ALL! I have two question to find answers here! Your reply will be very appreciated!

         If I want set the length threshold for rts mechanism, I shoud set ic->ic_rtsthreshold to the value I want. Am I right? If not ,can you tell me how to make it .

what is the difference between setting ic->ic_protmode = IEEE80211_PROT_CTSONLY and setting ic->ic_protmode = IEEE80211_PROT_RTSCTS.

As the standard 802.11, there is no mode called CTSONLY, so what it is for?

Thanks for your reply!