Return-path: Received: from mail022-1.exch022.serverdata.net ([64.78.22.98]:57709 "EHLO mail022-1.exch022.serverdata.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754024Ab2KZN5P (ORCPT ); Mon, 26 Nov 2012 08:57:15 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Date: Mon, 26 Nov 2012 05:57:14 -0800 From: saravanad@posedge.com To: Cc: Subject: [RFC] mac80211: add debugfs file for last ack signal Message-ID: <99ae2e3d5097457e6db0c0b34eeec950@posedge.com> (sfid-20121126_145718_477059_2B67FB74) Sender: linux-wireless-owner@vger.kernel.org List-ID: Add a debugfs file showing the signal strength of the ack frame that is received for the currently sent tx packet. Signed-off-by: Saravana --- The diff file is generated from wireless-testing git tree. net/mac80211/debugfs_sta.c | 2 ++ net/mac80211/sta_info.h | 2 ++ net/mac80211/status.c | 2 ++ 3 files changed, 6 insertions(+), 0 deletions(-) diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c index 89281d2..1566941 100644 --- a/net/mac80211/debugfs_sta.c +++ b/net/mac80211/debugfs_sta.c @@ -53,6 +53,7 @@ static const struct file_operations sta_ ##name## _ops = { \ STA_FILE(aid, sta.aid, D); STA_FILE(dev, sdata->name, S); 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, size_t count, loff_t *ppos) @@ -369,6 +370,7 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta) DEBUGFS_ADD(dev); DEBUGFS_ADD(last_signal); DEBUGFS_ADD(ht_capa); + DEBUGFS_ADD(last_ack_signal); DEBUGFS_ADD_COUNTER(rx_packets, rx_packets); DEBUGFS_ADD_COUNTER(tx_packets, tx_packets); diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h index 776f3d0..e1f1fa2 100644 --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -249,6 +249,7 @@ struct sta_ampdu_mlme { * @rx_dropped: number of dropped MPDUs 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 + * @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) * @tx_filtered_count: number of frames the hardware filtered for this STA * @tx_retry_failed: number of frames that failed retry @@ -328,6 +329,7 @@ struct sta_info { unsigned long rx_dropped; int last_signal; struct ewma avg_signal; + int last_ack_signal; /* Plus 1 for non-QoS frames */ __le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1]; diff --git a/net/mac80211/status.c b/net/mac80211/status.c index ab63237..c3c133c 100644 --- a/net/mac80211/status.c +++ b/net/mac80211/status.c @@ -539,6 +539,8 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) sta->lost_packets = 0; } } + if (acked) + sta->last_ack_signal = info->status.ack_signal; } rcu_read_unlock();