On February 8, 2024 3:15:25 PM Johannes Berg <johannes@xxxxxxxxxxxxxxxx> wrote:
On Thu, 2024-02-08 at 15:06 +0100, Arend van Spriel wrote:settings->hidden_ssid has already been used above in following call: err = brcmf_fil_iovar_int_set(ifp, "closednet", settings->hidden_ssid); So we pass the value as is to firmware using the same assumption, ie. NL80211_HIDDEN_SSID_NOT_IN_USE. Is this not ABI thus very unlikely to change?The ABI won't change, that'd break all the users of nl80211 that use this :-)
Right. So basically the assumption that NL80211_HIDDEN_SSID_NOT_IN_USE is and will be zero is a safe one.
@Johannes: Actually not quite understanding the reason for having this setting in nl80211. hidden_ssid means SSID element length is zero, right?Well, there at least _were_ APs doing the correct SSID length but setting all octets to zero ... Not sure that's still a thing though.
I now looked at the definition and see indeed two distinct flavours of "hidden SSID". Interesting although I have never considered it a useful feature.
Regards, Arend
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