On Mon, 2013-03-04 at 22:08 +0800, Zang MingJie wrote: > We should reset nf settings bond to the skb as ipip/ipgre do. > > If not, the conntrack/nat info bond to the origin packet may continually > redirect the packet to vxlan interface causing a routing loop. > > this is the scenario: > > VETP VXLAN Gateway > /----\ /---------------\ > | | | | > | vx+--+vx --NAT-> eth0+--> Internet > | | | | > \----/ \---------------/ > > when there are any packet coming from internet to the vetp, there will be lots > of garbage packets coming out the gateway's vxlan interface, but none actually > sent to the physical interface, because they are redirected back to the vxlan > interface in the postrouting chain of NAT rule, and dmesg complains: > > Mar 1 21:52:53 debian kernel: [ 8802.997699] Dead loop on virtual device > vxlan0, fix it urgently! > Mar 1 21:52:54 debian kernel: [ 8804.004907] Dead loop on virtual device > vxlan0, fix it urgently! > Mar 1 21:52:55 debian kernel: [ 8805.012189] Dead loop on virtual device > vxlan0, fix it urgently! > Mar 1 21:52:56 debian kernel: [ 8806.020593] Dead loop on virtual device > vxlan0, fix it urgently! > > the patch should fix the problem > > Signed-off-by: Zang MingJie <zealot0...@gmail.com> > --- > drivers/net/vxlan.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c > index f10e58a..c3e3d29 100644 > --- a/drivers/net/vxlan.c > +++ b/drivers/net/vxlan.c > @@ -961,6 +961,8 @@ static netdev_tx_t vxlan_xmit(struct sk_buff *skb, struct > net_device *dev) > iph->ttl = ttl ? : ip4_dst_hoplimit(&rt->dst); > tunnel_ip_select_ident(skb, old_iph, &rt->dst); > > + nf_reset(skb); > + > vxlan_set_owner(dev, skb); > > /* See iptunnel_xmit() */
As mentioned in MAINTAINERS file, networking patches should be sent to : M: "David S. Miller" <da...@davemloft.net> L: net...@vger.kernel.org Thanks ! -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
