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Diffstat (limited to 'net/hsr/hsr_netlink.c')
-rw-r--r--net/hsr/hsr_netlink.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/net/hsr/hsr_netlink.c b/net/hsr/hsr_netlink.c
index 5465a395da04..1decb25f6764 100644
--- a/net/hsr/hsr_netlink.c
+++ b/net/hsr/hsr_netlink.c
@@ -69,10 +69,16 @@ static int hsr_newlink(struct net *src_net, struct net_device *dev,
else
multicast_spec = nla_get_u8(data[IFLA_HSR_MULTICAST_SPEC]);
- if (!data[IFLA_HSR_VERSION])
+ if (!data[IFLA_HSR_VERSION]) {
hsr_version = 0;
- else
+ } else {
hsr_version = nla_get_u8(data[IFLA_HSR_VERSION]);
+ if (hsr_version > 1) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Only versions 0..1 are supported");
+ return -EINVAL;
+ }
+ }
return hsr_dev_finalize(dev, link, multicast_spec, hsr_version, extack);
}