netdev - [PATCH RESEND wpan 13/15] net: ieee802154: forbid monitor for add llsec seclevel

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Message-Id: <20210405003054.256017-14-aahringo@redhat.com>
Date:   Sun,  4 Apr 2021 20:30:52 -0400
From:   Alexander Aring <aahringo@...hat.com>
To:     stefan@...enfreihafen.org
Cc:     linux-wpan@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH RESEND wpan 13/15] net: ieee802154: forbid monitor for add llsec seclevel

This patch forbids to add llsec seclevel 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@...hat.com>
---
 net/ieee802154/nl802154.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index 9158b095ccf9..28427ce52a9b 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -2115,6 +2115,9 @@ static int nl802154_add_llsec_seclevel(struct sk_buff *skb,
 	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
 	struct ieee802154_llsec_seclevel sl;
 
+	if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
+		return -EOPNOTSUPP;
+
 	if (llsec_parse_seclevel(info->attrs[NL802154_ATTR_SEC_LEVEL],
 				 &sl) < 0)
 		return -EINVAL;
-- 
2.26.3