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authorFelix Fietkau <nbd@nbd.name>2017-01-13 11:28:25 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-07-05 14:40:25 +0200
commit6baa8c92dab9a43f0b363f1b7d7bd269d5efcf8d (patch)
tree0e845652f1efefcc21ee8ffeddd5cd1371658c65 /net/mac80211
parent8eaaf66d41adf7b9b31486f03d93de3a1013e28d (diff)
mac80211: initialize SMPS field in HT capabilities
[ Upstream commit 43071d8fb3b7f589d72663c496a6880fb097533c ] ibss and mesh modes copy the ht capabilites from the band without overriding the SMPS state. Unfortunately the default value 0 for the SMPS field means static SMPS instead of disabled. This results in HT ibss and mesh setups using only single-stream rates, even though SMPS is not supposed to be active. Initialize SMPS to disabled for all bands on ieee80211_hw_register to ensure that the value is sane where it is not overriden with the real SMPS state. Reported-by: Elektra Wagenrad <onelektra@gmx.net> Signed-off-by: Felix Fietkau <nbd@nbd.name> [move VHT TODO comment to a better place] Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/main.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 1075ac24c8c5..2bb6899854d4 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -908,12 +908,17 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
supp_ht = supp_ht || sband->ht_cap.ht_supported;
supp_vht = supp_vht || sband->vht_cap.vht_supported;
- if (sband->ht_cap.ht_supported)
- local->rx_chains =
- max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
- local->rx_chains);
+ if (!sband->ht_cap.ht_supported)
+ continue;
/* TODO: consider VHT for RX chains, hopefully it's the same */
+ local->rx_chains =
+ max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
+ local->rx_chains);
+
+ /* no need to mask, SM_PS_DISABLED has all bits set */
+ sband->ht_cap.cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
+ IEEE80211_HT_CAP_SM_PS_SHIFT;
}
/* if low-level driver supports AP, we also support VLAN */