Patch "net: vrf: Add support for sends to local broadcast address" has been added to the 4.14-stable tree

Patch "net: vrf: Add support for sends to local broadcast address" has been added to the 4.14-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    net: vrf: Add support for sends to local broadcast address

to the 4.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     net-vrf-add-support-for-sends-to-local-broadcast-address.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Sun Jan 28 17:35:08 CET 2018
From: David Ahern <dsahern@gmail.com>
Date: Wed, 24 Jan 2018 19:37:37 -0800
Subject: net: vrf: Add support for sends to local broadcast address

From: David Ahern <dsahern@gmail.com>


[ Upstream commit 1e19c4d689dc1e95bafd23ef68fbc0c6b9e05180 ]

Sukumar reported that sends to the local broadcast address
(255.255.255.255) are broken. Check for the address in vrf driver
and do not redirect to the VRF device - similar to multicast
packets.

With this change sockets can use SO_BINDTODEVICE to specify an
egress interface and receive responses. Note: the egress interface
can not be a VRF device but needs to be the enslaved device.

https://bugzilla.kernel.org/show_bug.cgi?id=198521

Reported-by: Sukumar Gopalakrishnan <sukumarg1973@gmail.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/vrf.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/net/vrf.c
+++ b/drivers/net/vrf.c
@@ -674,8 +674,9 @@ static struct sk_buff *vrf_ip_out(struct
 				  struct sock *sk,
 				  struct sk_buff *skb)
 {
-	/* don't divert multicast */
-	if (ipv4_is_multicast(ip_hdr(skb)->daddr))
+	/* don't divert multicast or local broadcast */
+	if (ipv4_is_multicast(ip_hdr(skb)->daddr) ||
+	    ipv4_is_lbcast(ip_hdr(skb)->daddr))
 		return skb;
 
 	if (qdisc_tx_is_default(vrf_dev))


Patches currently in stable-queue which might be from dsahern@gmail.com are

queue-4.14/net-ipv4-make-ip-route-get-match-iif-lo-rules-again.patch
queue-4.14/net-vrf-add-support-for-sends-to-local-broadcast-address.patch
queue-4.14/netlink-extack-needs-to-be-reset-each-time-through-loop.patch
queue-4.14/netlink-reset-extack-earlier-in-netlink_rcv_skb.patch