[PATCH 4.9 13/37] net: ieee802154: forbid monitor for add llsec devkey

From: Greg Kroah-Hartman
Date: Mon Apr 26 2021 - 03:32:40 EST


From: Alexander Aring <aahringo@xxxxxxxxxx>

[ Upstream commit a347b3b394868fef15b16f143719df56184be81d ]

This patch forbids to add llsec devkey 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@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20210405003054.256017-11-aahringo@xxxxxxxxxx
Signed-off-by: Stefan Schmidt <stefan@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
net/ieee802154/nl802154.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index dfa9cedd27c8..57da67e2732d 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -1951,6 +1951,9 @@ static int nl802154_add_llsec_devkey(struct sk_buff *skb, struct genl_info *info
struct ieee802154_llsec_device_key key;
__le64 extended_addr;

+ if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
+ return -EOPNOTSUPP;
+
if (!info->attrs[NL802154_ATTR_SEC_DEVKEY] ||
nla_parse_nested(attrs, NL802154_DEVKEY_ATTR_MAX,
info->attrs[NL802154_ATTR_SEC_DEVKEY],
--
2.30.2