[PATCH wpan-next v2 2/6] net: ieee802154: Ensure only FFDs can become PAN coordinators

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This is a limitation clearly listed in the specification. Now that we
have device types,let's ensure that only FFDs can become PAN
coordinators.

Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
---
 net/ieee802154/nl802154.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index 638bf544f102..0c6fc3385320 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -924,6 +924,9 @@ static int nl802154_new_interface(struct sk_buff *skb, struct genl_info *info)
 			return -EINVAL;
 	}
 
+	if (type == NL802154_IFTYPE_COORD && !cfg802154_is_ffd(rdev))
+		return -EINVAL;
+
 	if (info->attrs[NL802154_ATTR_EXTENDED_ADDR])
 		extended_addr = nla_get_le64(info->attrs[NL802154_ATTR_EXTENDED_ADDR]);
 
-- 
2.34.1




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