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cfg80211: Purge frame registrations on iftype change
Currently frame registrations are not purged, even when changing the interface type. This can lead to potentially weird situations where frames possibly not allowed on a given interface type remain registered due to the type switching happening after registration. The kernel currently relies on userspace apps to actually purge the registrations themselves, this is not something that the kernel should rely on. Add a call to cfg80211_mlme_purge_registrations() to forcefully remove any registrations left over prior to switching the iftype. Cc: stable@vger.kernel.org Signed-off-by: Denis Kenzior <denkenz@gmail.com> Link: https://lore.kernel.org/r/20190828211110.15005-1-denkenz@gmail.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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@ -964,6 +964,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
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}
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cfg80211_process_rdev_events(rdev);
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cfg80211_process_rdev_events(rdev);
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cfg80211_mlme_purge_registrations(dev->ieee80211_ptr);
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}
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}
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err = rdev_change_virtual_intf(rdev, dev, ntype, params);
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err = rdev_change_virtual_intf(rdev, dev, ntype, params);
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