iwlegacy: add accidentally removed comments (8f29b456) · Commits · jan.koester / Linux

drivers/net/wireless/iwlegacy/4965-mac.c

+27 −0

Original line number	Diff line number	Diff line
		@@ -1411,6 +1411,33 @@ void il4965_reply_stats(struct il_priv *il,
		il4965_rx_stats(il, rxb);
		}


		/*
		* mac80211 queues, ACs, hardware queues, FIFOs.
		*
		* Cf. http://wireless.kernel.org/en/developers/Documentation/mac80211/queues
		*
		* Mac80211 uses the following numbers, which we get as from it
		* by way of skb_get_queue_mapping(skb):
		*
		* VO 0
		* VI 1
		* BE 2
		* BK 3
		*
		*
		* Regular (not A-MPDU) frames are put into hardware queues corresponding
		* to the FIFOs, see comments in iwl-prph.h. Aggregated frames get their
		* own queue per aggregation session (RA/TID combination), such queues are
		* set up to map into FIFOs too, for which we need an AC->FIFO mapping. In
		* order to map frames to the right queue, we also need an AC->hw queue
		* mapping. This is implemented here.
		*
		* Due to the way hw queues are set up (by the hw specific modules like
		* iwl-4965.c), the AC->hw queue mapping is the identity
		* mapping.
		*/

		static const u8 tid_to_ac[] = {
		IEEE80211_AC_BE,
		IEEE80211_AC_BK,