[PATCH ath-next v4 0/6] wifi: ath11k: Add single shot/periodic CFR capture support

[Qian Zhang]

On Fri, Dec 26, 2025 at 5:05 PM Baochen Qiang
<baochen.qiang at oss.qualcomm.com> wrote:
>
>
>
> On 12/23/2025 5:27 PM, Qian Zhang 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 at oss.qualcomm.com>
> > Signed-off-by: Qian Zhang <qian.zhang at oss.qualcomm.com>
> >
> > ---
> > Changes in v4:
> >  - Update patch 2/6
>
> Details of changes is needed! General description like 'update' here does not help
> understand the diff compared with your last revision.
>
> > Changes in v3:
> >  - Update related comments.
> > Changes in v2:
> >  - Update related comments.
> > ---
> >
> > Venkateswara Naralasetty (6):
>
> The author in each individual patch is 'Qian Zhang <qian.zhang at oss.qualcomm.com>', please
> check them.
>

Sure! Will refine them.


> >   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         | 1007 +++++++++++++++++
> >  drivers/net/wireless/ath/ath11k/cfr.h         |  302 +++++
> >  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 |  142 ++-
> >  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, 1832 insertions(+), 26 deletions(-)
> >  create mode 100644 drivers/net/wireless/ath/ath11k/cfr.c
> >  create mode 100644 drivers/net/wireless/ath/ath11k/cfr.h
> >
> >
> > base-commit: 25f833fff81de4fbb9b5382806860b63768567e8
>