net: ieee802154: stop dump llsec devkeys for monitors

BugLink: https://bugs.launchpad.net/bugs/1926999
[ Upstream commit 080d1a57a94d93e70f84b7a360baa351388c574f ]

This patch stops dumping llsec devkeys for monitors which we don't support
yet. Otherwise we will access llsec mib which isn't initialized for
monitors.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20210405003054.256017-10-aahringo@redhat.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index da4bd6bc4567df70d7d52f971ad01703ed54c2f9..40022e137094a56a8dfd3750bd1d378427efb86b 100644 (file)
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -1858,6 +1858,11 @@ nl802154_dump_llsec_devkey(struct sk_buff *skb, struct netlink_callback *cb)
        if (err)
                return err;
 
+       if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
+               err = skb->len;
+               goto out_err;
+       }
+
        if (!wpan_dev->netdev) {
                err = -EINVAL;
                goto out_err;