[Olsr-users] Fwd: Question about hidden node behavior

[Juliusz Chroboczek]

> imho a quick peek at the code looks like it usually drops, as soon as its
> queues are full,..

When the driver's queue reaches ATH_MAX_QDEPTH, the driver calls
ath_mac80211_stop_queue, which in turn calls ieee80211_stop_queue, which
in turn calls netif_stop_subqueue, hence netif_tx_stop_queue, which prevents
any more packets from being queued to the device.

Since ATH_MAX_QDEPTH is set to less than 1/4 the queue size, the queue
should normally never overflow.

                                        Juliusz