netdev - Re: sendto() bug?

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Message-ID: <alpine.DEB.2.02.1308261319370.23968@optio.utah.ind.alcatel.com>
Date:	Mon, 26 Aug 2013 14:14:21 -0600 (MDT)
From:	Chris Clark <chris.clark@...atel-lucent.com>
To:	Julian Anastasov <ja@....bg>
cc:	davem@...emloft.net, netdev@...r.kernel.org
Subject: Re: sendto() bug?

On Sat, 24 Aug 2013, Julian Anastasov wrote:
> On Fri, 23 Aug 2013, Chris Clark wrote:
> > In the same vein as 2ad5b9e4, I'm soliciting feedback on something
> > similar for raw_sendmsg():
[snip]

> 	So, something like
> (inet->hdrincl ? FLOWI_FLAG_KNOWN_NH : 0) ?


Many thanks.  This patch indeed appears to resolve the problem:

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) {


Chris
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