This patch fixes the kernel soft lockup issue with vxlan configuration where
the tunneled packet is sent on the same bridge where vxlan port is attched to.
It detects the loop in vxlan xmit functionb and drops if loop is detected.
Signed-off-by: Neelakantam Gaddam <neelugad...@gmail.com>
---
datapath/linux/compat/vxlan.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/datapath/linux/compat/vxlan.c b/datapath/linux/compat/vxlan.c
index d27a5e2..0f4034f 100644
--- a/datapath/linux/compat/vxlan.c
+++ b/datapath/linux/compat/vxlan.c
@@ -1115,7 +1115,8 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct
net_device *dev,
goto tx_error;
}
- if (rt->dst.dev == dev) {
+ if ((rt->dst.dev == dev) ||
+ (OVS_CB(skb)->input_vport->dev == rt->dst.dev)) {
netdev_dbg(dev, "circular route to %pI4\n",
&dst->sin.sin_addr.s_addr);
dev->stats.collisions++;
@@ -1174,7 +1175,8 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct
net_device *dev,
goto tx_error;
}
- if (ndst->dev == dev) {
+ if ((ndst->dev == dev) ||
+ (OVS_CB(skb)->input_vport->dev == ndst->dev)) {
netdev_dbg(dev, "circular route to %pI6\n",
&dst->sin6.sin6_addr);
dst_release(ndst);
--
1.8.3.1
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