Am Donnerstag 21 Oktober 2010 schrieb Paul Stewart:
> Add state, work proc and debugging parameters for monitoring
> transmit-rate changes.
>
> Signed-off-by: Paul Stewart <pstew@xxxxxxxxxx>
> ---
[...]
> diff --git a/net/mac80211/status.c b/net/mac80211/status.c
> index 3153c19..564aa2e 100644
> --- a/net/mac80211/status.c
> +++ b/net/mac80211/status.c
> @@ -154,6 +154,24 @@ static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb)
> }
>
> ieee80211_queue_work(&local->hw, &local->recalc_smps);
> + } else if (ieee80211_is_data(mgmt->frame_control) &&
> + sdata->vif.type == NL80211_IFTYPE_STATION) {
> + struct ieee80211_if_managed *ifmgd;
> + ifmgd = &sta->sdata->u.mgd;
> + if (ifmgd->cqm_bitrate_thold != 0 &&
> + (ifmgd->last_cqm_tx_rate.idx != sta->last_tx_rate.idx ||
> + (ifmgd->last_cqm_tx_rate.flags &
> + (IEEE80211_TX_RC_MCS | IEEE80211_TX_RC_40_MHZ_WIDTH |
> + IEEE80211_TX_RC_SHORT_GI)) !=
> + (sta->last_tx_rate.flags &
> + (IEEE80211_TX_RC_MCS | IEEE80211_TX_RC_40_MHZ_WIDTH |
> + IEEE80211_TX_RC_SHORT_GI)) ||
> + sdata->u.mgd.last_cqm_bitrate == 0)) {
> + ifmgd->last_cqm_tx_rate = sta->last_tx_rate;
> + ifmgd->tx_bitrate_changed = true;
> + ieee80211_queue_work(&local->hw,
> + &ifmgd->bitrate_notify_work);
> + }
> }
> }
Not sure but wouldn't that trigger a lot of unnecessary processing when a rate
gets probed by the rc algortihm? You might want to filter out probe frames
based on IEEE80211_TX_CTL_RATE_CTRL_PROBE as otherwise you could end up with
sending a huge number of events to userspace ...
Helmut
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