From: Johannes Berg <johannes.berg@xxxxxxxxx>
Wireless extensions are already disabled if MLO is enabled,
given that we cannot support MLO there with all the hard-
coded assumptions about BSSID etc.
However, the WiFi7 ecosystem is still stabilizing, and some
devices may need MLO disabled while that happens. In that
case, we might end up with a device that supports wext (but
not MLO) in one kernel, and then breaks wext in the future
(by enabling MLO), which is not desirable.
Add a flag to let such drivers/devices disable wext even if
MLO isn't yet enabled.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
include/net/cfg80211.h | 2 ++
net/wireless/wext-core.c | 7 +++++--
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 2e2be4fd2bb6..1e09329acc42 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -4991,6 +4991,7 @@ struct cfg80211_ops {
* set this flag to update channels on beacon hints.
* @WIPHY_FLAG_SUPPORTS_NSTR_NONPRIMARY: support connection to non-primary link
* of an NSTR mobile AP MLD.
+ * @WIPHY_FLAG_DISABLE_WEXT: disable wireless extensions for this device
*/
enum wiphy_flags {
WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK = BIT(0),
@@ -5002,6 +5003,7 @@ enum wiphy_flags {
WIPHY_FLAG_4ADDR_STATION = BIT(6),
WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7),
WIPHY_FLAG_IBSS_RSN = BIT(8),
+ WIPHY_FLAG_DISABLE_WEXT = BIT(9),
WIPHY_FLAG_MESH_AUTH = BIT(10),
WIPHY_FLAG_SUPPORTS_EXT_KCK_32 = BIT(11),
WIPHY_FLAG_SUPPORTS_NSTR_NONPRIMARY = BIT(12),
diff --git a/net/wireless/wext-core.c b/net/wireless/wext-core.c
index a161c64d1765..838ad6541a17 100644
--- a/net/wireless/wext-core.c
+++ b/net/wireless/wext-core.c
@@ -4,6 +4,7 @@
* Authors : Jean Tourrilhes - HPL - <jt@xxxxxxxxxx>
* Copyright (c) 1997-2007 Jean Tourrilhes, All Rights Reserved.
* Copyright 2009 Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
+ * Copyright (C) 2024 Intel Corporation
*
* (As all part of the Linux kernel, this file is GPL)
*/
@@ -662,7 +663,8 @@ 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)
+ if (dev->ieee80211_ptr->wiphy->flags & (WIPHY_FLAG_SUPPORTS_MLO |
+ WIPHY_FLAG_DISABLE_WEXT))
return NULL;
return dev->ieee80211_ptr->wiphy->wext->get_wireless_stats(dev);
}
@@ -704,7 +706,8 @@ 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)
+ if (dev->ieee80211_ptr->wiphy->flags & (WIPHY_FLAG_SUPPORTS_MLO |
+ WIPHY_FLAG_DISABLE_WEXT))
return NULL;
handlers = dev->ieee80211_ptr->wiphy->wext;
}
--
2.44.0
