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wifi: wireless: deny wireless extensions on MLO-capable devices

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These are WiFi 7 devices that will be introduced into the market
in 2023, with new drivers. Wireless extensions haven't been in
real development since 2006. Since wireless has evolved a lot,
and continues to evolve significantly with Multi-Link Operation,
there's really no good way to still support wireless extensions
for devices that do MLO.

Stop supporting wireless extensions for new devices. We don't
consider this a regression since no such devices (apart from
hwsim) exist yet.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230118105152.45f85078a1e0.Ib9eabc2ec5bf6b0244e4d973e93baaa3d8c91bd8@changeid
This commit is contained in:
Johannes Berg 2023-01-18 10:51:53 +01:00 committed by Kalle Valo
parent dc09766c75
commit 4ca6902769
1 changed files with 4 additions and 0 deletions
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4
net/wireless/wext-core.c
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@ -662,6 +662,8 @@ struct iw_statistics *get_wireless_stats(struct net_device *dev)
dev->ieee80211_ptr->wiphy->wext &&
dev->ieee80211_ptr->wiphy->wext->get_wireless_stats) {
wireless_warn_cfg80211_wext();
if (dev->ieee80211_ptr->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO)
return NULL;
return dev->ieee80211_ptr->wiphy->wext->get_wireless_stats(dev);
}
#endif
@ -702,6 +704,8 @@ static iw_handler get_handler(struct net_device *dev, unsigned int cmd)
#ifdef CONFIG_CFG80211_WEXT
if (dev->ieee80211_ptr && dev->ieee80211_ptr->wiphy) {
wireless_warn_cfg80211_wext();
if (dev->ieee80211_ptr->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO)
return NULL;
handlers = dev->ieee80211_ptr->wiphy->wext;
}
#endif