On Mon, Nov 14, 2016 at 09:45:36AM +0100, Stanislaw Gruszka wrote: > Could you check below patch and see if it helps? If it does not, > could you printk sta->ht_cap.ampdu_density and ba_size values > and provide them here. Actually please print parameters from below patch. I think ba_size should be based on per TID buf_size instead of ampdu_factor, in case STA has buf size different for some TIDs. Also adding Felix to cc since my orginal patch: http://marc.info/?l=linux-wireless&m=147809595316289&w=2 was shamelessly stolen from mt76 driver. Perhaps Felix could provide us some expertise. Thanks Stanislaw diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c index 2515702..35bc38c 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c @@ -7950,6 +7950,8 @@ int rt2800_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct rt2x00_sta *sta_priv = (struct rt2x00_sta *)sta->drv_priv; int ret = 0; + printk("action %d sta %pM tid %u buf_size %u ampdu_factor %u\n", params->action, sta->addr, params->tid, params->buf_size, sta->ht_cap.ampdu_factor); + /* * Don't allow aggregation for stations the hardware isn't aware * of because tx status reports for frames to an unknown station