diff options
| author | Michal Kazior <michal.kazior@tieto.com> | 2016-03-06 17:14:43 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@qca.qualcomm.com> | 2016-03-06 17:31:12 +0300 |
| commit | 426e10eaf76d7229ed6c2978f0d473d04ba0b377 (patch) | |
| tree | 61e542d7a2334099f00092a69e5a8ed38a61d985 /drivers/net/wireless/ath/ath10k/mac.h | |
| parent | 3cc0fef6170dce8e7d4ec29afb4f34267fb9bf14 (diff) | |
| download | linux-426e10eaf76d7229ed6c2978f0d473d04ba0b377.tar.xz | |
ath10k: implement push-pull tx
The current/old tx path design was that host, at
its own leisure, pushed tx frames to the device.
For HTT there was ~1000-1400 msdu queue depth.
After reaching that limit the driver would request
mac80211 to stop queues. There was little control
over what packets got in there as far as
DA/RA was considered so it was rather easy to
starve per-station traffic flows.
With MU-MIMO this became a significant problem
because the queue depth was insufficient to buffer
frames from multiple clients (which could have
different signal quality and capabilities) in an
efficient fashion.
Hence the new tx path in 10.4 was introduced: a
pull-push mode.
Firmware and host can share tx queue state via
DMA. The state is logically a 2 dimensional array
addressed via peer_id+tid pair. Each entry is a
counter (either number of bytes or packets. Host
keeps it updated and firmware uses it for
scheduling Tx pull requests to host.
This allows MU-MIMO to become a lot more effective
with 10+ clients.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/mac.h')
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/mac.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath10k/mac.h b/drivers/net/wireless/ath/ath10k/mac.h index 453f606a250e..2c3327beb445 100644 --- a/drivers/net/wireless/ath/ath10k/mac.h +++ b/drivers/net/wireless/ath/ath10k/mac.h @@ -76,6 +76,11 @@ void ath10k_mac_vif_tx_lock(struct ath10k_vif *arvif, int reason); void ath10k_mac_vif_tx_unlock(struct ath10k_vif *arvif, int reason); bool ath10k_mac_tx_frm_has_freq(struct ath10k *ar); void ath10k_mac_tx_push_pending(struct ath10k *ar); +int ath10k_mac_tx_push_txq(struct ieee80211_hw *hw, + struct ieee80211_txq *txq); +struct ieee80211_txq *ath10k_mac_txq_lookup(struct ath10k *ar, + u16 peer_id, + u8 tid); static inline struct ath10k_vif *ath10k_vif_to_arvif(struct ieee80211_vif *vif) { |