net: ip_gre: do not report erspan_ver for gre or gretap
Report erspan version field to userspace in ipgre_fill_info just for erspan tunnels. The issue can be triggered with the following reproducer: $ip link add name gre1 type gre local 192.168.0.1 remote 192.168.1.1 $ip link set dev gre1 up $ip -d link sh gre1 13: gre1@NONE: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1476 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 link/gre 192.168.0.1 peer 192.168.1.1 promiscuity 0 minmtu 0 maxmtu 0 gre remote 192.168.1.1 local 192.168.0.1 ttl inherit erspan_ver 0 addrgenmode eui64 numtxqueues 1 numrxqueues 1 Fixes: f551c91d ("net: erspan: introduce erspan v2 for ip_gre") Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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