[PATCH] [TPROXY] fill struct flowi->flags in udp_sendmsg()

[Balazs Scheidler]

    udp_sendmsg() didn't fill struct flowi->flags, which means that
    the route lookup would fail for non-local IPs even if the
    IP_TRANSPARENT sockopt was set.

    This prevents sendto() to work properly for UDP sockets, whereas
    bind(foreign-ip) + connect() + send() worked fine.

Signed-off-by: Balazs Scheidler <bazsi at balabit.hu>
---
 net/ipv4/udp.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index cf02701..98c1fd0 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -633,6 +633,7 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 						.saddr = saddr,
 						.tos = tos } },
 				    .proto = sk->sk_protocol,
+				    .flags = inet_sk_flowi_flags(sk),
 				    .uli_u = { .ports =
 					       { .sport = inet->sport,
 						 .dport = dport } } };
-- 
1.5.4.3


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