Currently, it is possible to configure the interlink port, but no way to read it back from userspace. Add it to the output of hsr_fill_info(), so it can be read from userspace, for example: $ ip -d link show hsr0 12: hsr0: mtu ... ... hsr slave1 veth0 slave2 veth1 interlink veth2 ... Signed-off-by: Jan Vaclav --- net/hsr/hsr_netlink.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/net/hsr/hsr_netlink.c b/net/hsr/hsr_netlink.c index 4461adf69623..851187130755 100644 --- a/net/hsr/hsr_netlink.c +++ b/net/hsr/hsr_netlink.c @@ -160,6 +160,12 @@ static int hsr_fill_info(struct sk_buff *skb, const struct net_device *dev) goto nla_put_failure; } + port = hsr_port_get_hsr(hsr, HSR_PT_INTERLINK); + if (port) { + if (nla_put_u32(skb, IFLA_HSR_INTERLINK, port->dev->ifindex)) + goto nla_put_failure; + } + if (nla_put(skb, IFLA_HSR_SUPERVISION_ADDR, ETH_ALEN, hsr->sup_multicast_addr) || nla_put_u16(skb, IFLA_HSR_SEQ_NR, hsr->sequence_nr)) -- 2.51.0