summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorChris Clark <chris.clark@alcatel-lucent.com>2013-08-27 12:02:15 -0600
committerDavid S. Miller <davem@davemloft.net>2013-08-29 15:57:52 -0400
commitc27c9322d015dc1d9dfdf31724fca71c0476c4d1 (patch)
tree175117e64d2e2fc3df39728180e27e032462702e
parente3e12028315749b7fa2edbc37328e5847be9ede9 (diff)
downloadlinux-c27c9322d015dc1d9dfdf31724fca71c0476c4d1.tar.gz
ipv4: sendto/hdrincl: don't use destination address found in header
ipv4: raw_sendmsg: don't use header's destination address A sendto() regression was bisected and found to start with commit f8126f1d5136be1 (ipv4: Adjust semantics of rt->rt_gateway.) The problem is that it tries to ARP-lookup the constructed packet's destination address rather than the explicitly provided address. Fix this using FLOWI_FLAG_KNOWN_NH so that given nexthop is used. cf. commit 2ad5b9e4bd314fc685086b99e90e5de3bc59e26b Reported-by: Chris Clark <chris.clark@alcatel-lucent.com> Bisected-by: Chris Clark <chris.clark@alcatel-lucent.com> Tested-by: Chris Clark <chris.clark@alcatel-lucent.com> Suggested-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Chris Clark <chris.clark@alcatel-lucent.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv4/raw.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index dd44e0a..61e60d6 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -571,7 +571,8 @@ static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
flowi4_init_output(&fl4, ipc.oif, sk->sk_mark, tos,
RT_SCOPE_UNIVERSE,
inet->hdrincl ? IPPROTO_RAW : sk->sk_protocol,
- inet_sk_flowi_flags(sk) | FLOWI_FLAG_CAN_SLEEP,
+ inet_sk_flowi_flags(sk) | FLOWI_FLAG_CAN_SLEEP |
+ (inet->hdrincl ? FLOWI_FLAG_KNOWN_NH : 0),
daddr, saddr, 0, 0);
if (!inet->hdrincl) {