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Commit db94357d authored by Saravana's avatar Saravana Committed by Johannes Berg
Browse files

mac80211: add debugfs file for last ack signal 



Add a debugfs file showing the signal strength
of the ack frame that is received for the
currently sent tx packet

Signed-off-by: default avatarSaravana <saravanad@posedge.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent dbeca2ea

net/mac80211/debugfs_sta.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -53,6 +53,7 @@ static const struct file_operations sta_ ##name## _ops = { \ 
STA_FILE(aid, sta.aid, D);

STA_FILE(aid, sta.aid, D);

STA_FILE(dev, sdata->name, S);

STA_FILE(dev, sdata->name, S);

STA_FILE(last_signal, last_signal, D);

STA_FILE(last_signal, last_signal, D);

STA_FILE(last_ack_signal, last_ack_signal, D);





static ssize_t sta_flags_read(struct file *file, char __user *userbuf,

static ssize_t sta_flags_read(struct file *file, char __user *userbuf,

			      size_t count, loff_t *ppos)

			      size_t count, loff_t *ppos)
@@ -369,6 +370,7 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta) 
	DEBUGFS_ADD(dev);

	DEBUGFS_ADD(dev);

	DEBUGFS_ADD(last_signal);

	DEBUGFS_ADD(last_signal);

	DEBUGFS_ADD(ht_capa);

	DEBUGFS_ADD(ht_capa);

	DEBUGFS_ADD(last_ack_signal);





	DEBUGFS_ADD_COUNTER(rx_packets, rx_packets);

	DEBUGFS_ADD_COUNTER(rx_packets, rx_packets);

	DEBUGFS_ADD_COUNTER(tx_packets, tx_packets);

	DEBUGFS_ADD_COUNTER(tx_packets, tx_packets);

net/mac80211/sta_info.h

+2 −0
Original line number Original line Diff line number Diff line
@@ -250,6 +250,7 @@ struct sta_ampdu_mlme { 
 * @rx_dropped: number of dropped MPDUs from this STA

 * @rx_dropped: number of dropped MPDUs from this STA

 * @last_signal: signal of last received frame from this STA

 * @last_signal: signal of last received frame from this STA

 * @avg_signal: moving average of signal of received frames from this STA

 * @avg_signal: moving average of signal of received frames from this STA

 * @last_ack_signal: signal of last received Ack frame from this STA

 * @last_seq_ctrl: last received seq/frag number from this STA (per RX queue)

 * @last_seq_ctrl: last received seq/frag number from this STA (per RX queue)

 * @tx_filtered_count: number of frames the hardware filtered for this STA

 * @tx_filtered_count: number of frames the hardware filtered for this STA

 * @tx_retry_failed: number of frames that failed retry

 * @tx_retry_failed: number of frames that failed retry
@@ -329,6 +330,7 @@ struct sta_info { 
	unsigned long rx_dropped;

	unsigned long rx_dropped;

	int last_signal;

	int last_signal;

	struct ewma avg_signal;

	struct ewma avg_signal;

	int last_ack_signal;

	/* Plus 1 for non-QoS frames */

	/* Plus 1 for non-QoS frames */

	__le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1];

	__le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1];

net/mac80211/status.c

+3 −0
Original line number Original line Diff line number Diff line
@@ -539,6 +539,9 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) 
				sta->lost_packets = 0;

				sta->lost_packets = 0;

			}

			}

		}

		}



		if (acked)

			sta->last_ack_signal = info->status.ack_signal;

	}

	}





	rcu_read_unlock();

	rcu_read_unlock();