I forgot this, thanks very much, it does work.
On Wed, Jan 19, 2011 at 11:18 AM, kk yap <[email protected]> wrote: > If you want that, you should not have > > ofm.buffer_id = htonl(-1); > > Put the buffer_id of the packet_in. > > Regards > KK > > On 18 January 2011 18:58, Kyle Wang <[email protected]> wrote: > > Hi KK, > > > > My experiment was based on the Mininet. I wanted to change the > destination > > MAC address of the packets of some input flow, and after that, send them > out > > from assigned out_port. The flow entry was added successfully in the > switch, > > and the following packets can be processed correctly. However, the 1st > > packet, which triggered the Packet_in_event to make NOX add corresponding > > flow entry, cannot be handled as I wanted, because when I captured from > the > > host connected to the assigned out_port, the destination MAC address of > the > > 1st packet was not modified, while others were correctly modified. > > > > On Wed, Jan 19, 2011 at 3:38 AM, kk yap <[email protected]> wrote: > >> > >> 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 <[email protected]> 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 > >> > [email protected] > >> > http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org > >> > > >> > > > _______________________________________________ > nox-dev mailing list > [email protected] > http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org >
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