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iwlwifi: mvm: add trigger for firmware dump upon MLME failures

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This will allow to catch failures in MLME and get the
firmware data when this happens.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Emmanuel Grumbach 2015-02-10 14:29:48 +02:00
parent b916693a77
commit d42f535034
3 changed files with 102 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h
View File

@ -246,7 +246,7 @@ iwl_fw_error_next_data(struct iwl_fw_error_dump_data *data)
* @FW_DBG_TRIGGER_CHANNEL_SWITCH: trigger log collection upon channel switch.
* @FW_DBG_TRIGGER_FW_NOTIF: trigger log collection when the firmware sends a
* command response or a notification.
* @FW_DB_TRIGGER_RESERVED: reserved
* @FW_DBG_TRIGGER_MLME: trigger log collection upon MLME event.
* @FW_DBG_TRIGGER_STATS: trigger log collection upon statistics threshold.
* @FW_DBG_TRIGGER_RSSI: trigger log collection when the rssi of the beacon
* goes below a threshold.
@ -260,7 +260,7 @@ enum iwl_fw_dbg_trigger {
FW_DBG_TRIGGER_MISSED_BEACONS,
FW_DBG_TRIGGER_CHANNEL_SWITCH,
FW_DBG_TRIGGER_FW_NOTIF,
FW_DB_TRIGGER_RESERVED,
FW_DBG_TRIGGER_MLME,
FW_DBG_TRIGGER_STATS,
FW_DBG_TRIGGER_RSSI,
FW_DBG_TRIGGER_TXQ_TIMERS,

35
drivers/net/wireless/iwlwifi/iwl-fw-file.h
View File

@ -578,6 +578,41 @@ struct iwl_fw_dbg_trigger_low_rssi {
__le32 rssi;
} __packed;
/**
* struct iwl_fw_dbg_trigger_mlme - configures trigger for mlme events
* @stop_auth_denied: number of denied authentication to collect
* @stop_auth_timeout: number of authentication timeout to collect
* @stop_rx_deauth: number of Rx deauth before to collect
* @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
* @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
*/
struct iwl_fw_dbg_trigger_mlme {
u8 stop_auth_denied;
u8 stop_auth_timeout;
u8 stop_rx_deauth;
u8 stop_tx_deauth;
u8 stop_assoc_denied;
u8 stop_assoc_timeout;
__le16 reserved2;
u8 start_auth_denied;
u8 start_auth_timeout;
u8 start_rx_deauth;
u8 start_tx_deauth;
u8 start_assoc_denied;
u8 start_assoc_timeout;
__le16 reserved4;
} __packed;
/**
* struct iwl_fw_dbg_trigger_txq_timer - configures the Tx queue's timer
* @command_queue: timeout for the command queue in ms

65
drivers/net/wireless/iwlwifi/mvm/mac80211.c
View File

@ -3956,6 +3956,69 @@ static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
mutex_unlock(&mvm->mutex);
}
static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const struct ieee80211_event *event)
{
#define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _str...) \
do { \
if ((_cnt) && --(_cnt)) \
break; \
snprintf(_buf, sizeof(_buf), ##_str); \
iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _buf, \
sizeof(_buf)); \
} while (0)
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_fw_dbg_trigger_tlv *trig;
struct iwl_fw_dbg_trigger_mlme *trig_mlme;
char buf[32];
if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
return;
if (event->u.mlme.status == MLME_SUCCESS)
return;
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))
return;
memset(buf, 0, sizeof(buf));
if (event->u.mlme.data == ASSOC_EVENT) {
if (event->u.mlme.status == MLME_DENIED)
CHECK_MLME_TRIGGER(mvm, trig, buf,
trig_mlme->stop_assoc_denied,
"DENIED ASSOC: reason %d",
event->u.mlme.reason);
else if (event->u.mlme.status == MLME_TIMEOUT)
CHECK_MLME_TRIGGER(mvm, trig, buf,
trig_mlme->stop_assoc_timeout,
"ASSOC TIMEOUT");
} else if (event->u.mlme.data == AUTH_EVENT) {
if (event->u.mlme.status == MLME_DENIED)
CHECK_MLME_TRIGGER(mvm, trig, buf,
trig_mlme->stop_auth_denied,
"DENIED AUTH: reason %d",
event->u.mlme.reason);
else if (event->u.mlme.status == MLME_TIMEOUT)
CHECK_MLME_TRIGGER(mvm, trig, buf,
trig_mlme->stop_auth_timeout,
"AUTH TIMEOUT");
} else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
CHECK_MLME_TRIGGER(mvm, trig, buf,
trig_mlme->stop_rx_deauth,
"DEAUTH RX %d", event->u.mlme.reason);
} else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
CHECK_MLME_TRIGGER(mvm, trig, buf,
trig_mlme->stop_tx_deauth,
"DEAUTH TX %d", event->u.mlme.reason);
}
#undef CHECK_MLME_TRIGGER
}
const struct ieee80211_ops iwl_mvm_hw_ops = {
.tx = iwl_mvm_mac_tx,
.ampdu_action = iwl_mvm_mac_ampdu_action,
@ -4009,6 +4072,8 @@ const struct ieee80211_ops iwl_mvm_hw_ops = {
.tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
.tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
.event_callback = iwl_mvm_mac_event_callback,
CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
#ifdef CONFIG_PM_SLEEP