ipv6: Create inet6_csk_route_req().
Brother of ipv4's inet_csk_route_req().
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c
index 861d252..e46305d 100644
--- a/net/ipv6/inet6_connection_sock.c
+++ b/net/ipv6/inet6_connection_sock.c
@@ -54,6 +54,38 @@
EXPORT_SYMBOL_GPL(inet6_csk_bind_conflict);
+struct dst_entry *inet6_csk_route_req(struct sock *sk,
+ const struct request_sock *req)
+{
+ struct inet6_request_sock *treq = inet6_rsk(req);
+ struct ipv6_pinfo *np = inet6_sk(sk);
+ struct in6_addr *final_p, final;
+ struct dst_entry *dst;
+ struct flowi fl;
+
+ memset(&fl, 0, sizeof(fl));
+ fl.proto = IPPROTO_TCP;
+ ipv6_addr_copy(&fl.fl6_dst, &treq->rmt_addr);
+ final_p = fl6_update_dst(&fl, np->opt, &final);
+ ipv6_addr_copy(&fl.fl6_src, &treq->loc_addr);
+ fl.oif = sk->sk_bound_dev_if;
+ fl.mark = sk->sk_mark;
+ fl.fl_ip_dport = inet_rsk(req)->rmt_port;
+ fl.fl_ip_sport = inet_rsk(req)->loc_port;
+ security_req_classify_flow(req, &fl);
+
+ if (ip6_dst_lookup(sk, &dst, &fl))
+ return NULL;
+
+ if (final_p)
+ ipv6_addr_copy(&fl.fl6_dst, final_p);
+
+ if ((xfrm_lookup(sock_net(sk), &dst, &fl, sk, 0)) < 0)
+ return NULL;
+
+ return dst;
+}
+
/*
* request_sock (formerly open request) hash tables.
*/