From: Alexander Aring <aahringo@redhat.com>
Date: Mon, 5 Apr 2021 00:30:45 +0000 (-0400)
Subject: net: ieee802154: stop dump llsec devs for monitors
X-Git-Tag: v4.4.268~24
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0068d5f0ac1048d68fe838ef51c075bd7d1c510e;p=thirdparty%2Fkernel%2Fstable.git

net: ieee802154: stop dump llsec devs for monitors

[ Upstream commit 5582d641e6740839c9b83efd1fbf9bcd00b6f5fc ]

This patch stops dumping llsec devs 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/20210405003054.256017-7-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 78a0edf268541..e4ba6764c4a30 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -1658,6 +1658,11 @@ nl802154_dump_llsec_dev(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;