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@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Sun Jan 28 17:35:08 CET 2018
From: David Ahern <dsahern@xxxxxxxxx>
Date: Wed, 24 Jan 2018 19:37:37 -0800
Subject: net: vrf: Add support for sends to local broadcast address
From: David Ahern <dsahern@xxxxxxxxx>
[ 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@xxxxxxxxx>
Signed-off-by: David Ahern <dsahern@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxxx 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