wifi: mac80211: don't reset the TXQ scheduling round number

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A round is ended when ieee80211_next_txq() meets a txq whose remembered
round number is the current one, meaning it has gone full circle.

When the AC exceeds the airtime limit, ieee80211_txq_schedule_start()
sets the round number to 0 to close the round. The next open round is
1. A txq from an earlier round 1 still remembers the "1", so the next
round stops on it and serves nothing.

Fix: use a separate open/closed flag and let the round number keep
counting.

Testing: ~4200 skipped selections per 20s without the fix and 20
skipped selections per 20s with the fix on ath11k (with my AQL series
applied) at BE 500/1000.

Fixes: 8e4bac0671 ("wifi: mac80211: add a per-PHY AQL limit to improve fairness")
Assisted-by: Claude:claude-opus-5
Signed-off-by: Julius Bairaktaris <julius@bairaktaris.de>
Reviewed-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://patch.msgid.link/20260908144155.756569-1-julius@bairaktaris.de
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

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This commit is contained in:

Julius Bairaktaris 2026-09-08 16:41:55 +02:00 • committed by Johannes Berg

parent 5c7b043cb1

commit 8ea81827d3

2 changed files with 5 additions and 4 deletions

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1

net/mac80211/ieee80211_i.h

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8

net/mac80211/tx.c

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