I'd try removing the output action (set_action_output).
-- Murphy
On Mar 29, 2012, at 1:18 AM, 星言 墨虚 wrote:
> Hi all,
>
> Sorry to bother you.
>
> I am writing a nox module which used as a router. And I use openvswitch as
> switch to forward the packets.
> I add 2 queues to each port of openvswitch. And in nox, I use this code to
> install flow to flow table in openvswitch.
>
> // set up a new flow
> ofp_action_list act_list;
> ofp_action *act;
>
> act = new ofp_action();
> act->set_action_dl_addr(OFPAT_SET_DL_DST,
> ARPTable[RouteEntry.NextIPAddr]);
> act_list.action_list.push_back(*act);
> act = new ofp_action();
> act->set_action_output(RouteEntry.outPort, 0);
> act_list.action_list.push_back(*act);
> act = new ofp_action();
> if (flow.nw_proto == ip_::proto::UDP)
> act->set_action_enqueue(RouteEntry.outPort, 1);
> else
> act->set_action_enqueue(RouteEntry.outPort, 0);
> act_list.action_list.push_back(*act);
>
> // set up new flow
> boost::shared_array<uint8_t> of_raw;
> size_t size = sizeof(ofp_flow_mod)+act_list.mem_size();
> of_raw.reset(new uint8_t[size]);
>
> of_flow_mod ofm;
> ofm.header = openflow_pack::header(OFPT_FLOW_MOD, size);
> ofm.match = flow.get_exact_match();
> ofm.match.in_port = htons(ofm.match.in_port);
>
> ofm.cookie = htonl(0);
> ofm.command = htons(OFPFC_ADD);
> ofm.flags = htons(0);
> ofm.priority = htons(OFP_DEFAULT_PRIORITY);
> ofm.idle_timeout = htons(120);
> ofm.hard_timeout = htons(0);
> ofm.buffer_id = buffer_id;
>
> ofm.pack((ofp_flow_mod*) openflow_pack::get_pointer(of_raw));
>
> act_list.pack(openflow_pack::get_pointer(of_raw,sizeof(ofp_flow_mod)));
>
> lg.dbg("Install flow entry %s with %zu actions",
> flow.to_string().c_str(),
> act_list.action_list.size());
>
> send_openflow_command(datapath_id, of_raw, false);
>
> But question is when I ping from host(ip: 192.168.57.1) to terminal(ip:
> 10.0.0.2), openvswitch will forward the same packet twice or more.
> Is there something wrong with queue configuration or NOX?
>
> Thanks.
>
> -- Tony
