From: Johannes Berg <johannes.berg@xxxxxxxxx>
If MLO is enabled by the driver then validate a set of
capabilities that mac80211 will initially not support
in MLO. This might change if features are implemented.
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
net/mac80211/main.c | 42 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 6165b90bf0e2..c5553d68d779 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -951,6 +951,48 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
(!local->ops->start_nan || !local->ops->stop_nan)))
return -EINVAL;
+ if (hw->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO) {
+ /*
+ * For drivers capable of doing MLO, assume modern driver
+ * or firmware facilities, so software doesn't have to do
+ * as much, e.g. monitoring beacons would be hard if we
+ * might not even know which link is active at which time.
+ */
+ if (WARN_ON(!local->use_chanctx))
+ return -EINVAL;
+
+ if (WARN_ON(!local->ops->link_info_changed))
+ return -EINVAL;
+
+ if (WARN_ON(!ieee80211_hw_check(hw, HAS_RATE_CONTROL)))
+ return -EINVAL;
+
+ if (WARN_ON(!ieee80211_hw_check(hw, AMPDU_AGGREGATION)))
+ return -EINVAL;
+
+ if (WARN_ON(ieee80211_hw_check(hw, HOST_BROADCAST_PS_BUFFERING)))
+ return -EINVAL;
+
+ if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_PS) &&
+ !ieee80211_hw_check(hw, SUPPORTS_DYNAMIC_PS)))
+ return -EINVAL;
+
+ if (WARN_ON(!ieee80211_hw_check(hw, MFP_CAPABLE)))
+ return -EINVAL;
+
+ if (WARN_ON(!ieee80211_hw_check(hw, CONNECTION_MONITOR)))
+ return -EINVAL;
+
+ if (WARN_ON(ieee80211_hw_check(hw, NEED_DTIM_BEFORE_ASSOC)))
+ return -EINVAL;
+
+ if (WARN_ON(ieee80211_hw_check(hw, TIMING_BEACON_ONLY)))
+ return -EINVAL;
+
+ if (WARN_ON(!ieee80211_hw_check(hw, AP_LINK_PS)))
+ return -EINVAL;
+ }
+
#ifdef CONFIG_PM
if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
return -EINVAL;
--
2.36.1
