Comment 153 for bug 971809

However I thing minstrel is activated.
I have activated mac80211 debug in the kernel before compiling and now there is :

root@dragonfly:/sys/kernel/debug/ieee80211/phy0/netdev:wlan0/stations/00:24:d4:69:f4:14# ls
agg_status current_tx_rate ht_capa last_rx_rate node_stat rx_bytes rx_fragments tx_filtered tx_retry_count wep_weak_iv_count
beacon_loss_count dev inactive_ms last_seq_ctrl num_ps_buf_frames rx_dropped rx_packets tx_fragments tx_retry_failed
connected_time flags last_ack_signal last_signal rc_stats rx_duplicates tx_bytes tx_packets vht_capa

looks like what's in http://wireless.kernel.org/en/developers/Documentation/mac80211/RateControl/minstrel

But I can't remember if it was like that before enabling mac80211 debug in the kernel.