mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 01:59:02 +00:00
77024a9d95
Backport most significant upstream fixes (excl. hwsim fixes) Refreshed all patches. Contains important fixes for CSA (Channel Switch Announcement) and A-MSDU frames. Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
97 lines
3.0 KiB
Diff
97 lines
3.0 KiB
Diff
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;
|
|
}
|
|
|