net: ieee802154: stop dump llsec seclevels for monitors

This patch stops dumping llsec seclevels 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/20210405003054.256017-13-aahringo@redhat.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>

diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index 88735f0..9158b09 100644 (file)
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -2026,6 +2026,11 @@ nl802154_dump_llsec_seclevel(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;