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5530c04c87
PMSR (a.k.a. peer measurement) is generalized measurement between two Wi-Fi devices. And currently FTM (a.k.a. fine time measurement or flight time measurement) is the one and only measurement. FTM is measured by RTT (a.k.a. round trip time) of packets between two Wi-Fi devices. Add necessary functionalities for mac80211_hwsim to start PMSR request by passthrough the request to wmediumd via virtio. mac80211_hwsim can't measure RTT for real because mac80211_hwsim the software simulator and packets are sent almost immediately for real. This change expect wmediumd to have all the location information of devices, so passthrough requests to wmediumd. In detail, add new mac80211_hwsim command HWSIM_CMD_ABORT_PMSR. When mac80211_hwsim receives the PMSR start request via ieee80211_ops.start_pmsr, the received cfg80211_pmsr_request is resent to the wmediumd with command HWSIM_CMD_START_PMSR and attribute HWSIM_ATTR_PMSR_REQUEST. The attribute is formatted as the same way as nl80211_pmsr_start() expects. Signed-off-by: Jaewan Kim <jaewan@google.com> Link: https://lore.kernel.org/r/20230322131637.2633968-4-jaewan@google.com Signed-off-by: Johannes Berg <johannes.berg@intel.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 Restructured Text 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.