[PATCH net-next v5 4/5] net: bridge: Set strict_start_type for br_policy

[Johannes Nixdorf <jnixdorf-oss@xxxxxx>]

Set any new attributes added to br_policy to be parsed strictly, to
prevent userspace from passing garbage.

Signed-off-by: Johannes Nixdorf <jnixdorf-oss@xxxxxx>
---
 net/bridge/br_netlink.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 0c3cf6e6dea2..5ad4abfcb7ba 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -1229,6 +1229,8 @@ static size_t br_port_get_slave_size(const struct net_device *brdev,
 }
 
 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
+	[IFLA_BR_UNSPEC]	= { .strict_start_type =
+				    IFLA_BR_FDB_N_LEARNED },
 	[IFLA_BR_FORWARD_DELAY]	= { .type = NLA_U32 },
 	[IFLA_BR_HELLO_TIME]	= { .type = NLA_U32 },
 	[IFLA_BR_MAX_AGE]	= { .type = NLA_U32 },

-- 
2.42.0