[ovs-discuss] Reg pushing two mpls labels

Stefano Salsano stefano.salsano at uniroma2.it
Thu Nov 20 17:35:36 UTC 2014


Hi,

it seems you have hit the same bug that we have reported in

http://openvswitch.org/pipermail/discuss/2014-November/015581.html

we are still investigating the problem...

ciao
Stefano

Il 20/11/2014 12:26, kunapaneni prashanth ha scritto:
> Hi,
>   i am using the latest openvswitch code to try out mpls. Can someone
> help me with this.
>
> with single lable push and pop, i am able to ping between two hosts
> and can see kernel datapath entries installed.
>
>   Now, when testing with two labels, i am running into a problem. I
> don't see any datapath entries being installed and all packets are
> re-directed to userspace.
>
>
> also, in Rx direction, where i had to pop two mpls labels, flow
> installation is failing.
>
> i installed following flows
>
> ovs-ofctl  add-flow br0 "table=0,priority=99,dl_type=0x806,actions=normal"
>
> ovs-ofctl  add-flow br0 "table=0,priority=98,in_port=2,actions=resubmit(,2)"
> ovs-ofctl  add-flow br0
> "table=2,priority=97,in_port=2,actions=push_mpls:0x8847,resubmit(,3)"
> ovs-ofctl  add-flow br0
> "table=3,priority=97,in_port=2,dl_type=0x8847,actions=push_mpls:0x8847,set_mpls_label:10,output=1"
>
> ovs-ofctl  add-flow br0
> "table=0,priority=98,in_port=1,dl_type=0x8847,mpls_bos=0,actions=pop_mpls:0x8847,resubmit(,1)"
> ovs-ofctl  add-flow br0
> "table=1,priority=98,in_port=1,dl_type=0x8847,mpls_bos=1,actions=pop_mpls:0x800,output:2"
>
>
>
> i can see from packets counts that these flows are being hit.
>
>
> [root at localhost openvswitch-2.3.90]# ovs-ofctl dump-flows br0
> NXST_FLOW reply (xid=0x4):
>   cookie=0x0, duration=419.658s, table=0, n_packets=0, n_bytes=0,
> idle_age=419, priority=98,mpls,in_port=1,mpls_bos=0
> actions=pop_mpls:0x8847,resubmit(,1)
>   cookie=0x0, duration=419.674s, table=0, n_packets=418, n_bytes=40964,
> idle_age=0, priority=98,in_port=2 actions=resubmit(,2)
>   cookie=0x0, duration=419.680s, table=0, n_packets=25, n_bytes=1266,
> idle_age=6, priority=99,arp actions=NORMAL
>   cookie=0x0, duration=419.651s, table=1, n_packets=0, n_bytes=0,
> idle_age=419, priority=98,mpls,in_port=1,mpls_bos=1
> actions=pop_mpls:0x0800,output:2
>   cookie=0x0, duration=419.669s, table=2, n_packets=418, n_bytes=40964,
> idle_age=0, priority=97,in_port=2
> actions=push_mpls:0x8847,resubmit(,3)
>   cookie=0x0, duration=419.664s, table=3, n_packets=418, n_bytes=40964,
> idle_age=0, priority=97,mpls,in_port=2
> actions=push_mpls:0x8847,set_mpls_label(10),output:1
>
>
> kernel datapath has following flows
>
> [root at localhost openvswitch-2.3.90]# ovs-dpctl dump-flows
> recirc_id(0),in_port(4),eth_type(0x0800),ipv4(tos=0/0xfc,ttl=64,frag=no),
> packets:164, bytes:16072, used:0.619s,
> actions:userspace(pid=4294938863,slow_path(action))
>
>
>
> i looked into /var/log/messages and see following flow entry failing
> to installing for Rx direction.
>
>
> Nov 20 16:51:50 localhost ovs-vswitchd:
> ovs|23834|dpif(handler6)|WARN|system at ovs-system: failed to put[create]
> (Invalid argument)
> recirc_id(0),dp_hash(0/0),skb_priority(0/0),in_port(2),skb_mark(0/0),eth(src=00:27:0e:0b:cf:f8/00:00:00:00:00:00,dst=52:54:00:b1:94:22/00:00:00:00:00:00),eth_type(0x8847),mpls(label=10/0x0,tc=0/0,ttl=64/0x0,bos=0/1),
> actions:pop_mpls(eth_type=0x8847),pop_mpls(eth_type=0x800),4
>
>
>
>
> any pointers on where i am going wrong will help.
>
> Thank you.
> _______________________________________________
> discuss mailing list
> discuss at openvswitch.org
> http://openvswitch.org/mailman/listinfo/discuss
>


-- 
*******************************************************************
Stefano Salsano
Professore Associato
Dipartimento Ingegneria Elettronica
Universita' di Roma Tor Vergata
Via del Politecnico, 1 - 00133 Roma - ITALY

http://netgroup.uniroma2.it/Stefano_Salsano/

E-mail  : stefano.salsano at uniroma2.it
Cell.   : +39 320 4307310
Office  : (Tel.) +39 06 72597770  (Fax.) +39 06 72597435
*******************************************************************



More information about the discuss mailing list