[PATCH ath-current v6 0/8] wifi: ath12k: support firmware-allocated MLD peer ID

[Baochen Qiang]

ath12k currently assumes the host allocates the MLD peer ID and passes
it down to firmware via WMI_PEER_ASSOC_CMDID. This works on QCN9274
but breaks WCN7850/QCC2072, whose firmware always picks the ID itself
and reports it back through HTT_T2H_MSG_TYPE_MLO_RX_PEER_MAP. As a
result dp_hw->dp_peers[] is never populated for MLO peers and the data
path lookup fails. On QCC2072 the firmware additionally crashes on MLO
disconnect when ATH12K_WMI_FLAG_MLO_PEER_ID_VALID was set in the peer
assoc command.

Add a host_alloc_ml_id hw_param to branch behavior, defer the
dp_peers[] publish to the HTT event for firmware-allocated chips, and
propagate the firmware-assigned ID through the existing host
bookkeeping when it arrives.

Patch summary:

1: fix for an out-of-bounds clear_bit() in
     ath12k_mac_dp_peer_cleanup().
  2: group peer assoc send-and-wait into a helper
  3: refactor, keep ATH12K_PEER_ML_ID_VALID set in ahsta->ml_peer_id
     so later patches do not have to OR or mask it at every call site;
  4: parse the HTT_T2H_MSG_TYPE_MLO_RX_PEER_MAP message;
  5: introduce hw_param host_alloc_ml_id, set true on QCN9274 family
     and false on WCN7850/QCC2072;
  6: on host_alloc_ml_id == false, leave peer_id_valid unset and send
     ml_peer_id == 0 in WMI_PEER_ASSOC_CMDID;
  7: on host_alloc_ml_id == false, mark ahsta->ml_peer_id and
     dp_peer->peer_id as ATH12K_MLO_PEER_ID_PENDING and skip the
     dp_hw->dp_peers[] publish until the firmware reports the ID;
  8: in the MLO_RX_PEER_MAP handler, propagate the firmware-assigned
     ID into dp_peer->peer_id, every dp_link_peer in
     dp_peer->link_peers[], and ahsta->ml_peer_id, all under
     dp_hw->peer_lock.

---
Baochen Qiang (8):
      wifi: ath12k: fix out-of-bounds clear_bit in ath12k_mac_dp_peer_cleanup()
      wifi: ath12k: factor out peer assoc send-and-wait into a helper
      wifi: ath12k: keep ATH12K_PEER_ML_ID_VALID set in ath12k_sta::ml_peer_id
      wifi: ath12k: add support for HTT_T2H_MSG_TYPE_MLO_RX_PEER_MAP
      wifi: ath12k: introduce host_alloc_ml_id hardware parameter
      wifi: ath12k: do not advertise MLD peer ID for firmware-allocate devices
      wifi: ath12k: defer dp_peer registration when firmware allocates MLD peer ID
      wifi: ath12k: resolve PENDING ML peer ID from MLO_PEER_MAP HTT event

 drivers/net/wireless/ath/ath12k/core.c     |   2 +
 drivers/net/wireless/ath/ath12k/core.h     |   3 +
 drivers/net/wireless/ath/ath12k/dp_htt.c   |  49 +++++++++
 drivers/net/wireless/ath/ath12k/dp_htt.h   |  12 +++
 drivers/net/wireless/ath/ath12k/dp_peer.c  |  75 +++++++++++--
 drivers/net/wireless/ath/ath12k/dp_peer.h  |   2 +
 drivers/net/wireless/ath/ath12k/hw.h       |   2 +
 drivers/net/wireless/ath/ath12k/mac.c      | 164 ++++++++++++++++++++---------
 drivers/net/wireless/ath/ath12k/peer.c     |  31 +++++-
 drivers/net/wireless/ath/ath12k/peer.h     |   1 +
 drivers/net/wireless/ath/ath12k/wifi7/hw.c |  12 +++
 11 files changed, 292 insertions(+), 61 deletions(-)
---
base-commit: 951dc0a744e4dc8490935316d3b76e23990bde3c
change-id: 20260527-ath12k-fw-allocated-ml-peer-id-2b456891157f

Best regards,
-- 
Baochen Qiang <baochen.qiang at oss.qualcomm.com>