ieee80211_generic_frame_duration — Calculate the duration field for a frame
__le16 ieee80211_generic_frame_duration
(struct ieee80211_hw * hw, struct ieee80211_vif * vif, size_t frame_len, struct ieee80211_rate * rate);
pointer obtained from ieee80211_alloc_hw.
struct ieee80211_vif pointer from struct ieee80211_if_init_conf.
the length of the frame.
the rate at which the frame is going to be transmitted.
Calculate the duration field of some generic frame, given its length and transmission rate (in 100kbps).