diff options
Diffstat (limited to 'package/kernel/mac80211/patches/391-mac80211-Fix-station-bandwidth-setting-after-channel.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/391-mac80211-Fix-station-bandwidth-setting-after-channel.patch | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/391-mac80211-Fix-station-bandwidth-setting-after-channel.patch b/package/kernel/mac80211/patches/391-mac80211-Fix-station-bandwidth-setting-after-channel.patch new file mode 100644 index 0000000000..aa8db32e72 --- /dev/null +++ b/package/kernel/mac80211/patches/391-mac80211-Fix-station-bandwidth-setting-after-channel.patch @@ -0,0 +1,96 @@ +From: Ilan Peer <ilan.peer@intel.com> +Date: Fri, 31 Aug 2018 11:31:10 +0300 +Subject: [PATCH] mac80211: Fix station bandwidth setting after channel + switch + +When performing a channel switch flow for a managed interface, the +flow did not update the bandwidth of the AP station and the rate +scale algorithm. In case of a channel width downgrade, this would +result with the rate scale algorithm using a bandwidth that does not +match the interface channel configuration. + +Fix this by updating the AP station bandwidth and rate scaling algorithm +before the actual channel change in case of a bandwidth downgrade, or +after the actual channel change in case of a bandwidth upgrade. + +Signed-off-by: Ilan Peer <ilan.peer@intel.com> +Signed-off-by: Luca Coelho <luciano.coelho@intel.com> +Signed-off-by: Johannes Berg <johannes.berg@intel.com> +--- + +--- a/net/mac80211/mlme.c ++++ b/net/mac80211/mlme.c +@@ -975,6 +975,10 @@ static void ieee80211_chswitch_work(stru + */ + + if (sdata->reserved_chanctx) { ++ struct ieee80211_supported_band *sband = NULL; ++ struct sta_info *mgd_sta = NULL; ++ enum ieee80211_sta_rx_bandwidth bw = IEEE80211_STA_RX_BW_20; ++ + /* + * with multi-vif csa driver may call ieee80211_csa_finish() + * many times while waiting for other interfaces to use their +@@ -983,6 +987,48 @@ static void ieee80211_chswitch_work(stru + if (sdata->reserved_ready) + goto out; + ++ if (sdata->vif.bss_conf.chandef.width != ++ sdata->csa_chandef.width) { ++ /* ++ * For managed interface, we need to also update the AP ++ * station bandwidth and align the rate scale algorithm ++ * on the bandwidth change. Here we only consider the ++ * bandwidth of the new channel definition (as channel ++ * switch flow does not have the full HT/VHT/HE ++ * information), assuming that if additional changes are ++ * required they would be done as part of the processing ++ * of the next beacon from the AP. ++ */ ++ switch (sdata->csa_chandef.width) { ++ case NL80211_CHAN_WIDTH_20_NOHT: ++ case NL80211_CHAN_WIDTH_20: ++ default: ++ bw = IEEE80211_STA_RX_BW_20; ++ break; ++ case NL80211_CHAN_WIDTH_40: ++ bw = IEEE80211_STA_RX_BW_40; ++ break; ++ case NL80211_CHAN_WIDTH_80: ++ bw = IEEE80211_STA_RX_BW_80; ++ break; ++ case NL80211_CHAN_WIDTH_80P80: ++ case NL80211_CHAN_WIDTH_160: ++ bw = IEEE80211_STA_RX_BW_160; ++ break; ++ } ++ ++ mgd_sta = sta_info_get(sdata, ifmgd->bssid); ++ sband = ++ local->hw.wiphy->bands[sdata->csa_chandef.chan->band]; ++ } ++ ++ if (sdata->vif.bss_conf.chandef.width > ++ sdata->csa_chandef.width) { ++ mgd_sta->sta.bandwidth = bw; ++ rate_control_rate_update(local, sband, mgd_sta, ++ IEEE80211_RC_BW_CHANGED); ++ } ++ + ret = ieee80211_vif_use_reserved_context(sdata); + if (ret) { + sdata_info(sdata, +@@ -993,6 +1039,13 @@ static void ieee80211_chswitch_work(stru + goto out; + } + ++ if (sdata->vif.bss_conf.chandef.width < ++ sdata->csa_chandef.width) { ++ mgd_sta->sta.bandwidth = bw; ++ rate_control_rate_update(local, sband, mgd_sta, ++ IEEE80211_RC_BW_CHANGED); ++ } ++ + goto out; + } + |