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From: Felix Fietkau <nbd@nbd.name>
Date: Wed, 11 Jan 2017 23:30:20 +0100
Subject: [PATCH] mac80211: initialize SMPS field in HT capabilities
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>
---
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -908,10 +908,15 @@ int ieee80211_register_hw(struct ieee802
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;
+
+ local->rx_chains =
+ max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
+ local->rx_chains);
+
+ sband->ht_cap.cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
+ IEEE80211_HT_CAP_SM_PS_SHIFT;
/* TODO: consider VHT for RX chains, hopefully it's the same */
}
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