> I suggest adding
> #define IEEE80211_RADIOTAP_F_NOACK	0x40
> so an application can define that it is not interested in
> an ACK for the frame and the card should not bother retrying until
> it received one.
> When this flag is not set, the standard rules apply.
> 
> I don't see a use-case for overriding these rules to always
> _expect_ an ACK, so I think a one-bit flag is OK.

I'd add it to the TX flags instead, especially seeing that the bit 0x40
is already assigned there in some BSDs.

johannes