FROMLIST: wifi: ath12k: allow peer_id 0 in dp peer lookup

[zhuhangtian]

For some chipsets, firmware can report HTT_T2H_MSG_TYPE_PEER_MAP2 with peer_id 0 as a valid value for mapping ath12k_dp_link_peer to ath12k_dp_peer.

ath12k_dp_peer_find_by_peerid() currently treats peer_id 0 as invalid. When firmware assigns peer_id 0, peer lookup fails. As a result, DHCP OFFER packets are dropped in __ieee80211_rx_handle_packet() because pubsta is NULL.

ath12k_dp_rx_deliver_msdu() <- rx_info->peer_id 0
ath12k_dp_peer_find_by_peerid -> peer NULL
ieee80211_rx_napi <- pubsta NULL
ieee80211_rx_list
__ieee80211_rx_handle_packet <- pubsta NULL, skb undelivered

The following error in the TX completion path is caused by the same issue:

ath12k_wifi7_pci 0000:04:00.0: dp_tx: failed to find the peer with peer_id 0

The error message is triggered by:
ath12k_wifi7_dp_tx_complete_msdu
ath12k_dp_link_peer_find_by_peerid <- ts->peer_id 0
ath12k_dp_peer_find_by_peerid -> peer NULL

ath12k_dp_tx_htt_tx_complete_buf
ath12k_dp_link_peer_find_by_peerid <- peer_id 0
ath12k_dp_peer_find_by_peerid -> peer NULL

Fix this by allowing peer_id 0 in ath12k_dp_peer_find_by_peerid() and rejecting only values >= ATH12K_DP_PEER_ID_INVALID.

Also update peer_id 0 handling in monitor path:
Always call ath12k_dp_link_peer_find_by_peerid() in ath12k_dp_rx_h_find_link_peer() to fetch the peer, including when peer_id is 0.
Always store peer_id in ppdu_info->peer_id in
ath12k_wifi7_dp_mon_rx_parse_status_tlv(), including peer_id 0.

Tested-on: QCC2072 hw1.0 PCI WLAN.COL.1.0.c2-00074-QCACOLSWPL_V1_TO_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c7-00108-QCAHMTSWPL_V1.0_V2.0_SILICONZ_UPSTREAM-3
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.6-01243-QCAHKSWPL_SILICONZ-1

Link: https://lore.kernel.org/all/20260512025732.1297849-1-hangtian.zhu@oss.qualcomm.com/
CRs-Fixed: 4476943

[qswat-orbit-external]

Merge Check Failed: No CR Numbers Found

Error: No Change Request numbers were found.

Please add Change Request numbers to your pull request description in the format CRs-Fixed: 12345 or link GitHub issues that are associated with Change Requests.

[qswat-orbit-external]

Merge Check Failed: No Change Task Found

No associated change tasks found for CR 4476943 on any of the following entities:

Entities:

• kernel.qli.2.0

CR: 4476943

Please ensure the CR has a change task associated with at least one of the entities for this branch.

[qcomlnxci]

Test jobs on c4eee6a

• Job 95508 on glymur-crd
• Job 95509 on kaanapali-mtp
• Job 95511 on lemans-evk
• Job 95504 on monaco-evk
• Job 95512 on qcs615-ride
• Job 95507 on qcs6490-rb3gen2
• Job 95502 on qcs8300-ride
• Job 95506 on qcs9100-ride-r3
• Job 95503 on sm8750-mtp
• Job 95505 on x1e80100-crd

[qcomlnxci]

Test Matrix

Test Case	glymur-crd	kaanapali-mtp	lemans-evk	monaco-evk	qcs615-ride	qcs6490-rb3gen2	qcs8300-ride	qcs9100-ride-r3	sm8750-mtp	x1e80100-crd
0_qcom-next-ci-premerge-tests	◻️	◻️	❌ Fail	◻️	❌ Fail	❌ Fail	◻️	❌ Fail	◻️	◻️
BT_FW_KMD_Service	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
BT_ON_OFF	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
BT_SCAN	◻️	◻️	✅ Pass	❌ Fail	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
CPUFreq_Validation	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
CPU_affinity	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
DSP_AudioPD	◻️	◻️	✅ Pass	✅ Pass	⚠️ skip	✅ Pass	◻️	⚠️ skip	◻️	◻️
Ethernet	◻️	◻️	⚠️ skip	✅ Pass	⚠️ skip	⚠️ skip	◻️	⚠️ skip	◻️	◻️
Freq_Scaling	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
GIC	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
IPA	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
Interrupts	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
OpenCV	◻️	◻️	✅ Pass	⚠️ skip	◻️	✅ Pass	◻️	✅ Pass	◻️	◻️
PCIe	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
Probe_Failure_Check	◻️	◻️	❌ Fail	❌ Fail	❌ Fail	❌ Fail	◻️	❌ Fail	◻️	◻️
RMNET	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
UFS_Validation	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
USBHost	◻️	◻️	❌ Fail	✅ Pass	❌ Fail	❌ Fail	◻️	❌ Fail	◻️	◻️
WiFi_Firmware_Driver	◻️	◻️	❌ Fail	⚠️ skip	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
WiFi_OnOff	◻️	◻️	✅ Pass	❌ Fail	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
adsp_remoteproc	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	❌ Fail	◻️	◻️
cdsp_remoteproc	◻️	◻️	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	❌ Fail	◻️	◻️
gpdsp_remoteproc	◻️	◻️	✅ Pass	✅ Pass	⚠️ skip	⚠️ skip	◻️	❌ Fail	◻️	◻️
hotplug	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
irq	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
kaslr	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
pinctrl	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
qcom_hwrng	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
remoteproc	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	❌ Fail	◻️	◻️
rngtest	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
shmbridge	◻️	◻️	❌ Fail	✅ Pass	❌ Fail	❌ Fail	◻️	❌ Fail	◻️	◻️
smmu	◻️	◻️	❌ Fail	✅ Pass	❌ Fail	✅ Pass	◻️	❌ Fail	◻️	◻️
watchdog	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
wpss_remoteproc	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️

[qcomlnxci]

Test Matrix

Test Case	glymur-crd	kaanapali-mtp	lemans-evk	monaco-evk	qcs615-ride	qcs6490-rb3gen2	qcs8300-ride	qcs9100-ride-r3	sm8750-mtp	x1e80100-crd
0_qcom-next-ci-premerge-tests	◻️	◻️	❌ Fail	◻️	❌ Fail	❌ Fail	◻️	❌ Fail	◻️	◻️
BT_FW_KMD_Service	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
BT_ON_OFF	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
BT_SCAN	◻️	◻️	✅ Pass	❌ Fail	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
CPUFreq_Validation	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
CPU_affinity	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
DSP_AudioPD	◻️	◻️	✅ Pass	✅ Pass	⚠️ skip	✅ Pass	◻️	⚠️ skip	◻️	◻️
Ethernet	◻️	◻️	⚠️ skip	✅ Pass	⚠️ skip	⚠️ skip	◻️	⚠️ skip	◻️	◻️
Freq_Scaling	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
GIC	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
IPA	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
Interrupts	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
OpenCV	◻️	◻️	✅ Pass	⚠️ skip	◻️	✅ Pass	◻️	✅ Pass	◻️	◻️
PCIe	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
Probe_Failure_Check	◻️	◻️	❌ Fail	❌ Fail	❌ Fail	❌ Fail	◻️	❌ Fail	◻️	◻️
RMNET	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
UFS_Validation	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
USBHost	◻️	◻️	❌ Fail	✅ Pass	❌ Fail	❌ Fail	◻️	❌ Fail	◻️	◻️
WiFi_Firmware_Driver	◻️	◻️	❌ Fail	⚠️ skip	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
WiFi_OnOff	◻️	◻️	✅ Pass	❌ Fail	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
adsp_remoteproc	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	❌ Fail	◻️	◻️
cdsp_remoteproc	◻️	◻️	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	❌ Fail	◻️	◻️
gpdsp_remoteproc	◻️	◻️	✅ Pass	✅ Pass	⚠️ skip	⚠️ skip	◻️	❌ Fail	◻️	◻️
hotplug	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
irq	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
kaslr	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
pinctrl	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
qcom_hwrng	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
remoteproc	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	❌ Fail	◻️	◻️
rngtest	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
shmbridge	◻️	◻️	❌ Fail	✅ Pass	❌ Fail	❌ Fail	◻️	❌ Fail	◻️	◻️
smmu	◻️	◻️	❌ Fail	✅ Pass	❌ Fail	✅ Pass	◻️	❌ Fail	◻️	◻️
watchdog	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️
wpss_remoteproc	◻️	◻️	✅ Pass	✅ Pass	✅ Pass	✅ Pass	◻️	✅ Pass	◻️	◻️

[qcomlnxci]

Test jobs on c4eee6a

• Job 95508 on glymur-crd
• Job 95509 on kaanapali-mtp
• Job 95511 on lemans-evk
• Job 95504 on monaco-evk
• Job 95512 on qcs615-ride
• Job 95507 on qcs6490-rb3gen2
• Job 96442 on qcs8300-ride
• Job 95506 on qcs9100-ride-r3
• Job 95503 on sm8750-mtp
• Job 95505 on x1e80100-crd