blackhole_route 333 include/net/xfrm.h struct dst_entry *(*blackhole_route)(struct net *net, struct dst_entry *orig); blackhole_route 156 net/ipv4/xfrm4_policy.c .blackhole_route = ipv4_blackhole_route, blackhole_route 173 net/ipv6/xfrm6_policy.c .blackhole_route = ip6_blackhole_route, blackhole_route 2999 net/xfrm/xfrm_policy.c ret = afinfo->blackhole_route(net, dst_orig);