[ovs-discuss] OF 1.3 question

[Ben Pfaff]

On Mon, Jun 29, 2015 at 09:59:14AM +0000, Abhijit Bhadra wrote:
> Hi,
> I am using ovs-ofctl to test addition/modification/deletion of OF 1.3 flows. I was using the following command to do the actions=mod_nw_tos for OF 1.0,
> ovs-ofctl add-flow tcp:10.130.177.160 dl_vlan=128,in_port=12,table=60,priority=100,actions=mod_nw_tos:4,output:24
> 
> Now I am using ovs-ofctl -O openflow13 add-flow tcp:10.130.177.160 dl_vlan=128,in_port=12,table=60,priority=100,actions=mod_nw_tos:4,output:24. But I get the following error:
> "ovs-ofctl: none of the usable flow formats (OpenFlow10+table_id,NXM+table_id) is among the allowed flow formats (OXM-OpenFlow13)".
> How do I achieve the same actions=mod_nw_tos for OF 1.3 using ovs-ofctl?

In OF1.3, the set_field action that mod_nw_tos gets translated into
requires the flow to match on a field that ensures that a nw_tos field
is present.  That is, if you add "ip" or "ipv6" to your match, it will
work.