6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Oldřich Jedlička <oldium.pro@xxxxxxxxx> [ Upstream commit 3e3a2b645c043f7e3e488d5011478cefb69bbe8b ] This fixes WARN_ONs when using AP_VLANs after station removal. The flush call passed AP_VLAN vif to driver, but because these vifs are virtual and not registered with drivers, we need to translate to the correct AP vif first. Closes: https://github.com/openwrt/openwrt/issues/12420 Fixes: 0b75a1b1e42e ("wifi: mac80211: flush queues on STA removal") Fixes: d00800a289c9 ("wifi: mac80211: add flush_sta method") Tested-by: Konstantin Demin <rockdrilla@xxxxxxxxx> Tested-by: Koen Vandeputte <koen.vandeputte@xxxxxxxxxxxx> Signed-off-by: Oldřich Jedlička <oldium.pro@xxxxxxxxx> Link: https://lore.kernel.org/r/20231104141333.3710-1-oldium.pro@xxxxxxxxx Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- net/mac80211/driver-ops.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h index c4505593ba7a6..2bc2fbe58f944 100644 --- a/net/mac80211/driver-ops.h +++ b/net/mac80211/driver-ops.h @@ -23,7 +23,7 @@ static inline struct ieee80211_sub_if_data * get_bss_sdata(struct ieee80211_sub_if_data *sdata) { - if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) + if (sdata && sdata->vif.type == NL80211_IFTYPE_AP_VLAN) sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, u.ap); @@ -638,10 +638,13 @@ static inline void drv_flush(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata, u32 queues, bool drop) { - struct ieee80211_vif *vif = sdata ? &sdata->vif : NULL; + struct ieee80211_vif *vif; might_sleep(); + sdata = get_bss_sdata(sdata); + vif = sdata ? &sdata->vif : NULL; + if (sdata && !check_sdata_in_driver(sdata)) return; @@ -657,6 +660,8 @@ static inline void drv_flush_sta(struct ieee80211_local *local, { might_sleep(); + sdata = get_bss_sdata(sdata); + if (sdata && !check_sdata_in_driver(sdata)) return; -- 2.42.0
