ipv4: Make Netfilter's ip_route_me_harder() non-local address compatible

Netfilter's ip_route_me_harder() tries to re-route packets either
generated or re-routed by Netfilter. This patch changes
ip_route_me_harder() to handle packets from non-locally-bound sockets
with IP_TRANSPARENT set as local and to set the appropriate flowi
flags when re-doing the routing lookup.

Signed-off-by: KOVACS Krisztian <hidden@sch.bme.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 0c1ae68ee84b..432c570c9f5f 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -335,6 +335,7 @@ struct dst_entry* inet_csk_route_req(struct sock *sk,
                                         .saddr = ireq->loc_addr,
                                         .tos = RT_CONN_FLAGS(sk) } },
                             .proto = sk->sk_protocol,
+                            .flags = inet_sk_flowi_flags(sk),
                             .uli_u = { .ports =
                                        { .sport = inet_sk(sk)->sport,
                                          .dport = ireq->rmt_port } } };