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LinuxKPI: 802.11 ieee80211_sn_sub() fix

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In ieee80211_sn_sub() we need to shift the mask before applying it.
This fixes the logic from 978f25e840.

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
1 changed files with 2 additions and 1 deletions
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3
sys/compat/linuxkpi/common/include/net/mac80211.h
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@ -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