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%3Ba=su...
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