Brn master 20051115.click

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 //
 // 802.11b access point
 //
 
 // needs INTERFACE (interface for the ap), SSID (name of the network), CHANNEL (operating channel), BEACON_INTERVAL
 // (interval for sending beacons in milliseconds)
 // input[0] from device with decap and so on, only management frames ???? filtering necessary (only packets for me?)
 // output[0] to device without encap, settx and so on
 elementclass AccessPoint {
     DSR $DSR, INTERFACE $device, SSID $ssid, CHANNEL $channel, BEACON_INTERVAL $beacon_interval |
 
     AddressInfo(ether_address $device:eth);
     winfo :: WirelessInfo(SSID $ssid, BSSID ether_address, CHANNEL $channel, INTERVAL $beacon_interval);
     rates :: AvailableRates(DEFAULT 2 4 11 12 18 22);
 
     input[0]
     -> mgt_cl :: Classifier(0/00%f0, //assoc req
                             0/10%f0, //assoc resp
           0/40%f0, //probe req
           0/50%f0, //probe resp
           0/80%f0, //beacon
           0/a0%f0, //disassoc
           0/b0%f0, //disassoc
           );
 
     mgt_cl[0]
     //-> PrintWifi("assoc_req")
     //-> AssociationResponder(WIRELESS_INFO winfo, RT rates)
     -> BRNAssocResponder(DEBUG false, WIRELESS_INFO winfo, RT rates, AssocList client_lst)
     //-> PrintWifi("assoc_reply")
     -> [0]output;
 
     mgt_cl[1]
     //-> PrintWifi("assoc_resp")
     -> Discard;
 
     mgt_cl[2]
     -> BeaconSource(WIRELESS_INFO winfo, RT rates)
     -> [0]output;
 
     mgt_cl[3]
     //-> PrintWifi("probe_resp")
     -> Discard;
 
     mgt_cl[4]
     -> BeaconScanner(RT rates)
     -> Discard; 
 
     mgt_cl[5]
     //-> PrintWifi("disassoc")
     -> Discard;
 
     mgt_cl[6]
     //-> PrintWifi("auth")
     -> OpenAuthResponder(WIRELESS_INFO winfo)
     //-> PrintWifi("auth_reply")
     -> [0]output;
 }
 
 //
 // BRN Dynamic Source Routing
 //
 
 // input[0] - ethernet (802.3) frames from external nodes (no BRN protocol)
 // input[1] - BRN DSR packets from internal nodes
 // input[2] - failed transmission of a BRN DSR packet (broken link) from ds
 // [0]output - ethernet (802.3) frames to external nodes/clients or me (no BRN protocol)
 // [1]output - BRN DSR packets to internal nodes (BRN DSR protocol)
 elementclass DSR {$DEVICE_1, $DEVICE_2, $DEVICE_3 |
 
   //
   // definitions
   //
   rc :: BrnRouteCache(ACTIVE false, 
     DROP /* 1/20 = 5% */ 0, SLICE /* 100ms */ 0, TTL /* 4*100ms */4);
   lt :: BrnLinkTable(rc);
   id :: NodeIdentity($DEVICE_1, $DEVICE_2, $DEVICE_3, lt);
   brn_encap :: BRNEncap;
   dsr_decap :: DSRDecap(id, lt);
   dsr_encap :: DSREncap(id, lt);
   nb :: DstClassifier(id, client_lst);
   querier :: RouteQuerier(lt, dsr_encap, brn_encap, dsr_decap);
   req_forwarder :: RequestForwarder(id, lt, dsr_decap, dsr_encap, brn_encap, querier, client_lst);
   rep_forwarder :: ReplyForwarder(id, dsr_decap, querier, client_lst, dsr_encap, lt);
   src_forwarder :: SrcForwarder(id, client_lst, dsr_encap, dsr_decap, lt);
   err_forwarder :: ErrorForwarder(id, lt, client_lst, dsr_encap, dsr_decap, querier, brn_encap);
 
   // ------------------
   // external packets
   // ------------------
   input[0]
   //-> Print(XXXXX)
   -> clf_bcast :: Classifier(0/ffffffffffff, -); // broadcast & unicast packets
 
   clf_bcast[0]
   -> Discard;
 
   clf_bcast[1]
   //-> Print(from_ext_node)
   -> nb;
 
   nb[0] // packet is for me
   -> [0]output;
 
   nb[1] // packet for associated client (external)
   -> [0]output;
 
   nb[2] // packet for internal nodes
   //-> Print(dest_far_away)
   -> querier;
 
   querier[0]-> [1]output; // rreq packets (broadcast)
   querier[1]-> [0]src_forwarder; // src routed packets (unicast)
 
   src_forwarder[0]
   //-> Print(forward_packet)
   -> [1]output;
 
   src_forwarder[1]
   //-> Print(for_me_or_assoc_client)
   -> [0]output;
 
   // ------------------
   // internal packets
   // ------------------
   input[1]
   //-> $NB_LST // collect information about neighbors
   //-> NeighborList($NB_LST)
   -> dsrclf :: Classifier(6/01, //DSR_RREQ
                           6/02, //DSR_RREP
                           6/03, //DSR_RERR
                           6/04, //DSR_SRC
                           );
 
   dsrclf[0]
   //-> Print(rreq)
   -> req_forwarder[0]
   -> [1]output;
 
   req_forwarder[1]
   //-> BRNPrint(to_replier)
   -> [0]rep_forwarder
   -> [1]output;
 
   dsrclf[1]
   //-> Print(reply)
   -> [1]rep_forwarder;
 
   dsrclf[2]
   //-> Print(error)
   -> [1]err_forwarder
   -> [1]output;
 
   dsrclf[3]
   //-> Print(dsr_src)
   -> [1]src_forwarder;
 
   // ------------------
   // undeliverable packets
   // ------------------
   input[2]
   -> [0]err_forwarder;
 }
 
 //
 // BRN DHCP
 //
 
 // input  - broadcast packets (no arp, no brn)
 // output - dhcp packets (to wireless queue)
 elementclass DHCP {
 
   server :: DHCPServerLeases(10.9.0.1 , 10.9.0.0);
 
   input // check for dhcp
     //-> Print(Check_for_dhcp)
     -> EtherDecap()
     -> Align(4, 0)
     -> ip_check :: CheckIPHeader(CHECKSUM true)
     -> udp_check::CheckUDPHeader
     -> ipclass :: IPClassifier(icmp type echo-reply, -);
 
   ipclass[0]
     //-> Print("ICMP ECHO REPLY")
     -> [1]serverOffer :: DHCPServerOffer(server);
 
   ipclass[1]
     -> CheckDHCPMsg(request)
     -> class :: DHCPClassifier( discover, request, release, -);
 
   class[0]
     //-> Print(DISCOVER)
     -> [0]serverOffer;
 
   class[1]
     //-> Print(REQUEST)
     -> DHCPServerACKorNAK(server)
     -> UDPIPEncap( 10.9.0.1, 67, 255.255.255.255, 68 )
     -> EtherEncap( 0x0800, my_wlan, ff:ff:ff:ff:ff:ff)
     -> output;
 
   class[2]
     //-> Print(RELEASE)
     -> DHCPServerRelease(server);
 
   class[3]
     //-> Print(OTHER_drop)
     -> Discard;
 
   serverOffer[0]
     -> UDPIPEncap( 10.9.0.1, 67, 255.255.255.255, 68 )
     -> EtherEncap( 0x0800, my_wlan, ff:ff:ff:ff:ff:ff)
     -> output;
 
   serverOffer[1]
     -> icmpEncap::ICMPPingEncap(10.9.0.1, 255.255.255.255)
     -> DHCP_ICMP_Encap(serverOffer.dhcp_icmp_ping_src, serverOffer.dhcp_icmp_ping_dst)
     -> output;
 
   class[4] -> Discard();
   class[5] -> Discard();
   class[6] -> Discard();
   class[7] -> Discard();
   class[8] -> Discard();
 }
 
 
 out_q_0 :: Null(); //wifi_out_queue does the job
 
 // ----------------------------------------------------------------------------
 // Integration of DSR
 // ----------------------------------------------------------------------------
 
 AddressInfo(my_wlan ath0:eth);
 AddressInfo(my_vlan eth0:eth);
 //me :: NodeIdentity(my_wlan, my_vlan);
 nb_lst :: NeighborList(); // collect information about neighbors
 dsr :: DSR(ath0, eth0, eth0); // using DSR
 ds :: BRNDS(dsr/id, nb_lst);
 
 client_lst :: AssocList();
 client_ds :: ClientDS(ath0, eth0, vlan2, vlan0, client_lst);
 
 // ----------------------------------------------------------------------------
 // AP-Functionality
 // ----------------------------------------------------------------------------
 // TODO: BEACON_INTERVAL 100
 ap :: AccessPoint(DSR dsr, INTERFACE ath0, SSID ##brn2##, CHANNEL 1, BEACON_INTERVAL 100);
 
 // ----------------------------------------------------------------------------
 // Link Metric
 // ----------------------------------------------------------------------------
 
 //ett_metric :: BRNETTMetric(LT dsr/lt);
 etx_metric :: BRNETXMetric(LT dsr/lt);
 
 link_stat :: BRNLinkStat(ETHTYPE 0x0a04, 
         NODEIDENTITY dsr/id, 
         PERIOD 300 /* .3 sec */,
         TAU 30000,
         ##PROBES##,
         //ETT ett_metric,
         ETX etx_metric,
         RT ap/rates,
         LOGGING true);
 
 
 // ----------------------------------------------------------------------------
 // ARP-Table required for gateway functionality
 // ----------------------------------------------------------------------------
 arp :: ARPTable();
 
 // ----------------------------------------------------------------------------
 // Handling ath0-device
 // ----------------------------------------------------------------------------
 FromDevice(ath0) //, PROMISC true
   -> Prism2Decap()
   -> ExtraDecap()
   -> FilterPhyErr()
   -> filter :: FilterTX();
 
 filter[0]
   -> WifiDupeFilter()
   -> mgm_clf :: Classifier(0/00%0f, -); // management frames
 
 mgm_clf[0] //handle mgmt frames
   -> ap
   -> SetTXRate(22) // ap beacons send at constant bitrate
   -> wlan_out_queue :: NotifierQueue(50);
 
 mgm_clf[1] //handle other frames (data)
   -> WifiDecap()
   //-> rxstats :: RXStats()
   -> clf_bcast :: Classifier(0/ffffffffffff, -); // broadcast & unicast packets
 
   clf_bcast[0]
 //  -> ToDump(from.dat, ENCAP ETHER)
   -> arp_clf :: Classifier (12/0806, 12/8086, -);
 
 
 // ----------------------------------------------------------------------------
 // Handling DHCP queries
 // ----------------------------------------------------------------------------
 //TODO
 dhcp :: DHCP();
 arp_clf[2] // check for dhcp
 //-> Discard;
 //Idle()
   -> dhcp
   -> WifiEncap(0x02, WIRELESS_INFO ap/winfo) //to station
   -> SetTXRate(22) // currently bitrate with clients no adopted
   -> wlan_out_queue;
 
 clf_bcast[1]
   -> protoclf :: Classifier(12/8086, //brn-protocoll
                           -);
 arp_clf[0] -> Discard;
 
 arp_clf[1] // brn broadcasts
   -> protoclf;
 
 protoclf[1] //simple packets (no brn)
   //-> PrintWifi(from_dev)
   -> Classifier(12/0800) // ip packet
   -> host_cl :: IPClassifier(dst net 10.9.1.1 mask 255.255.255.0,
         -);
 
 host_cl[0] // for other brn clients or internal nodes
   -> [0]dsr;
 
 
 //AddressInfo(gw 00:0F:B5:3F:21:60);
 //AddressInfo(gw 00:0F:B5:3F:1B:BF);
 //AddressInfo(gw 00:0F:B5:3F:1E:EA);
 //AddressInfo(gw 00:0F:B5:3F:20:D6);
 
 host_cl[1] // packet for the outside world
   //-> Print(set_brn_gw)
   //-> BRNGateway(gw) // prefered gw
   -> [0]dsr;
 
 protoclf[0] //brn packets
   //-> Print(brn, 128)
   -> EtherDecap()
   -> nb_lst //know your neighbor
   -> brnclf :: Classifier(0/01, //BrnSDP
                           0/02, //BrnTFTP
                           0/03, //BrnDSR
                           0/04, //BrnBcast
                           0/06, //LinkProbe
                           -        //other
                           );
 
 brnclf[0] // sdp 
 -> Discard;
 
 brnclf[1] // tftp
 -> Discard;
 
 brnclf[2] //dsr
   -> [1]dsr;
 
 brnclf[3] //bcast
   -> Discard;
 
 brnclf[4] //linkprobe
   //-> Print(linkprobe)
   -> link_stat
   -> SetTimestamp()
   -> EtherEncap(0x8086, my_wlan, ff:ff:ff:ff:ff:ff)
   //-> Print(link_probe_to_dev)
   -> WifiEncap(0x00, 0:0:0:0:0:0) // packet to brn peer node
   -> wlan_out_queue;
 
 brnclf[5] //other
   -> Discard;
 
 //Idle()
 //-> [1]udt
 
 dsr[0] //for an assoc client
   //-> Print(from_dsr0)
   -> dst_clf :: DstClassifier(dsr/id, client_lst);
 
 //udt[0]
 //  -> Print(UDT_0)
 //  -> dst_clf;
 
 dst_clf[1] // for assoc client
   //-> Print(packet_assoc_client_raw)
   -> client_ds;
 
 client_ds[0]
   //-> Print(wireless_client)
   -> WifiEncap(0x02, WIRELESS_INFO ap/winfo) //to station
   -> SetTXRate(22) // no bitrate selection to client nodes!
   -> wlan_out_queue;
 
 client_ds[1]
   -> dev_eth0_q :: Queue
   -> dev_eth0 :: ToDevice(eth0); //eth0
 
 client_ds[2]
   -> Discard; //vlan2
 
 client_ds[3]
   -> Discard; //vlan0 (debug)
 
 dst_clf[0]
   //-> Print(packet_for_me)
   -> Classifier(12/0800) // ip packet
   -> CheckIPHeader(14)
   //-> IPPrint(xxx)
   -> tohost_cl :: IPClassifier(dst net 10.9.1.1 mask 255.255.255.0,
         -);
 
 dst_clf[2]
   //-> Print(Unknown)
   -> Discard;
 
 tohost_cl[0]
   //-> Print(to_ping)
   -> EtherDecap()
   -> CheckIPHeader
   -> ICMPPingResponder
   -> BRNEtherEncap
   //-> Print(ping_resp)
   -> [0]dsr; // back on route
 
 tohost_cl[1] // for the tun device
   //-> Print(ToHost)
 //  -> IPPrint(ToHost)
 //  -> ToHost(ath0);
   -> SetEtherAnno()
   -> MarkIPHeader(14)
   -> rewriter2 :: EtherIpAddrRewriter(ACTIVE false)
   //-> IPPrint(before) -> Print(before)
   -> dev_eth0_q;
 
 
 //  -> Print(to_tun)
 //  -> Strip(14)
 //  -> MarkIPHeader(0)
   //-> StoreIPEthernet(arp) // store ip mac combination
   //-> EtherDecap()
 //  -> CheckIPHeader(0)
 //  -> IPPrint(to_fake)
   // replace the real destination address with the fake address
 //  -> StoreIPAddress(192.168.3.22, 12) //src
 //  -> SetPacketType(HOST) 
 //  -> SetIPChecksum
 //  -> IPPrint(to_fake2)
 //  -> EtherEncap(0x0800, my_vlan, my_vlan)
 //  -> Print(to_fake2)
 //  -> ToHost(eth0);
 
 
 dsr[1] //for an other internal node; make use of ds
   //-> Print(from_dsr1)
   -> ds;
 ds[0] -> out_q_0;
 ds[1] -> Discard;
 ds[2] -> Discard;
 
 out_q_0
   -> WifiEncap(0x00, 0:0:0:0:0:0) // sollte das WDS Packet erzeugen mit Hilfe eines Parameters
   -> SetTXRate(22)
   -> wlan_out_queue
   //-> SetTXRate(22)
   -> SetTXPower(63)
   //-> PrintWifi(to_wlan)
   //-> ToDump(todev_node5, ENCAP 802_11)
   -> ExtraEncap()
   -> ToDevice(ath0);
 
 
 filter[1] //take a closer look at tx-annotated packets
   -> failures :: FilterFailures();
 
 failures[0]
   -> Discard;
 
 failures[1]
   -> WifiDupeFilter()
   -> mgm_clf2 :: Classifier(0/00%0f, -); // management frames
 
 mgm_clf2[0] //handle mgmt frames
   -> Discard;
 
 mgm_clf2[1] //other frames
   //-> PrintWifi(failure)
   -> WifiDecap()
   -> Classifier(12/8086) //handle only brn protocol
   //-> Print(failure)
   -> EtherDecap()
   -> [2]dsr;
 
 
 // ------------------------------------------------
 // Test Area
 // ------------------------------------------------
 
 AddressInfo(peer_client 00:11:11:3E:B8:79);
 
 chan_setter :: SetChannel(ath0);
 
 ch :: CompoundHandler( debug, "ds dsr/id dsr/lt dsr/dsr_encap
   dsr/brn_encap dsr/dsr_decap client_lst  nb_lst dsr/querier 
   dsr/req_forwarder dsr/rep_forwarder dsr/src_forwarder dsr/err_forwarder", false );
 
 poki :: PokeHandlers(//write client_lst.insert 00:0e:35:a2:e4:31 ath0, //associate client with node1
 //            write madwifi_rate.debug true,
 //            write dhcp/server.dhcpd_conf 
 //            subnet 10.9.1.0 netmask 255.255.255.0{
 //              option routers 10.9.1.1
 //              option subnet-mask 255.255.255.0
 //              option domain-name brn
 //              option domain-name-servers 141.20.20.50
 //              range dynamic-bootp 10.9.1.2 10.9.1.30
 //              default-lease-time 3000
 //              max-lease-time 6000
 //            },
             wait 1,
 //            read dhcp/server.read_free_leases,
 //            write dsr/querier.fixed_route
 //              00:0f:b5:3f:21:60
 //              00:0f:b5:3f:20:d6
 //              00:0f:b5:3f:1e:ea
 //              00:0f:b5:0b:95:29
 //              00:0f:b5:3f:1b:bf
 //              00:0e:35:a2:e4:31
             );
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