From: Emmanuel Grumbach Date: Mon, 30 Mar 2015 07:55:57 +0000 (+0300) Subject: iwlwifi: mvm: capture connection loss as part of MLME trigger X-Git-Tag: firefly_0821_release~176^2~1974^2~39^2~6^2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=31755207afc5d5a30e3eea9e4f2a518fc5b680c1;p=firefly-linux-kernel-4.4.55.git iwlwifi: mvm: capture connection loss as part of MLME trigger The only other way to catch these would have been to monitor the Tx deauth event, but we can send a deauth when we roam. So it would have been tricky to make sure we capture the connection losses only. Define a separate trigger for the connection losses to make it easier to catch them. Reviewed-by: Johannes Berg Signed-off-by: Emmanuel Grumbach --- diff --git a/drivers/net/wireless/iwlwifi/iwl-fw-file.h b/drivers/net/wireless/iwlwifi/iwl-fw-file.h index ee149482061f..bfdf3faa6c47 100644 --- a/drivers/net/wireless/iwlwifi/iwl-fw-file.h +++ b/drivers/net/wireless/iwlwifi/iwl-fw-file.h @@ -586,12 +586,14 @@ struct iwl_fw_dbg_trigger_low_rssi { * @stop_tx_deauth: number of Tx deauth before to collect * @stop_assoc_denied: number of denied association to collect * @stop_assoc_timeout: number of association timeout to collect + * @stop_connection_loss: number of connection loss to collect * @start_auth_denied: number of denied authentication to start recording * @start_auth_timeout: number of authentication timeout to start recording * @start_rx_deauth: number of Rx deauth to start recording * @start_tx_deauth: number of Tx deauth to start recording * @start_assoc_denied: number of denied association to start recording * @start_assoc_timeout: number of association timeout to start recording + * @start_connection_loss: number of connection loss to start recording */ struct iwl_fw_dbg_trigger_mlme { u8 stop_auth_denied; @@ -601,7 +603,8 @@ struct iwl_fw_dbg_trigger_mlme { u8 stop_assoc_denied; u8 stop_assoc_timeout; - __le16 reserved2; + u8 stop_connection_loss; + u8 reserved; u8 start_auth_denied; u8 start_auth_timeout; @@ -610,7 +613,8 @@ struct iwl_fw_dbg_trigger_mlme { u8 start_assoc_denied; u8 start_assoc_timeout; - __le16 reserved4; + u8 start_connection_loss; + u8 reserved2; } __packed; /** diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h index ef78ebc23a0f..d5522a161242 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h @@ -1484,6 +1484,8 @@ int iwl_mvm_fw_dbg_collect_trig(struct iwl_mvm *mvm, unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm, struct ieee80211_vif *vif, bool tdls, bool cmd_q); +void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif, + const char *errmsg); static inline bool iwl_fw_dbg_trigger_vif_match(struct iwl_fw_dbg_trigger_tlv *trig, struct ieee80211_vif *vif) diff --git a/drivers/net/wireless/iwlwifi/mvm/ops.c b/drivers/net/wireless/iwlwifi/mvm/ops.c index e656511bdbec..a08b03d58d4b 100644 --- a/drivers/net/wireless/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/iwlwifi/mvm/ops.c @@ -1161,7 +1161,7 @@ static void iwl_mvm_d0i3_disconnect_iter(void *data, u8 *mac, if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.assoc && mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) - ieee80211_connection_loss(vif); + iwl_mvm_connection_loss(mvm, vif, "D0i3"); } void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) diff --git a/drivers/net/wireless/iwlwifi/mvm/time-event.c b/drivers/net/wireless/iwlwifi/mvm/time-event.c index 647822366fe5..fd7b0d36f9a6 100644 --- a/drivers/net/wireless/iwlwifi/mvm/time-event.c +++ b/drivers/net/wireless/iwlwifi/mvm/time-event.c @@ -187,7 +187,8 @@ static bool iwl_mvm_te_check_disconnect(struct iwl_mvm *mvm, return false; if (errmsg) IWL_ERR(mvm, "%s\n", errmsg); - ieee80211_connection_loss(vif); + + iwl_mvm_connection_loss(mvm, vif, errmsg); return true; } @@ -210,7 +211,8 @@ iwl_mvm_te_handle_notify_csa(struct iwl_mvm *mvm, break; case NL80211_IFTYPE_STATION: if (!notif->status) { - ieee80211_connection_loss(te_data->vif); + iwl_mvm_connection_loss(mvm, vif, + "CSA TE failed to start"); break; } iwl_mvm_csa_client_absent(mvm, te_data->vif); diff --git a/drivers/net/wireless/iwlwifi/mvm/utils.c b/drivers/net/wireless/iwlwifi/mvm/utils.c index 54e3556842c4..bc55a8b82db6 100644 --- a/drivers/net/wireless/iwlwifi/mvm/utils.c +++ b/drivers/net/wireless/iwlwifi/mvm/utils.c @@ -965,3 +965,27 @@ unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm, return mvm->cfg->base_params->wd_timeout; } } + +void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif, + const char *errmsg) +{ + struct iwl_fw_dbg_trigger_tlv *trig; + struct iwl_fw_dbg_trigger_mlme *trig_mlme; + + if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME)) + goto out; + + trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME); + trig_mlme = (void *)trig->data; + if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig)) + goto out; + + if (trig_mlme->stop_connection_loss && + --trig_mlme->stop_connection_loss) + goto out; + + iwl_mvm_fw_dbg_collect_trig(mvm, trig, "%s", errmsg); + +out: + ieee80211_connection_loss(vif); +}