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mac80211: fix WMM TXOP calculation 

In commit 9236c4523e5b ("mac80211: limit wmm params to comply
with ETSI requirements"), we have limited the WMM parameters to
comply with 802.11 and ETSI standard.  Mistakenly the TXOP value
was caluclated wrong.  Fix it by taking the minimum between
802.11 to ETSI to make sure we are not violating both.

Fixes: e552af0581 ("mac80211: limit wmm params to comply with ETSI requirements")
Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Dreyfuss, Haim 2018-08-31 11:31:04 +03:00 committed by Johannes Berg
parent 8442938c3a
commit abd76d255d
1 changed files with 1 additions and 2 deletions
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3
net/mac80211/util.c
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@ -1151,8 +1151,7 @@ void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
qparam->txop = !qparam->txop ? wmm_ac->cot / 32 :
min_t(u16, qparam->txop, wmm_ac->cot / 32);
qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
rcu_read_unlock();
}