4.18-stable review patch. If anyone has any objections, please let me know.
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From: "Dreyfuss, Haim" haim.dreyfuss@intel.com
[ Upstream commit abd76d255d69d70206c01b9cb19ba36a9c1df6a1 ]
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: e552af058148 ("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 Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/mac80211/util.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
--- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1151,8 +1151,7 @@ void ieee80211_regulatory_limit_wmm_para 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(); }