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[144.49.247.26]) by smtp-relay.gmail.com with ESMTPS id 6a1803df08f44-9081dcfa345sm1679876d6.17.2026.07.29.02.48.26 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 29 Jul 2026 02:48:27 -0700 (PDT) X-Relaying-Domain: broadcom.com X-CFilter-Loop: Reflected Received: by mail-qv1-f70.google.com with SMTP id 6a1803df08f44-8eec6acbe21so17231536d6.3 for ; Wed, 29 Jul 2026 02:48:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1785318505; x=1785923305; darn=vger.kernel.org; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:from:to:cc:subject:date:message-id:reply-to :content-type; bh=q+GPA/rLhc1S1DZlerpKKjvy5ROXqBkGhbeqa7Tzmk0=; b=UU+i96vKZD9wYydpxnhkptIh5W39Y/icdympbmwFX23fQOQPTVMfmfmiuCd5hSNAvN KX+VJMRmd+Kl7yuHPWcfvMkIKD2zi9ESXmgj3ggi4vMnhYDWQFZ+i/VxoHQMboGgDKg9 vuRu3CD3QFGs06QGqJH5ybOuPOI8rcd6SXZf0= X-Received: by 2002:a05:6214:29eb:b0:8fd:6e32:2bfb with SMTP id 6a1803df08f44-90817376d39mr59183306d6.60.1785318505542; Wed, 29 Jul 2026 02:48:25 -0700 (PDT) X-Received: by 2002:a05:6214:29eb:b0:8fd:6e32:2bfb with SMTP id 6a1803df08f44-90817376d39mr59183186d6.60.1785318505096; Wed, 29 Jul 2026 02:48:25 -0700 (PDT) Received: from [10.176.3.215] ([192.19.176.250]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-9081dc496f7sm20496196d6.3.2026.07.29.02.48.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 29 Jul 2026 02:48:24 -0700 (PDT) Message-ID: <5cf57b2d-2bcc-481c-87bf-3a034d5f99be@broadcom.com> Date: Wed, 29 Jul 2026 11:48:22 +0200 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] wifi: brcmfmac: configure SAE PWE method for external SAE AP To: Bogdan Nicolae Cc: linux-wireless@vger.kernel.org, brcm80211@lists.linux.dev, brcm80211-dev-list.pdl@broadcom.com, linux-kernel@vger.kernel.org References: <20260729053408.13715-1-bogdan.nicolae@gmail.com> Content-Language: en-US From: Arend van Spriel In-Reply-To: <20260729053408.13715-1-bogdan.nicolae@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e On 29/07/2026 07:34, Bogdan Nicolae wrote: > When bringing up a WPA3-SAE SoftAP with external (user space) SAE, the > driver never told the firmware which SAE Password Element (PWE) method to > accept. The firmware was observed to corrupt its heap over time due to > this omission, leading to firmware trap (data abort in heap allocator). > > Parse the beacon IEs on start_ap() and set the extsae_pwe iovar > accordingly: 2 when the RSNX IE advertises H2E, 1 when an H2E-only > membership selector is present, 0 otherwise. This matches the behaviour > of the upstream/vendor driver and only applies to SAE-capable APs when > external SAE is supported. This makes sense, but may I ask what device do you have? Suspect it is a Cypress/Infineon chip. I could not find the iovar in our (Broadcom bca) code base so I suspect it is vendor specific. Regards, Arend