diff options
| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2015-02-03 14:29:36 +0200 |
|---|---|---|
| committer | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2015-03-02 08:20:32 +0200 |
| commit | 3ec50b5eec6b0e92f862ba48c837fa5437dcd4a4 (patch) | |
| tree | 647c65d1339f0125b4f87a134a82582e92f3f2ff | |
| parent | 5a756c20c44fe8b41d8adce090a2cdc95f10ab49 (diff) | |
iwlwifi: mvm: add trigger for firmware dump upon low RSSI
Lots of issues can be caught when the RSSI drops. Add the
ability to collect the firmware data at that point.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-fw-file.h | 8 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/rx.c | 19 |
3 files changed, 30 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h b/drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h index 95bef179ddc1..37b38a585dd1 100644 --- a/drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h +++ b/drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h @@ -248,6 +248,8 @@ iwl_fw_error_next_data(struct iwl_fw_error_dump_data *data) * command response or a notification. * @FW_DB_TRIGGER_RESERVED: reserved * @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. */ enum iwl_fw_dbg_trigger { FW_DBG_TRIGGER_INVALID = 0, @@ -258,6 +260,7 @@ enum iwl_fw_dbg_trigger { FW_DBG_TRIGGER_FW_NOTIF, FW_DB_TRIGGER_RESERVED, FW_DBG_TRIGGER_STATS, + FW_DBG_TRIGGER_RSSI, /* must be last */ FW_DBG_TRIGGER_MAX, diff --git a/drivers/net/wireless/iwlwifi/iwl-fw-file.h b/drivers/net/wireless/iwlwifi/iwl-fw-file.h index de0e96d76fa3..5ea381861d5d 100644 --- a/drivers/net/wireless/iwlwifi/iwl-fw-file.h +++ b/drivers/net/wireless/iwlwifi/iwl-fw-file.h @@ -566,6 +566,14 @@ struct iwl_fw_dbg_trigger_stats { } __packed; /** + * struct iwl_fw_dbg_trigger_low_rssi - trigger for low beacon RSSI + * @rssi: RSSI value to trigger at + */ +struct iwl_fw_dbg_trigger_low_rssi { + __le32 rssi; +} __packed; + +/** * struct iwl_fw_dbg_conf_tlv - a TLV that describes a debug configuration. * @id: conf id * @usniffer: should the uSniffer image be used diff --git a/drivers/net/wireless/iwlwifi/mvm/rx.c b/drivers/net/wireless/iwlwifi/mvm/rx.c index 9b2c537b5e95..6177e24f4c01 100644 --- a/drivers/net/wireless/iwlwifi/mvm/rx.c +++ b/drivers/net/wireless/iwlwifi/mvm/rx.c @@ -345,6 +345,25 @@ int iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, struct iwl_mvm_sta *mvmsta; mvmsta = iwl_mvm_sta_from_mac80211(sta); rs_update_last_rssi(mvm, &mvmsta->lq_sta, rx_status); + + if (iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_RSSI) && + ieee80211_is_beacon(hdr->frame_control)) { + struct iwl_fw_dbg_trigger_tlv *trig; + struct iwl_fw_dbg_trigger_low_rssi *rssi_trig; + bool trig_check; + s32 rssi; + + trig = iwl_fw_dbg_get_trigger(mvm->fw, + FW_DBG_TRIGGER_RSSI); + rssi_trig = (void *)trig->data; + rssi = le32_to_cpu(rssi_trig->rssi); + + trig_check = + iwl_fw_dbg_trigger_check_stop(mvm, mvmsta->vif, + trig); + if (trig_check && rx_status->signal < rssi) + iwl_mvm_fw_dbg_collect_trig(mvm, trig, NULL, 0); + } } rcu_read_unlock(); |