> > +static inline int ieee80211_stype(struct ieee80211_hdr *hdr, u16 stype)
> > +{
> > + return (hdr->frame_control & cpu_to_le16(stype)) != 0;
> > +}
>
> And that even seems implemented wrongly? stype is a 4-bit field, this
> doesn't make much sense to me.
Now, before you get any ideas, this code
- a4_included = (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
- (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
- if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
- fc & IEEE80211_STYPE_QOS_DATA) {
is still correct. You really want to read the frame type bit assignments
in 802.11-2007 :)
johannes
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