route_req 1993 include/net/tcp.h struct dst_entry *(*route_req)(const struct sock *sk, struct flowi *fl, route_req 6623 net/ipv4/tcp_input.c dst = af_ops->route_req(sk, &fl, req); route_req 1387 net/ipv4/tcp_ipv4.c .route_req = tcp_v4_route_req, route_req 799 net/ipv6/tcp_ipv6.c .route_req = tcp_v6_route_req,