ECN_ALLOWED
ip_ecn_ingress((ifp->if_flags & IFF_LINK1) ? ECN_ALLOWED:
ip6_ecn_ingress((ifp->if_flags & IFF_LINK1) ? ECN_ALLOWED:
if (ip_ecn_egress((ifp->if_flags & IFF_LINK1) ? ECN_ALLOWED:
if (ip6_ecn_egress((ifp->if_flags & IFF_LINK1) ? ECN_ALLOWED:
ip_ecn_ingress(ECN_ALLOWED, &ip->ip_tos, &tos);
ip_ecn_egress(ECN_ALLOWED, &otos, &itos);
case ECN_ALLOWED:
case ECN_ALLOWED: