Hi Ben,
Thanks for your response.
>The "learn" functionality is meant for setting up flows that do simple
>things like loading values. If you want another resubmit, you can
>always do it after resubmitting to the table that contained the learned
>flows.
Let me clarity with a more detailed example:
This is the original flow with learn actions in table=10
ovs-ofctl add-flow br-tun
"table=10,actions=learn(table=20,hard_timeout=300,priority=1,cookie=0x8566f3d5b5121f44,NXM_OF_VLAN_TCI[0..11],NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[],load:0->NXM_OF_VLAN_TCI[],load:NXM_NX_TUN_ID[]->NXM_NX_TUN_ID[],output:NXM_OF_IN_PORT[]),output:1)
These are the learnt flows in table 20:
cookie=0x8566f3d5b5121f44, duration=158251.837s, table=20, n_packets=59571,
n_bytes=5725581, idle_age=1, hard_age=65534,
priority=2,dl_vlan=2,dl_dst=fa:16:3e:fc:11:39
actions=strip_vlan,load:0x2044->NXM_NX_TUN_ID[],output:2
cookie=0x8566f3d5b5121f44, duration=236.832s, table=20, n_packets=0, n_bytes=0,
hard_timeout=300, idle_age=236, hard_age=0,
priority=1,vlan_tci=0x0002/0x0fff,dl_dst=fa:16:3e:fc:11:39
actions=load:0->NXM_OF_VLAN_TCI[],load:0x2044->NXM_NX_TUN_ID[],output:2
This is the added flow which will resubmit packets not matching the learnt
flows to table 22.
cookie=0x8566f3d5b5121f44, duration=179860.984s, table=20, n_packets=4,
n_bytes=316, idle_age=49657, hard_age=65534, priority=0 actions=resubmit(,22)
What I need is a way to resubmit packets matching the two learnt flows to table
22.If I put the flow with learn action in table=10 as follows (without an
output action in the learnt flows)
ovs-ofctl add-flow br-tun
"table=10,actions=learn(table=20,hard_timeout=300,priority=1,cookie=0x8566f3d5b5121f44,NXM_OF_VLAN_TCI[0..11],NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[],load:0->NXM_OF_VLAN_TCI[],load:NXM_NX_TUN_ID[]->NXM_NX_TUN_ID[]),output:1)
my learnt flows will be as followscookie=0x8566f3d5b5121f44,
duration=158251.837s, table=20, n_packets=59571, n_bytes=5725581, idle_age=1,
hard_age=65534, priority=2,dl_vlan=2,dl_dst=fa:16:3e:fc:11:39
actions=strip_vlan,load:0x2044->NXM_NX_TUN_ID[]
cookie=0x8566f3d5b5121f44, duration=236.832s, table=20, n_packets=0, n_bytes=0,
hard_timeout=300, idle_age=236, hard_age=0,
priority=1,vlan_tci=0x0002/0x0fff,dl_dst=fa:16:3e:fc:11:39
actions=load:0->NXM_OF_VLAN_TCI[],load:0x2044->NXM_NX_TUN_ID[]
Without a default action, packets matching these flows will be dropped. I need
packets matching these flows to in the learnt table be resubmitted to another
table.
Thanks,Farhad.
On Wednesday, June 15, 2016 11:50 AM, Ben Pfaff <b...@ovn.org> wrote:
On Wed, Jun 15, 2016 at 06:38:42PM +0000, Farhad Sunavala wrote:
> I would like to implement a learnt rule with an action
> resubmit.Currently, OVS does not support learn with the learnt rule
> having a resubmit action.Before I have a go at implementing this
> functionality, I would like to check if thereare any gotches why this
> should not be done.
The "learn" functionality is meant for setting up flows that do simple
things like loading values. If you want another resubmit, you can
always do it after resubmitting to the table that contained the learned
flows.
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