Allow copy_ttl_in to function in the case where:
a) The outer header is MPLS;
b) The next-outer header is IP and;
c) The resulting nw ttl will be different from its existing value
In this circumstance a set ipv4 action will be used to adjust the TTL
but the dl_type of the match will be ETH_P_MPLS_UC or ETH_P_MPLS_MC.
Signed-off-by: Simon Horman <ho...@verge.net.au>
---
v2.13 - v2.17
* No change
v2.12
* Use eth_p_mpls helper
v2.11
* First post
---
datapath/datapath.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/datapath/datapath.c b/datapath/datapath.c
index c0c6d03..c2629d4 100644
--- a/datapath/datapath.c
+++ b/datapath/datapath.c
@@ -682,6 +682,10 @@ static int validate_set(const struct nlattr *a,
break;
case OVS_KEY_ATTR_IPV4:
+ /* Gratuitous exception for MPLS to allow copy_ttl_in */
+ if (eth_p_mpls(flow_key->eth.type))
+ break;
+
if (flow_key->eth.type != htons(ETH_P_IP))
return -EINVAL;
@@ -698,6 +702,10 @@ static int validate_set(const struct nlattr *a,
break;
case OVS_KEY_ATTR_IPV6:
+ /* Gratuitous exception for MPLS to allow copy_ttl_in */
+ if (eth_p_mpls(flow_key->eth.type))
+ break;
+
if (flow_key->eth.type != htons(ETH_P_IPV6))
return -EINVAL;
--
1.7.10.4
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