[PATCH ath-next v5 00/11] wifi: ath12k: resolve RX link id via logical link id on WCN7850/QCC2072

[Rameshkumar Sundaram]

On 11/10/2026 12:10 PM, Baochen Qiang wrote:
> ath12k currently relies on hardware link id to resolve the link peer. This
> works for QCN9274, IPQ5332 and IPQ5424 but breaks WCN7850/QCC2072 which use
> logical link id instead. Commit a2fe9dc70f3b ("wifi: ath12k: Fix low MLO RX
> throughput on WCN7850") tries to fix it using peer_id but actually that fix
> doesn't work always. From user PoV, current code has datapath issues like
> EAPOL frames getting dropped on QCC2072, and finally MLO connection failes.
> 
> Add support for logical link id based link peer resolution to fix it.
> 
> ---
> Changes in v5:
> - rebased on ToT
> - collect tags given.
> - Link to v4: https://lore.kernel.org/r/20261102-ath12k-logical-link-id-v4-0-f4c7807c299b@oss.qualcomm.com
> 
> ---
> Baochen Qiang (11):
>        wifi: ath12k: fix potential OOB access due to unverified hardware link id
>        wifi: ath12k: skip hw link id match for devices without hw link id support
>        wifi: ath12k: rename ath12k_dp_peer::hw_links to link_id_map
>        wifi: ath12k: rename ath12k_dp_link_peer::hw_link_id to drv_link_id
>        wifi: ath12k: rename ath12k_skb_rxcb::hw_link_id to drv_link_id
>        wifi: ath12k: derive device id without drv_link_id for single device group
>        wifi: ath12k: add support for HTT_T2H_MSG_TYPE_PEER_EXTENDED event
>        wifi: ath12k: allocate logical link id on host when firmware does not report it
>        wifi: ath12k: derive REO RX drv_link_id per device via HAL ops
>        wifi: ath12k: derive WBM RX drv_link_id per device via HAL ops
>        wifi: ath12k: use link_id_map to resolve RX link id for all devices
> 
>   drivers/net/wireless/ath/ath12k/core.c             |   1 +
>   drivers/net/wireless/ath/ath12k/core.h             |   3 +-
>   drivers/net/wireless/ath/ath12k/dp.c               |  18 +++
>   drivers/net/wireless/ath/ath12k/dp.h               |   1 +
>   drivers/net/wireless/ath/ath12k/dp_cmn.h           |   3 +
>   drivers/net/wireless/ath/ath12k/dp_htt.c           |  17 +++
>   drivers/net/wireless/ath/ath12k/dp_htt.h           |  15 ++
>   drivers/net/wireless/ath/ath12k/dp_peer.c          | 170 +++++++++++++++++----
>   drivers/net/wireless/ath/ath12k/dp_peer.h          |  26 +++-
>   drivers/net/wireless/ath/ath12k/dp_rx.c            |   8 +-
>   drivers/net/wireless/ath/ath12k/dp_rx.h            |  16 +-
>   drivers/net/wireless/ath/ath12k/hal.h              |   6 +-
>   drivers/net/wireless/ath/ath12k/hw.h               |  22 +--
>   drivers/net/wireless/ath/ath12k/mac.c              |  53 ++++++-
>   drivers/net/wireless/ath/ath12k/wifi7/dp_rx.c      | 112 +++++++-------
>   drivers/net/wireless/ath/ath12k/wifi7/dp_rx.h      |   8 +-
>   .../net/wireless/ath/ath12k/wifi7/hal_qcc2072.c    |   8 +-
>   .../net/wireless/ath/ath12k/wifi7/hal_qcn9274.c    |  16 +-
>   .../net/wireless/ath/ath12k/wifi7/hal_qcn9274.h    |   1 -
>   .../net/wireless/ath/ath12k/wifi7/hal_wcn7850.c    |  17 ++-
>   .../net/wireless/ath/ath12k/wifi7/hal_wcn7850.h    |   6 +-
>   drivers/net/wireless/ath/ath12k/wifi7/hw.c         |  17 ++-
>   drivers/net/wireless/ath/ath12k/wmi.h              |   1 +
>   23 files changed, 403 insertions(+), 142 deletions(-)
> ---
> base-commit: e3485cc885b81314c814a43db2255b1f9100928f
> change-id: 20260728-ath12k-logical-link-id-aef2481822eb
> 

Reviewed-by: Rameshkumar Sundaram <rameshkumar.sundaram at oss.qualcomm.com>