lwtunnel_headroom 1322 net/ipv4/route.c return mtu - lwtunnel_headroom(dst->lwtstate, mtu); lwtunnel_headroom 1413 net/ipv4/route.c return mtu - lwtunnel_headroom(nhc->nhc_lwtstate, mtu); lwtunnel_headroom 1602 net/ipv6/route.c return mtu - lwtunnel_headroom(nh->fib_nh_lws, mtu); lwtunnel_headroom 3113 net/ipv6/route.c return mtu - lwtunnel_headroom(dst->lwtstate, mtu); lwtunnel_headroom 3154 net/ipv6/route.c return mtu - lwtunnel_headroom(nh->fib_nh_lws, mtu);