LinuxKPI: 802.11 ieee80211_sn_sub() fix

In ieee80211_sn_sub() we need to shift the mask before applying it.
This fixes the logic from 978f25e840fe4975f243e6077a764842f0e9d3eb.

Reported by:	J.R. Oldroyd (fbsd opal.com)
MFC after:	3 days
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Bjoern A. Zeeb 2022-04-25 11:35:57 +00:00
parent 128b9bf96c
commit b3e7f403a5

View File

@ -1691,7 +1691,8 @@ static __inline uint16_t
ieee80211_sn_sub(uint16_t sa, uint16_t sb)
{
return ((sa - sb) & IEEE80211_SEQ_SEQ_MASK);
return ((sa - sb) &
(IEEE80211_SEQ_SEQ_MASK >> IEEE80211_SEQ_SEQ_SHIFT));
}
static __inline void