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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ee0f8d70d3sm11869985ad.60.2026.11.13.07.23.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 13 Nov 2026 07:23:08 -0800 (PST) Message-ID: <05d0e51a-7189-4095-8243-fdc1c424e37b@oss.qualcomm.com> Date: Fri, 13 Nov 2026 20:53:05 +0530 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 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH wireless-next v4 01/21] wifi: nl80211: define Seamless Mobility Domain (SMD) device capability To: Johannes Berg Cc: linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org References: <20261106-smd-v4-0-62e39487f51a@oss.qualcomm.com> <20261106-smd-v4-1-62e39487f51a@oss.qualcomm.com> <7638714d73cda9a2538952f577be1a236ddee55f.camel@sipsolutions.net> <24917e113f203e6f6606dc5adefeefc4ebc27d9c.camel@sipsolutions.net> Content-Language: en-US From: Pooventhiran G In-Reply-To: <24917e113f203e6f6606dc5adefeefc4ebc27d9c.camel@sipsolutions.net> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=DNgacCNb c=1 sm=1 tr=0 ts=6af72b5e cx=c_pps a=MTSHoo12Qbhz2p7MsH1ifg==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=IkcTkHD0fZMA:10 a=zJRp6_cAMcgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=C7ppcZlkJX4NIHrk3x4A:9 a=QEXdDO2ut3YA:10 a=GvdueXVYPmCkWapjIL-Q:22 X-Proofpoint-ORIG-GUID: 6omyzExUVFUndS5Hlku5L43f8uoTR7oy X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMTEzMDA2MSBTYWx0ZWRfX2O3fLxY3HUbH YVJ1n1o0ZiD5ZP+gyDZg6R+7UUzUyhJ7NDkrsX7MiFya1RudH7ULBT+eHmYf0McQNYL40CbaOdM /1DJrPRy3txczTpu3nOIHkNWbZ9WfMoyTouGqIswskp0gfBcFXILIpqGs8kxvQzhKUNkYIsxiux gv/3f9HicPes8+DkL+nip92DRl0kDrg3MYCq1RZoexWZO4Fc2+XBlSBuBYCwB8w8Z6HE5CYQ6BT 4yF3bFhrGJa6pxx/o9F6Is6hbNDAfATdgh/y+dh5EiI14uCtxMRYlhBbogPHsUQXt5B2qgERbTI ImQ9nnYUlGDOZzpxOb99fRSbToULyW4s0upan25O043IyUjPK59AkrBjcj+m0DWFnu20CtR1nIk E0X1HvnRC2LBVYixOzeGoi63vnr5aDuaw5VWkg06xkmz2Ye+V/YTDuENfrKIBdkOPBhNc6NaxHm HXMLHogQPpPrjLZruFQ== X-Proofpoint-Spam-Info: AW1haW4tMjYxMTEzMDA2MSBTYWx0ZWRfX5yJnLpLm7zsB 9q9BdxQtNyeTXXgX8KH33rf1FQZHE1r2EPfvA4KjGtSV+evtVEuhQ2AFqWPMh8rz3aaaNuJAZ7K b/pZ0wZobd4uypIY4iI0OZUYFYKovvE= X-Proofpoint-GUID: 6omyzExUVFUndS5Hlku5L43f8uoTR7oy X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-11-13_04,2026-11-11_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 malwarescore=0 suspectscore=0 lowpriorityscore=0 phishscore=0 impostorscore=0 priorityscore=1501 clxscore=1015 adultscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2611040001 definitions=main-2611130061 On 11/10/2026 07:56 pm, Johannes Berg wrote: > On Tue, 2026-11-10 at 15:15 +0100, Johannes Berg wrote: >>> + * @NL80211_ATTR_SMD_SUPPORT: Flag attribute to indicate SMD support. Used with >>> + * multiple commands to indicate appropriate SMD support (refer DOC). >> >> This (with the wiphy flag) is the wrong way to do this, we have extended >> flags that don't need the double enum value and pass through to >> userspace directly. I changed the EXT_FEATURE flag to WIPHY_FLAG based on the comments in v2 and NL80211_ATTR_MLO_SUPPORT implementation. I will change this back to EXT_FEATURE flag to indicate driver support. >> >> But also, this does absolutely _nothing_, the only thing you do with it >> is pass a completely ignored NL80211_ATTR_SMD_SUPPORT to START_AP ... >> it's not even passed to the driver. > > Actually it is, just ignored. I don't really see why we'd care at this > point though. > NL80211_ATTR_SMD_SUPPORT passed to ieee80211_start_ap is parsed into link_conf and (will be) read by the driver in assign_vif_chanctx drv-op. ath12k implementation needs this indication to instantiate vifs and workflows in both the driver and firmware. > johannes