rtw88: Add update beacon flow for AP mode

To support stations in power saving mode, AP should notify stations
that there are frames buffered at the AP via TIM during beacons.
Driver used to transmit identical beacons that were downloaded to
hardware during the initiation phase. This beacon will become
obsolete over time.

If the beacon does not contain sufficient information, station would
not be able to percept that there is data to receive. Hence it won't
wake up and start the PS-poll procedure, this could lead to timeout
and/or lost data segments. In order to resolve this issue, driver will
now download beacon to hardware whenever the content is updated.

Enable hardware to update dtim_count for more efficiency, this reduces
the overhead of downloading beacon at every beacon interval since most
of the time only the dtim_count needs to be updated.

Change queue mapping for broadcast/multicast frames to high queue, so
these frames can be prioritized and sent when dtim_count is zero.

Signed-off-by: Po-Hao Huang <phhuang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220407095858.46807-4-pkshih@realtek.com

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/net/wireless/realtek/rtw88/main.h b/drivers/net/wireless/realtek/rtw88/main.h
index f694a2d86e0b..2743074a4256 100644
--- a/drivers/net/wireless/realtek/rtw88/main.h
+++ b/drivers/net/wireless/realtek/rtw88/main.h
@@ -580,6 +580,7 @@ struct rtw_tx_pkt_info {
 	u32 tx_pkt_size;
 	u8 offset;
 	u8 pkt_offset;
+	u8 tim_offset;
 	u8 mac_id;
 	u8 rate_id;
 	u8 rate;
@@ -2131,6 +2132,7 @@ static inline int rtw_chip_dump_fw_crash(struct rtw_dev *rtwdev)
 }
 
 void rtw_set_rx_freq_band(struct rtw_rx_pkt_stat *pkt_stat, u8 channel);
+void rtw_set_dtim_period(struct rtw_dev *rtwdev, int dtim_period);
 void rtw_get_channel_params(struct cfg80211_chan_def *chandef,
 			    struct rtw_channel_params *ch_param);
 bool check_hw_ready(struct rtw_dev *rtwdev, u32 addr, u32 mask, u32 target);