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[PATCH] wifi: mac80211: fix decap offload for stations on AP_VLAN interfaces

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Since AP_VLAN interfaces are not passed to the driver, check offload_flags
on the bss vif instead.

Reported-by: Howard Hsu <howard-yh.hsu@xxxxxxxxxxxx>
Fixes: 80a915ec4427 ("mac80211: add rx decapsulation offload support")
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
---
 net/mac80211/rx.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 45d7e71661e3..9b21e7725de2 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -4340,6 +4340,7 @@ void ieee80211_check_fast_rx(struct sta_info *sta)
 		.vif_type = sdata->vif.type,
 		.control_port_protocol = sdata->control_port_protocol,
 	}, *old, *new = NULL;
+	u32 offload_flags;
 	bool set_offload = false;
 	bool assign = false;
 	bool offload;
@@ -4455,10 +4456,10 @@ void ieee80211_check_fast_rx(struct sta_info *sta)
 	if (assign)
 		new = kmemdup(&fastrx, sizeof(fastrx), GFP_KERNEL);
 
-	offload = assign &&
-		  (sdata->vif.offload_flags & IEEE80211_OFFLOAD_DECAP_ENABLED);
+	offload_flags = get_bss_sdata(sdata)->vif.offload_flags;
+	offload = offload_flags & IEEE80211_OFFLOAD_DECAP_ENABLED;
 
-	if (offload)
+	if (assign && offload)
 		set_offload = !test_and_set_sta_flag(sta, WLAN_STA_DECAP_OFFLOAD);
 	else
 		set_offload = test_and_clear_sta_flag(sta, WLAN_STA_DECAP_OFFLOAD);
-- 
2.36.1




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