Hi Andrea--
If you're wildcarding the dl_type, then you can't match on an IP address. You
could try setting dl_type to 0x800.
-Dan
On Wednesday, March 14, 2012 at 6:42 AM, andrea simeoni wrote:
> Hi guys,
>
> I have a network with a single switch, and I wish to flood all traffic coming
> from the IP "10.0.0.2". I'm trying to install a flow that is wildcarded for
> each entry made exception for the network src address 10.0.0.2. To this aim I
> wrote the following code:
>
> ofp_action_list act_list;
> ofp_action* normal_action = new ofp_action();
> normal_action->set_action_output(OFPP_FLOOD,0);
> act_list.action_list.push_back(*normal_action);
>
> datapathid dpid=datapathid::from_host(1);
>
> ofp_match tmpmatch;
> tmpmatch.wildcards=OFPFW_IN_PORT|OFPFW_DL_VLAN|OFPFW_DL_SRC|OFPFW_DL_DST|
> OFPFW_DL_TYPE|
> OFPFW_NW_PROTO|OFPFW_TP_SRC|OFPFW_TP_DST|0|OFPFW_NW_DST_ALL|
> OFPFW_DL_VLAN_PCP|OFPFW_NW_TOS;
>
> ipaddr sip("10.0.0.2");
> tmpmatch.nw_src=(uint32_t)sip;
>
> ssize_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.cookie = 0;
> ofm.command = OFPFC_ADD;
> ofm.flags = ofd_flow_mod_flags();
> memcpy(&ofm.match, &tmpmatch, sizeof(ofp_match));
> ofm.idle_timeout = 50;
> ofm.hard_timeout = 0;
> ofm.buffer_id = 0;
> ofm.out_port = OFPP_NONE;
>
>
> ofm.pack((ofp_flow_mod*) openflow_pack::get_pointer(of_raw));
> act_list.pack(openflow_pack::get_pointer(of_raw,sizeof(ofp_flow_mod)));
> send_openflow_command(dpid, of_raw, false);
>
> If I run my code, and try launch dpctl in Mininet I obtain:
>
> flags=none type=1(flow)
> cookie=0, duration_sec=4s, duration_nsec=638000000s, table_id=1,
> priority=32768, n_packets=0, n_bytes=0,
> idle_timeout=50,hard_timeout=0,actions=output:2
>
>
> If i try to make pings, I get that no host can communicate each other; but
> what I want to obtain, is that the host "10.0.0.2" is able to communicate
> with the host on port 2 (in my case 10.0.0.3).
>
> There is someone that explains me how setup flows on wildcards fields?
>
> Thank you
>
> --
> Andrea Simeoni
