On 10/30/2025 10:01 AM, Yu Zhang(Yuriy) wrote:
> To enable/disable cfr feature use command,
>
> echo <val> > /sys/kernel/debug/ieee80211/phyX/ath11k/enable_cfr
>
> where, val: 0 to disable CFR and 1 to enable CFR.
>
> To enable CFR capture for associated peers,
>
> echo "<val> <bw> <periodicity> <method>"
> >
> /sys/kernel/debug/ieee80211/phyX/netdev\:wlanx/stations/<mac>/cfr_capture
>
> val: 0 - stop CFR capture
> 1 - start CFR capture
> bw: CFR capture bandwidth
> 0 - 20MHZ
> 1 - 40MHZ
> 2 - 80MHZ
> Periodicity: Periodicity at which hardware is expceted to collect CFR
> dump.
> 0 - single shot capture.
> non zero - for Periodic captures (value should be multiple of 10
> ms)
> method: Method used by hardware to collect the CFR dump.
> 0 - from the ACKs of QOS NULL packets.
>
> To enable CFR capture for unassociated clients,
>
> echo “<mac address> <val> <periodicity>”
> > /sys/kernel/debug/ieee80211/phyX/ath11k/cfr_unassoc
>
> Mac address: mac address of the client.
> Val: 0 - start CFR capture
> 1 – stop CFR capture
> Periodicity: Periodicity at which hardware is expceted to collect CFR
> dump.
> 0 - single shot capture.
> non zero - for Periodic captures (value should be multiple of 10
> ms)
>
> To collect the cfr dump,
> cat /sys/kernel/debug/ieee80211/phy0/ath11k/cfr_capture0 > /tmp/cfr.bin
>
> Previous link:
> https://lore.kernel.org/all/1645005922-7252-1-git-send-email-quic_vnaralas@quicinc.com/
>
> Signed-off-by: Yu Zhang(Yuriy) <yu.zhang@oss.qualcomm.com>
> ---
> Venkateswara Naralasetty (6):
> wifi: ath11k: Add initialization and deinitialization sequence for CFR
> module
> wifi: ath11k: Register debugfs for CFR configuration
> wifi: ath11k: Add support unassociated client CFR
> wifi: ath11k: Register relayfs entries for CFR dump
> wifi: ath11k: Register DBR event handler for CFR data
> wifi: ath11k: Register handler for CFR capture event
>
> drivers/net/wireless/ath/ath11k/Kconfig | 11 +
> drivers/net/wireless/ath/ath11k/Makefile | 1 +
> drivers/net/wireless/ath/ath11k/cfr.c | 991 ++++++++++++++++++
> drivers/net/wireless/ath/ath11k/cfr.h | 301 ++++++
> drivers/net/wireless/ath/ath11k/core.c | 41 +-
> drivers/net/wireless/ath/ath11k/core.h | 19 +-
> drivers/net/wireless/ath/ath11k/dbring.c | 50 +-
> drivers/net/wireless/ath/ath11k/dbring.h | 8 +-
> drivers/net/wireless/ath/ath11k/debug.h | 8 +-
> drivers/net/wireless/ath/ath11k/debugfs_sta.c | 143 ++-
> drivers/net/wireless/ath/ath11k/hal.c | 3 +-
> drivers/net/wireless/ath/ath11k/hw.h | 5 +-
> drivers/net/wireless/ath/ath11k/mac.c | 17 +-
> drivers/net/wireless/ath/ath11k/wmi.c | 147 ++-
> drivers/net/wireless/ath/ath11k/wmi.h | 97 +-
> 15 files changed, 1816 insertions(+), 26 deletions(-)
> create mode 100644 drivers/net/wireless/ath/ath11k/cfr.c
> create mode 100644 drivers/net/wireless/ath/ath11k/cfr.h
>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>