net: ieee802154: forbid monitor for del llsec dev

[ Upstream commit ad8f9de1f3566686af35b1c6b43240726541da61 ]

This patch forbids to del llsec dev for monitor interfaces 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/20210405003054.256017-9-aahringo@redhat.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index c8576dc0686d6fef9ccb1a5c0a425180eca6629a..da4bd6bc4567df70d7d52f971ad01703ed54c2f9 100644 (file)
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -1786,6 +1786,9 @@ static int nl802154_del_llsec_dev(struct sk_buff *skb, struct genl_info *info)
        struct nlattr *attrs[NL802154_DEV_ATTR_MAX + 1];
        __le64 extended_addr;
 
+       if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
+               return -EOPNOTSUPP;
+
        if (!info->attrs[NL802154_ATTR_SEC_DEVICE] ||
            nla_parse_nested_deprecated(attrs, NL802154_DEV_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVICE], nl802154_dev_policy, info->extack))
                return -EINVAL;