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-rw-r--r--net/mac80211/status.c74
1 files changed, 0 insertions, 74 deletions
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index e679b7c..2c51742 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -12,7 +12,6 @@
#include <linux/export.h>
#include <linux/etherdevice.h>
-#include <linux/time.h>
#include <net/mac80211.h>
#include <asm/unaligned.h>
#include "ieee80211_i.h"
@@ -515,73 +514,6 @@ static void ieee80211_report_used_skb(struct ieee80211_local *local,
}
/*
- * Measure Tx frame completion and removal time for Tx latency statistics
- * calculation. A single Tx frame latency should be measured from when it
- * is entering the Kernel until we receive Tx complete confirmation indication
- * and remove the skb.
- */
-static void ieee80211_tx_latency_end_msrmnt(struct ieee80211_local *local,
- struct sk_buff *skb,
- struct sta_info *sta,
- struct ieee80211_hdr *hdr)
-{
- u32 msrmnt;
- u16 tid;
- u8 *qc;
- int i, bin_range_count;
- u32 *bin_ranges;
- __le16 fc;
- struct ieee80211_tx_latency_stat *tx_lat;
- struct ieee80211_tx_latency_bin_ranges *tx_latency;
- ktime_t skb_arv = skb->tstamp;
-
- tx_latency = rcu_dereference(local->tx_latency);
-
- /* assert Tx latency stats are enabled & frame arrived when enabled */
- if (!tx_latency || !ktime_to_ns(skb_arv))
- return;
-
- fc = hdr->frame_control;
-
- if (!ieee80211_is_data(fc)) /* make sure it is a data frame */
- return;
-
- /* get frame tid */
- if (ieee80211_is_data_qos(hdr->frame_control)) {
- qc = ieee80211_get_qos_ctl(hdr);
- tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
- } else {
- tid = 0;
- }
-
- tx_lat = &sta->tx_lat[tid];
-
- /* Calculate the latency */
- msrmnt = ktime_to_ms(ktime_sub(ktime_get(), skb_arv));
-
- if (tx_lat->max < msrmnt) /* update stats */
- tx_lat->max = msrmnt;
- tx_lat->counter++;
- tx_lat->sum += msrmnt;
-
- if (!tx_lat->bins) /* bins not activated */
- return;
-
- /* count how many Tx frames transmitted with the appropriate latency */
- bin_range_count = tx_latency->n_ranges;
- bin_ranges = tx_latency->ranges;
-
- for (i = 0; i < bin_range_count; i++) {
- if (msrmnt <= bin_ranges[i]) {
- tx_lat->bins[i]++;
- break;
- }
- }
- if (i == bin_range_count) /* msrmnt is bigger than the biggest range */
- tx_lat->bins[i]++;
-}
-
-/*
* Use a static threshold for now, best value to be determined
* by testing ...
* Should it depend on:
@@ -853,12 +785,6 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
if (acked)
sta->last_ack_signal = info->status.ack_signal;
-
- /*
- * Measure frame removal for tx latency
- * statistics calculation
- */
- ieee80211_tx_latency_end_msrmnt(local, skb, sta, hdr);
}
rcu_read_unlock();
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