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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-cbb8f1c4c3asm53298a12.31.2026.07.21.12.40.11 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 21 Jul 2026 12:40:12 -0700 (PDT) Message-ID: Date: Wed, 22 Jul 2026 03:40:09 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH RFC] Bluetooth: Add generic support for vendor HCI frames To: Luiz Augusto von Dentz Cc: Marcel Holtmann , Zijun Hu , linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260719-support_vendor_hci-v1-1-764523a4ca3d@oss.qualcomm.com> <0c5a924f-7382-407b-a0f4-dfd7dfe0d5e6@oss.qualcomm.com> Content-Language: en-US From: Zijun Hu In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: sGYAStOEb9_lZkXaV8i8O-g64GKhdGr7 X-Proofpoint-ORIG-GUID: sGYAStOEb9_lZkXaV8i8O-g64GKhdGr7 X-Authority-Analysis: v=2.4 cv=XaG5Co55 c=1 sm=1 tr=0 ts=6a5fcb1e cx=c_pps a=MTSHoo12Qbhz2p7MsH1ifg==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=ZCvCaZH92ShBOWEjDq8A:9 a=QEXdDO2ut3YA:10 a=GvdueXVYPmCkWapjIL-Q:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzIxMDIwNCBTYWx0ZWRfX4eot2awiOX5W mRtmaryv6vtuwQtvQqh7BJfysBfnEQxwZjLm3KxVzaU69bp+PmTKdV8eyWV8TkLW6MeHN+zmyK8 3RfNLHlk7NmNddMD+K4X4aX6/escdZUCYFa2HONK7z3SuIysTvoV54KhAL4UIlAivA9gd1tE6vV HN0WnAm4Q7ccbkmKr7MGfmNgAyzhWxLU6j9dfsnptvHNvS25V6pAHcHsnNTCaTMdjFlm0rKASOy jVKg7YKaw9a3MuinxLhkh/h5ouO9YJ+ZPIWC2xN9TO9Xf4G1Ijq58xvJ4hUA+64FOuXLnHsPHE5 y5k+piY+rq7/osLi87dnkjbB8hwDEZ4VftsS7ts3Mm54SHkyQNK9r6bKt6Ul2qlPVneCORazkrH XRwVB3DPQ19JL7i84vixM1SqlPd5PoU0ybN7UqVhfaWkA+ui6CBwMM3ARN0ANqak+ero48n0xnc l9RsxisveiHRXRbqgbA== X-Proofpoint-Spam-Info: AW1haW4tMjYwNzIxMDIwNCBTYWx0ZWRfX3GCdpDJwxKS/ P3KApq76uoOQvu1rQY+P8iKzmUJ5ez4A+SHIHDVxw8JQwMNXSTxuOQ2i2rpjed0TWOzoyI0JK4e Xs2pEthEPYqJwKFvYWqpE5w0kOFyr/s= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-21_03,2026-07-21_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 priorityscore=1501 spamscore=0 lowpriorityscore=0 suspectscore=0 bulkscore=0 impostorscore=0 clxscore=1015 malwarescore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607210204 On 7/21/2026 10:22 PM, Luiz Augusto von Dentz wrote: >> Could you please give me a clear direction >> Solution A or is_vendor()? > There might be a simpler approach, just consider anything other then > the known packets a vendor packet, so it is automatically stamped with > HCI_VENDOR_PKT then push it back to driver from processing. For this simpler approach: in TX, userspace send data to kernel by 0x31[inidicator] .... in RX, how does kernel send data to userspace by 0xff, 0x34(indicator).... OR 0x34(indicator) without 0xff ?