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X-MS-Exchange-CrossPremises-SCL: 1 X-MS-Exchange-CrossPremises-Processed-By-Journaling: Journal Agent X-OrganizationHeadersPreserved: AS8P192MB1970.EURP192.PROD.OUTLOOK.COM X-Authority-Analysis: v=2.4 cv=ONKyTiaB c=1 sm=1 tr=0 ts=6aa1404f cx=c_pps a=zNMqk6dBDzYzXfNKB6ufmg==:117 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=z/mQ4Ysz8XfWz/Q5cLBRGdckG28=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=xqWC_Br6kY4A:10 a=kj9zAlcOel0A:10 a=VdqzKS8jKosA:10 a=8gLI3H-aZtYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=tr3XZvuDWTETL0Uaxejn:22 a=WQ4YJ39tjzx_Hbm9pN5v:22 a=VwQbUJbxAAAA:8 a=U02WUVaKTlNM7OgEJ00A:9 a=CjuIK1q_8ugA:10 X-Proofpoint-ORIG-GUID: GkfBih_R-sMnYqVm87sAFkxSEGA-aw42 X-Proofpoint-GUID: GkfBih_R-sMnYqVm87sAFkxSEGA-aw42 X-Proofpoint-Spam-Info: AW1haW4tMjYwOTA5MDEyNSBTYWx0ZWRfX3IejD9o3ySwk jlDNRwHKOetfYqZOfXdRShjBYgbcyBDDOa/QrAkhUSMz2ABHvGEu6zxALd9MRtfefGNXENkm3xY 12L6khoGYq9EzYg3nRoa6+qOTzulZYI= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTA5MDEyNSBTYWx0ZWRfXxfrkI6fnu6ZI AjB1WFHW4G+SwDpMtYHJ4klHcC6eI/m62btryN+m6RpF2dK609ckZtiX2aUAkG94aNrBwdOmV+Y reLYGw4OYg1C9RykZIOV/mHDU/W1nCQg23lPVJM0W0JyQ5bKtHaiIl37wF1KCYifCawIWyl0cm4 HHz0aEHcJM0d7HMZrQkVQnzGSJYi13amHmfzkLDvn6l/mTwb3Qak+p8LVDIRkQl0cJG4CvwOHdM x3nOgH0JRuyw/HSYRAopjHJvrmCbB0/s3I2dRH5WZOthPyRQ/pfqBEXjdjH8iMN3+GOZsTEeJF/ 42RCaMCQ5VVXUelIrwAdyuCiiuCK6K62N3vwm1XQwu5Xw8eLgsGb18J/vdHPY3vttcxk2ZQGU1q bcnpGorL7RDWWARq++ZOhgYOyna88vcUAlCzGxzLayPSXFcmSt95L0+AqL7VThQrSCoKDiRIegz bZcFfQe+gw7zf4E35CA== On 9/8/2026 9:59 PM, Vasanthakumar Thiagarajan wrote: > Worth trying with commit > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1e33f8acd837420160ea088160d8648a3db54c3b, > if it is not part of your image already. Thanks for the pointer. I backported 1e33f8acd837 ("wifi: ath12k: fix encrypted EAPOL TX in encap offload mode") onto my tree (backports-based, single-file dp_tx.c); it builds and loads cleanly. Unfortunately it does not fix the symptom I reported - the 4-way handshake still times out with reason 15 and hostapd still logs "did not Ack EAPOL-Key frame". Looking at the commit, I think it addresses a different EAPOL case than the one that fails here: - 1e33f8ac only re-routes EAPOL frames that carry ATH12K_SKB_CIPHER_SET, i.e. *encrypted* EAPOL. On an established link that is the GTK rekey (group-key handshake), which happens after the pairwise keys are already installed. - The frame that fails in my case is EAPOL msg 1/4 of the *initial* 4-way handshake. It is sent to a not-yet-authorized station before any key exists, so it is *unencrypted* and has no cipher set. It therefore still takes the unchanged is_diff_encap / TO_FW RAW exception path in ath12k_dp_tx() - exactly the path the 1.6 firmware appears to drop - so 1e33f8ac leaves it untouched. So the commit fixes the rekey EAPOL, but the initial handshake never gets that far. Test details unchanged from my original report: QCN9274 hw2.0, firmware WLAN.WBE.1.6-01243 (the latest published in linux-firmware ath12k/QCN9274/hw2.0), AP mode WPA2-PSK/WPA3-SAE. One thing I noticed: the commit's Tested-on tag is WLAN.WBE.1.6-01270, which is newer than anything currently in linux-firmware (01243 is the tip). Two questions: 1. Does 01270 also change the firmware handling of the unencrypted pre-authorization EAPOL on the encap-exception path (i.e. would it fix the initial 4-way handshake, not just rekey)? And is 01270 planned to be published to linux-firmware? I can't reproduce your test setup without it. 2. If the initial-handshake fix is expected to be driver-side, should ath12k also force the pre-authorization (unencrypted) EAPOL onto the native-WiFi path when ETH TX-encap offload is active - i.e. extend the handling to the is_diff_encap case, not only the cipher-set case? Happy to provide full hostapd -dd logs and tx-path traces, or to test a firmware/driver fix. Thanks, Michael Pfeifroth