Use mac80211_hwsim to simulate wireless (Wi-Fi) networking
Originally created by @anonym on #10335 (Redmine)
See: https://www.kernel.org/doc/readme/Documentation-networking-mac80211_hwsim-README
Also see the hostap test suite which we might fetch and use if it has a test that suite our needs. For instance, for our automated MAC spoofing tests we’d like to simulate a wireless NIC whose spoofed MAC address is rejected by the AP it connects to because of MAC address whitelisting).
See also the way @boyska did this on #18587 (comment 182312).