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List:       openvswitch-discuss
Subject:    [ovs-discuss] Mirror through GRE on DPDK ports not forwarding.
From:       pshelar () nicira ! com (Pravin Shelar)
Date:       2014-12-29 18:58:15
Message-ID: CALnjE+qum04cALoVASrcJ-gDJDnR5cJfZrSfExom2pgfVb-xxw () mail ! gmail ! com
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On Tue, Dec 16, 2014 at 12:24 PM, David Evans
<davidjoshuaevans at gmail.com> wrote:
> Hi All,
>
> I'm setting up a GRE tunnel on an ovs bridge. (trunk ovs and dpdk 1.7.1)
> I have two bridges with one DPDK interface each.
> Traffic generator -> DPDK0 -> B0(bridge) -> GRE0 (172.168.1.4)
> B1 (172.168.1.1) -> DPDK1 -> host 172.168.1.3 (GRE termination)
>
> When I set up GRE as below and push packets in DPDK0 , arp requests for who
> is 172.168.1.3 come out DPDK1 and I see them on the remote host OK So far.
> And I can see replies coming back to DPDK1 from the remote host.
>
> But the original packets to be mirrored don't make it through the tunnel.
>
> Some setup features follow: (routes, gre port setup, etc)
>
> ./ovs-vsctl add-port b0 gre0 -- set Interface gre0 type=gre
> options:remote_ip=172.168.1.3 options:local_ip=172.168.1.4 -- --id=@p get
> port gre0 -- --id=@m create mirror name=m0 select-all=true output-port=@p --
> set bridge b0 mirrors=@m
>

It should work.  Can you post datapath flows while you are trying to
mirror traffic?
`ovs-appctl  dpctl/dump-flows`


> ifcoonfig b1 172.168.1.1 netmask 255.255.255.0
>
> [root at localhost utilities]# route -n
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref    Use
> Iface
> 0.0.0.0         10.218.160.1    0.0.0.0         UG    1024   0        0
> ens2f1
> 10.218.160.0    0.0.0.0         255.255.240.0   U     0      0        0
> ens2f1
> 172.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 b1
>
> [root at localhost utilities]# ./ovs-appctl ovs/route/show
> Route Table:
> Cached: 10.218.169.14/32 dev ens2f1
> Cached: 127.0.0.1/32 dev lo
> Cached: 172.168.1.1/32 dev b1
> Cached: 192.168.122.1/32 dev virbr0
> Cached: 172.168.1.0/24 dev b1
> Cached: 10.218.160.0/20 dev ens2f1
> Cached: 127.0.0.0/8 dev lo
> Cached: 0.0.0.0/0 dev ens2f1 GW 10.218.160.1
>
> afbc043c-ec1a-4050-a1c0-8f0b669f93e6
>     Bridge "b0"
>         Port "dpdk0"
>             Interface "dpdk0"
>                 type: dpdk
>         Port "gre0"
>             Interface "gre0"
>                 type: gre
>                 options: {local_ip="172.168.1.4", remote_ip="172.168.1.3"}
>         Port "b0"
>             Interface "b0"
>                 type: internal
>     Bridge "b1"
>         Port "dpdk1"
>             Interface "dpdk1"
>                 type: dpdk
>         Port "b1"
>             Interface "b1"
>                 type: internal
>
> [root at localhost utilities]# ./ovs-ofctl show b0
> OFPT_FEATURES_REPLY (xid=0x2): dpid:000000e0ed1fe4e8
> n_tables:254, n_buffers:256
> capabilities: FLOW_STATS TABLE_STATS PORT_STATS QUEUE_STATS ARP_MATCH_IP
> actions: output enqueue set_vlan_vid set_vlan_pcp strip_vlan mod_dl_src
> mod_dl_dst mod_nw_src mod_nw_dst mod_nw_tos mod_tp_src mod_tp_dst
>  1(dpdk0): addr:00:e0:ed:1f:e4:e8
>      config:     0
>      state:      0
>      current:    10GB-FD
>      supported:  100MB-FD 1GB-FD 10GB-FD FIBER AUTO_PAUSE
>      speed: 10000 Mbps now, 10000 Mbps max
>  2(gre0): addr:8e:f5:f5:95:ac:25
>      config:     0
>      state:      0
>      speed: 0 Mbps now, 0 Mbps max
>  LOCAL(b0): addr:00:e0:ed:1f:e4:e8
>      config:     PORT_DOWN
>      state:      LINK_DOWN
>      current:    10MB-FD COPPER
>      speed: 10 Mbps now, 0 Mbps max
> OFPT_GET_CONFIG_REPLY (xid=0x4): frags=normal miss_send_len=0
> [root at localhost utilities]# ./ovs-ofctl show b1
> OFPT_FEATURES_REPLY (xid=0x2): dpid:000000e0ed1fe4e9
> n_tables:254, n_buffers:256
> capabilities: FLOW_STATS TABLE_STATS PORT_STATS QUEUE_STATS ARP_MATCH_IP
> actions: output enqueue set_vlan_vid set_vlan_pcp strip_vlan mod_dl_src
> mod_dl_dst mod_nw_src mod_nw_dst mod_nw_tos mod_tp_src mod_tp_dst
>  1(dpdk1): addr:00:e0:ed:1f:e4:e9
>      config:     0
>      state:      0
>      current:    10GB-FD
>      supported:  100MB-FD 1GB-FD 10GB-FD FIBER AUTO_PAUSE
>      speed: 10000 Mbps now, 10000 Mbps max
>  LOCAL(b1): addr:00:e0:ed:1f:e4:e9
>      config:     0
>      state:      0
>      current:    10MB-FD COPPER
>      speed: 10 Mbps now, 0 Mbps max
> OFPT_GET_CONFIG_REPLY (xid=0x4): frags=normal miss_send_len=0
>
>
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>

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