There is no default value for the tunnel TTL so it must always be
included in flow keys sent from userspace to kernel. The kernel
should also respect this convertion when sending flows to userspace
by always including the TTL in tunnel flows.
CC: Andy Zhou <az...@nicira.com>
Signed-off-by: Jesse Gross <je...@nicira.com>
---
datapath/flow.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/datapath/flow.c b/datapath/flow.c
index 45b85ab..a70b974 100644
--- a/datapath/flow.c
+++ b/datapath/flow.c
@@ -1289,8 +1289,7 @@ int ipv4_tun_to_nlattr(struct sk_buff *skb,
if (output->ipv4_tos &&
nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TOS, output->ipv4_tos))
return -EMSGSIZE;
- if (output->ipv4_ttl &&
- nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TTL, output->ipv4_ttl))
+ if (nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TTL, output->ipv4_ttl))
return -EMSGSIZE;
if ((output->tun_flags & TUNNEL_DONT_FRAGMENT) &&
nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT))
--
1.8.1.2
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