Return-path: Received: from smtp.codeaurora.org ([198.145.29.96]:39548 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754416AbeDMLeU (ORCPT ); Fri, 13 Apr 2018 07:34:20 -0400 From: Balaji Pothunoori To: linux-wireless@vger.kernel.org Cc: bpothuno@codeaurora.org Subject: [PATCH 2/3] mac80211: average ack rssi support for data frames Date: Fri, 13 Apr 2018 17:04:02 +0530 Message-Id: <1523619243-1898-3-git-send-email-bpothuno@codeaurora.org> (sfid-20180413_133435_071888_0E36CCD4) In-Reply-To: <1523619243-1898-2-git-send-email-bpothuno@codeaurora.org> References: <1523619243-1898-2-git-send-email-bpothuno@codeaurora.org> Sender: linux-wireless-owner@vger.kernel.org List-ID: The driver will process the RSSI if available and send it to mac80211. mac80211 will compute the weighted average of ack RSSI for stations. Signed-off-by: Balaji Pothunoori --- net/mac80211/sta_info.c | 10 ++++++++++ net/mac80211/sta_info.h | 2 ++ net/mac80211/status.c | 2 ++ 3 files changed, 14 insertions(+) diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index 655c3d8..fad6a84 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -357,6 +357,7 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, sta->last_connected = ktime_get_seconds(); ewma_signal_init(&sta->rx_stats_avg.signal); + ewma_avg_signal_init(&sta->avg_ack_signal); for (i = 0; i < ARRAY_SIZE(sta->rx_stats_avg.chain_signal); i++) ewma_signal_init(&sta->rx_stats_avg.chain_signal[i]); @@ -2294,6 +2295,15 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) sinfo->ack_signal = sta->status_stats.last_ack_signal; sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL); } + if (ieee80211_hw_check(&sta->local->hw, REPORTS_TX_ACK_STATUS)) { + if (!(sinfo->filled & + BIT_ULL(NL80211_STA_INFO_DATA_ACK_SIGNAL_AVG))) { + sinfo->avg_ack_signal = + -(s8)ewma_avg_signal_read(&sta->avg_ack_signal); + sinfo->filled |= + BIT_ULL(NL80211_STA_INFO_DATA_ACK_SIGNAL_AVG); + } + } } u32 sta_get_expected_throughput(struct sta_info *sta) diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h index f64eb86..1028924 100644 --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -119,6 +119,7 @@ enum ieee80211_sta_info_flags { #define HT_AGG_STATE_START_CB 6 #define HT_AGG_STATE_STOP_CB 7 +DECLARE_EWMA(avg_signal, 10, 8) enum ieee80211_agg_stop_reason { AGG_STOP_DECLINED, AGG_STOP_LOCAL_REQUEST, @@ -581,6 +582,7 @@ struct sta_info { struct cfg80211_chan_def tdls_chandef; + struct ewma_avg_signal avg_ack_signal; /* keep last! */ struct ieee80211_sta sta; }; diff --git a/net/mac80211/status.c b/net/mac80211/status.c index 743e89c..93dc971 100644 --- a/net/mac80211/status.c +++ b/net/mac80211/status.c @@ -195,6 +195,8 @@ static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb) sta->status_stats.last_ack_signal = (s8)txinfo->status.ack_signal; sta->status_stats.ack_signal_filled = true; + ewma_avg_signal_add(&sta->avg_ack_signal, + -(txinfo->status.ack_signal)); } } -- 2.7.4