3.8.13.11 -stable review patch. If anyone has any objections, please let me know.
------------------ From: Chris Clark <[email protected]> [ Upstream commit c27c9322d015dc1d9dfdf31724fca71c0476c4d1 ] 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 <[email protected]> Bisected-by: Chris Clark <[email protected]> Tested-by: Chris Clark <[email protected]> Suggested-by: Julian Anastasov <[email protected]> Signed-off-by: Chris Clark <[email protected]> Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Kamal Mostafa <[email protected]> --- net/ipv4/raw.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c index 6f08991..47b4797 100644 --- a/net/ipv4/raw.c +++ b/net/ipv4/raw.c @@ -573,7 +573,8 @@ 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) { -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
