Hari Chandrakanthan <quic_haric@xxxxxxxxxxx> wrote: > In ath11k AP, the TSF timestamp mod the beacon interval does not vary > and is close to 0. > It is expected to be around 384us for 2 GHz and 54us for 5 GHz/6 GHz. > > The value of the TSF timer at TBTT is a multiple of the beacon interval, > while the value of the TSF timestamp in the beacon accounts for medium access > delay and physical implementation-specific delays through the PHY, > which could cause the value of the TSF timestamp mod the beacon interval > to vary. > > An AP sending a beacon frame shall set the value of the beacon frame’s > timestamp so that it equals the value of the STA’s TSF timer at the > time that the data symbol containing the first bit of the timestamp > is transmitted to the PHY plus the transmitting STA’s delays through > its local PHY from the MAC-PHY interface to its interface with the WM. > > In ath11k the physical implementation-specific delays were not accounted > for TSF timer and it resulted in incorrent TSF timer values. > > Add the physical implementation-specific delays in the TSF of beacon > template and probe response, so that the TSF holds proper values in the > beacon and probe response. > > tx delay for 5 GHz/6 GHz: > 20(lsig)+2(service)+32(6mbps, 24 bytes) = 54us + 2us(MAC/BB DELAY) > tx delay for 2.4 GHz: > 144 us (LPREAMBLE) + 48 (PLCP Header) + 192 (1Mbps, 24 bytes) > = 384 us + 2us(MAC/BB DELAY) > > Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-00192-QCAHKSWPL_SILICONZ-1 > > Signed-off-by: Hari Chandrakanthan <quic_haric@xxxxxxxxxxx> Dropping this, please rebase if still needed. error: patch failed: drivers/net/wireless/ath/ath11k/core.h:365 error: drivers/net/wireless/ath/ath11k/core.h: patch does not apply error: patch failed: drivers/net/wireless/ath/ath11k/mac.c:1437 error: drivers/net/wireless/ath/ath11k/mac.c: patch does not apply error: patch failed: drivers/net/wireless/ath/ath11k/wmi.c:8627 error: drivers/net/wireless/ath/ath11k/wmi.c: patch does not apply stg import: Diff does not apply cleanly Patch set to Changes Requested. -- https://patchwork.kernel.org/project/linux-wireless/patch/1686636183-1026-1-git-send-email-quic_haric@xxxxxxxxxxx/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
