diff --git a/bin/gen_v4_table_test_entries.py b/bin/gen_v4_table_test_entries.py index 3e7ac6c..6238cf9 100644 --- a/bin/gen_v4_table_test_entries.py +++ b/bin/gen_v4_table_test_entries.py @@ -6,5 +6,6 @@ for i in range(1,65): addr = ipaddress.IPv4Address("10.0.0.{}".format(i)) ip_int = int(addr) -# print("table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port {} => 1 {} {} 0 0".format(ip_int, i, i)) - print("table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port {} => {} {} 0 0 0".format(ip_int, i, i)) + print("table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port {} => 1 {} {} 0 0".format(ip_int, i, i)) +# print("table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port {} => {} {} 0 0 0".format(ip_int, i, i)) +# print("table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port {} => {} {} {} 0 0".format(ip_int, i, i)) diff --git a/doc/plan.org b/doc/plan.org index 092ae1e..ea20ff5 100644 --- a/doc/plan.org +++ b/doc/plan.org @@ -7279,11 +7279,11 @@ nf_port_map = { - esprimo either nf0 & nf1 - or esprimo nf2 & nf3 -| port 0 | 1 | eth1@ nsg ?! likely: esprimo enp2s0f0 | | -| port 1 | 4 | likely: esprimo enp2s0f1 | | -| port 2 | 16 | not connected likely | | -| port 3 | 64 | eth1 @ nsg | PROBALY NOT, probably 1! | -| | | | | +| port 0 | 0b00000001 | 1 | eth1@ nsg ?! likely: esprimo enp2s0f0 | | +| port 1 | 0b00000100 | 4 | likely: esprimo enp2s0f1 | | +| port 2 | 0b00010000 | 16 | not connected likely | | +| port 3 | 0b01000000 | 64 | eth1 @ nsg | PROBALY NOT, probably 1! | +| | | | | | *** DONE 2019-07-28: testing with port = 64 (first or last in theory): LAST! WORKS! CLOSED: [2019-07-28 Sun 13:19] @@ -7464,8 +7464,8 @@ success #+END_CENTER - -*** TODO 2019-07-28: trying all ports with ipv4 +*** DONE 2019-07-28: trying all ports with ipv4: no result from nmap -sP 10.0.0.1 + CLOSED: [2019-07-28 Sun 19:01] #+BEGIN_CENTER [16:26] line:bin% python3 gen_v4_table_test_entries.py table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772161 => 1 1 1 0 0 @@ -7611,8 +7611,8 @@ table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772224 => also does not work/add packets - -*** TODO 2019-07-28: Bit / byte order issues? +*** DONE 2019-07-28: Bit / byte order issues? -> not reacting + CLOSED: [2019-07-28 Sun 19:01] #+BEGIN_CENTER >> table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 16777226 => 1 1 1 0 0 fields = [(u'hit', 1), (u'action_run', 3), (u'out_port', 8), (u'out_port', 8), (u'mac_addr', 48), (u'task', 16), (u'table_id', 16)] @@ -7749,6 +7749,236 @@ nico@nsg-System:~$ #+END_CENTER +*** DONE 2019-07-28: compile time around 2.5h + CLOSED: [2019-07-28 Sun 19:37] + + + +*** DONE 2019-07-28: direct loading works / no 2nd reboot necessary + CLOSED: [2019-07-28 Sun 19:50] +#+BEGIN_CENTER +nico@nsg-System:~/master-thesis$ ./bin/build-load-drivers.sh ++ cd /home/nico/projects/P4-NetFPGA/lib/sw/std/driver/sume_riffa_v1_0_0 ++ sudo modprobe -r sume_riffa ++ make clean +make -C /lib/modules/4.15.0-55-generic/build M=/home/nico/projects/P4-NetFPGA/lib/sw/std/driver/sume_riffa_v1_0_0 clean +make[1]: Entering directory '/usr/src/linux-headers-4.15.0-55-generic' + CLEAN /home/nico/projects/P4-NetFPGA/lib/sw/std/driver/sume_riffa_v1_0_0/.tmp_versions + CLEAN /home/nico/projects/P4-NetFPGA/lib/sw/std/driver/sume_riffa_v1_0_0/Module.symvers +make[1]: Leaving directory '/usr/src/linux-headers-4.15.0-55-generic' ++ make all +make -C /lib/modules/4.15.0-55-generic/build M=/home/nico/projects/P4-NetFPGA/lib/sw/std/driver/sume_riffa_v1_0_0 modules +make[1]: Entering directory '/usr/src/linux-headers-4.15.0-55-generic' + CC [M] /home/nico/projects/P4-NetFPGA/lib/sw/std/driver/sume_riffa_v1_0_0/sume_riffa.o + Building modules, stage 2. + MODPOST 1 modules + CC /home/nico/projects/P4-NetFPGA/lib/sw/std/driver/sume_riffa_v1_0_0/sume_riffa.mod.o + LD [M] /home/nico/projects/P4-NetFPGA/lib/sw/std/driver/sume_riffa_v1_0_0/sume_riffa.ko +make[1]: Leaving directory '/usr/src/linux-headers-4.15.0-55-generic' ++ sudo make install +make -C /lib/modules/4.15.0-55-generic/build M=/home/nico/projects/P4-NetFPGA/lib/sw/std/driver/sume_riffa_v1_0_0 modules +make[1]: Entering directory '/usr/src/linux-headers-4.15.0-55-generic' + Building modules, stage 2. + MODPOST 1 modules +make[1]: Leaving directory '/usr/src/linux-headers-4.15.0-55-generic' +install -o root -g root -m 0755 -d /lib/modules/4.15.0-55-generic/extra/sume_riffa/ +install -o root -g root -m 0755 sume_riffa.ko /lib/modules/4.15.0-55-generic/extra/sume_riffa/ +depmod -a 4.15.0-55-generic ++ sudo modprobe sume_riffa ++ lsmod ++ grep sume_riffa +sume_riffa 28672 0 +nico@nsg-System:~/master-thesis$ ip l +1: lo: mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 + link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 +2: eth0: mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000 + link/ether 74:d0:2b:98:38:f6 brd ff:ff:ff:ff:ff:ff +3: eth1: mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 + link/ether f8:f2:1e:41:44:9c brd ff:ff:ff:ff:ff:ff +4: eth2: mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 + link/ether f8:f2:1e:41:44:9d brd ff:ff:ff:ff:ff:ff +5: wg0: mtu 1420 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 + link/none +6: nf0: mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 + link/ether 02:53:55:4d:45:00 brd ff:ff:ff:ff:ff:ff +7: nf1: mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 + link/ether 02:53:55:4d:45:01 brd ff:ff:ff:ff:ff:ff +8: nf2: mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 + link/ether 02:53:55:4d:45:02 brd ff:ff:ff:ff:ff:ff +9: nf3: mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 + link/ether 02:53:55:4d:45:03 brd ff:ff:ff:ff:ff:ff +nico@nsg-System:~/master-thesis$ + +#+END_CENTER + +*** TODO 2019-07-28: v4_networks only test [v6.9]: set_egress_port(4) => does not exit anywhere; table for port1 does not work? +#+BEGIN_CENTER +>> list_cam_tables +---------------------- +realmain_v4_networks_0 : +---------------------- +{u'action_ids': {u'.NoAction': 6, + u'TopPipe.realmain.controller_debug': 3, + u'TopPipe.realmain.controller_debug_table_id': 5, + u'TopPipe.realmain.controller_reply': 4, + u'TopPipe.realmain.set_egress_port': 1, + u'TopPipe.realmain.set_egress_port_and_mac': 2}, + u'annotations': {u'Xilinx_ExternallyConnected': [u'0'], + u'Xilinx_LookupEngineType': [u'EM'], + u'name': [u'TopPipe.realmain.v4_networks']}, + u'match_type': u'EM', + u'p4_name': u'realmain_v4_networks_0', + u'px_class': u'LookupEngine', + u'px_name': u'realmain_v4_networks_0', + u'px_type_name': u'realmain_v4_networks_0_t', + u'request_fields': [{u'p4_name': u'hdr.ipv4.dst_addr', + u'px_name': u'lookup_request_key', + u'size': 32, + u'type': u'bits'}], + u'response_fields': [{u'px_name': u'hit', u'size': 1, u'type': u'bits'}, + {u'px_name': u'action_run', + u'size': 3, + u'type': u'bits'}, + {u'fields': [{u'px_name': u'out_port', + u'size': 8, + u'type': u'bits'}], + u'p4_action': u'TopPipe.realmain.set_egress_port', + u'px_name': u'realmain_set_egress_port', + u'type': u'struct'}, + {u'fields': [{u'px_name': u'out_port', + u'size': 8, + u'type': u'bits'}, + {u'px_name': u'mac_addr', + u'size': 48, + u'type': u'bits'}], + u'p4_action': u'TopPipe.realmain.set_egress_port_and_mac', + u'px_name': u'realmain_set_egress_port_and_mac', + u'type': u'struct'}, + {u'fields': [{u'px_name': u'task', + u'size': 16, + u'type': u'bits'}], + u'p4_action': u'TopPipe.realmain.controller_reply', + u'px_name': u'realmain_controller_reply', + u'type': u'struct'}, + {u'fields': [{u'px_name': u'table_id', + u'size': 16, + u'type': u'bits'}], + u'p4_action': u'TopPipe.realmain.controller_debug_table_id', + u'px_name': u'realmain_controller_debug_table_id', + u'type': u'struct'}]} +>> + +#+END_CENTER + +Adding rule for port1: + +#+BEGIN_CENTER +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772161 => 1 1 1 0 0 + +nico@ESPRIMO-P956:~$ sudo ip neighbor add 10.0.0.1 lladdr f8:f2:1e:41:44:9c dev enp2s0f0 +nico@ESPRIMO-P956:~/master-thesis/bin$ sudo ip addr add 10.0.0.200/24 dev enp2s0f1 +nico@ESPRIMO-P956:~/master-thesis/bin$ sudo ip neighbor del 10.0.0.1 dev enp2s0f1 +nico@ESPRIMO-P956:~/master-thesis/bin$ sudo ip neighbor del 10.0.0.1 dev enp2s0f0 +nico@ESPRIMO-P956:~/master-thesis/bin$ sudo ip neighbor add 10.0.0.1 lladdr f8:f2:1e:41:44:9c dev enp2s0f0 +! +#+END_CENTER + +Trying all 64 possibilities: + +#+BEGIN_CENTER +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772161 => 1 1 1 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772162 => 1 2 2 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772163 => 1 3 3 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772164 => 1 4 4 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772165 => 1 5 5 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772166 => 1 6 6 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772167 => 1 7 7 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772168 => 1 8 8 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772169 => 1 9 9 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772170 => 1 10 10 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772171 => 1 11 11 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772172 => 1 12 12 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772173 => 1 13 13 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772174 => 1 14 14 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772175 => 1 15 15 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772176 => 1 16 16 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772177 => 1 17 17 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772178 => 1 18 18 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772179 => 1 19 19 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772180 => 1 20 20 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772181 => 1 21 21 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772182 => 1 22 22 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772183 => 1 23 23 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772184 => 1 24 24 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772185 => 1 25 25 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772186 => 1 26 26 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772187 => 1 27 27 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772188 => 1 28 28 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772189 => 1 29 29 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772190 => 1 30 30 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772191 => 1 31 31 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772192 => 1 32 32 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772193 => 1 33 33 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772194 => 1 34 34 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772195 => 1 35 35 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772196 => 1 36 36 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772197 => 1 37 37 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772198 => 1 38 38 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772199 => 1 39 39 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772200 => 1 40 40 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772201 => 1 41 41 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772202 => 1 42 42 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772203 => 1 43 43 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772204 => 1 44 44 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772205 => 1 45 45 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772206 => 1 46 46 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772207 => 1 47 47 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772208 => 1 48 48 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772209 => 1 49 49 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772210 => 1 50 50 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772211 => 1 51 51 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772212 => 1 52 52 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772213 => 1 53 53 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772214 => 1 54 54 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772215 => 1 55 55 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772216 => 1 56 56 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772217 => 1 57 57 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772218 => 1 58 58 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772219 => 1 59 59 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772220 => 1 60 60 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772221 => 1 61 61 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772222 => 1 62 62 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772223 => 1 63 63 0 0 +table_cam_add_entry realmain_v4_networks_0 realmain.set_egress_port 167772224 => 1 64 64 0 0 + +#+END_CENTER + +nmap -sP does not show any packet on any other device: + +#+BEGIN_CENTER +nico@ESPRIMO-P956:~/master-thesis/bin$ nmap -sP 10.0.0.0/24 +Starting Nmap 7.01 ( https://nmap.org ) at 2019-07-28 20:00 CEST +Nmap scan report for ict-networks-010-000-000-200.fwd-v4.ethz.ch (10.0.0.200) +Host is up (0.00014s latency). +Nmap done: 256 IP addresses (1 host up) scanned in 23.56 seconds +nico@ESPRIMO-P956:~/master-thesis/bin$ + +20:00:35.114277 IP 10.0.0.200.44382 > 10.0.0.12.443: Flags [S], seq 1173914110, win 29200, options [mss 1460,sackOK,TS val 4138 +412163 ecr 0,nop,wscale 7], length 0 +20:00:35.114327 IP 10.0.0.200.34958 > 10.0.0.26.443: Flags [S], seq 3327394542, win 29200, options [mss 1460,sackOK,TS val 3323 +367618 ecr 0,nop,wscale 7], length 0 + +#+END_CENTER + +packets are going out though. + +Also trying with ping: + +#+BEGIN_CENTER +nico@ESPRIMO-P956:~/master-thesis/bin$ for i in $(seq 1 64); do (ping -c1 10.0.0.$i & ); done + +#+END_CENTER + ** The NetPFGA saga Problems encountered: - The logfile for a compile run is 10k+ lines diff --git a/p4src/actions_nat64_generic.p4 b/p4src/actions_nat64_generic.p4 index d697d88..fc9c56e 100644 --- a/p4src/actions_nat64_generic.p4 +++ b/p4src/actions_nat64_generic.p4 @@ -128,8 +128,8 @@ action nat46_icmp_generic() hdr.icmp.setInvalid(); } - /* NAT46: protocol unspecific changes */ - action nat46_generic(ipv6_addr_t src, ipv6_addr_t dst) { +/* NAT46: protocol unspecific changes */ +action nat46_generic(ipv6_addr_t src, ipv6_addr_t dst) { hdr.ipv6.setValid(); hdr.ipv4.setInvalid(); @@ -171,7 +171,6 @@ action nat46_icmp_generic() NoAction; } size = NAT64_TABLE_SIZE; -// default_action = controller_debug_table_id(TABLE_NAT64); default_action = NoAction; } diff --git a/p4src/minip4_solution.p4 b/p4src/minip4_solution.p4 index e8399a0..d098eea 100644 --- a/p4src/minip4_solution.p4 +++ b/p4src/minip4_solution.p4 @@ -58,20 +58,17 @@ control RealMain( #include "actions_egress.p4" #include "actions_delta_checksum.p4" + + #include "netpfga_dummy.p4" + apply { bit<17> tmp17 = 0; - bool apply_v4networks = true; - bool apply_v6networks = true; - // #include "netpfga_nat64.p4" + /* does not compile without a table - give it a table */ + dummy_table_for_netpfga.apply(); -// if(apply_v4networks == true) { - v4_networks.apply(); -// } - -// if(apply_v6networks == true) { -// v6_networks.apply(); -// } + /* continue without tables */ + #include "netpfga_nat64_stupid_hardcoded.p4" } } diff --git a/p4src/netpfga.p4 b/p4src/netpfga.p4 index 21c1570..12a043c 100644 --- a/p4src/netpfga.p4 +++ b/p4src/netpfga.p4 @@ -1,14 +1,6 @@ #ifndef DUMMY_NETPFGA #define DUMMY_NETPFGA -action do_nothing() { - ; -} - -action send_to_port(port_t port) { - sume_metadata.dst_port = port; -} - action send_to_port1() { sume_metadata.dst_port = 1; } @@ -19,12 +11,9 @@ table dummy_table_for_netpfga { } actions = { - do_nothing; send_to_port1; - send_to_port; } - size = TEST_TABLE_SIZE; -// default_action = do_nothing; + size = 64; default_action = send_to_port1; } diff --git a/p4src/netpfga_nat64_stupid_hardcoded.p4 b/p4src/netpfga_nat64_stupid_hardcoded.p4 new file mode 100644 index 0000000..b60b80c --- /dev/null +++ b/p4src/netpfga_nat64_stupid_hardcoded.p4 @@ -0,0 +1,46 @@ +port_t v6_out = 64; +port_t v4_out = 16; + +/* nat64 */ +/* +>>> int(ipaddress.IPv4Address("10.0.0.0")) +167772160 +>>> int(ipaddress.IPv6Address("2001:db8:42::")) +42540766411362381960998550477184434176 +*/ + +ipv6_addr_t v6_src = 42540766411362381960998550477184434176; /* 2001:db8:42:: -> v6 source range*/ +ipv6_addr_t v6_dst = 42540766411362381960998550477184434176; /* 2001:db8:42:: -> v6 source range*/ +ipv6_addr_t nat64_prefix = 42540766411362381960998550477184434176; /* 2001:db8:42:: -> v6 destination range */ +ipv4_addr_t v4_dst = 167772160; /* 10.0.0.0 -> v4 destination range */ + + +/* if it is ipv6, we always translate to IPv4 and output on v4_out */ +if(hdr.ipv6.isValid()) { + nat64_static(v6_src, v4_dst, nat64_prefix); + + if(hdr.udp.isValid()) { + delta_udp_from_v6_to_v4 + } + + if(hdr.tcp.isValid()) { + delta_tcp_from_v6_to_v4 + } + + set_egress_port(v4_out); + +} else if(hdr.ipv4.isValid()) { + nat46_static(v6_dst, v4_dst, nat64_prefix); + + if(hdr.udp.isValid()) { + delta_udp_from_v4_to_v6 + } + + if(hdr.tcp.isValid()) { + delta_tcp_from_v4_to_v6 + } + + set_egress_port(v6_out); +} else { + set_egress_port(1); +} \ No newline at end of file