter, EVENT, "event: WEP ICV error\n");
break;
case EVENT_BW_CHANGE:
mwifiex_dbg(adapter, EVENT, "event: BW Change\n");
break;
case EVENT_HOSTWAKE_STAIE:
mwifiex_dbg(adapter, EVENT,
"event: HOSTWAKE_STAIE %d\n", eventcause);
break;
case EVENT_REMAIN_ON_CHAN_EXPIRED:
mwifiex_dbg(adapter, EVENT,
"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;
case EVENT_CHANNEL_SWITCH_ANN:
mwifiex_dbg(adapter, EVENT, "event: Channel Switch Announcement\n");
priv->csa_expire_time =
jiffies + msecs_to_jiffies(DFS_CHAN_MOVE_TIME);
priv->csa_chan = priv->curr_bss_params.bss_descriptor.channel;
ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_DEAUTHENTICATE,
HostCmd_ACT_GEN_SET, 0,
priv->curr_bss_params.bss_descriptor.mac_address,
false);
break;
case EVENT_TDLS_GENERIC_EVENT:
ret = mwifiex_parse_tdls_event(priv, adapter->event_skb);
break;
case EVENT_TX_DATA_PAUSE:
mwifiex_dbg(adapter, EVENT, "event: TX DATA PAUSE\n");
mwifiex_process_tx_pause_event(priv, adapter->event_skb);
break;
case EVENT_MULTI_CHAN_INFO:
mwifiex_dbg(adapter, EVENT, "event: multi-chan info\n");
mwifiex_process_multi_chan_event(priv, adapter->event_skb);
break;
case EVENT_TX_STATUS_REPORT:
mwifiex_dbg(adapter, EVENT, "event: TX_STATUS Report\n");
mwifiex_parse_tx_status_event(priv, adapter->event_body);
break;
case EVENT_CHANNEL_REPORT_RDY:
mwifiex_dbg(adapter, EVENT, "event: Channel Report\n");
ret = mwifiex_11h_handle_chanrpt_ready(priv,
adapter->event_skb);
break;
case EVENT_RADAR_DETECTED:
mwifiex_dbg(adapter, EVENT, "event: Radar detected\n");
ret = mwifiex_11h_handle_radar_detected(priv,
adapter->event_skb);
break;
case EVENT_BT_COEX_WLAN_PARA_CHANGE:
dev_dbg(adapter->dev, "EVENT: BT coex wlan param update\n");
mwifiex_bt_coex_wlan_param_update_event(priv,
adapter->event_skb);
break;
case EVENT_RXBA_SYNC:
dev_dbg(adapter->dev, "EVENT: RXBA_SYNC\n");
mwifiex_11n_rxba_sync_event(priv, adapter->event_body,
adapter->event_skb->len -
sizeof(eventcause));
break;
case EVENT_FW_DUMP_INFO:
mwifiex_dbg(adapter, EVENT, "event: firmware debug info\n");
mwifiex_fw_dump_info_event(priv, adapter->event_skb);
break;
/* Debugging event; not used, but let's not print an ERROR for it. */
case EVENT_UNKNOWN_DEBUG:
mwifiex_dbg(adapter, EVENT, "event: debug\n");
break;
default:
mwifiex_dbg(adapter, ERROR, "event: unknown event id: %#x\n",
eventcause);
break;
}
return ret;
}
/*
* This function removes the card.
*
* This function follows the following major steps to remove the device -
* - Stop data traffic
* - Shutdown firmware
* - Remove the logical interfaces
* - Terminate the work queue
* - Unregister the device
* - Free the adapter structure
*/
int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem)
{
struct mwifiex_private *priv = NULL;
int i;
if (down_interruptible(sem))
goto exit_sem_err;
if (!adapter)
goto exit_remove;
adapter->surprise_removed = true;
/* Stop data */
for (i = 0; i < adapter->priv_num; i++) {
priv = adapter->priv[i];
if (priv && priv->netdev) {
mwifiex_stop_net_dev_queue(priv->netdev, adapter);
if (netif_carrier_ok(priv->netdev))
netif_carrier_off(priv->netdev);
}
}
dev_dbg(adapter->dev, "cmd: calling mwifiex_shutdown_drv...\n");
adapter->init_wait_q_woken = false;
if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS)
wait_event_interruptible(adapter->init_wait_q,
adapter->init_wait_q_woken);
dev_dbg(adapter->dev, "cmd: mwifiex_shutdown_drv done\n");
if (atomic_read(&adapter->rx_pending) ||
atomic_read(&adapter->tx_pending) ||
atomic_read(&adapter->cmd_pending)) {
dev_err(adapter->dev, "rx_pending=%d, tx_pending=%d, "
"cmd_pending=%d\n",
atomic_read(&adapter->rx_pending),
atomic_read(&adapter->tx_pending),
atomic_read(&adapter->cmd_pending));
}
for (i = 0; i < adapter->priv_num; i++) {
priv = adapter->priv[i];
if (!priv)
continue;
rtnl_lock();
if (priv->wdev && priv->netdev)
mwifiex_del_virtual_intf(adapter->wiphy, priv->wdev);
rtnl_unlock();
}
priv = adapter->priv[0];
if (!priv || !priv->wdev)
goto exit_remove;
wiphy_unregister(priv->wdev->wiphy);
wiphy_free(priv->wdev->wiphy);
for (i = 0; i < adapter->priv_num; i++) {
priv = adapter->priv[i];
if (priv)
kfree(priv->wdev);
}
mwifiex_terminate_workqueue(adapter);
/* Unregister device */
dev_dbg(adapter->dev, "info: unregister device\n");
if (adapter->if_ops.unregister_dev)
adapter->if_ops.unregister_dev(adapter);
/* Free adapter structure */
dev_dbg(adapter->dev, "info: free adapter\n");
mwifiex_free_adapter(adapter);
exit_remove:
up(sem);
exit_sem_err:
return 0;
}
/*
* 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);
/* 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);
}
/*
* 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,
bool from_ap)
{
struct mwifiex_adapter *adapter = priv->adapter;
if (!priv->media_connected)
return;
mwifiex_dbg(adapter, INFO,
"info: handles disconnect event\n");
priv->media_connected = false;
priv->scan_block = false;
priv->port_open = 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;
priv->assoc_resp_ht_param = 0;
priv->ht_param_present = false;
if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) && priv->hist_data)
mwifiex_hist_data_reset(priv);
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
*/
mwifiex_dbg(adapter, INFO,
"info: previous SSID=%s, SSID len=%u\n",
priv->prev_ssid.ssid, priv->prev_ssid.ssid_len);
mwifiex_dbg(adapter, INFO,
"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 (test_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags) &&
adapter->curr_cmd)
return;
priv->media_connected = false;
mwifiex_dbg(adapter, MSG,
"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,
!from_ap, GFP_KERNEL);
}
eth_zero_addr(priv->cfg_bssid);
mwifiex_stop_net_dev_queue(priv->netdev, adapter);
if (netif_carrier_ok(priv->netdev))
netif_carrier_off(priv->netdev);
if (!ISSUPP_FIRMWARE_SUPPLICANT(priv->adapter->fw_cap_info))
return;
mwifiex_send_cmd(priv, HostCmd_CMD_GTK_REKEY_OFFLOAD_CFG,
HostCmd_ACT_GEN_REMOVE, 0, NULL, false);
}
/*
* In Ad-Hoc mode, the IBSS is created if not found in scan list.
* In both Ad-Hoc and infra mode, an deauthentication is performed
* first.
*/
int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
struct cfg80211_ssid *req_ssid)
{
int ret;
struct mwifiex_adapter *adapter = priv->adapter;
struct mwifiex_bssdescriptor *bss_desc = NULL;
priv->scan_block = false;
if (bss) {
mwifiex_process_country_ie(priv, bss);
/* Allocate and fill new bss descriptor */
bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor),
GFP_KERNEL);
if (!bss_desc)
return -ENOMEM;
ret = mwifiex_fill_new_bss_desc(priv, bss, bss_desc);
if (ret)
goto done;
}
if (priv->bss_mode == NL80211_IFTYPE_STATION ||
priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) {
u8 config_bands;
ret = mwifiex_deauthenticate(priv, NULL);
if (ret)
goto done;
if (!bss_desc)
return -1;
if (mwifiex_band_to_radio_type(bss_desc->bss_band) ==
HostCmd_SCAN_RADIO_TYPE_BG)
config_bands = BAND_B | BAND_G | BAND_GN;
else
config_bands = BAND_A | BAND_AN | BAND_AAC;
if (!((config_bands | adapter->fw_bands) & ~adapter->fw_bands))
adapter->config_bands = config_bands;
ret = mwifiex_check_network_compatibility(priv, bss_desc);
if (ret)
goto done;
if (mwifiex_11h_get_csa_closed_channel(priv) ==
(u8)bss_desc->channel) {
dev_err(adapter->dev,
"Attempt to reconnect on csa closed chan(%d)\n",
bss_desc->channel);
goto done;
}
dev_dbg(adapter->dev, "info: SSID found in scan list ... "
"associating...\n");
mwifiex_stop_net_dev_queue(priv->netdev, adapter);
if (netif_carrier_ok(priv->netdev))
netif_carrier_off(priv->netdev);
/* Clear any past association response stored for
* application retrieval */
priv->assoc_rsp_size = 0;
ret = mwifiex_associate(priv, bss_desc);
/* If auth type is auto and association fails using open mode,
* try to connect using shared mode */
if (ret == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
priv->sec_info.is_authtype_auto &&
priv->sec_info.wep_enabled) {
priv->sec_info.authentication_mode =
NL80211_AUTHTYPE_SHARED_KEY;
ret = mwifiex_associate(priv, bss_desc);
}
if (bss)
cfg80211_put_bss(priv->adapter->wiphy, bss);
} else {
/* Adhoc mode */
/* If the requested SSID matches current SSID, return */
if (bss_desc && bss_desc->ssid.ssid_len &&
(!mwifiex_ssid_cmp(&priv->curr_bss_params.bss_descriptor.
ssid, &bss_desc->ssid))) {
ret = 0;
goto done;
}
/* Exit Adhoc mode first */
dev_dbg(adapter->dev, "info: Sending Adhoc Stop\n");
ret = mwifiex_deauthenticate(priv, NULL);
if (ret)
goto done;
priv->adhoc_is_link_sensed = false;
ret = mwifiex_check_network_compatibility(priv, bss_desc);
mwifiex_stop_net_dev_queue(priv->netdev, adapter);
if (netif_carrier_ok(priv->netdev))
netif_carrier_off(priv->netdev);
if (!ret) {
dev_dbg(adapter->dev, "info: network found in scan"
" list. Joining...\n");
ret = mwifiex_adhoc_join(priv, bss_desc);
if (bss)
cfg80211_put_bss(priv->adapter->wiphy, bss);
} else {
dev_dbg(adapter->dev, "info: Network not found in "
"the list, creating adhoc with ssid = %s\n",
req_ssid->ssid);
ret = mwifiex_adhoc_start(priv, req_ssid);
}
}
done:
/* beacon_ie buffer was allocated in function
* mwifiex_fill_new_bss_desc(). Free it now.
*/
if (bss_desc)
kfree(bss_desc->beacon_buf);
kfree(bss_desc);
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_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(priv, HostCmd_CMD_802_11_HS_CFG_ENH,
0, 0, NULL, false);
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(priv, HostCmd_CMD_802_11_BG_SCAN_QUERY,
HostCmd_ACT_GEN_GET, 0, NULL, false);
break;
case EVENT_PORT_RELEASE:
dev_dbg(adapter->dev, "event: PORT RELEASE\n");
break;
case EVENT_EXT_SCAN_REPORT:
dev_dbg(adapter->dev, "event: EXT_SCAN Report\n");
if (adapter->ext_scan)
ret = mwifiex_handle_event_ext_scan_report(priv,
adapter->event_skb->data);
break;
case EVENT_WMM_STATUS_CHANGE:
dev_dbg(adapter->dev, "event: WMM status changed\n");
ret = mwifiex_send_cmd(priv, HostCmd_CMD_WMM_GET_STATUS,
0, 0, NULL, false);
break;
case EVENT_RSSI_LOW:
cfg80211_cqm_rssi_notify(priv->netdev,
NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
GFP_KERNEL);
mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO,
HostCmd_ACT_GEN_GET, 0, NULL, false);
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(priv, HostCmd_CMD_RSSI_INFO,
HostCmd_ACT_GEN_GET, 0, NULL, false);
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(priv,
HostCmd_CMD_802_11_IBSS_COALESCING_STATUS,
HostCmd_ACT_GEN_GET, 0, NULL, false);
break;
case EVENT_ADDBA:
dev_dbg(adapter->dev, "event: ADDBA Request\n");
mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP,
HostCmd_ACT_GEN_SET, 0,
adapter->event_body, false);
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;
case EVENT_CHANNEL_SWITCH_ANN:
dev_dbg(adapter->dev, "event: Channel Switch Announcement\n");
priv->csa_expire_time =
jiffies + msecs_to_jiffies(DFS_CHAN_MOVE_TIME);
priv->csa_chan = priv->curr_bss_params.bss_descriptor.channel;
ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_DEAUTHENTICATE,
HostCmd_ACT_GEN_SET, 0,
priv->curr_bss_params.bss_descriptor.mac_address,
false);
break;
case EVENT_TDLS_GENERIC_EVENT:
ret = mwifiex_parse_tdls_event(priv, adapter->event_skb);
break;
default:
dev_dbg(adapter->dev, "event: unknown event id: %#x\n",
eventcause);
break;
}
return ret;
}
/*
* In Ad-Hoc mode, the IBSS is created if not found in scan list.
* In both Ad-Hoc and infra mode, an deauthentication is performed
* first.
*/
int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
struct cfg80211_ssid *req_ssid)
{
int ret;
struct mwifiex_adapter *adapter = priv->adapter;
struct mwifiex_bssdescriptor *bss_desc = NULL;
priv->scan_block = false;
if (bss) {
/* Allocate and fill new bss descriptor */
bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor),
GFP_KERNEL);
if (!bss_desc) {
dev_err(priv->adapter->dev, " failed to alloc bss_desc\n");
return -ENOMEM;
}
ret = mwifiex_fill_new_bss_desc(priv, bss, bss_desc);
if (ret)
goto done;
}
if (priv->bss_mode == NL80211_IFTYPE_STATION) {
/* Infra mode */
ret = mwifiex_deauthenticate(priv, NULL);
if (ret)
goto done;
ret = mwifiex_check_network_compatibility(priv, bss_desc);
if (ret)
goto done;
dev_dbg(adapter->dev, "info: SSID found in scan list ... "
"associating...\n");
if (!netif_queue_stopped(priv->netdev))
mwifiex_stop_net_dev_queue(priv->netdev, adapter);
if (netif_carrier_ok(priv->netdev))
netif_carrier_off(priv->netdev);
/* Clear any past association response stored for
* application retrieval */
priv->assoc_rsp_size = 0;
ret = mwifiex_associate(priv, bss_desc);
/* If auth type is auto and association fails using open mode,
* try to connect using shared mode */
if (ret == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
priv->sec_info.is_authtype_auto &&
priv->sec_info.wep_enabled) {
priv->sec_info.authentication_mode =
NL80211_AUTHTYPE_SHARED_KEY;
ret = mwifiex_associate(priv, bss_desc);
}
if (bss)
cfg80211_put_bss(bss);
} else {
/* Adhoc mode */
/* If the requested SSID matches current SSID, return */
if (bss_desc && bss_desc->ssid.ssid_len &&
(!mwifiex_ssid_cmp(&priv->curr_bss_params.bss_descriptor.
ssid, &bss_desc->ssid))) {
kfree(bss_desc);
return 0;
}
/* Exit Adhoc mode first */
dev_dbg(adapter->dev, "info: Sending Adhoc Stop\n");
ret = mwifiex_deauthenticate(priv, NULL);
if (ret)
goto done;
priv->adhoc_is_link_sensed = false;
ret = mwifiex_check_network_compatibility(priv, bss_desc);
if (!netif_queue_stopped(priv->netdev))
mwifiex_stop_net_dev_queue(priv->netdev, adapter);
if (netif_carrier_ok(priv->netdev))
netif_carrier_off(priv->netdev);
if (!ret) {
dev_dbg(adapter->dev, "info: network found in scan"
" list. Joining...\n");
ret = mwifiex_adhoc_join(priv, bss_desc);
if (bss)
cfg80211_put_bss(bss);
} else {
dev_dbg(adapter->dev, "info: Network not found in "
"the list, creating adhoc with ssid = %s\n",
req_ssid->ssid);
ret = mwifiex_adhoc_start(priv, req_ssid);
}
}
done:
kfree(bss_desc);
return ret;
}
/*
* This function handles AP interface specific events generated by firmware.
*
* Event specific routines are called by this function based
* upon the generated event cause.
*
*
* Events supported for AP -
* - EVENT_UAP_STA_ASSOC
* - EVENT_UAP_STA_DEAUTH
* - EVENT_UAP_BSS_ACTIVE
* - EVENT_UAP_BSS_START
* - EVENT_UAP_BSS_IDLE
* - EVENT_UAP_MIC_COUNTERMEASURES:
*/
int mwifiex_process_uap_event(struct mwifiex_private *priv)
{
struct mwifiex_adapter *adapter = priv->adapter;
int len, i;
u32 eventcause = adapter->event_cause;
struct station_info sinfo;
struct mwifiex_assoc_event *event;
struct mwifiex_sta_node *node;
u8 *deauth_mac;
struct host_cmd_ds_11n_batimeout *ba_timeout;
u16 ctrl;
switch (eventcause) {
case EVENT_UAP_STA_ASSOC:
memset(&sinfo, 0, sizeof(sinfo));
event = (struct mwifiex_assoc_event *)
(adapter->event_body + MWIFIEX_UAP_EVENT_EXTRA_HEADER);
if (le16_to_cpu(event->type) == TLV_TYPE_UAP_MGMT_FRAME) {
len = -1;
if (ieee80211_is_assoc_req(event->frame_control))
len = 0;
else if (ieee80211_is_reassoc_req(event->frame_control))
/* There will be ETH_ALEN bytes of
* current_ap_addr before the re-assoc ies.
*/
len = ETH_ALEN;
if (len != -1) {
sinfo.assoc_req_ies = &event->data[len];
len = (u8 *)sinfo.assoc_req_ies -
(u8 *)&event->frame_control;
sinfo.assoc_req_ies_len =
le16_to_cpu(event->len) - (u16)len;
}
}
cfg80211_new_sta(priv->netdev, event->sta_addr, &sinfo,
GFP_KERNEL);
node = mwifiex_add_sta_entry(priv, event->sta_addr);
if (!node) {
mwifiex_dbg(adapter, ERROR,
"could not create station entry!\n");
return -1;
}
if (!priv->ap_11n_enabled)
break;
mwifiex_set_sta_ht_cap(priv, sinfo.assoc_req_ies,
sinfo.assoc_req_ies_len, node);
for (i = 0; i < MAX_NUM_TID; i++) {
if (node->is_11n_enabled)
node->ampdu_sta[i] =
priv->aggr_prio_tbl[i].ampdu_user;
else
node->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED;
}
memset(node->rx_seq, 0xff, sizeof(node->rx_seq));
break;
case EVENT_UAP_STA_DEAUTH:
deauth_mac = adapter->event_body +
MWIFIEX_UAP_EVENT_EXTRA_HEADER;
cfg80211_del_sta(priv->netdev, deauth_mac, GFP_KERNEL);
if (priv->ap_11n_enabled) {
mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, deauth_mac);
mwifiex_del_tx_ba_stream_tbl_by_ra(priv, deauth_mac);
}
mwifiex_wmm_del_peer_ra_list(priv, deauth_mac);
mwifiex_del_sta_entry(priv, deauth_mac);
break;
case EVENT_UAP_BSS_IDLE:
priv->media_connected = false;
priv->port_open = false;
if (netif_carrier_ok(priv->netdev))
netif_carrier_off(priv->netdev);
mwifiex_stop_net_dev_queue(priv->netdev, adapter);
mwifiex_clean_txrx(priv);
mwifiex_del_all_sta_list(priv);
break;
case EVENT_UAP_BSS_ACTIVE:
priv->media_connected = true;
priv->port_open = true;
if (!netif_carrier_ok(priv->netdev))
netif_carrier_on(priv->netdev);
mwifiex_wake_up_net_dev_queue(priv->netdev, adapter);
break;
case EVENT_UAP_BSS_START:
mwifiex_dbg(adapter, EVENT,
"AP EVENT: event id: %#x\n", eventcause);
priv->port_open = false;
memcpy(priv->netdev->dev_addr, adapter->event_body + 2,
ETH_ALEN);
if (priv->hist_data)
mwifiex_hist_data_reset(priv);
mwifiex_check_uap_capabilties(priv, adapter->event_skb);
break;
case EVENT_UAP_MIC_COUNTERMEASURES:
/* For future development */
mwifiex_dbg(adapter, EVENT,
"AP EVENT: event id: %#x\n", eventcause);
break;
case EVENT_AMSDU_AGGR_CTRL:
ctrl = le16_to_cpu(*(__le16 *)adapter->event_body);
mwifiex_dbg(adapter, EVENT,
"event: AMSDU_AGGR_CTRL %d\n", ctrl);
if (priv->media_connected) {
adapter->tx_buf_size =
min_t(u16, adapter->curr_tx_buf_size, ctrl);
mwifiex_dbg(adapter, EVENT,
"event: tx_buf_size %d\n",
adapter->tx_buf_size);
}
break;
case EVENT_ADDBA:
mwifiex_dbg(adapter, EVENT, "event: ADDBA Request\n");
if (priv->media_connected)
mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP,
HostCmd_ACT_GEN_SET, 0,
adapter->event_body, false);
break;
case EVENT_DELBA:
mwifiex_dbg(adapter, EVENT, "event: DELBA Request\n");
if (priv->media_connected)
mwifiex_11n_delete_ba_stream(priv, adapter->event_body);
break;
case EVENT_BA_STREAM_TIEMOUT:
mwifiex_dbg(adapter, EVENT, "event: BA Stream timeout\n");
if (priv->media_connected) {
ba_timeout = (void *)adapter->event_body;
mwifiex_11n_ba_stream_timeout(priv, ba_timeout);
}
break;
case EVENT_EXT_SCAN_REPORT:
mwifiex_dbg(adapter, EVENT, "event: EXT_SCAN Report\n");
if (adapter->ext_scan)
return mwifiex_handle_event_ext_scan_report(priv,
adapter->event_skb->data);
break;
case EVENT_TX_STATUS_REPORT:
mwifiex_dbg(adapter, EVENT, "event: TX_STATUS Report\n");
mwifiex_parse_tx_status_event(priv, adapter->event_body);
break;
case EVENT_PS_SLEEP:
mwifiex_dbg(adapter, EVENT, "info: EVENT: SLEEP\n");
adapter->ps_state = PS_STATE_PRE_SLEEP;
mwifiex_check_ps_cond(adapter);
break;
case EVENT_PS_AWAKE:
mwifiex_dbg(adapter, EVENT, "info: EVENT: AWAKE\n");
if (!adapter->pps_uapsd_mode &&
priv->media_connected && adapter->sleep_period.period) {
adapter->pps_uapsd_mode = true;
mwifiex_dbg(adapter, EVENT,
"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_CHANNEL_REPORT_RDY:
mwifiex_dbg(adapter, EVENT, "event: Channel Report\n");
mwifiex_11h_handle_chanrpt_ready(priv, adapter->event_skb);
break;
case EVENT_RADAR_DETECTED:
mwifiex_dbg(adapter, EVENT, "event: Radar detected\n");
mwifiex_11h_handle_radar_detected(priv, adapter->event_skb);
break;
case EVENT_BT_COEX_WLAN_PARA_CHANGE:
dev_err(adapter->dev, "EVENT: BT coex wlan param update\n");
mwifiex_bt_coex_wlan_param_update_event(priv,
adapter->event_skb);
break;
case EVENT_TX_DATA_PAUSE:
mwifiex_dbg(adapter, EVENT, "event: TX DATA PAUSE\n");
mwifiex_process_tx_pause_event(priv, adapter->event_skb);
break;
case EVENT_MULTI_CHAN_INFO:
mwifiex_dbg(adapter, EVENT, "event: multi-chan info\n");
mwifiex_process_multi_chan_event(priv, adapter->event_skb);
break;
default:
mwifiex_dbg(adapter, EVENT,
"event: unknown event id: %#x\n", eventcause);
break;
}
return 0;
}
int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
struct cfg80211_ssid *req_ssid)
{
int ret;
struct mwifiex_adapter *adapter = priv->adapter;
struct mwifiex_bssdescriptor *bss_desc = NULL;
u8 *beacon_ie = NULL;
priv->scan_block = false;
if (bss) {
bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor),
GFP_KERNEL);
if (!bss_desc) {
dev_err(priv->adapter->dev, " failed to alloc bss_desc\n");
return -ENOMEM;
}
beacon_ie = kmemdup(bss->information_elements,
bss->len_beacon_ies, GFP_KERNEL);
if (!beacon_ie) {
kfree(bss_desc);
dev_err(priv->adapter->dev, " failed to alloc beacon_ie\n");
return -ENOMEM;
}
ret = mwifiex_fill_new_bss_desc(priv, bss->bssid, bss->signal,
beacon_ie, bss->len_beacon_ies,
bss->beacon_interval,
bss->capability,
*(u8 *)bss->priv, bss_desc);
if (ret)
goto done;
}
if (priv->bss_mode == NL80211_IFTYPE_STATION) {
ret = mwifiex_deauthenticate(priv, NULL);
if (ret)
goto done;
ret = mwifiex_check_network_compatibility(priv, bss_desc);
if (ret)
goto done;
dev_dbg(adapter->dev, "info: SSID found in scan list ... "
"associating...\n");
if (!netif_queue_stopped(priv->netdev))
mwifiex_stop_net_dev_queue(priv->netdev, adapter);
if (netif_carrier_ok(priv->netdev))
netif_carrier_off(priv->netdev);
priv->assoc_rsp_size = 0;
ret = mwifiex_associate(priv, bss_desc);
if (ret == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
priv->sec_info.is_authtype_auto &&
priv->sec_info.wep_enabled) {
priv->sec_info.authentication_mode =
NL80211_AUTHTYPE_SHARED_KEY;
ret = mwifiex_associate(priv, bss_desc);
}
if (bss)
cfg80211_put_bss(bss);
} else {
if (bss_desc && bss_desc->ssid.ssid_len &&
(!mwifiex_ssid_cmp(&priv->curr_bss_params.bss_descriptor.
ssid, &bss_desc->ssid))) {
kfree(bss_desc);
kfree(beacon_ie);
return 0;
}
dev_dbg(adapter->dev, "info: Sending Adhoc Stop\n");
ret = mwifiex_deauthenticate(priv, NULL);
if (ret)
goto done;
priv->adhoc_is_link_sensed = false;
ret = mwifiex_check_network_compatibility(priv, bss_desc);
if (!netif_queue_stopped(priv->netdev))
mwifiex_stop_net_dev_queue(priv->netdev, adapter);
if (netif_carrier_ok(priv->netdev))
netif_carrier_off(priv->netdev);
if (!ret) {
dev_dbg(adapter->dev, "info: network found in scan"
" list. Joining...\n");
ret = mwifiex_adhoc_join(priv, bss_desc);
if (bss)
cfg80211_put_bss(bss);
} else {
dev_dbg(adapter->dev, "info: Network not found in "
"the list, creating adhoc with ssid = %s\n",
req_ssid->ssid);
ret = mwifiex_adhoc_start(priv, req_ssid);
}
}
done:
kfree(bss_desc);
kfree(beacon_ie);
return ret;
}
/*
* This function removes the card.
*
* This function follows the following major steps to remove the device -
* - Stop data traffic
* - Shutdown firmware
* - Remove the logical interfaces
* - Terminate the work queue
* - Unregister the device
* - Free the adapter structure
*/
int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem)
{
struct mwifiex_private *priv = NULL;
int i;
if (down_trylock(sem))
goto exit_sem_err;
if (!adapter)
goto exit_remove;
/* We can no longer handle interrupts once we start doing the teardown
* below. */
if (adapter->if_ops.disable_int)
adapter->if_ops.disable_int(adapter);
adapter->surprise_removed = true;
mwifiex_terminate_workqueue(adapter);
/* Stop data */
for (i = 0; i < adapter->priv_num; i++) {
priv = adapter->priv[i];
if (priv && priv->netdev) {
mwifiex_stop_net_dev_queue(priv->netdev, adapter);
if (netif_carrier_ok(priv->netdev))
netif_carrier_off(priv->netdev);
}
}
mwifiex_dbg(adapter, CMD,
"cmd: calling mwifiex_shutdown_drv...\n");
adapter->init_wait_q_woken = false;
if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS)
wait_event_interruptible(adapter->init_wait_q,
adapter->init_wait_q_woken);
mwifiex_dbg(adapter, CMD,
"cmd: mwifiex_shutdown_drv done\n");
if (atomic_read(&adapter->rx_pending) ||
atomic_read(&adapter->tx_pending) ||
atomic_read(&adapter->cmd_pending)) {
mwifiex_dbg(adapter, ERROR,
"rx_pending=%d, tx_pending=%d,\t"
"cmd_pending=%d\n",
atomic_read(&adapter->rx_pending),
atomic_read(&adapter->tx_pending),
atomic_read(&adapter->cmd_pending));
}
for (i = 0; i < adapter->priv_num; i++) {
priv = adapter->priv[i];
if (!priv)
continue;
rtnl_lock();
if (priv->netdev &&
priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
rtnl_unlock();
}
wiphy_unregister(adapter->wiphy);
wiphy_free(adapter->wiphy);
/* Unregister device */
mwifiex_dbg(adapter, INFO,
"info: unregister device\n");
if (adapter->if_ops.unregister_dev)
adapter->if_ops.unregister_dev(adapter);
/* Free adapter structure */
mwifiex_dbg(adapter, INFO,
"info: free adapter\n");
mwifiex_free_adapter(adapter);
exit_remove:
up(sem);
exit_sem_err:
return 0;
}
static void mwifiex_uap_queue_bridged_pkt(struct mwifiex_private *priv,
struct sk_buff *skb)
{
struct mwifiex_adapter *adapter = priv->adapter;
struct uap_rxpd *uap_rx_pd;
struct rx_packet_hdr *rx_pkt_hdr;
struct sk_buff *new_skb;
struct mwifiex_txinfo *tx_info;
int hdr_chop;
struct timeval tv;
u8 rfc1042_eth_hdr[ETH_ALEN] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
uap_rx_pd = (struct uap_rxpd *)(skb->data);
rx_pkt_hdr = (void *)uap_rx_pd + le16_to_cpu(uap_rx_pd->rx_pkt_offset);
if ((atomic_read(&adapter->pending_bridged_pkts) >=
MWIFIEX_BRIDGED_PKTS_THRESHOLD)) {
dev_err(priv->adapter->dev,
"Tx: Bridge packet limit reached. Drop packet!\n");
kfree_skb(skb);
return;
}
if (!memcmp(&rx_pkt_hdr->rfc1042_hdr,
rfc1042_eth_hdr, sizeof(rfc1042_eth_hdr)))
/* Chop off the rxpd + the excess memory from
* 802.2/llc/snap header that was removed.
*/
hdr_chop = (u8 *)eth_hdr - (u8 *)uap_rx_pd;
else
/* Chop off the rxpd */
hdr_chop = (u8 *)&rx_pkt_hdr->eth803_hdr - (u8 *)uap_rx_pd;
/* Chop off the leading header bytes so the it points
* to the start of either the reconstructed EthII frame
* or the 802.2/llc/snap frame.
*/
skb_pull(skb, hdr_chop);
if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
dev_dbg(priv->adapter->dev,
"data: Tx: insufficient skb headroom %d\n",
skb_headroom(skb));
/* Insufficient skb headroom - allocate a new skb */
new_skb =
skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
if (unlikely(!new_skb)) {
dev_err(priv->adapter->dev,
"Tx: cannot allocate new_skb\n");
kfree_skb(skb);
priv->stats.tx_dropped++;
return;
}
kfree_skb(skb);
skb = new_skb;
dev_dbg(priv->adapter->dev, "info: new skb headroom %d\n",
skb_headroom(skb));
}
tx_info = MWIFIEX_SKB_TXCB(skb);
tx_info->bss_num = priv->bss_num;
tx_info->bss_type = priv->bss_type;
tx_info->flags |= MWIFIEX_BUF_FLAG_BRIDGED_PKT;
do_gettimeofday(&tv);
skb->tstamp = timeval_to_ktime(tv);
mwifiex_wmm_add_buf_txqueue(priv, skb);
atomic_inc(&adapter->tx_pending);
atomic_inc(&adapter->pending_bridged_pkts);
if ((atomic_read(&adapter->tx_pending) >= MAX_TX_PENDING)) {
mwifiex_set_trans_start(priv->netdev);
mwifiex_stop_net_dev_queue(priv->netdev, priv->adapter);
}
return;
}
/*
* 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;
dev_dbg(adapter->dev, "info: successfully disconnected from"
" %pM: reason code %d\n", priv->cfg_bssid,
WLAN_REASON_DEAUTH_LEAVING);
if (priv->bss_mode == NL80211_IFTYPE_STATION) {
cfg80211_disconnected(priv->netdev, WLAN_REASON_DEAUTH_LEAVING,
NULL, 0, GFP_KERNEL);
}
memset(priv->cfg_bssid, 0, ETH_ALEN);
if (!netif_queue_stopped(priv->netdev))
mwifiex_stop_net_dev_queue(priv->netdev, adapter);
if (netif_carrier_ok(priv->netdev))
netif_carrier_off(priv->netdev);
/* Reset wireless stats signal info */
priv->qual_level = 0;
priv->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))
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)
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))
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:
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;
}