Could someone shed some light on the SO_WIFI_STATUS socket option - I encountered it in the hostapd nl80211 driver code. I could find it's declaration in the /usr/include/asm-generic/socket.h file but could not find any relevant documentation anywhere.
The explanation and patch: [RFC] net: add wireless TX status socket option
http://www.spinics.net/lists/netdev/msg176403.html
A sample application:
http://www.spinics.net/lists/netdev/msg176415.html
The references:
http://lxr.free-electrons.com/ident?i=SO_WIFI_STATUS
If you could not find it in your /usr/include/asm-generic/socket.h, it's because your kernel is too old. In mine:
jbm@sumo:~$ grep -n SO_WIFI_STATUS /usr/include/asm-generic/socket.h
68:#define SO_WIFI_STATUS 41
69:#define SCM_WIFI_STATUS SO_WIFI_STATUS
jbm@sumo:~$ uname -a
Linux sumo 4.3.0-1-amd64 #1 SMP Debian 4.3.3-7 (2016-01-19) x86_64 GNU/Linux