From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=79.135.106.30 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793241177; b=jwJve0yyLVd7/6MhjROU+TEdMsj+BmydYL6bJ5S4hY0Ax5TvQzMlYSwk4gYqeuHOHWjU aFBjc+kJJo5A0/wbkSA0F9Oyv1/nEkB6TiDwGzIKNkQ224TQUkvJXNi7lB8/HmMBeiU5O +83opvnn4NT/PLQrT8eYdLx9b+g5sa+q3CtJzeiY1saMUcmwrexlD/ocCdC6SZSf+3uCM MGNM/R0v69iqUhNGdSn+cV6q4GqacynDuGn/wdfOtb4euG0HrOftMJTJ9Q2Nbwp8mVcRL unZ/IQX4om3lTtw5GMTX4A/6G+cme05Z4lYRIr+tT7MDEchR5tdtd16y6vKpND/N5gQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793241177; h=DMARC-Filter:DKIM-Signature:Date:To:From:Cc:Subject:Message-ID: In-Reply-To:References:Feedback-ID:X-Pm-Message-ID:MIME-Version: Content-Type:Content-Transfer-Encoding; bh=5HAya7AXrvW9nuDMyU/T5LGM7V6HXtcY2BGF7KxiYmA=; b=boElgLt9BqoFlJjzgwo1K0wpubnhjCGV+NBUE7DbaRiiT722PBggUhPssmTOizoppGHK 0TmcFE6WFPiKcmiGLVpRCu3WdZniud+ibdkWBqmaNsdy9mElTZPKXHujPTcc+okUZXvNd 7EQbW9OwYslCFmoVaDnSkFzypVvzI9jqwsH/gBQfwhmOZH84OPWVbVqUXeiz4sBalDnUf A91jSMqxgmfH+YMst1MlRj+sOYTxKMOsZHonUe5A+/EvWVh1H4hv7NsbPlpBziaUkvw5S TPokmZFkb8kMBZeYijYr15c33+hrnj/h3OrHEAihZWAtA61ltvquWAA4Vs6Hm0dplHw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=proton.me; spf=pass smtp.mailfrom=proton.me; dkim=pass header.d=proton.me header.i=@proton.me header.a=rsa-sha256 header.s=protonmail2 header.b=AIb5uj4v; arc=none smtp.remote-ip=79.135.106.30 Received: from mail-10630.protonmail.ch (mail-10630.protonmail.ch [79.135.106.30]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A0960606A31A for ; Thu, 29 Oct 2026 02:32:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org A0960606A31A Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=proton.me Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=proton.me Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=proton.me header.i=@proton.me header.a=rsa-sha256 header.s=protonmail2 header.b=AIb5uj4v DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=proton.me; s=protonmail2; t=1793241171; x=1793500371; bh=5HAya7AXrvW9nuDMyU/T5LGM7V6HXtcY2BGF7KxiYmA=; h=Date:To:From:Cc:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID:BIMI-Selector; b=AIb5uj4vlwZR3NhO90Y28Cxnm8lT1hWVpiUmMdgYWn7QcwXQpIGWgcdUZPaGOTj8e 5BVE0UKK4keJnZU9sqCeBsQQe9I1qcdkNs23PyCm4j3w4C02kducuw08RtzD+th0cN Hhic35jHrw9uF02lIq71gTYEvLTb2KRXrylbklH+VqIJCuCodU5dqTcLvH/ewwWAgM 0q8JOFg9nBi+hCIDQ42DLXDWRqLbVKice7RtT0ppXLxbLSadIWAaVJnI9A5w5en7Id +tnJ+bDf20jl8xjrQlGezi+JV7DbmzWRF5VJ8FW5yISkvq+sRQQxxz/lfV5n0MutAI kBtMn6nTq4zsg== Date: Thu, 29 Oct 2026 02:32:46 +0000 To: linux-bluetooth@vger.kernel.org From: Kyle Pepper Cc: linux-kernel@vger.kernel.org, luiz.dentz@gmail.com, marcel@holtmann.org Subject: [RFC PATCH v3 0/1] Bluetooth: btusb: UB500 reported maximum data length Message-ID: <20261029023235.1280321-1-cochcoder@proton.me> In-Reply-To: <20261013032742.497402-1-cochcoder@proton.me> References: <20261013032742.497402-1-cochcoder@proton.me> Feedback-ID: 97716137:user:proton X-Pm-Message-ID: 86604828647744461e295fc629aa5efc46e70b8c X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi Luiz, LE Read Maximum Data Length reports TX/RX251, while LE Read Buffer Size reports 27/eight. A separate raw HCI test verified sixteen 251-byte packets received byte-for-byte intact and completed, with one packet outstanding at a time. RFC v3 replaces 167 with the reported maximum TX length, retaining eight LE credits. This establishes HCI251 acceptance, not physical pool capacity or an absolute HCI limit. Audio with the revised callback remains untested. Prepared with LLM assistance. Kyle Kyle Pepper (1): Bluetooth: btusb: test reported maximum LE length on TP-Link UB500 drivers/bluetooth/btusb_main.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) base-commit: 1081a6ef8f1e0661fd52eb3f878691b0b96cdff9 --=20 2.56.0