configs/6.13: enable CONFIG_MAC80211_HWSIM#56
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cfg80211/mac80211 are already =y, but no real radio driver can load under emulation (vendor Wi-Fi modules are built for a different kernel). Building in the virtual radio provides a real phy with full nl80211 so wifi-detect/hostapd/netifd can bring up wlan* with no RF hardware — useful for validating a rehosted target's Wi-Fi bring-up chain. (.inc files run through the C preprocessor, so the note above the option uses // comments, not #.)
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What
Enables
CONFIG_MAC80211_HWSIMin the shared 6.13 config (configs/6.13/all-common.inc).Why
cfg80211/mac80211are already=y, but under emulation no real radio driver can load (vendor Wi-Fi modules are built for a different kernel), so there is no phy andwifidetection finds nothing. Building in the virtual radio gives a real phy with full nl80211, sowifi-detect/hostapd/netifdcan bring upwlan*with no RF hardware. This is useful for validating a rehosted target's Wi-Fi bring-up chain end to end.Notes
CONFIG_MAC80211.--config-onlylints cleanly for mipsel (deps satisfied); the option lands in the resulting linted defconfig..incfiles are run through the C preprocessor, so the explanatory comment uses//(a#line is parsed as a preprocessor directive and errors).