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mac80211: Update last_tx_rate only for data frames 

The last_tx_rate field was also updated for non-data frames that are
often sent with a lower rate (for example management frames at 1 Mbps).
This is confusing when the data rate is actually much higher.

Hence, only update the last_tx_rate field with tx rate information
gathered from last data frames.

If the rate control algorithm filled in txrc.reported_rate we don't need
to verify this information.

Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Helmut Schaa 2010-12-01 16:34:45 +01:00 committed by John W. Linville
parent 5f79ed3b1a
commit c1ce5a74d1
1 changed files with 4 additions and 3 deletions
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7
net/mac80211/tx.c
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@ -666,10 +666,11 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
if (unlikely(info->control.rates[0].idx < 0))
return TX_DROP;
if (txrc.reported_rate.idx < 0)
if (txrc.reported_rate.idx < 0) {
txrc.reported_rate = info->control.rates[0];
if (tx->sta)
if (tx->sta && ieee80211_is_data(hdr->frame_control))
tx->sta->last_tx_rate = txrc.reported_rate;
} else if (tx->sta)
tx->sta->last_tx_rate = txrc.reported_rate;
if (unlikely(!info->control.rates[0].count))