Hi Kyle,
It might help to explain "it seemed to be not work". Did NOX segfault
as a result? Was the a OpenFlow flow_mod sent? Was an error
received? What switch are you using? These would be useful
information.
Regards
KK
On 18 January 2011 04:15, Kyle Wang <ese.kylew...@gmail.com> wrote:
> Hi,
> how can I use function send_openflow_packet(const datapathid& datapath_id,
> uint32_t buffer_id, const ofp_action_header actions[], uint16_t
> actions_len, uint16_t in_port, bool block) to change the destination MAC
> address of the 1st packet of some flow, and then send this modified packet
> to the desired out_port ?
> I had tried using action_list to do this, but it seemed to be not work. The
> following is partial code.
> ofp_action_list ofpall;
> ofp_action *ofp1 = new ofp_action();
> ofp1->action_raw.reset(new uint8_t[sizeof(ofp_action_dl_addr)]);
> of_action_dl_addr oada;
> oada.type = OFPAT_SET_DL_DST;
> oada.len = sizeof(ofp_action_dl_addr);
> memcpy(oada.dl_addr, fns_server_attr.dl_src, ethernetaddr::LEN);
> oada.pack((ofp_action_dl_addr*)
> openflow_pack::get_header(ofp1->action_raw));
> ofpall.action_list.push_back(*ofp1);
> ofp_action *ofp2 = new ofp_action();
> ofp2->action_raw.reset(new uint8_t[sizeof(ofp_action_output)]);
> of_action_output oao;
> oao.type = OFPAT_OUTPUT;
> oao.len = sizeof(ofp_action_output);
> oao.port = fns_server_attr.in_port;
> oao.max_len = 0;
> oao.pack((ofp_action_output*)
> openflow_pack::get_header(ofp2->action_raw));
> ofpall.action_list.push_back(*ofp2);
> size_t size = sizeof(ofp_flow_mod) + ofpall.mem_size();
> boost::shared_array<uint8_t> of_raw(new uint8_t[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.wildcards = htonl(0);
> ofm.match.in_port = flow.in_port;
> ofm.command = OFPFC_ADD;
> ofm.buffer_id = htonl(-1);
> ofm.idle_timeout = htons(5);
> ofm.hard_timeout = htons(OFP_FLOW_PERMANENT);
> ofm.priority = htons(OFP_DEFAULT_PRIORITY);
> ofm.flags = htons(ofd_flow_mod_flags());
> ofm.pack((ofp_flow_mod*) openflow_pack::get_pointer(of_raw));
> ofpall.pack(openflow_pack::get_pointer(of_raw,
> sizeof(ofp_flow_mod)));
> send_openflow_command(pi.datapath_id, of_raw, true);
> if (buffer_id == UINT32_MAX) {
> send_openflow_packet(pi.datapath_id, *pi.get_buffer(),
> ofm.actions, ofpall.mem_size(),
> pi.in_port, true);
> } else {
> send_openflow_packet(pi.datapath_id, buffer_id,
> ofm.actions, ofpall.mem_size(),
> pi.in_port, true);
> }
>
>
> _______________________________________________
> nox-dev mailing list
> nox-dev@noxrepo.org
> http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
>
>
_______________________________________________
nox-dev mailing list
nox-dev@noxrepo.org
http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
