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When multiple radios are advertised as a single wiphy which supports various bands, a default scan request to mac80211 from cfg80211 will split the driver request based on band, so each request will have channels belonging to the same band. With this supported by default, the ath12k driver on receiving this request checks for one of the channels in the request and selects the corresponding radio(ar) on which the scan is going to be performed and creates a vdev on that radio. Note that on scan completion this vdev is not deleted. If a new scan request is seen on that same vif for a different band the vdev will be deleted and created on the new radio supporting the request. The vdev delete logic is refactored to have this done dynamically. The reason for not deleting the vdev on scan stop is to avoid repeated delete-create sequence if the scan is on the same band. Also, during channel assign, new vdev creation can be optimized as well. Also if the scan is requested when the vdev is in started state, no switching to new radio is allowed and scan on channels only within same radio is allowed. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1 Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3 Signed-off-by: Sriram R <quic_srirrama@quicinc.com> Co-developed-by: Rameshkumar Sundaram <quic_ramess@quicinc.com> Signed-off-by: Rameshkumar Sundaram <quic_ramess@quicinc.com> Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com> Link: https://msgid.link/20240405194519.1337906-6-quic_ramess@quicinc.com
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.