6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johannes Berg johannes.berg@intel.com
[ Upstream commit 7a27b73943a70ee226fa125327101fb18e94701d ]
When changing the interface type, all activity on the interface has to be stopped first. This was done independent of existing code in cfg80211_leave(), so didn't handle e.g. background radar detection. Use cfg80211_leave() to handle it the same way.
Note that cfg80211_leave() behaves slightly differently for IBSS in wireless extensions, it won't send an event in that case. We could handle that, but since nl80211 was used to change the type, IBSS is rare, and wext is already a corner case, it doesn't seem worth it.
Link: https://patch.msgid.link/20251121174021.922ef48ce007.I970c8514252ef8a864a7fb... Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/wireless/util.c | 23 +---------------------- 1 file changed, 1 insertion(+), 22 deletions(-)
diff --git a/net/wireless/util.c b/net/wireless/util.c index 56724b33af045..4eb028ad16836 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -1203,28 +1203,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev, dev->ieee80211_ptr->use_4addr = false; rdev_set_qos_map(rdev, dev, NULL);
- switch (otype) { - case NL80211_IFTYPE_AP: - case NL80211_IFTYPE_P2P_GO: - cfg80211_stop_ap(rdev, dev, -1, true); - break; - case NL80211_IFTYPE_ADHOC: - cfg80211_leave_ibss(rdev, dev, false); - break; - case NL80211_IFTYPE_STATION: - case NL80211_IFTYPE_P2P_CLIENT: - cfg80211_disconnect(rdev, dev, - WLAN_REASON_DEAUTH_LEAVING, true); - break; - case NL80211_IFTYPE_MESH_POINT: - /* mesh should be handled? */ - break; - case NL80211_IFTYPE_OCB: - cfg80211_leave_ocb(rdev, dev); - break; - default: - break; - } + cfg80211_leave(rdev, dev->ieee80211_ptr);
cfg80211_process_rdev_events(rdev); cfg80211_mlme_purge_registrations(dev->ieee80211_ptr);