Commit a78b26ff authored by Venkateswara Naralasetty's avatar Venkateswara Naralasetty Committed by Johannes Berg
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mac80211: Add tx ack signal support in sta info 



This allows users to get ack signal strength of
last transmitted frame.

Signed-off-by: default avatarVenkateswara Naralasetty <vnaralas@codeaurora.org>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent c4b50cd3

include/net/mac80211.h

+1 −0
Original line number Diff line number Diff line
@@ -934,6 +934,7 @@ struct ieee80211_tx_info { 
			u8 ampdu_len;

			u8 antenna;

			u16 tx_time;

			bool is_valid_ack_signal;

			void *status_driver_data[19 / sizeof(void *)];

		} status;

		struct {

net/mac80211/sta_info.c

+6 −0
Original line number Diff line number Diff line
@@ -2287,6 +2287,12 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 
		sinfo->filled |= BIT(NL80211_STA_INFO_EXPECTED_THROUGHPUT);

		sinfo->expected_throughput = thr;

	}



	if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL)) &&

	    sta->status_stats.ack_signal_filled) {

		sinfo->ack_signal = sta->status_stats.last_ack_signal;

		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL);

	}

}



u32 sta_get_expected_throughput(struct sta_info *sta)

net/mac80211/sta_info.h

+2 −0
Original line number Diff line number Diff line
@@ -548,6 +548,8 @@ struct sta_info { 
		u64 msdu_retries[IEEE80211_NUM_TIDS + 1];

		u64 msdu_failed[IEEE80211_NUM_TIDS + 1];

		unsigned long last_ack;

		s8 last_ack_signal;

		bool ack_signal_filled;

	} status_stats;



	/* Updated from TX path only, no locking requirements */

net/mac80211/status.c

+11 −2
Original line number Diff line number Diff line
@@ -187,9 +187,16 @@ static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb) 
	struct ieee80211_mgmt *mgmt = (void *) skb->data;

	struct ieee80211_local *local = sta->local;

	struct ieee80211_sub_if_data *sdata = sta->sdata;

	struct ieee80211_tx_info *txinfo = IEEE80211_SKB_CB(skb);



	if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))

	if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {

		sta->status_stats.last_ack = jiffies;

		if (txinfo->status.is_valid_ack_signal) {

			sta->status_stats.last_ack_signal =

					 (s8)txinfo->status.ack_signal;

			sta->status_stats.ack_signal_filled = true;

		}

	}



	if (ieee80211_is_data_qos(mgmt->frame_control)) {

		struct ieee80211_hdr *hdr = (void *) skb->data;
@@ -486,7 +493,9 @@ static void ieee80211_report_ack_skb(struct ieee80211_local *local, 
			if (ieee80211_is_nullfunc(hdr->frame_control) ||

			    ieee80211_is_qos_nullfunc(hdr->frame_control))

				cfg80211_probe_status(sdata->dev, hdr->addr1,

						      cookie, acked, 0, false,

						      cookie, acked,

						      info->status.ack_signal,

						      info->status.is_valid_ack_signal,

						      GFP_ATOMIC);

			else

				cfg80211_mgmt_tx_status(&sdata->wdev, cookie,

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