master-thesis/doc/plan.org at 4d0c4f3df012cbb6d9b5240128987ee8216d038a

Nico Schottelius 8b8f70e6a0 Begin to introduce commented out code, use metadata

2019-06-24 13:05:42 +02:00

270 KiB

Raw Blame History

Time table / log
Thesis implementation
Thesis documentation
Initial administration

Time table / log

When?	What?	Notes
2019-02-21	Kick-Off	x
	Finish all admin points	x
	Know when/how to coordinate	x
2019-02-21	Clarifications Ueli Maurer (Mentor)	x
	Write mail / phone	x
2019-02-22	Have all papers handed in
2019-02-22	Have rough definition of tasks	x
2019-02-23	python2 / ipaddress is buggy	x
	p4utils is python2 only support
	bmpy_utils is not installable with pip
	python2 / latest ipaddress==1.0.22 still has the bug
	ipaddress.ip_network("2001:db8:61::/64")
	IPv6Network(u'3230:3031:3a64:6238:3a36:313a:3a2f:3634/128')
	egress routing	x
2019-02-24	non reliable neighbor entries / flushing addresses puts into failed
2019-02-28	Meet Laurent #2
	- Status
	* Setup base code
	* Parser for all protocols (udp,tcp,icmp,icmp6)
	* Started with icmp translation
	* Investigating into IPv6 based checksums
	* Reading into various RFCs, NDP, MLD
	* Reading about multicast / trying to figure out dynamic membership
	- Challenges
	* Some issues with python2 (ipaddr) - slowing down	x
	https://github.com/phihag/ipaddress/issues/46
	* Forwarded and received icmp6 packets are not "accepted"
	- Questions
	* Multicast: in controller	x
	* Re-using code (lee howard) -> ok & mention	x
	* A lot of redundant code / different tables / repeating: use if's	x
	* 65k parsing is insane	x
	- Next steps:
	* Supporting MLD
	* Save stuff in the controller
	* checkout ipaddr bug / status
	* Variable length / icmp6 in the controller
	* Go simple…
	* Meeting Edgar & Alexander week after
	* Summary on Slack
	* 1130 meeting now
2019-03-01	Feature list / priority list / roadmap clear	x
	Joining P4 Slack
2019-03-03	icmp6 revised:
	- add address to table for forwarding to controller	x
	- select correct format for forwarding
	- decode in controller
	- send back to switch
	- test with host
2019-03-06	Meet Laurent #3
	- Checksum's in scapy	x
	- Python2 ipaddress fix (import future)	x
	- Added custom package format / additional information in packet	x
	- (partial) NDP working in controller	x
	- P4 checksum_with_payload	x
	- Reading scapy / inet6	x
	- Further checksum tests -> required everywhere in IPv6	x
	- icmp6 echo request working in controller	x
	- Hosts can ping6 the switch	x
	- Ran into P4 casting bug: https://github.com/p4lang/p4c/issues/1765	x
	-> seems to be more than just casting bug	x
	- Default route for ipv6 hosts	x
	Next target:
	- Focus on enabling the "Internet" with ICMP6 translation	x
	Next steps:
	- Investigate again into checksumming with payload in P4	x
	- Answering icmp6 echo request in in the switch	x
	- Translate icmp6 to icmp	x
	- Translate icmp to icmp6
	- Multiple branches:	x
	* Work on checksumming / p4	x
	* Work on metadata passing / p4	x
	* Work on static mapping (w/ incorrect checksum) 1:1
	* v1model/
	Notes:
	* Edgar back on Friday // check tofino checksumming
	* Bugs mentioning in thesis
	* Maybe run static mapping on tofino / p4_14
	* Tofino p4_16: alpha compiler
	* Send recap / mail next week
	* week after 1130 Thursday
2019-03-07	ICMP6 checksumming works!!!	x
	-> more fields needed to be included!
2019-03-13	Tried/trying to get vagrant VM or P4* running on the notebook
2019-03-14	NAT64 static rewrite	x
	- table support
	- checksum not yet ported for translations
	- how to get mask from lpm table match?
	- how to get network from lpm match?
	- Create p4lang/p4-spec bug
	https://github.com/p4lang/p4-spec/issues/745
2019-03-21	Meet Laurent #4 - post poned - sick	x
	https://github.com/p4lang/p4-spec/issues/660 sizeof() missing
	- Need to introduce new headers
	- Might need deeper parsing for icmp6_ns
	- Need hwaddr in icmp6_na
	- Need to find out how to handle imcp6 options after target address
2019-03-23	Parsing down to link layer option	x
	Parsing on wrong field detected by unset fields in wireshark
	Correcting parser->leads to incorrect checksum
	- NDP is answered to, but icmp6 echo request isn't -> extend table
	Problem with multiple LPM keys in table
	- logical problem, overlapping length matches
	- priority / ordering would be helpful
2019-03-25		x
	Writing down double LPM problem
	Removing source network support, documenting limitation
	Rewriting code to use multiple NAT64 destinations
	New test.py v6_static_mapping tests
	Again checksum errors in NDP answer
	Added debug code to send table ID towards controller
2019-03-26		x
	Find out where packet is stuck
2019-03-27
	switch cannot be used in actions!
	Refactor program to use multiple tables instead of switch
	Ethernet frame check sequence error
2019-03-28	Meet Laurent #4
	- Router solicitation for finding router on startup
	- test.py for TDD
	- Parsing icmp6 is not enough - one layer deeper
	- No LPM priorities
	- if/switch action logic
	- partial translation working to IPv4
	- Focus on checksumming work (again)
	Notes:
	- Later using ternary matching
	- Document (nested) if's in action (in thesis)
	- SW and HW Targets Tofino [Albert, Thomas]
	- P414/P416 for Tofino?
	- Barefoot support/question: Ticket/Support System
	- Can try P416 compiler
	- Next week Laurent not around: send email + Albert/Thomas/Edgar meeting
2019-03-30
	Refactoring code
	Hitting expression bug
	Translating TO icmp4 works!
2019-04-02
	ARP egress support
2019-04-03
	ARP corrections – ARP working for the switch!	x
	ICMP w/ incorrect checksum	x
	ICMP w/ correct checksum - PING REPLIES!!!	x
	Next: check / verify / translate nat46
2019-04-04
	Report [no meeting w/ Laurent]
	Added arp handling
	Added icmp handling
	Need to setup hardware addresses -> in theor resolution -> hardcoded atm
2019-04-04	NAT64 1:1 table ICMP, ICMPv6 working	x
	Will need some switch local ip addresses	x
2019-04-11	PLAN: NAT64 1:1 table UDP working
	checksums in both directions
2019-04-11
	Meeting Laurent
	Status:
	- Minimal ARP working (for the switch address)
	- echo ping/request icmp<->icmp6 working
	- udp_v6->udp_v4 working
	- tcp_v6->tcp_v4 working
	- udp_v4->udp_v6 working
	- tcp_v4->udp_v6 working
	Next steps:
	- Hardware
	- icmp++
	- pmtu
	- sessions main step
	Notes:
	- broadcast link only
	- About 2w delivery time
	- Get in touch with Tobias
	- Scalability analysis -> how many connections/connections/s
	- Forwarding information in tables
	- Hendrik: semester thesis / NetPFGA
	- Tobias: advising Hendrik / Netpfga
2019-04-18	PLAN: NAT64 1:1 table TCP/UDP working	x
2019-04-23
	Meet Laurent
	General
	- Get a better understanding of what others did
	Review docs / specs
	- Jool EAMT/SIIT fully
	- IPv4 embedding
	* Motivation/objective: working with real world DNS64
	* RFC6052 suffix support
	* RFC4291 IPv4-Compatible IPv6 Address (16 0s)
	* RFC4291 IPv4-Mapped IPv6 Address (16 1s)
	- Session handling
	* RFC6145: Translation ip/icmp, obsoleted by RFC 7915
	* RFC6146: NAT64 definition, only TCP, UDP, and ICMP traffic
	* RFC6052: embedding support
	* Mode: IPv6 outgoing -> "masquarading"
	* Mode: IPv4
	- Translation details
	* How to handle ICMP4->icmp6 correctly (RFC7915)
	- Hardware
	* NetFPGA
	* Hardware machine for software comparison?
	New todos:
	- Translate fragment header
	- Support MTU / packet too big
	- Support PMTU, tcp mss
	Meeting notes
	- difference based
	- first physical access
	- tofino: if it compiles -> line rate
	- chaining switches / OS -> single port rate
	- netpfga
	- reason about what in hardware and what in software -> reason tradeoff	!!!
	- table gets full
	Follow up:
	- what's the MTU of an interface? have a table
	- have port/mtu
	- total packeth length -> from IP
	- tables not in data plane
	- Meeting Hendrik
	- Meeting Kamila
	- 768k
2019-05-02	Jool SIIT / range / offset support https://www.jool.mx/en/run-vanilla.html	x
	Jool EAMT support https://www.jool.mx/en/run-eam.html
	Bidirectional support
	Will need IPv6 embedding suport https://tools.ietf.org/html/rfc6052
2019-04-18	NAT64 prefix based IPv6->IPv4 conversion [tayga]
	Use case: IPv6 hosts send to specific /96
2019-05-23	NAT64 dynamic pool implementation: n:1 ipv6 to ipv4 mapping
	And n:1 stateful mappings https://www.jool.mx/en/run-nat64.html
	Needs active controller
	Needs timeout / leases
	Might work w/ registers
2019-06-16
	Laurent meeting
	- Vivado installation: silent errors, infinite loop, missing libncurses5
	- Compiling netfpga: 82k lines of code that are interdependent
	- Many non critical error messages on the way
	- Zero exit fatal errors
	- Code is not persistent in flash -> not there after power down
	- Not Receiving
	- tcpdump on local nfX doesn't work -> can only debug on other endpoint
	- Writing tables fails
	- Output all ports -> unclear how test data should look like
	- Found out broad/multicasting in theory -> bitmask
	- HW test
	* compiling for 3 days
	* Execution fails due to missing djtgcfg
	Payload to control plane
	- digest not possible due to missing
	- might work with working
	Next steps:
	- Debug ioctl errors when writing table entries
	- Understand HDL or PX user engines for writing checksum part
	- Adjust controller to digest
	HDL notes
	- cycle limitations
	- variable length might be a problem
	Next steps after discussion:
	- checkout ipv6 test on netpfga / modify v6 packet
	- checkout whether diff is possible on checksum -> see ttl
	- checkout externs of Hendrik / report
	- Asses checksum difficulty
	Handing in thesis:
	- Email pdf
	- code on github
	- tar.gz of the code
	- Decleration of -> from tobias
	- Week after: presentation
	- 15m talk
	- 15m q&a
2019-06-24
	Laurent meeting
	Checksums
	- 16 bit sum of fields, later one/two complement
	- various implementations
	- is a sum -> commutative law
	- overflow (delta > payload) handling unclear
	Netpfga
	- Old one had several failure messages (one in DDR area)
	- New one: tables can be written
	- Need 3 ports: v4, v6, management
	Next steps:
	- Test checksums delta on software switch
	- Begin to port code to netpfga one-by-one
	Follow up notes:
	- Checkout Hendrik thesis / right / left shift
	- Fix computer in lab
2019-06-27
	Target Hardware: code running
2019-07-11
	Integrated org-documentation into latex / export working
	https://bastibe.de/2014-09-23-org-cite.html
	http://viveks.info/org-mode-academic-writing-bibliographies-org-ref/
	https://github.com/jkitchin/org-ref
2019-07-25	Benmarking results between P4, Jool, Tayga
	Real hardware of advantage
2019-08-01	Latest start writing documentation
2019-08-21	hand in thesis

Thesis implementation

DONE Setup test VM for P4: 2a0a:e5c0:2:12:400:f0ff:fea9:c3e3

DONE Get feature list of jool

DONE Get feature list of tayga

DONE Setup P4 base / structure

DONE Create minimal controller for populating tables

DONE Checkout / review egress settings

DONE Create Basis to translate ipv6 –> ipv4 with a (freely programmable) prefix; test ping6_switch

DONE Insert prefix into switch: v6_networks

DONE Support multiple ipv6 source networks: need new table w/ 2 keys! -> not at the moment

DONE Write test.py to generate correct destination packets

>>> a = ipaddress.ip_network("2001:db8::/32") >>> b = ipaddress.ip_address("10.0.0.1") >>> a[int(b)] IPv6Address('2001:db8::a00:1')

DONE Using test.py, new NDP packets been seen, bur zero icmp on the outgoing side

p4@ubuntu:~/master-thesis/p4app$ python test.py –method v6_static_mapping –debug INFO:main:Trying to reach 10.0.0.1 (64:ff9b::a00:1) from h1 sudo: unable to resolve host ubuntu PING 64:ff9b::a00:1(64:ff9b::a00:1) 56 data bytes

— 64:ff9b::a00:1 ping statistics — 1 packets transmitted, 0 received, 100% packet loss, time 0ms

p4@ubuntu:~/master-thesis/p4app$ \x00\x00\x00 :\xff\xfe\x80\x00\x00\x00\x00\x00\x00\x02\x00\n\xff\xfe\x00\x00\x01 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x87\x00\x08+\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:cpu = <CpuHeader task=ICMP6_GENERAL ingress_port=1 type=0x86dd |<Raw load='`\x00\x00\x00\x00 :\xff\xfe\x80\x00\x00\x00\x00\x00\x00\x02\x00\n\xff\xfe\x00\x00\x01 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x87\x00\x08+\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:reassambled=<Ether dst=00:00:0a:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=2001:db8::42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x82b res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:INCOMING: <Ether dst=00:00:0a:00:00:42 src=00:00:0a:00:00:01 type=0x4242 |<Raw load='\x00\x02\x00\x01\x86\xdd`\x00\x00\x00\x00 :\xff\xfe\x80\x00\x00\x00\x00\x00\x00\x02\x00\n\xff\xfe\x00\x00\x01 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x87\x00\x08+\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:cpu = <CpuHeader task=ICMP6_GENERAL ingress_port=1 type=0x86dd |<Raw load='`\x00\x00\x00\x00 :\xff\xfe\x80\x00\x00\x00\x00\x00\x00\x02\x00\n\xff\xfe\x00\x00\x01 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x87\x00\x08+\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:reassambled=<Ether dst=00:00:0a:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=2001:db8::42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x82b res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:INCOMING: <Ether dst=00:00:0a:00:00:42 src=00:00:0a:00:00:01 type=0x4242 |<Raw load='\x00\x02\x00\x01\x86\xdd`\x00\x00\x00\x00 :\xff\xfe\x80\x00\x00\x00\x00\x00\x00\x02\x00\n\xff\xfe\x00\x00\x01 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x87\x00\x08+\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:cpu = <CpuHeader task=ICMP6_GENERAL ingress_port=1 type=0x86dd |<Raw load='`\x00\x00\x00\x00 :\xff\xfe\x80\x00\x00\x00\x00\x00\x00\x02\x00\n\xff\xfe\x00\x00\x01 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x87\x00\x08+\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:reassambled=<Ether dst=00:00:0a:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=2001:db8::42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x82b res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>>

DONE Debug why neighbor discover does not work anymore

log

p4@ubuntu:~$ mx h1 tcpdump -lni any sudo: unable to resolve host ubuntu tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on any, link-type LINUX_SLL (Linux cooked), capture size 262144 bytes

19:57:53.258805 IP6 fe80::200:aff:fe00:1 > ff02::1:ff00:42: ICMP6, neighbor solicitation, who has 2001:db8::42, length 32 19:57:54.256924 IP6 2001:db8::1 > 2001:db8::1: ICMP6, destination unreachable, unreachable address 64:ff9b::a00:1, length 112

EBUG:main:INCOMING: <Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x4242 |<Raw load='\x00\x01\x00\x01\x86\xdd`\x00\x00\x00\x00 :\xff\xfe\x80\x00\x00\x00\x00\x00\x00\x02\x00\n\xff\xfe\x00\x00\x01\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00B\x87\x007\xdf\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:cpu = <CpuHeader task=ICMP6_NS ingress_port=1 type=0x86dd |<Raw load='`\x00\x00\x00\x00 :\xff\xfe\x80\x00\x00\x00\x00\x00\x00\x02\x00\n\xff\xfe\x00\x00\x01\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00B\x87\x007\xdf\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x37df res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> INFO:main:Doing neighbor solicitation DEBUG:main:OUTGOING: <Ether dst=00:00:0a:00:00:01 src=00:00:0a:00:00:42 type=0x86dd |<IPv6 nh=ICMPv6 hlim=255 src=2001:db8::42 dst=fe80::200:aff:fe00:1 |<ICMPv6ND_NA cksum=None R=0 S=1 tgt=2001:db8::42 |<ICMPv6NDOptDstLLAddr lladdr=00:00:0a:00:00:42 |>>>> DEBUG:main:INCOMING: <Ether dst=00:00:0a:00:00:01 src=00:00:0a:00:00:42 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8::42 dst=fe80::200:aff:fe00:1 |<ICMPv6ND_NA type=Neighbor Advertisement code=0 cksum=0xa5e9 R=0 S=1 O=1 res=0x0 tgt=2001:db8::42 |<ICMPv6NDOptDstLLAddr type=2 len=1 lladdr=00:00:0a:00:00:42 |>>>>

After removing noise:

DEBUG:main:reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x37df res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x37df res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x13a7 res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x13a7 res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x13a7 res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>>

Do we have routing for fe80::/10? Probably not. Shouldn't we see it in the controller then?

NDP is controller only!

DONE Finish NDP in switch

DONE Need to set R/S/O bits

DONE Need to parse R/S/O bits

DONE Maybe merge v6_address and v6_networks - /128 is the same

DONE Implement address learning? -> not at the moment

DONE Not sure whether we should react on router solicitation -> not at the moment

Using static routes -> should do the job

DONE Implement the calculation

Currently offset + ip address

DONE Sketch the flow for session handling for icmp6 w/o packet loss

switch receives icmp6 packet for known prefix
controller needs to create session entry (?)

Not sure what I meant to do here - closing.

DONE Create table entry for mapping v4->v6 [net]

DONE Create table entry for mapping v6->v4 [net]

DONE Implement ICMP <-> ICMP6 translation

DONE 2019-02-28 / icmp testing / first NDP steps

DONE pinging in router mode: nothing shown in the controller, multicast forwarded -> "ok"

root@ubuntu:~/master-thesis/p4app# ping6 -c1 2001:db8:61::42 PING 2001:db8:61::42(2001:db8:61::42) 56 data bytes From 2001:db8:61::1 icmp_seq=1 Destination unreachable: Address unreachable

— 2001:db8:61::42 ping statistics — 1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms

root@ubuntu:~/master-thesis/p4app#

sudo: unable to resolve host ubuntu tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on h1-eth0, link-type EN10MB (Ethernet), capture size 262144 bytes 09:47:07.191569 IP6 2001:db8:61::1 > ff02::1:ff00:42: ICMP6, neighbor solicitation, who has 2001:db8:61::42, length 32 09:47:08.190331 IP6 2001:db8:61::1 > ff02::1:ff00:42: ICMP6, neighbor solicitation, who has 2001:db8:61::42, length 32 09:47:09.190279 IP6 2001:db8:61::1 > ff02::1:ff00:42: ICMP6, neighbor solicitation, who has 2001:db8:61::42, length 32

DONE special rule for ff02::1:ff00:42

Semi works, replies are there, but host still retries:

p4@ubuntu:~/master-thesis$ h=1; mx h$h tcpdump -lni h$h-eth0 sudo: unable to resolve host ubuntu tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on h1-eth0, link-type EN10MB (Ethernet), capture size 262144 bytes 09:58:04.786979 IP6 2001:db8:61::1 > ff02::1:ff00:42: ICMP6, neighbor solicitation, who has 2001:db8:61::42, length 32 09:58:04.793560 IP6 2001:db8:61::42 > 2001:db8:61::1: ICMP6, neighbor advertisement, tgt is 2001:db8:61::42, length 32 09:58:05.786311 IP6 2001:db8:61::1 > ff02::1:ff00:42: ICMP6, neighbor solicitation, who has 2001:db8:61::42, length 32 09:58:05.790506 IP6 2001:db8:61::42 > 2001:db8:61::1: ICMP6, neighbor advertisement, tgt is 2001:db8:61::42, length 32 09:58:06.786254 IP6 2001:db8:61::1 > ff02::1:ff00:42: ICMP6, neighbor solicitation, who has 2001:db8:61::42, length 32 09:58:06.792325 IP6 2001:db8:61::42 > 2001:db8:61::1: ICMP6, neighbor advertisement, tgt is 2001:db8:61::42, length 32

Maybe checksums?

DONE Parse icmp

DONE Parse icmpv6

DONE Add (static) egress configuration

DONE Calculate ICMP6 checksums in controller

Need to include the payload!?!!

DONE Implement minimal neighbor discovery in controller

DONE For the switch

DONE Register IPv6 address in table

DONE Parse ICMPv6 up to neighbor solicitation -> no: checksum problem

DONE Use NDP (Neighbor Solicitation (NDP) , Neighbor Advertisement (NDP)) -> no: controller

Approach 2: use cpu header, forward information to controller

DONE Fix the ip address match/mapping: 42 -> 2a -> use hex originally

DONE Find out why wrong type is used -> overlapping with NDP

DEBUG:main:INCOMING: <Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x4242 |<Raw load='\x00\x03\x00\x01\x86\xdd`\x00\x00\x00\x00 :\xff \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00B\x87\x00\xd3\xa4\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> p=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x4242 |<Raw load='\x00\x03\x00\x01\x86\xdd`\x00\x00\x00\x00 :\xff \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00B\x87\x00\xd3\xa4\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:cpu = <CpuHeader task=DEBUG ingress_port=1 type=0x86dd |<Raw load='`\x00\x00\x00\x00 :\xff \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00B\x87\x00\xd3\xa4\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:o=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0xd3a4 res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:Debug purpose only DEBUG:main:INCOMING: <Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x4242 |<Raw load='\x00\x03\x00\x01\x86\xdd`\x00\x00\x00\x00 :\xff \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00B\x87\x00\xd3\xa4\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> p=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x4242 |<Raw load='\x00\x03\x00\x01\x86\xdd`\x00\x00\x00\x00 :\xff \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00B\x87\x00\xd3\xa4\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:cpu = <CpuHeader task=DEBUG ingress_port=1 type=0x86dd |<Raw load='`\x00\x00\x00\x00 :\xff \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00B\x87\x00\xd3\xa4\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:o=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0xd3a4 res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:Debug purpose only DEBUG:main:INCOMING: <Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x4242 |<Raw load='\x00\x03\x00\x01\x86\xdd`\x00\x00\x00\x00 :\xff \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00B\x87\x00\xd3\xa4\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> p=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x4242 |<Raw load='\x00\x03\x00\x01\x86\xdd`\x00\x00\x00\x00 :\xff \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00B\x87\x00\xd3\xa4\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:cpu = <CpuHeader task=DEBUG ingress_port=1 type=0x86dd |<Raw load='`\x00\x00\x00\x00 :\xff \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00B\x87\x00\xd3\xa4\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:o=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0xd3a4 res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:Debug purpose only

Disable debug by default -> gives correct packets

DEBUG:main:INCOMING: <Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x4242 |<Raw load='\x00\x01\x00\x01\x86\xdd`\x00\x00\x00\x00 :\xff \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00B\x87\x00\xd3\xa4\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:cpu = <CpuHeader task=ICMP6_NS ingress_port=1 type=0x86dd |<Raw load='`\x00\x00\x00\x00 :\xff \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00B\x87\x00\xd3\xa4\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:o=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0xd3a4 res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:Doing neighbor solicitation DEBUG:main:INCOMING: <Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x4242 |<Raw load='\x00\x01\x00\x01\x86\xdd`\x00\x00\x00\x00 :\xff \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00B\x87\x00\xd3\xa4\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:cpu = <CpuHeader task=ICMP6_NS ingress_port=1 type=0x86dd |<Raw load='`\x00\x00\x00\x00 :\xff \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00B\x87\x00\xd3\xa4\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:o=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0xd3a4 res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:Doing neighbor solicitation DEBUG:main:INCOMING: <Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x4242 |<Raw load='\x00\x01\x00\x01\x86\xdd`\x00\x00\x00\x00 :\xff \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00B\x87\x00\xd3\xa4\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:cpu = <CpuHeader task=ICMP6_NS ingress_port=1 type=0x86dd |<Raw load='`\x00\x00\x00\x00 :\xff \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00B\x87\x00\xd3\xa4\x00\x00\x00\x00 \x01\r\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00B\x01\x01\x00\x00\n\x00\x00\x01' |>> DEBUG:main:o=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0xd3a4 res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:Doing neighbor solicitation

DONE For other nodes -> multicast

TODO Maybe implement link local addresses (missing at the moment)

ff02::/??

rfc4861

"Neighbor Solicitation messages are multicast to the solicited-node multicast address of the target address."

DONE multicasting / groups

create a group ("node") that contains "all other" ports

create a multicast group with an ID

associate the "node" with the multicast group ID

If destination is within ff02::1:ff00:0/104, multicast

DONE Make switch answer icmp6 echo request for

DONE Introduce mixed mode: switch: icmp6 echo reply, controller: NDP

DONE try 1: reply seen, but checksum is incorrect

DONE try 2: analysing tagya checksumming code

static uint16_t ip6_checksum(struct ip6 *ip6, uint32_t data_len, uint8_t proto) { uint32_t sum = 0; uint16_t *p; int i;

for (i = 0, p = ip6->src.s6_addr16; i < 16; ~~i) sum += *p~~; sum += htonl(data_len) >> 16; sum += htonl(data_len) & 0xffff; sum += htons(proto);

while (sum > 0xffff) sum = (sum & 0xffff) + (sum >> 16);

return ~sum; }

static uint16_t convert_cksum(struct ip6 *ip6, struct ip4 *ip4) { uint32_t sum = 0; uint16_t *p; int i;

sum += ~ip4->src.s_addr >> 16; sum += ~ip4->src.s_addr & 0xffff; sum += ~ip4->dest.s_addr >> 16; sum += ~ip4->dest.s_addr & 0xffff;

for (i = 0, p = ip6->src.s6_addr16; i < 16; ~~i) sum += *p~~;

while (sum > 0xffff) sum = (sum & 0xffff) + (sum >> 16);

return sum; } … static int xlate_payload_4to6(struct pkt *p, struct ip6 *ip6) { uint16_t *tck; uint16_t cksum;

if (p->ip4->flags_offset & htons(IP4_F_MASK)) return 0;

switch (p->data_proto) { case 1: cksum = ip6_checksum(ip6, htons(p->ip4->length) - p->header_len, 58); cksum = ones_add(p->icmp->cksum, cksum); if (p->icmp->type == 8) { p->icmp->type = 128; p->icmp->cksum = ones_add(cksum, ~(128 - 8)); } else { p->icmp->type = 129; p->icmp->cksum = ones_add(cksum, ~(129 - 0)); } return 0;

DONE Add default route for v6 hosts

p4@ubuntu:~/master-thesis$ mx h1 ip -6 r sudo: unable to resolve host ubuntu 2001:db8::/64 dev h1-eth0 proto kernel metric 256 pref medium fe80::/64 dev h1-eth0 proto kernel metric 256 pref medium default via 2001:db8::42 dev h1-eth0 metric 1024 pref medium p4@ubuntu:~/master-thesis$

DONE TEST ping6ing an emulated ipv6 host / Translate icmp <-> icmp6: test v6_static_mapping

DONE try1: only packets on h1 + controller -> wrong checksum 2019-03-25

filename=static_nat64-2019-03-25-1121-h1.pcap
intf=h1-eth0
mx h1 tcpdump -ni h1-eth0 -w static_nat64-2019-03-25-1121-h1.pcap

tcpdump: listening on h1-eth0, link-type EN10MB (Ethernet), capture size 262144 bytes ^C10 packets captured 10 packets received by filter 0 packets dropped by kernel DEBUG:main:reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x37df res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x37df res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x13a7 res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x13a7 res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x13a7 res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>>

That looks like NDP is not working again. Why: checksum seems to be incorrect according to wireshark. Why? Checksum is the SAME as in the request -> probably not updated. After inserting marker: it's clear that the checksum code DOES NOT work on the task field!

Problem: task field might be overriden for controller use in different table -> need different task field!

DONE try2: checksum ok, but no packets on h3

DONE Setup a default rule for the IPv4 world to debug on controller

Still not seeing the converted packet, however seeing icmp6_ns packets which should not be there:

table entry for ns:

ff:02:00:00:00:00:00:00:00:00:00:01:ff:00:00:42/128

debug packet seen in controller:

DEBUG:main:v6 reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x37df res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:v6 reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x37df res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:v6 reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x13a7 res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>>

DEBUG:main:v6 reassambled=<Ether dst=00:00:0a:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=920946 plen=64 nh=ICMPv6 hlim=64 src=2001:db8::1 dst=2001:db8:1::a00:1 |<ICMPv6EchoRequest type=Echo Request code=0 cksum=0xf981 id=0x5f7c seq=0x1 data='N\xc6\x98\\\x00\x00\x00\x00\x12\x1b\t\x00\x00\x00\x00\x00\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !"#$%&\'()*+,-./01234567' |>>>

debugging MIGHT come from nat64 table!

DONE try3: re-rewrite: no packets on h3 again (2019-03-30)

p4@ubuntu:~$ ~/master-thesis/p4app/sniff-host.sh h1 static_nat64

cd /home/p4/master-thesis/pcap
host=h1
name=static_nat64
date +%F-%H%M
now=2019-03-30-1608
filename=static_nat64-2019-03-30-1608-h1.pcap
intf=h1-eth0
mx h1 tcpdump -ni h1-eth0 -w static_nat64-2019-03-30-1608-h1.pcap

tcpdump: listening on h1-eth0, link-type EN10MB (Ethernet), capture size 262144 bytes ^C10 packets captured 10 packets received by filter 0 packets dropped by kernel

p4@ubuntu:~$ p4@ubuntu:~/master-thesis/pcap$ ../p4app/sniff-host.sh h3 static_nat64

cd /home/p4/master-thesis/pcap
host=h3
name=static_nat64
date +%F-%H%M
now=2019-03-30-1608
filename=static_nat64-2019-03-30-1608-h3.pcap
intf=h3-eth0
mx h3 tcpdump -ni h3-eth0 -w static_nat64-2019-03-30-1608-h3.pcap

tcpdump: listening on h3-eth0, link-type EN10MB (Ethernet), capture size 262144 bytes ^C0 packets captured 0 packets received by filter 0 packets dropped by kernel

p4@ubuntu:~/master-thesis/pcap$

-> NDP is going to the controller instead of being handled by the switch INFO:main:unhandled reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x37df res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> from table TABLE_V6_NETWORKS

-> checksums likely broken again due to checksum changes -> solved, test case for verification is

p4@ubuntu:~$ python ~/master-thesis/p4app/test.py -m v6_static_mapping --debug
INFO:main:Trying to reach 10.0.0.1 (2001:db8:1::a00:1) from h1
PING 2001:db8:1::a00:1(2001:db8:1::a00:1) 56 data bytes
From 2001:db8::1 icmp_seq=1 Destination unreachable: Address unreachable

--- 2001:db8:1::a00:1 ping statistics ---
1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms

p4@ubuntu:~$ python ~/master-thesis/p4app/test.py -m ping6_switch --debug
INFO:main:Trying to reach 2001:db8::42 from h1
PING 2001:db8::42(2001:db8::42) 56 data bytes
64 bytes from 2001:db8::42: icmp_seq=1 ttl=64 time=6.30 ms

--- 2001:db8::42 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 6.304/6.304/6.304/0.000 ms

DONE try4: h3 receives packet, but length seems to be off

Seeing frame check sequence error
total length ipv4 = 69 (h3)
ipv6 payload length = 64 (h1)
comes from hdr.ipv4.totalLen = (bit<16>) hdr.ipv6.payload_length + 5;
https://tools.ietf.org/html/rfc791:

Total Length is the length of the datagram, measured in octets, including internet header and data.

checksum = 0 -> offset incorrect???
ipv4 checksum is 0
nat64 frame length = 98 bytes
theory: ethernet: 48+48+16 = 112 bit -> 12 bytes
nat64: 76 bytes inside ethernet frame
nat64: 69 bytes according to total_len
nat64: -5 bytes = icmp4 = 64 bytes
icmp6 == 64 bytes
diff of 7 bytes :-)
icmp should be:
type+code+checksum = 4 bytes
seq + identifier = 4 bytes
data = variable, source is 56 bytes
real world ping: total_length = 84, 48 bytes icmp data
header length in both cases = 5
identification 0 in nat64, 0x2cad in real
flags 0 in nat64, 0x4000 (DF) in real
ttl = 64 both
proto = icmp both cases
header checksum = 0 in nat64, set in real
data is shorter in nat64, due to total_len error
real world icmp contains time stamp data ???
wireshark EXPECTS timestamp data in echo request! + 8 bytes and then data
almost fits diff 7 vs. 8
8 bytes in one block in wireshark
after ipv4: 6 + 8 + 3*(16) + 2 = 64 – wtf??
icmp6: data == 56 bytes
nat64 and realping4 frame == 98 bytes

TODO Correct IPv4 header checksum

TODO Correct ICMP header checksum

TODO Fix length issue

Seems like total_len is too short - but why?

DONE try5: packet is good, but routing is "strange": default route == 10.0.0.66

root@ubuntu:~# ip r default via 10.0.0.66 dev h3-eth0 10.0.0.0/24 dev h3-eth0 proto kernel scope link src 10.0.0.1 root@ubuntu:~#

DONE try6: host sees packet, but does not react on it, manually tring gateway ping

p4@ubuntu:~$ mx h3 tcpdump -lni h3-eth0 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on h3-eth0, link-type EN10MB (Ethernet), capture size 262144 bytes 09:06:02.636669 IP 10.1.1.1 > 10.0.0.1: ICMP echo request, id 31058, seq 1, length 64

in h3:

root@ubuntu:~# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: h3-eth0@if38: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9500 qdisc netem state UP group default qlen 1000 link/ether 00:00:0a:00:00:03 brd ff:ff:ff:ff:ff:ff link-netnsid 0 inet 10.0.0.1/24 scope global h3-eth0 valid_lft forever preferred_lft forever root@ubuntu:~#

no arp entries:

root@ubuntu:~# arp -an root@ubuntu:~#

root@ubuntu:~# ping -c1 10.0.0.66 PING 10.0.0.66 (10.0.0.66) 56(84) bytes of data. From 10.0.0.1 icmp_seq=1 Destination Host Unreachable

— 10.0.0.66 ping statistics — 1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms

root@ubuntu:~#

DONE try7: checkout dump from ping4_gw-2019-03-31-0916-h3.pcap: regular arp

DONE Get a real world arp trace

root@line:/home/nico/vcs/master-thesis/pcap# tcpdump -ni wlan0 -w ping4_realworld_p7 icmp or arp or host 192.168.4.1 tcpdump: listening on wlan0, link-type EN10MB (Ethernet), capture size 262144 bytes root@line:~# arp -an ? (192.168.4.188) at 00:0d:b9:46:3b:d4 [ether] on wlan0 root@line:~# ping -c1 192.168.4.1 PING 192.168.4.1 (192.168.4.1) 56(84) bytes of data. 64 bytes from 192.168.4.1: icmp_seq=1 ttl=64 time=15.5 ms

— 192.168.4.1 ping statistics — 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 15.533/15.533/15.533/0.000 ms root@line:~#

TODO Implement default route handling, maybe implement ARP?

DONE create arp table

TODO Multiple tables not supported

p4c –target bmv2 –arch v1model –std p4-16 "../p4src/static-mapping.p4" -o "/home/p4/master-thesis/p4src" ../p4src/static-mapping.p4(366): error: Program is not supported by this target, because table MyIngress.v6_networks has multiple successors table v6_networks { ^^^^^^^^^^^ Compilation Error

Entry in v4_networks?

DONE Add table name support in debug messages

DONE Why getting IPv6 packets in

INFO:main:unhandled reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x37df res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> from table TABLE_V6_NETWORKS INFO:main:unhandled reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x37df res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> from table TABLE_V6_NETWORKS INFO:main:unhandled reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x13a7 res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> from table TABLE_NAT64 INFO:main:unhandled reassambled=<Ether dst=00:00:0a:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=920946 plen=64 nh=ICMPv6 hlim=64 src=2001:db8::1 dst=2001:db8:1::a00:1 |<ICMPv6EchoRequest type=Echo Request code=0 cksum=0x3d1a id=0xade seq=0x1 data='\x1f\x92\x9a\\\x00\x00\x00\x00WU\x02\x00\x00\x00\x00\x00\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !"#$%&\'()*+,-./01234567' |>>> from table TABLE_V4_NETWORKS

DONE Solve logic problem: Valid headers

If ipv6 header is valid && nat64 will be made and afterwards v4 egress needs to be applied
If ipv4 header is valid && nat46 will be made and afterwards v6 egress needs to be applied

DONE Check translated fields

DONE source correctly translated to 10.1.1.1

DONE destination correctly translated to 10.0.0.1 -> pings h3

DONE egress is correct, comes out at h3

DONE protocol 58 is wrong -> should be 1

DONE figure out switch() syntax

DONE transform protocol specific: icmp6 -> icmp

DONE Implement double table, as there are no if's in actions

DONE Debug Ethernet frame check sequence error -> need to compute checksum

https://en.wikipedia.org/wiki/Frame_check_sequence

According to Edgar this should not be seen anyway.

DONE Calculate ICMP checksum

DONE Check field lengths

DONE Fix resolve / mac addresses -> ethernet is wrong!

According to pcap/static_nat64-2019-04-03-0932-h3.pcap ethernet frame looks good. Still no reply / reaction from host h3.

DONE Fix IPv4 header checksum // wrong according to wireshark

When & how to update?

DONE check packets static_nat64-2019-04-03-0957-h1.pcap: answer not outputted/natted!

INFO:main:unhandled reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x37df res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> from table TABLE_V6_NETWORKS INFO:main:unhandled reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x37df res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> from table TABLE_V6_NETWORKS INFO:main:unhandled reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x13a7 res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> from table TABLE_V6_NETWORKS INFO:main:unhandled reassambled=<Ether dst=00:00:0a:00:00:42 src=00:00:0a:00:00:03 type=0x800 |<IP version=4 ihl=5 tos=0x0 len=84 id=60628 flags= frag=0 ttl=64 proto=icmp chksum=0x78d2 src=10.0.0.1 dst=10.1.1.1 options=[] |<ICMP type=echo-reply code=0 chksum=0x9138 id=0x26e9 seq=0x1 |<Raw load='\x8b\x83\xa4\\\x00\x00\x00\x00S*\x06\x00\x00\x00\x00\x00\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !"#$%&\'()*+,-./01234567' |>>>> from table TABLE_V6_NETWORKS

DONE Is 10.1.1.1/x in the nat64 table? yes

Adding entry to lpm match table nat46 match key: LPM-0a:01:01:00/24 action: nat46_static runtime data: 20:01:0d:b8:00:00:00:00:00:00:00:00:00:00:00:00 0a:01:01:00 20:01:0d:b8:00:01:00:00:00:00:00:00:00:00:00:00 Entry has been added with handle 0

DONE if nat46_static is called, why is the ethernet type still ipv4? -> log!

DONE nat46 table is applied

DONE Check why there is a miss in the table -> c&p bug?

[09:57:31.415] [bmv2] [T] [thread 9332] [105.0] [cxt 0] Applying table 'MyIngress.v6_networks' [09:57:31.415] [bmv2] [D] [thread 9332] [105.0] [cxt 0] Looking up key:

hdr.ipv6.dst_addr : 20010db8000000000000000000000001

[09:57:31.415] [bmv2] [D] [thread 9332] [105.0] [cxt 0] Table 'MyIngress.v6_networks': miss

DONE transform protocol specific: icmp -> icmp6

DONE Make switch answer IPv4 icmp echo request for

DONE Make switch respond to ARP

DONE Make switch respond to icmp echo request w/ correct checksum (2019-04-03)

DONE Correct icmp6 checksum

DONE Checksum is SET, but not correct!

DONE Test result (2019-04-03)

p4@ubuntu:~$ python ~/master-thesis/p4app/test.py -m v6_static_mapping PING 2001:db8:1::a00:1(2001:db8:1::a00:1) 56 data bytes 64 bytes from 2001:db8:1::a00:1: icmp_seq=1 ttl=64 time=14.7 ms

— 2001:db8:1::a00:1 ping statistics — 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 14.750/14.750/14.750/0.000 ms p4@ubuntu:~$

DONE Add / check default route for v4 hosts

DONE Check IPv4 -> IPv6 translation

p4@ubuntu:~$ python ~/master-thesis/p4app/test.py -m v4_static_mapping PING 10.1.1.1 (10.1.1.1) 56(84) bytes of data. 64 bytes from 10.1.1.1: icmp_seq=1 ttl=64 time=12.5 ms

— 10.1.1.1 ping statistics — 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 12.593/12.593/12.593/0.000 ms p4@ubuntu:~$

TODO Implement ipv6<->ipv4 udp translation

DONE udp: ipv6->ipv4

p4@ubuntu:~$ mx h3 "echo V4-OK | socat - UDP-LISTEN:2342" /usr/bin/mx: line 25: [: too many arguments V6-OK p4@ubuntu:~$

p4@ubuntu:~$ mx h1 "echo V6-OK | socat - UDP6:[2001:db8:1::a00:1]:2342" /usr/bin/mx: line 25: [: too many arguments V4-OK p4@ubuntu:~$

pcap/v6_udp-2019-04-11-0840-h1.pcap

pcap/v6_udp-2019-04-11-0840-h3.pcap

TODO udp: ipv4->ipv6

p4@ubuntu:~$ mx h3 "echo V4-OK | socat - UDP:10.1.1.1:2342" /usr/bin/mx: line 25: [: too many arguments V6-OK p4@ubuntu:~$ p4@ubuntu:~$ mx h1 "echo V6-OK | socat - UDP6-LISTEN:2342" /usr/bin/mx: line 25: [: too many arguments V4-OK

proof

create mode 100644 pcap/v4_udp-2019-04-11-0855-h1.pcap create mode 100644 pcap/v4_udp-2019-04-11-0855-h3.pcap

DONE Implement ipv6<->ipv4 tcp translation

DONE tcp: v6 -> v4

p4@ubuntu:~$ mx h1 "echo V6-OK | socat - TCP6:[2001:db8:1::a00:1]:2342" /usr/bin/mx: line 25: [: too many arguments V4-OK p4@ubuntu:~$ p4@ubuntu:~$ mx h3 "echo V4-OK | socat - TCP-LISTEN:2342" /usr/bin/mx: line 25: [: too many arguments V6-OK p4@ubuntu:~$

Proof

create mode 100644 pcap/v6_tcp-2019-04-11-0846-h1.pcap create mode 100644 pcap/v6_tcp-2019-04-11-0846-h3.pcap

DONE tcp: v4 -> v6

p4@ubuntu:~$ mx h3 "echo V4-OK | socat - TCP:10.1.1.1:2342" /usr/bin/mx: line 25: [: too many arguments V6-OK p4@ubuntu:~$ p4@ubuntu:~$ mx h1 "echo V6-OK | socat - TCP6-LISTEN:2342" /usr/bin/mx: line 25: [: too many arguments V4-OK p4@ubuntu:~$

Proof

pcap/v4_tcp-2019-04-11-0853-h1.pcap | Bin 0 -> 1174 bytes pcap/v4_tcp-2019-04-11-0853-h3.pcap | Bin 0 -> 1070 bytes

TODO Update p4c to avoid compiler bug

TODO Updating p4c

DONE Try1

p4@ubuntu:~/p4-learning/vm/bin$ sh update-p4c.sh update-p4c.sh: 34: update-p4c.sh: Syntax error: "(" unexpected p4@ubuntu:~/p4-learning/vm/bin$ git pull Already up-to-date. p4@ubuntu:~/p4-learning/vm/bin$ git describe --always fb9d0ea p4@ubuntu:~/p4-learning/vm/bin$

p4@ubuntu:~/p4-tools/p4c$ git checkout 1ab1c796677a3a2349df9619d82831a39a6e4437 p4@ubuntu:~/p4-tools/p4c/build$ cmake .. p4@ubuntu:~/p4-tools/p4c/build$ make -j8

DONE Need to upgrade RAM / c++ errors / killed

DONE Compile error from 1ab1c79

[ 33%] Building CXX object frontends/CMakeFiles/frontend.dir/unified_frontend_sources_4.cpp.o [ 37%] Building CXX object frontends/CMakeFiles/frontend.dir/__/ir/ir-generated.cpp.o [ 35%] Building CXX object frontends/CMakeFiles/frontend.dir/unified_frontend_sources_2.cpp.o [ 43%] Built target midend [ 45%] Linking CXX static library libfrontend.a [ 56%] Built target frontend Scanning dependencies of target bmv2backend make[2]: * No rule to make target '../control-plane/p4runtime/proto/p4/v1/p4data.proto', needed by 'control-plane/google/rpc/status.pb.cc'. Stop. CMakeFiles/Makefile2:1197: recipe for target 'control-plane/CMakeFiles/controlplane.dir/all' failed make[1]: * [control-plane/CMakeFiles/controlplane.dir/all] Error 2 make[1]: * Waiting for unfinished jobs…. [ 58%] Building CXX object backends/bmv2/CMakeFiles/bmv2backend.dir/unified_bmv2_backend_common_srcs_1.cpp.o [ 59%] Building CXX object backends/bmv2/CMakeFiles/bmv2backend.dir/unified_bmv2_backend_common_srcs_2.cpp.o [ 61%] Linking CXX static library libbmv2backend.a [ 61%] Built target bmv2backend Makefile:138: recipe for target 'all' failed make: * [all] Error 2 p4@ubuntu:~/p4-tools/p4c/build$ cd .. p4@ubuntu:~/p4-tools/p4c$ git describe –always 1ab1c79 p4@ubuntu:~/p4-tools/p4c$

DONE Upgrading to latest master: 46609cd -> fails

p4@ubuntu:~/p4-tools/p4c$ git describe –always 46609cd

p4@ubuntu:~/p4-tools/p4c$ cd build/ p4@ubuntu:~/p4-tools/p4c/build$ make clean frontends/CMakeFiles/frontend.dir/build.make:93: warning: overriding recipe for target 'frontends/parsers/v1/v1parser.output' frontends/CMakeFiles/frontend.dir/build.make:74: warning: ignoring old recipe for target 'frontends/parsers/v1/v1parser.output' p4@ubuntu:~/p4-tools/p4c/build$ cmake .. && make -j8 [ 50%] Building CXX object frontends/CMakeFiles/frontend.dir/unified_frontend_sources_5.cpp.o [ 51%] Building CXX object frontends/CMakeFiles/frontend.dir/unified_frontend_sources_6.cpp.o [ 53%] Linking CXX static library libir.a [ 53%] Built target ir [ 54%] Building CXX object frontends/CMakeFiles/frontend.dir/unified_frontend_sources_7.cpp.o [ 56%] Linking CXX static library libfrontend.a [ 56%] Built target frontend make[2]: *** No rule to make target '../control-plane/p4runtime/proto/p4/v1/p4data.proto', needed by 'control-plane/google/rpc/status.pb.cc'. Stop. CMakeFiles/Makefile2:1197: recipe for target 'control-plane/CMakeFiles/controlplane.dir/all' failed make[1]: *** [control-plane/CMakeFiles/controlplane.dir/all] Error 2 make[1]: *** Waiting for unfinished jobs.... Scanning dependencies of target bmv2backend [ 58%] Building CXX object backends/bmv2/CMakeFiles/bmv2backend.dir/unified_bmv2_backend_common_srcs_2.cpp.o [ 59%] Building CXX object backends/bmv2/CMakeFiles/bmv2backend.dir/unified_bmv2_backend_common_srcs_1.cpp.o [ 61%] Linking CXX static library libbmv2backend.a [ 61%] Built target bmv2backend Makefile:138: recipe for target 'all' failed make: *** [all] Error 2 p4@ubuntu:~/p4-tools/p4c/build$

DONE Build on notebook succeeds 900557c5

[16:37] line:p4c% git describe –always 900557c5

TODO Build on VM with 900557c5 after removing build/

TODO Get p4 VM / vagrant running

DONE install libvirtd-daemon

DONE install ebtables

DONE install dnsmasq

TODO Get p4c & co. running on the notebook

DONE mininet via packages

DONE p4c

(virtualenv-with-site) [17:43] line:build% make install [ 0%] Built target update_includes [ 0%] Built target linkgraphs [ 0%] Built target linkbmv2 [ 0%] Built target linkp4cebpf [ 0%] Built target linkp4test [ 1%] Built target p4c_driver [ 4%] Built target p4ctoolkit [ 12%] Built target irgenerator [ 14%] Generating IR class files [ 14%] Built target genIR [ 18%] Built target ir [ 18%] Built target mkv1dirs [ 18%] Built target mkp4dirs [ 45%] Built target frontend [ 51%] Built target midend [ 51%] Built target mkP4configdir [ 64%] Built target controlplane [ 68%] Built target bmv2backend [ 75%] Built target p4c-bm2-psa [ 81%] Built target p4c-bm2-ss [ 84%] Built target p4c-ebpf [ 87%] Built target p4test [ 90%] Built target p4c-graphs [ 93%] Built target gtest [100%] Built target gtestp4c Install the project… – Install configuration: "RELEASE" – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/share/p4c/p4include – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/share/p4c/p4include/p4d2model.p4 – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/share/p4c/p4include/v1model.p4 – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/share/p4c/p4include/core.p4 – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/share/p4c/p4include/psa.p4 – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/bin/p4c – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/share/p4c/p4c_src – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/share/p4c/p4c_src/driver.py – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/share/p4c/p4c_src/util.py – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/share/p4c/p4c_src/config.py – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/share/p4c/p4c_src/__init__.py – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/share/p4c/p4c_src/main.py – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/share/p4c/p4c_src/p4c.bmv2.cfg – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/share/p4c/p4c_src/p4c.ebpf.cfg – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/bin/p4c-bm2-ss – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/bin/p4c-bm2-psa – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/bin/p4c-ebpf – Up-to-date: /home/nico/vcs/master-thesis/support/p4c-installation/share/p4c/p4include – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/share/p4c/p4include/ebpf_model.p4 – Installing: /home/nico/vcs/master-thesis/support/p4c-installation/bin/p4test – Installing: home/nico/vcs/master-thesis/support/p4c-installation/bin/p4c-graphs (virtualenv-with-site) [0:42] line:build% ls /home/nico/vcs/master-thesis/support/p4c-installation/bin p4c p4c-bm2-psa p4c-bm2-ss p4c-ebpf p4c-graphs p4test (virtualenv-with-site) [0:42] line:build%

TODO install behavioral-model

TODO Debug / reread the virtualbox script from the lecture

TODO Get p4c installed / running

https://github.com/p4lang/p4c

log

[16:31] line:p4c% git submodule update –init –recursive

root@line:~# apt install bison \ > build-essential \ > cmake \ > flex \ > g++ \ > libboost-dev \ > libboost-graph-dev \ > libboost-iostreams1.58-dev \ > libfl-dev \ > libgc-dev \ > libgmp-dev \ > pkg-config \ > python-ipaddr \ > python-pip \ > python-setuptools \ > tcpdump Reading package lists… Done Building dependency tree Reading state information… Done Package libboost-iostreams1.58-dev is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source

E: Package 'libboost-iostreams1.58-dev' has no installation candidate root@line:~# apt install libpcap-dev libelf-dev llvm clang iproute2 net-tools

[16:33] line:p4c% . ~/vcs/master-thesis/support/virtualenv2/bin/activate (virtualenv2) [16:35] line:p4c% pip install tenjin \ pyroute2 \ ply==3.8 \ scapy==2.4.0

Using newer version of libboost-iostreams1.58-dev

buidling

(virtualenv2) [16:36] line:p4c% mkdir build && \ cd build && \ cmake .. '-DCMAKE_CXX_FLAGS:STRING=-O3'

missing protobuf

(virtualenv2) [16:36] line:p4c% mkdir build && \ cd build && \ cmake .. '-DCMAKE_CXX_FLAGS:STRING=-O3'

cd build && \ cmake .. '-DCMAKE_CXX_FLAGS:STRING=-O3'– The C compiler identification is GNU 8.3.0 – The CXX compiler identification is GNU 8.3.0 – Check for working C compiler: /usr/bin/cc – Check for working C compiler: /usr/bin/cc – works – Detecting C compiler ABI info – Detecting C compiler ABI info - done – Detecting C compile features – Detecting C compile features - done – Check for working CXX compiler: /usr/bin/c++ – Check for working CXX compiler: /usr/bin/c++ – works – Detecting CXX compiler ABI info – Detecting CXX compiler ABI info - done – Detecting CXX compile features – Detecting CXX compile features - done – Found PythonInterp: /home/nico/vcs/master-thesis/support/virtualenv2/bin/python (found version "2.7.16") – Found FLEX: /usr/bin/flex (found version "2.6.4") – Found BISON: /usr/bin/bison (found suitable version "3.3.2", minimum required is "3.0.2") CMake Error at /usr/share/cmake-3.13/Modules/FindPackageHandleStandardArgs.cmake:137 (message): Could NOT find Protobuf (missing: Protobuf_INCLUDE_DIR) (Required is at least version "3.0.0") Call Stack (most recent call first): /usr/share/cmake-3.13/Modules/FindPackageHandleStandardArgs.cmake:378 (_FPHSA_FAILURE_MESSAGE) /usr/share/cmake-3.13/Modules/FindProtobuf.cmake:595 (FIND_PACKAGE_HANDLE_STANDARD_ARGS) CMakeLists.txt:81 (find_package)

– Configuring incomplete, errors occurred! See also "/home/nico/vcs/master-thesis/support/p4c/build/CMakeFiles/CMakeOutput.log". See also "/home/nico/vcs/master-thesis/support/p4c/build/CMakeFiles/CMakeError.log". (virtualenv2) [16:36] line:build% apt search protobuf

(virtualenv2) [16:38] line:build% sudo apt install python-protobuf protobuf-compiler

(virtualenv2) [16:38] line:build% cmake .. '-DCMAKE_CXX_FLAGS:STRING=-O3' – Found Protobuf: /usr/lib/x86_64-linux-gnu/libprotobuf.a;-lpthread (found suitable version "3.6.1", minimum required is "3.0.0") – Boost version: 1.67.0 – Found the following Boost libraries: – iostreams – regex – Found LibGc: /usr/lib/x86_64-linux-gnu/libgccpp.so (found suitable version "7.6.4", minimum required is "7.2.0") – Found Threads: TRUE – Found LibGmp: /usr/lib/x86_64-linux-gnu/libgmpxx.so – Looking for clock_gettime in rt – Looking for clock_gettime in rt - found – Looking for execinfo.h – Looking for execinfo.h - found – Looking for ucontext.h – Looking for ucontext.h - found – Looking for C++ include cxxabi.h – Looking for C++ include cxxabi.h - found – Looking for memchr – Looking for memchr - found – Looking for pipe2 – Looking for pipe2 - found – Looking for GC_print_stats – Looking for GC_print_stats - found – Found PY_difflib: /usr/lib/python2.7/difflib.pyc – Found PY_shutil: /usr/lib/python2.7/shutil.pyc – Found PY_tempfile: /usr/lib/python2.7/tempfile.pyc – Found PY_subprocess: /usr/lib/python2.7/subprocess.pyc – Found PY_re: /home/nico/vcs/master-thesis/support/virtualenv2/lib/python2.7/re.pyc – Could NOT find Doxygen (missing: DOXYGEN_EXECUTABLE) – Program 'simple_switch_CLI' (https://github.com/p4lang/behavioral-model.git) not found; Searched . Will not run BMv2 tests. (missing: SIMPLE_SWITCH SIMPLE_SWITCH_CLI) – Program 'psa_switch_CLI' (https://github.com/p4lang/behavioral-model.git) not found; Searched . Will not run PSA BMv2 tests. (missing: PSA_SWITCH PSA_SWITCH_CLI) – Performing Test HAVE_OPTION_Wall – Performing Test HAVE_OPTION_Wall - Success – Performing Test HAVE_OPTION_Wextra – Performing Test HAVE_OPTION_Wextra - Success – Performing Test HAVE_OPTION_Wnooverloadedvirtual – Performing Test HAVE_OPTION_Wnooverloadedvirtual - Success – Performing Test HAVE_OPTION_Wnodeprecated – Performing Test HAVE_OPTION_Wnodeprecated - Success – Using the GNU gold linker. – Available extensions CMake Warning at backends/bmv2/CMakeLists.txt:193 (MESSAGE): BMv2 simple switch is not available, not adding v1model BMv2 tests

CMake Warning at backends/bmv2/CMakeLists.txt:199 (MESSAGE): BMv2 PSA switch is not available, not adding PSA BMv2 tests

– Found LLVM 7.0.1 – Added 14 tests to 'ebpf-kernel' (0 xfails) – Added 14 tests to 'ebpf-bcc' (0 xfails) – Added 14 tests to 'ebpf' (0 xfails) – Added 161 tests to 'p4' (0 xfails) – Added 506 tests to 'p4' (4 xfails) – Added 204 tests to 'p14_to_16' (0 xfails) – CTest parallel: -j 8 – Configuring done – Generating done – Build files have been written to: /home/nico/vcs/master-thesis/support/p4c/build

testing in build directory: works

/home/nico/vcs/master-thesis/support/p4c/build

Changing install path

CMAKE_INSTALL_PREFIX cmake .. '-DCMAKE_CXX_FLAGS:STRING=-O3' -DCMAKE_INSTALL_PREFIX=/home/nico/vcs/master-thesis/support/p4c-installation

TODO Get p4utils running (?)

log of python, p4app, p4c installation

[16:16] line:support% virtualenv virtualenv2 Running virtualenv with interpreter /usr/bin/python2 New python executable in /home/nico/vcs/master-thesis/support/virtualenv2/bin/python2 Also creating executable in /home/nico/vcs/master-thesis/support/virtualenv2/bin/python Installing setuptools, pkg_resources, pip, wheel…done. [16:16] line:support%

[16:18] line:p4-utils-nsg% . ~/vcs/master-thesis/support/virtualenv2/bin/activate (virtualenv2) [16:19] line:p4-utils-nsg% which pip /home/nico/vcs/master-thesis/support/virtualenv2/bin/pip (virtualenv2) [16:19] line:p4-utils-nsg%

pip install -e .

Missing python development headers

copying psutil/tests/test_memory_leaks.py -> build/lib.linux-x86_64-2.7/psutil/tests running build_ext building 'psutil._psutil_linux' extension creating build/temp.linux-x86_64-2.7 creating build/temp.linux-x86_64-2.7/psutil x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fdebug-prefix-map=/build/python2.7-UboFgi/python2.7-2.7.16~rc1=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC -DPSUTIL_POSIX=1 -DPSUTIL_VERSION=561 -DPSUTIL_LINUX=1 -I/usr/include/python2.7 -c psutil/_psutil_common.c -o build/temp.linux-x86_64-2.7/psutil/_psutil_common.o psutil/_psutil_common.c:9:10: fatal error: Python.h: No such file or directory #include <Python.h> ^~~~~~~~~~ compilation terminated. error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

root@line:~# apt install python2-dev

installing, but missing mininet.net

(virtualenv2) [16:21] line:p4-utils-nsg% pip install -e "." DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7. Obtaining /home/nico/vcs/master-thesis/support/p4-utils-nsg Requirement already satisfied: setuptools in /home/nico/vcs/master-thesis/support/virtualenv2/lib/python2.7/site-packages (from p4utils==0.2) (40.8.0) Requirement already satisfied: networkx in /home/nico/vcs/master-thesis/support/virtualenv2/lib/python2.7/site-packages (from p4utils==0.2) (2.2) Requirement already satisfied: ipaddress in /home/nico/vcs/master-thesis/support/virtualenv2/lib/python2.7/site-packages (from p4utils==0.2) (1.0.22) Requirement already satisfied: scapy in /home/nico/vcs/master-thesis/support/virtualenv2/lib/python2.7/site-packages (from p4utils==0.2) (2.4.2) Requirement already satisfied: psutil in /home/nico/vcs/master-thesis/support/virtualenv2/lib/python2.7/site-packages (from p4utils==0.2) (5.6.1) Requirement already satisfied: decorator>=4.3.0 in /home/nico/vcs/master-thesis/support/virtualenv2/lib/python2.7/site-packages (from networkx->p4utils==0.2) (4.3.2) Installing collected packages: p4utils Found existing installation: p4utils 0.2 Not uninstalling p4utils at /home/nico/vcs/master-thesis/support/p4-utils-nsg, outside environment /home/nico/vcs/master-thesis/support/virtualenv2 Can't uninstall 'p4utils'. No files were found to uninstall. Running setup.py develop for p4utils Successfully installed p4utils (virtualenv2) [16:21] line:p4-utils-nsg%

log Try2: using virtualenv that uses site packages for using mininet

[17:13] line:support% virtualenv –system-site-packages virtualenv-with-site Running virtualenv with interpreter /usr/bin/python2 New python executable in /home/nico/vcs/master-thesis/support/virtualenv-with-site/bin/python2 Also creating executable in /home/nico/vcs/master-thesis/support/virtualenv-with-site/bin/python Installing setuptools, pkg_resources, pip, wheel…done. [17:23] line:support% . ./virtualenv-with-site/bin/activate (virtualenv-with-site) [17:23] line:support% (virtualenv-with-site) [17:23] line:p4-utils-nsg% pip install -e . (virtualenv-with-site) [17:23] line:p4-utils-nsg% pip install -e . DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7. Obtaining /home/nico/vcs/master-thesis/support/p4-utils-nsg Requirement already satisfied: setuptools in /home/nico/vcs/master-thesis/support/virtualenv-with-site/lib/python2.7/site-packages (from p4utils==0.2) (40.8.0) Collecting networkx (from p4utils==0.2) Requirement already satisfied: ipaddress in /usr/lib/python2.7/dist-packages (from p4utils==0.2) (1.0.17) Requirement already satisfied: scapy in /usr/lib/python2.7/dist-packages (from p4utils==0.2) (2.4.0) Collecting psutil (from p4utils==0.2) Collecting decorator>=4.3.0 (from networkx->p4utils==0.2) Using cached https://files.pythonhosted.org/packages/f1/cd/7c8240007e9716b14679bc217a1baefa4432aa30394f7e2ec40a52b1a708/decorator-4.3.2-py2.py3-none-any.whl Installing collected packages: decorator, networkx, psutil, p4utils Running setup.py develop for p4utils Successfully installed decorator-4.3.2 networkx-2.2 p4utils psutil-5.6.1 (virtualenv-with-site) [17:23] line:p4-utils-nsg% which p4run /home/nico/vcs/master-thesis/support/virtualenv-with-site/bin/p4run (virtualenv-with-site) [17:24] line:p4-utils-nsg%

p4c –target bmv2 –arch v1model –std p4-16 "../p4src/static-mapping.p4" -o "/home/nico/vcs/master-thesis/p4src" ../p4src/static-mapping.p4(80): [–Wwarn=unused] warning: Table ndp_answer is not used; removing table ndp_answer { ^^^^^^^^^^ ../p4src/static-mapping.p4(96): [–Wwarn=unused] warning: Table port2mcast is not used; removing table port2mcast { ^^^^^^^^^^ ../p4src/static-mapping.p4(111): [–Wwarn=unused] warning: Table addr2mcast is not used; removing table addr2mcast { ^^^^^^^^^^ ../p4src/static-mapping.p4(128): [–Wwarn=unused] warning: Table ndp is not used; removing table ndp { ^^^ Switch port mapping: s1: 1:h1 2:h2 3:h3 4:h4 5:sw-cpu

Trying local vagrant VM

libvirtd missing user

root@line:~# libvirtd 2019-03-12 16:39:14.556+0000: 20235: info : libvirt version: 5.0.0, package: 1 (Guido Günther <agx@sigxcpu.org> Wed, 16 Jan 2019 10:31:33 +0100) 2019-03-12 16:39:14.556+0000: 20235: info : hostname: line 2019-03-12 16:39:14.556+0000: 20235: error : virGetUserID:1038 : invalid argument: Failed to parse user 'libvirt-qemu' 2019-03-12 16:39:14.556+0000: 20235: error : virStateInitialize:662 : Initialization of QEMU state driver failed: invalid argument: Failed to parse user 'libvirt-qemu' 2019-03-12 16:39:14.556+0000: 20235: error : daemonRunStateInit:799 : Driver state initialization failed root@line:~# useradd -m libvirt-qemu root@line:~#

root@line:~# strace -fF -e open libvirtd strace: deprecated option -F ignored strace: Process 20602 attached strace: Process 20603 attached strace: Process 20604 attached strace: Process 20605 attached strace: Process 20606 attached strace: Process 20607 attached strace: Process 20608 attached strace: Process 20609 attached strace: Process 20610 attached strace: Process 20611 attached strace: Process 20612 attached strace: Process 20613 attached strace: Process 20614 attached strace: Process 20615 attached strace: Process 20616 attached strace: Process 20617 attached strace: Process 20618 attached [pid 20618] + exited with 0 + [pid 20601] — SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20618, si_uid=0, si_status=0, si_utime=0, si_stime=0} — strace: Process 20619 attached [pid 20619] + exited with 0 + [pid 20601] — SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20619, si_uid=0, si_status=0, si_utime=0, si_stime=0} — strace: Process 20620 attached strace: Process 20621 attached strace: Process 20622 attached [pid 20622] + exited with 0 + [pid 20601] — SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20622, si_uid=0, si_status=0, si_utime=0, si_stime=0} — strace: Process 20623 attached [pid 20623] + exited with 0 + [pid 20621] — SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20623, si_uid=0, si_status=0, si_utime=0, si_stime=0} — strace: Process 20624 attached [pid 20624] + exited with 0 + [pid 20601] — SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20624, si_uid=0, si_status=0, si_utime=0, si_stime=0} — strace: Process 20625 attached [pid 20625] + exited with 0 + [pid 20617] — SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20625, si_uid=0, si_status=0, si_utime=0, si_stime=0} — strace: Process 20626 attached [pid 20626] + exited with 0 + [pid 20601] — SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20626, si_uid=0, si_status=0, si_utime=0, si_stime=0} — strace: Process 20627 attached [pid 20627] + exited with 0 + [pid 20617] — SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20627, si_uid=0, si_status=0, si_utime=0, si_stime=0} — strace: Process 20628 attached [pid 20621] + exited with 0 + strace: Process 20629 attached strace: Process 20630 attached strace: Process 20631 attached strace: Process 20632 attached strace: Process 20633 attached [pid 20631] + exited with 0 + [pid 20633] + exited with 1 + [pid 20630] + exited with 0 + [pid 20628] — SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20630, si_uid=1001, si_status=0, si_utime=0, si_stime=0} — [pid 20632] + exited with 1 + [pid 20629] + exited with 1 + [pid 20628] + exited with 1 + [pid 20601] — SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20628, si_uid=1001, si_status=1, si_utime=1, si_stime=0} — 2019-03-12 16:40:53.098+0000: 20617: info : libvirt version: 5.0.0, package: 1 (Guido Günther <agx@sigxcpu.org> Wed, 16 Jan 2019 10:31:33 +0100) 2019-03-12 16:40:53.098+0000: 20617: info : hostname: line 2019-03-12 16:40:53.098+0000: 20617: error : virQEMUCapsNewForBinaryInternal:4681 : internal error: Failed to probe QEMU binary with QMP: qemu-system-i386: cannot create PID file: Cannot open pid file: Permission denied

2019-03-12 16:40:53.098+0000: 20617: warning : virQEMUCapsLogProbeFailure:4628 : Failed to probe capabilities for /usr/bin/qemu-system-i386: internal error: Failed to probe QEMU binary with QMP: qemu-system-i386: cannot create PID file: Cannot open pid file: Permission denied

strace: Process 20634 attached strace: Process 20635 attached strace: Process 20636 attached strace: Process 20637 attached strace: Process 20638 attached strace: Process 20639 attached [pid 20637] + exited with 0 + [pid 20639] + exited with 1 + [pid 20636] + exited with 0 + [pid 20634] — SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20636, si_uid=1001, si_status=0, si_utime=0, si_stime=0} — [pid 20638] + exited with 1 + [pid 20635] + exited with 1 + [pid 20634] + exited with 1 + [pid 20617] — SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20634, si_uid=1001, si_status=1, si_utime=1, si_stime=0} — 2019-03-12 16:40:53.145+0000: 20617: error : virQEMUCapsNewForBinaryInternal:4681 : internal error: Failed to probe QEMU binary with QMP: qemu-system-x86_64: cannot create PID file: Cannot open pid file: Permission denied

2019-03-12 16:40:53.145+0000: 20617: warning : virQEMUCapsLogProbeFailure:4628 : Failed to probe capabilities for /usr/bin/qemu-system-x86_64: internal error: Failed to probe QEMU binary with QMP: qemu-system-x86_64: cannot create PID file: Cannot open pid file: Permission denied

strace: Process 20640 attached [pid 20640] + exited with 0 + [pid 20617] — SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20640, si_uid=0, si_status=0, si_utime=0, si_stime=0} — strace: Process 20641 attached [pid 20641] + exited with 0 + [pid 20617] — SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20641, si_uid=0, si_status=0, si_utime=0, si_stime=0} — strace: Process 20642 attached [pid 20642] + exited with 2 + [pid 20601] — SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20642, si_uid=0, si_status=2, si_utime=0, si_stime=0} — strace: Process 20643 attached [pid 20643] + exited with 0 + [pid 20617] — SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20643, si_uid=0, si_status=0, si_utime=0, si_stime=0} — [pid 20617] + exited with 0 + [pid 20601] — SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} — ^Cstrace: Process 20601 detached strace: Process 20602 detached strace: Process 20603 detached strace: Process 20604 detached strace: Process 20605 detached strace: Process 20606 detached strace: Process 20607 detached strace: Process 20608 detached strace: Process 20609 detached strace: Process 20610 detached strace: Process 20611 detached strace: Process 20612 detached strace: Process 20613 detached strace: Process 20614 detached strace: Process 20615 detached strace: Process 20616 detached strace: Process 20620 detached

Creating network

Adding hosts:

h1 h2 h3 h4

Adding switches:

Cannot find required executable simple_switch. Please make sure that it is installed and available in your $PATH: (home/nico/vcs/master-thesis/support/virtualenv-with-site/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/home/nico/vcs/master-thesis/support/p4c/build) (virtualenv-with-site) root@line:/home/nico/vcs/master-thesis/p4app#

TODO Setup test VM [dual stack] for Jool:

TODO Setup test VM [dual stack] for tayga:

TODO Port to Hardware

NetPFGA documentation

Port mapping

nf0

DONE Get access to tofino: no, NDA issues

DONE Get NetFPGA running

DONE Understand the simulations part -> not atm

DONE Install vivado

DONE Install SDNET

DONE fix license issue

make[1]: Entering directory '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/testdata' echo ok ok make[1]: Leaving directory '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/testdata' sdnet ./src/switch_calc.sdnet -skipEval -busType axi -busWidth 256 -singlecontrolport -workDir nf_sume_sdnet_ip -altVivadoScripts Xilinx SDNet Compiler version 2018.2, build 2342300

Cannot obtain license make: * [Makefile:67: compile_no_cpp_test] Error 1 nico@loch:~/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc$

TODO Testing / compiling / uploading stuff to the NetPFGA –

https://github.com/NetFPGA/P4-NetFPGA-public/wiki/Tutorial-Assignments

DONE try 1

According to DO NOT USE THIS:: ==> https://github.com/NetFPGA/NetFPGA-SUME-public/wiki/NetFPGA-SUME-Reference-Learning-Switch

root@loch:~/projects/P4-NetFPGA/tools/scripts# ./nf_test.py hw –major learning –minor sw Please set the environment variable 'SUME_FOLDER' to point to the local NetFPGA source Traceback (most recent call last): File "./nf_test.py", line 632, in <module> identifyWorkDir() File "./nf_test.py", line 418, in identifyWorkDir project = os.path.basename(os.path.abspath(os.environ['NF_DESIGN_DIR'])) File "/usr/lib/python2.7/UserDict.py", line 40, in getitem raise KeyError(key) KeyError: 'NF_DESIGN_DIR' root@loch:~/projects/P4-NetFPGA/tools/scripts#

Trying https://github.com/NetFPGA/P4-NetFPGA-public/wiki/Tutorial-Assignments

root@loch:~/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/src# mv switch_calc.p4 switch_calc_orig.p4 root@loch:~/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/src# ln -s switch_calc_solution.p4 switch_calc.p4 root@loch:~/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/src#

root@loch:~/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc# make make -C src/ clean make[1]: Entering directory '/root/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/src' rm -f *.sdnet *.tbl .sdnet_switch_info.dat make[1]: Leaving directory 'root/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/src' make -C testdata clean make[1]: Entering directory '/root/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/testdata' rm -f .pcap *.txt *.pyc *.axi config_writes. *_reg_defines.py make[1]: Leaving directory 'root/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/testdata' rm -rf nf_sume_sdnet_ip rm -f rm -f sw/config_tables.c make -C src/ make[1]: Entering directory '/root/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/src' p4c-sdnet -o .sdnet –sdnet_info .sdnet_switch_info.dat _solution.p4 make[1]: p4c-sdnet: Command not found make[1]: * [Makefile:34: all] Error 127 make[1]: Leaving directory '/root/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/src' make: * [Makefile:60: frontend] Error 2 root@loch:~/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc#

As nico:

nico@loch:~/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc$ make make -C src/ clean make[1]: Entering directory '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/src' rm -f *.sdnet *.tbl .sdnet_switch_info.dat make[1]: Leaving directory '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/src' make -C testdata/ clean make[1]: Entering directory '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/testdata' rm -f *.pcap *.txt *.pyc *.axi config_writes.* *_reg_defines.py make[1]: Leaving directory '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/testdata' rm -rf nf_sume_sdnet_ip/ rm -f rm -f sw/config_tables.c make -C src/ make[1]: Entering directory '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/src' p4c-sdnet -o switch_calc.sdnet --sdnet_info .sdnet_switch_info.dat switch_calc_solution.p4 cpp: error: switch_calc_solution.p4: No such file or directory cpp: warning: ‘-x c’ after last input file has no effect cpp: fatal error: no input files compilation terminated. error: Preprocessor returned exit code 256; aborting compilation error: 1 errors encountered, aborting compilation make[1]: *** [Makefile:34: all] Error 1 make[1]: Leaving directory '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/src' make: *** [Makefile:60: frontend] Error 2 nico@loch:~/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc$

nico@loch:~/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/switch_calc/src$ cp switch_calc.p4 switch_calc_solution.p4

$ cd $P4_PROJECT_DIR/nf_sume_sdnet_ip/SimpleSumeSwitch

$ ./vivado_sim.bash.

DONE try 2: create an almost empty p4 project based on switch_calc

DONE frontend build: ok

DONE testdata: skipped

DONE compile_cpp_test: ok

DONE run_scripts: ok

TODO cpp_test: error

sed -i 's/xsim\.dir\/xsc\/dpi\.so/dpi\.so/g' nf_sume_sdnet_ip/SimpleSumeSwitch/vivado_sim.bash sed -i 's/xsim\.dir\/xsc\/dpi\.so/dpi\.so/g' nf_sume_sdnet_ip/SimpleSumeSwitch/vivado_sim_waveform.bash

sed -i 's/glbl_sim/glbl/g' nf_sume_sdnet_ip/SimpleSumeSwitch/vivado_sim_waveform.bash sed -i 's/SimpleSumeSwitch_tb_sim#work.glbl/SimpleSumeSwitch_tb/g' nf_sume_sdnet_ip/SimpleSumeSwitch/vivado_sim_waveform.bash cp src/*.tbl nf_sume_sdnet_ip/SimpleSumeSwitch/ cp: cannot stat 'src/*.tbl': No such file or directory make: * [Makefile:23: cpp_test] Error 1 [23:12] loch:minip4%

DONE Removing cp of *tbl

DONE Removing pcap copy

TODO removing all cp's

DONE try 3: good until step 4; broken at the simulation

log 1

[15:26] rainbow:~% echo $P4_PROJECT_DIR /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4 [15:26] rainbow:~% [15:26] rainbow:~% cd $P4_PROJECT_DIR && make

Compiling module work.xpm_fifo_base(COMMON_CLOCK=0,FIF… Compiling module work.xpm_fifo_async(FIFO_MEMORY_TYPE=… Compiling module work.S_SYNCER_for_S_SYNCER_for_TopDep… Compiling module work.xpm_fifo_base(FIFO_MEMORY_TYPE=2… Compiling module work.xpm_fifo_sync(FIFO_MEMORY_TYPE="… Compiling module work.xpm_fifo_base(FIFO_MEMORY_TYPE=1… Compiling module work.xpm_fifo_sync(FIFO_MEMORY_TYPE="… Compiling module work.xpm_fifo_base(COMMON_CLOCK=0,FIF… Compiling module work.xpm_fifo_async(FIFO_MEMORY_TYPE=… Compiling module work.xpm_fifo_base(COMMON_CLOCK=0,FIF… Compiling module work.xpm_fifo_async(FIFO_MEMORY_TYPE=… Compiling module work.S_SYNCER_for_TopDeparser Compiling module work.xpm_memory_base(MEMORY_TYPE=1,ME… Compiling module work.xpm_fifo_base(FIFO_MEMORY_TYPE=2… Compiling module work.xpm_fifo_sync(FIFO_MEMORY_TYPE="… Compiling module work.xpm_fifo_base(COMMON_CLOCK=0,FIF… Compiling module work.xpm_fifo_async(FIFO_MEMORY_TYPE=… Compiling module work.S_SYNCER_for__OUT_ Compiling module work.S_CONTROLLER_SimpleSumeSwitch Compiling module work.SimpleSumeSwitch Compiling module work.TB_System_Stim Compiling module work.Check Compiling module work.SimpleSumeSwitch_tb Compiling module work.glbl ERROR: [XSIM 43-3409] Failed to compile generated C file xsim.dir/work.SimpleSumeSwitch_tb#work.glbl/obj/xsim_3.c. ERROR: [XSIM 43-3915] Encountered a fatal error. Cannot continue. Exiting… [15:29] rainbow:SimpleSumeSwitch% ./vivado_sim.bash

trying to find the error in the generated c code

[15:29] rainbow:SimpleSumeSwitch% find . -name xsim_3.c ./xsim.dir/work.SimpleSumeSwitch_tb#work.glbl/obj/xsim_3.c

error seems to occur in xelab

DONE try 4: vivado 2018.2 instead of 2018.3

Probably both ok - errors are the same

DONE new error: /usr/include/stdio.h:27:36: fatal error: bits/libc-header-start.h: No such file or directory

apt-get install gcc-multilib g++-multilib

DONE same error

Compiling module work.glbl ERROR: [XSIM 43-3409] Failed to compile generated C file xsim.dir/work.SimpleSumeSwitch_tb#work.glbl/obj/xsim_3.c. ERROR: [XSIM 43-3915] Encountered a fatal error. Cannot continue. Exiting… [17:47] rainbow:SimpleSumeSwitch%

DONE with verbosity / fixing ncurses dependency

ICR Memory Usage: 5072KB, 18432KB opt/Xilinx/Vivado/2018.2/data../tps/llvm/3.1/lnx64.o/bin/clang -fPIC -c -std=gnu89 -nobuiltininc -nostdinc++ -w -Wl,–unres olved-symbols=ignore-in-object-files -fbracket-depth=1048576 -I/opt/Xilinx/Vivado/2018.2/data/../tps/llvm/3.1/lnx64.o/bin/../li b/clang/3.1/include -fPIC -m64 -I"/opt/Xilinx/Vivado/2018.2/data/xsim/include" "xsim.dir/work.SimpleSumeSwitch_tb#work.glbl/ob j/xsim_3.c" -O0 -sim -o "xsim.dir/work.SimpleSumeSwitch_tb#work.glbl/obj/xsim_3.lnx64.o" -DXILINX_SIMULATOR opt/Xilinx/Vivado/2018.2/data../tps/llvm/3.1/lnx64.o/bin/clang: error while loading shared libraries: libncurses.so.5: cannot open shared object file: No such file or directory ERROR: [XSIM 43-3409] Failed to compile generated C file xsim.dir/work.SimpleSumeSwitch_tb#work.glbl/obj/xsim_3.c. ERROR: [XSIM 43-3915] Encountered a fatal error. Cannot continue. Exiting… [20:00] rainbow:SimpleSumeSwitch%

root@rainbow:~# apt install libncurses5-dev

[20:02] rainbow:~% ldd opt/Xilinx/Vivado/2018.2/data../tps/llvm/3.1/lnx64.o/bin/clang linux-vdso.so.1 (0x00007ffda6bf6000) libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f8e23208000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f8e231e7000) libncurses.so.5 => not found librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f8e231dc000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f8e231d6000) libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f8e22ff5000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f8e22ea5000) libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f8e22e8b000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f8e22ca0000) /lib64/ld-linux-x86-64.so.2 (0x00007f8e2323f000) [20:02] rainbow:~%

root@rainbow:~# apt install libncurses5

DONE Run step 4: ok fully works now with switch_calc_headrs and gen_testdata

command

cd $P4_PROJECT_DIR && make

DONE commented out the test data step to progress

TODO re-enable test data cp step => data required later

all: clean frontend compile_no_cpp_test run_scripts cp src/*.tbl ${SDNET_OUT_DIR}/${P4_SWITCH}/ cp testdata/*.txt ${SDNET_OUT_DIR}/${P4_SWITCH}/ cp testdata/*.axi ${SDNET_OUT_DIR}/${P4_SWITCH}/

sed -i 's/glbl_sim/glbl/g' nf_sume_sdnet_ip/SimpleSumeSwitch/vivado_sim_waveform.bash sed -i 's/SimpleSumeSwitch_tb_sim#work.glbl/SimpleSumeSwitch_tb/g' nf_sume_sdnet_ip/SimpleSumeSwitch/vivado_sim_waveform.bash cp src/*.tbl nf_sume_sdnet_ip/SimpleSumeSwitch/ cp testdata/*.txt nf_sume_sdnet_ip/SimpleSumeSwitch/ cp: cannot stat 'testdata/*.txt': No such file or directory make: * [Makefile:17: all] Error 1 [15:46] rainbow:minip4%

In testdata/Makefile:

all: echo ok

all2: ./gen_testdata.py ${SUME_SDNET}/bin/pcap2axi --output Packet_in.axi --bus_width 256 src.pcap ${SUME_SDNET}/bin/pcap2axi –output Packet_expect.axi –bus_width 256 dst.pcap

Changing back to all:

make -C testdata/ make[1]: Entering directory '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/testdata' ./gen_testdata.py /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/bin/pcap2axi –output Packet_in.axi –bus_width 256 src.pcap Traceback (most recent call last): File "/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/bin/pcap2axi", line 108, in <module> write_to_file(args.file_pcap, args.output) File "/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/bin/pcap2axi", line 88, in write_to_file for pkt in rdpcap(file_in): File "/usr/lib/python2.7/dist-packages/scapy/utils.py", line 728, in rdpcap with PcapReader(filename) as fdesc: File "/usr/lib/python2.7/dist-packages/scapy/utils.py", line 751, in call filename, fdesc, magic = cls.open(filename) File "/usr/lib/python2.7/dist-packages/scapy/utils.py", line 778, in open fdesc = open(filename, "rb") IOError: [Errno 2] No such file or directory: 'src.pcap' make[1]: * [Makefile:5: all] Error 1 make[1]: Leaving directory '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/testdata' make: * [Makefile:32: frontend] Error 2 [15:47] rainbow:minip4%

TODO debug gen_testdata.py

DONE Run step 5: ok

command

cd $P4_PROJECT_DIR/nf_sume_sdnet_ip/SimpleSumeSwitch && ./vivado_sim.bash

DONE Run step 6: ok => config_writes

command

cd $P4_PROJECT_DIR && make config_writes

DONE Run step 7: ok - install sume library core

command

cd $P4_PROJECT_DIR && make uninstall_sdnet && make install_sdnet

log

INFO: [IP_Flow 19-234] Refreshing IP repositories INFO: [IP_Flow 19-1700] Loaded user IP repository '/home/nico/projects/P4-NetFPGA/lib/hw'. WARNING: [IP_Flow 19-3656] If you move the project, the path for repository '/home/nico/projects/P4-NetFPGA/lib/hw' may become invalid. A better location for the repository would be in a path adjacent to the project. (Current project location is '/home/nico/projects/P4-NetFPGA/lib/hw/contrib/cores/nf_sume_sdnet_ip/ip_proj'.)

INFO: [IP_Flow 19-861] XGUI layout file basename "xgui/nf_sume_sdnet_v1_0.tcl" does not have the current IP <name>_v<version> format. If the IP name or version was changed recently, recreate this file to update the file format. INFO: [IP_Flow 19-2181] Payment Required is not set for this core. INFO: [IP_Flow 19-2187] The Product Guide file is missing. INFO: [Ipptcl 7-1486] check_integrity: Integrity check passed.

INFO: [Common 17-206] Exiting Vivado at Sat May 18 15:18:13 2019… make[1]: Leaving directory '/home/nico/projects/P4-NetFPGA/lib/hw/contrib/cores/nf_sume_sdnet_ip' [15:18] rainbow:minip4% cd $P4_PROJECT_DIR && make uninstall_sdnet && make install_sdnet

DONE run step 8: just copies a python script

run command

cd $NF_DESIGN_DIR/test/sim_switch_default && make

log

[15:18] rainbow:minip4% cd $NF_DESIGN_DIR/test/sim_switch_default && make rm -f config_writes.py* rm -f *.pyc cp home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/testdata/config_writes.py . [15:18] rainbow:sim_switch_default%

DONE run step 9: ok sume simulation: fails with various errors, python and cp failures

DONE run command

cd $SUME_FOLDER && ./tools/scripts/nf_test.py sim –major switch –minor default

DONE python indent bug

update_compile_order: Time (s): cpu = 00:00:17 ; elapsed = 00:00:09 . Memory (MB): peak = 1995.594 ; gain = 0.016 ; free physic al = 21975 ; free virtual = 33161 loading libsume.. Traceback (most recent call last): File "/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/sim_switch_de fault/run.py", line 42, in <module> import config_writes File "/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/sim_switch_de fault/config_writes.py", line 7

-> inserting pass in def config_tables()

DONE post python cp error: different error after fixing python

= Work directory is /tmp/nico/test/simple_sume_switch = Setting up test in /tmp/nico/test/simple_sume_switch/sim_switch_default cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/nf_interface_0_log.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/nf_interface_0_stim.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/nf_interface_0_expected.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/nf_interface_1_log.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/nf_interface_1_stim.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/nf_interface_1_expected.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/nf_interface_2_log.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/nf_interface_2_stim.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/nf_interface_2_expected.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/nf_interface_3_log.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/nf_interface_3_stim.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/nf_interface_3_expected.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/dma_0_log.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/dma_0_expected.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/reg_stim.log': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/reg_expect.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/reg_stim.axi': No such file or directory = Running test /tmp/nico/test/simple_sume_switch/sim_switch_default … using cmd ['/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/sim_switch_default/run.py', '–sim', 'xsim'] [15:21] rainbow:P4-NetFPGA%

DONE "add_wave failed" (post python fix) -> go back to step 4

ERROR: [Wavedata 42-471] Note: Nothing was found for the following items: top_tb/top_sim/nf_datapath_0/nf_sume_sdnet_wrapper_1/inst/SimpleSumeSwitch_inst/const_reg_rw_0 ERROR: [Common 17-39] 'add_wave' failed due to earlier errors.

while executing "add_wave $const_reg_ip " (file "/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/hw/tcl/simple_sume_switch_sim.tcl" line 328) INFO: [Common 17-206] Exiting Vivado at Sat May 18 15:31:59 2019… make: * [Makefile:121: sim] Error 1 make: Leaving directory '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test' 512 = Work directory is /tmp/nico/test/simple_sume_switch = Setting up test in /tmp/nico/test/simple_sume_switch/sim_switch_default cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/nf_interface_0_log.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/nf_interface_1_log.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/nf_interface_2_log.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/nf_interface_3_log.axi': No such file or directory cp: cannot stat '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/dma_0_log.axi': No such file or directory = Running test /tmp/nico/test/simple_sume_switch/sim_switch_default … using cmd ['/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/sim_switch_default/run.py', '–sim', 'xsim'] [15:31] rainbow:P4-NetFPGA%

DONE run step 10: compiling the bitstream [takes hours]

command

cd $NF_DESIGN_DIR && make

cd $NF_DESIGN_DIR && make 2>&1 | tee compilelog

log

Ignoring previous errors and continuing with this step => does not work, ends with:

Opening simple_sume_switch XPR project

Scanning sources… Finished scanning sources INFO: [IP_Flow 19-234] Refreshing IP repositories INFO: [IP_Flow 19-1700] Loaded user IP repository '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/hw/ip_repo'. INFO: [IP_Flow 19-2313] Loaded Vivado IP repository '/opt/Xilinx/Vivado/2018.2/data/ip'.

Opening simple_sume_switch Implementation design

ERROR: [Common 17-69] Command failed: Run 'impl_1' has not been launched. Unable to open Vivado%

DONE try 2: Run 'impl_1' has not been launched. Unable to open

export simple_sume_switch project to SDK

source tcl/export_hardware.tcl

Opening simple_sume_switch XPR project

Opening simple_sume_switch Implementation design

ERROR: [Common 17-69] Command failed: Run 'impl_1' has not been launched. Unable to open Vivado%

DONE try3: debug the REAL failing command

command

vivado -mode batch -source tcl/simple_sume_switch.tcl

log

ERROR: [BD 41-171] The modes of the interface pins 'cfg_interrupt'(Slave) and 'pcie3_cfg_interrupt'(Slave) are incompatible. They cannot be connected. ERROR: [BD 5-3] Error: running connect_bd_intf_net. ERROR: [Common 17-39] 'connect_bd_intf_net' failed due to earlier errors.

while executing "connect_bd_intf_net -intf_net nf_riffa_dma_1_pcie3_cfg_interrupt [get_bd_intf_pins nf_riffa_dma_1/cfg_interrupt] [get_bd_intf_pins pcie3_7x_1/pcie3_cf…" (procedure "create_hier_cell_dma_sub" line 141) invoked from within "create_hier_cell_dma_sub [current_bd_instance .] dma_sub" (procedure "create_root_design" line 68) invoked from within "create_root_design """ (file "./tcl/control_sub.tcl" line 729)

while executing "source ./tcl/control_sub.tcl" (file "tcl/simple_sume_switch.tcl" line 89)

…. after bugfixing:

Creating bitmap… Creating bitstream… Bitstream compression saved 132634496 bits. Writing bitstream ../bitfiles/simple_sume_switch.bit… INFO: [Vivado 12-1842] Bitgen Completed Successfully. INFO: [Common 17-83] Releasing license: Implementation 100 Infos, 51 Warnings, 1 Critical Warnings and 0 Errors encountered. write_bitstream completed successfully write_bitstream: Time (s): cpu = 00:02:39 ; elapsed = 00:03:20 . Memory (MB): peak = 4301.938 ; gain = 944.953 ; free physical = 23157 ; free virtual = 31451

INFO: [Common 17-206] Exiting Vivado at Mon May 20 13:07:53 2019… make[1]: Leaving directory '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/hw' [13:07] rainbow:simple_sume_switch%

TODO clarifying "simple_sume_switch.tcl"

DONE What is it?

Seems to be some kind of batch system for vivado

DONE Who or what created it?

Seems to be manually / from the project / not generated

DONE What is it trying to do?

Assuming connecting "things" on the "board".

DONE Why is it incompatible?

DONE Trying to resolve the error 1: commenting out line 538

[get_bd_intf_pins nf_riffa_dma_1/cfg_interrupt] [get_bd_intf_pins pcie3_7x_1/pcie3_cfg_interrupt]

DONE try4 going back to step 10 -> fails

ume_switch/hw/project/simple_sume_switch.runs/control_sub_m00_data_fifo_0_synth_1/runme.log control_sub_s00_data_fifo_0_synth_1: /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/hw/project/simple_sume_switch.runs/control_sub_s00_data_fifo_0_synth_1/runme.log control_sub_auto_cc_0_synth_1: /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/hw/project/simple_sume_switch.runs/control_sub_auto_cc_0_synth_1/runme.log synth_1: /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/hw/project/simple_sume_switch.runs/synth_1/runme.log [Fri May 24 11:55:57 2019] Launched impl_1… Run output will be captured here: /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/hw/project/simple_sume_switch.runs/impl_1/runme.log launch_runs: Time (s): cpu = 00:00:34 ; elapsed = 00:01:10 . Memory (MB): peak = 2538.609 ; gain = 1199.879 ; free physical = 28377 ; free virtual = 34012

[Fri May 24 11:55:57 2019] Waiting for impl_1 to finish… [Fri May 24 12:39:07 2019] impl_1 finished wait_on_run: Time (s): cpu = 00:26:26 ; elapsed = 00:43:10 . Memory (MB): peak = 2538.609 ; gain = 0.000 ; free physical = 28208 ; free virtual = 34003

ERROR: [Common 17-69] Command failed: Run 'impl_1' has not been launched. Unable to open Vivado% q

DONE try5: error: No IP matching VLNV 'NetFPGA:NetFPGA:nf_sume_sdnet:*' was found

[11:52] rainbow:hw% vivado -mode batch -source tcl/simple_sume_switch.tcl …

### set NF_10G_INTERFACE3_BASEADDR $M07_BASEADDR ### set NF_10G_INTERFACE3_HIGHADDR $M07_HIGHADDR ### set NF_10G_INTERFACE3_SIZEADDR $M07_SIZEADDR ### set NF_RIFFA_DMA_BASEADDR $M08_BASEADDR ### set NF_RIFFA_DMA_HIGHADDR $M08_HIGHADDR ### set NF_RIFFA_DMA_SIZEADDR $M08_SIZEADDR Wrote : </home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/hw/project/simple_sume_switch.srcs/sources_1/bd/control_sub/control_sub.bd>

ERROR: [Coretcl 2-1134] No IP matching VLNV 'NetFPGA:NetFPGA:nf_sume_sdnet:*' was found. Please check your repository configuration. INFO: [Common 17-206] Exiting Vivado at Sat May 25 11:52:01 2019…

DONE try6: go back to clean netpfga-live, diff all sources

[13:44] rainbow:~% diff -ru ~/P4-NetFPGA-live-clean/tools ~/projects/P4-NetFPGA/tools Only in /home/nico/projects/P4-NetFPGA/tools/scripts/NFTest: testcheck.pyc diff -ru /home/nico/P4-NetFPGA-live-clean/tools/settings.sh /home/nico/projects/P4-NetFPGA/tools/settings.sh — /home/nico/P4-NetFPGA-live-clean/tools/settings.sh 2019-05-25 11:55:45.655636066 ~~0200 ++~~ /home/nico/projects/P4-NetFPGA/tools/settings.sh 2019-05-13 11:49:02.122265641 +0200 @@ -28,7 +28,8 @@

-export P4_PROJECT_NAME=switch_calc +export P4_PROJECT_NAME=switch_calc +export P4_PROJECT_NAME=minip4 export NF_PROJECT_NAME=simple_sume_switch export SUME_FOLDER=${HOME}/projects/P4-NetFPGA export SUME_SDNET=${SUME_FOLDER}/contrib-projects/sume-sdnet-switch @@ -47,4 +48,3 @@ export DRIVER_FOLDER=${SUME_FOLDER}/lib/sw/std/driver/${DRIVER_NAME} export APPS_FOLDER=${SUME_FOLDER}/lib/sw/std/apps/${DRIVER_NAME} export HWTESTLIB_FOLDER=${SUME_FOLDER}/lib/sw/std/hwtestlib

[13:44] rainbow:~%

DONE try7: restart from beginning in minip4 alongside try6

steps 1…8 ok
step 9: fails to cp axi files
step 9: before that a python error

DONE try8: fix python error in config_writes.py: script is generated

update_compile_order: Time (s): cpu = 00:00:17 ; elapsed = 00:00:09 . Memory (MB): peak = 2003.578 ; gain = 8.004 ; free physical = 27661 ; free virtual = 33990 loading libsume.. Traceback (most recent call last): File "/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/sim_switch_default/run.py", line 42, in <module> import config_writes File "/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/sim_switch_default/config_writes.py", line 7

^ IndentationError: expected an indented block while executing "exec python $::env(NF_DESIGN_DIR)/test/${test_name}/run.py" invoked from within "set output [exec python $::env(NF_DESIGN_DIR)/test/${test_name}/run.py]" (file "/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/hw/tcl/simple_sume_switch_sim.tcl" line 177) INFO: [Common 17-206] Exiting Vivado at Sat May 25 13:45:13 2019… make: * [Makefile:121: sim] Error 1 make: Leaving directory '/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test' 512 = Work directory is /tmp/nico/test/simple_sume_switch = Setting up test in /tmp/nico/test/simple_sume_switch/sim_switch_default

config_writes.py

[13:50] rainbow:~% find ~/P4-NetFPGA-live-clean -name config_writes.py [13:50] rainbow:~%

File does not EXIST in original repo -> might be created in step6?

"Generate the scripts that can be used in the NetFPGA SUME simulations to configure the table entries.

$ cd $P4_PROJECT_DIR && make config_writes "

[13:50] rainbow:~% find ~/projects/P4-NetFPGA -name config_writes.py /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/testdata/config_writes.py /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/sim_switch_default/config_writes.py [13:53] rainbow:~%

[13:53] rainbow:~% grep -r config_writes.py /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4 home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/vivado.log: File "/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/sim_switch_default/config_writes.py", line 7 /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/sim_switch_default/Makefile: cp ${P4_PROJECT_DIR}/testdata/config_writes.py . home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/sim_switch_default/Makefile: rm -f config_writes.py* /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/sim_switch_ctrlWrites/Makefile: cp ${P4_PROJECT_DIR}/testdata/config_writes.py . /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/sim_switch_ctrlWrites/Makefile: rm -f config_writes.py* /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/Makefile: ${SUME_SDNET}/bin/gen_config_writes.py ${SDNET_OUT_DIR}/${P4_SWITCH}/config_writes.txt ${P4_SWITCH_BASE_ADDR} testdata [13:56] rainbow:~%

Likely:

/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/Makefile: ${SUME_SDNET}/bin/gen_config_writes.py ${SDNET_OUT_DIR}/${P4_SWITCH}/config_writes.txt ${P4_SWITCH_BASE_ADDR} testdata

/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch [14:01] rainbow:sume-sdnet-switch% ls bin conv_p414_cmds gen_P4_SWITCH_externs.py libtcam_templates.pyc nf_sim_tools.pyc extern_data.py gen_P4_SWITCH_regs.py make_config_tables.py p4_px_tables.py extern_data.pyc libcam_templates.py make_new_p4_proj.py pcap2axi gen_config_fsm_writes.py libcam_templates.pyc make_regs_addressable.py sss_sume_metadata.py gen_config_writes.py liblpm_templates.py modify_P4_SWITCH_tb.py sss_sume_metadata.pyc gen_P4_SWITCH_API.py liblpm_templates.pyc nf_sim_compare_axi_logs.py gen_P4_SWITCH_CLI.py libtcam_templates.py nf_sim_tools.py [14:01] rainbow:sume-sdnet-switch%

sim_config = 'config_writes.py' hw_config = 'config_writes.sh'

DONE try9: debug the script that generates the script that generates the error

[14:01] rainbow:sume-sdnet-switch% pwd /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch [14:01] rainbow:sume-sdnet-switch% ls bin conv_p414_cmds gen_P4_SWITCH_externs.py libtcam_templates.pyc nf_sim_tools.pyc extern_data.py gen_P4_SWITCH_regs.py make_config_tables.py p4_px_tables.py extern_data.pyc libcam_templates.py make_new_p4_proj.py pcap2axi gen_config_fsm_writes.py libcam_templates.pyc make_regs_addressable.py sss_sume_metadata.py gen_config_writes.py liblpm_templates.py modify_P4_SWITCH_tb.py sss_sume_metadata.pyc gen_P4_SWITCH_API.py liblpm_templates.pyc nf_sim_compare_axi_logs.py gen_P4_SWITCH_CLI.py libtcam_templates.py nf_sim_tools.py

Find the input file to find the script call directory

[14:04] rainbow:sume-sdnet-switch% find ~/projects/P4-NetFPGA -name config_writes.txt /home/nico/projects/P4-NetFPGA/lib/hw/contrib/cores/nf_sume_sdnet_ip/SimpleSumeSwitch/config_writes.txt /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/nf_sume_sdnet_ip/SimpleSumeSwitch/config_writes.txt /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/test/ip_repo/contrib/cores/nf_sume_sdnet_ip/SimpleSumeSwitch/config_writes.txt [14:08] rainbow:sume-sdnet-switch%

Input data in nf_sume_sdnet_ip is:

<addr, data>: (00000020, 00000001) <addr, data>: (00000020, 00000000)

Original call in the Makefile:

[14:10] rainbow:minip4% make config_writes /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/bin/gen_config_writes.py nf_sume_sdnet_ip/SimpleSumeSwitch/config_writes.txt 0x44020000 testdata [14:10] rainbow:minip4%

Understading gen_config_writes.py:

def main(): parser = argparse.ArgumentParser() parser.add_argument('filename', type=str, help="the config_writes.txt file") parser.add_argument('baseaddr', type=str, help="the base address of the P4_SWITCH") parser.add_argument('outdir', type=str, help="the name of the output directory") args = parser.parse_args()

dic = parse_config_writes(args.filename) new_dic = remove_init_addresses(dic) write_sim_config(new_dic, int(args.baseaddr, 0), args.outdir) write_hw_config(new_dic, int(args.baseaddr, 0), args.outdir)

read arguments, create a dictionary by removing init addresses (why? which?), create the two output files, one of them being config_writes.py that does not have any lines.

def parse_config_writes(filename): regex = r"<addr, data>: $([abcdefABCDEF\d]*), ([abcdefABCDEF\d]*)$" dic = collections.OrderedDict() i = 0 with open(filename) as f: for line in f: searchObj = re.match(regex, line) if searchObj is not None: dic[i] = (searchObj.group(1), searchObj.group(2)) else: print >> sys.stderr, "ERROR: encountered unexpected line in file: \n", line sys.exit(1) i += 1 return dic

Looks for all matching lines, errors out if wrong lines are in there.

def remove_init_addresses(dic): result = collections.OrderedDict() for (index, tup) in dic.iteritems(): if tup[0][-2:] != "20": result[index] = tup return result

Adding debug:

dic = parse_config_writes(args.filename) print("orig dic: {}".format(dic)) new_dic = remove_init_addresses(dic) print("new dic: {}".format(new_dic)) write_sim_config(new_dic, int(args.baseaddr, 0), args.outdir) write_hw_config(new_dic, int(args.baseaddr, 0), args.outdir)

Output:

nfig_writes.txt 0x44020000 testdata [14:10] rainbow:minip4% make config_writes /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/bin/gen_config_writes.py nf_sume_sdnet_ip/SimpleSumeSwitch/config_writes.txt 0x44020000 testdata orig dic: OrderedDict([(0, ('00000020', '00000001')), (1, ('00000020', '00000000'))]) new dic: OrderedDict() [14:15] rainbow:minip4%

-> Problem seems to be that no addresses are left. Why?

DONE try10: find out, why nf_sume_sdnet_ip/SimpleSumeSwitch/config_writes.txt has too less content

DONE find out what generates config_writes.txt

Seems to be step 5:

[14:22] rainbow:SimpleSumeSwitch% pwd /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/nf_sume_sdnet_ip/SimpleSumeSwitch [14:23] rainbow:SimpleSumeSwitch% ls -lh config_writes.txt -rw-rw-r– 1 nico nico 140 May 25 14:21 config_writes.txt [14:23] rainbow:SimpleSumeSwitch% date Sat 25 May 2019 02:23:41 PM CEST [14:23] rainbow:SimpleSumeSwitch%

DONE Debug vivado_sim.bash -> run w/ x11 output, also vivado_sim_waveform.bash

Open GUI, pressing "play" button, getting different / new errors

[SW] CAM_Init() - done [SW] CAM_EnableDevice() - start SV_write_control()- start SV_write_control()- done SV_read_control()- start SV_read_control()- done SV_write_control()- start SV_write_control()- done [SW] CAM_EnableDevice() - done [2420698] INFO: finished packet stimulus file [2735572] ERROR: tuple mismatch for packet 1 expected < tuple_out_digest_data, tuple_out_sume_metadata > = < 0000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000001010000 > actual < tuple_out_digest_data, tuple_out_sume_metadata > = < 0000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000010000 > $finish called at time : 2735572 ps : File "/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/nf_sume_sdnet_ip/SimpleSumeSwitch/Testbench/Check.v" Line 120

Error message created in /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/nf_sume_sdnet_ip/SimpleSumeSwitch/Testbench/Check.v

Same error on shell only version:

projects/minip4/nf_sume_sdnet_ip/SimpleSumeSwitch/S_BRIDGERs.HDL/xpm_memory.sv [SW] CAM_Init() - start [SW] CAM_Init() - done [SW] CAM_EnableDevice() - start SV_write_control()- start SV_write_control()- done SV_read_control()- start SV_read_control()- done SV_write_control()- start SV_write_control()- done [SW] CAM_EnableDevice() - done [2420698] INFO: finished packet stimulus file [2735572] ERROR: tuple mismatch for packet 1 expected < tuple_out_digest_data, tuple_out_sume_metadata > = < 0000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000001010000 > actual < tuple_out_digest_data, tuple_out_sume_metadata > = < 0000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000010000 > $finish called at time : 2735572 ps : File "/home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/minip4/nf_sume_sdnet_ip/SimpleSumeSwitch/Testbench/Check.v" Line 120 exit INFO: [Common 17-206] Exiting xsim at Sat May 25 14:38:05 2019... [14:38] rainbow:SimpleSumeSwitch% echo $? 0 [14:38] rainbow:SimpleSumeSwitch%

Analysing Makefile in testdata + scripts

get_testdata.py: generates some pcap with some packets

Need to find out import sss_sdnet_tuples sss_sdnet_tuples.clear_tuple_files()

Result of this script is src.pcap and dst.pcap.

Is the lookup table related to the devices?

NUM_KEYS = 4 lookup_table = { 0: 0x00000001, 1: 0x00000010, 2: 0x00000100, 3: 0x00001000 }

Where are in/out ports?!

Modifying / adjusting P4 code to mirror input packets

switch_calc_headers creates some headers

some specific packet, uses bind_layers

DONE try11: fixing gen_testdata, adding p4 code for mirroring

Failure again at step 5:

me_sdnet_ip/SimpleSumeSwitch/S_BRIDGERs.HDL/xpm_memory.sv Info: [XPM_MEMORY 20-2] MEMORY_INIT_FILE (none), MEMORY_INIT_PARAM together specify no memory initialization. Initial memory contents will be all 0's. SimpleSumeSwitch_tb.SimpleSumeSwitch_i.S_SYNCER_for__OUT_.lahsy4kevbbz5f1pl25cndeyi9crlj_812.gnuram_async_fifo.xpm_fifo_base_inst.gen_sdpram.xpm_memory_base_inst.config_drc 0 Time: 1 ps Iteration: 0 Process: /SimpleSumeSwitch_tb/SimpleSumeSwitch_i/S_SYNCER_for__OUT_/lahsy4kevbbz5f1pl25cndeyi9crlj_812/gnuram_async_fifo.xpm_fifo_base_inst/gen_sdpram.xpm_memory_base_inst/Initial270_1120 File: /home/nico/master-thesis/netpfga/minip4/nf_sume_sdnet_ip/SimpleSumeSwitch/S_BRIDGERs.HDL/xpm_memory.sv [SW] CAM_Init() - start [SW] CAM_Init() - done [SW] CAM_EnableDevice() - start SV_write_control()- start SV_write_control()- done SV_read_control()- start SV_read_control()- done SV_write_control()- start SV_write_control()- done [SW] CAM_EnableDevice() - done [2260762] INFO: finished packet stimulus file [2735572] ERROR: tuple mismatch for packet 1 expected < tuple_out_digest_data, tuple_out_sume_metadata > = < 0000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000001010000 > actual < tuple_out_digest_data, tuple_out_sume_metadata > = < 0000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000010000 > $finish called at time : 2735572 ps : File "/home/nico/master-thesis/netpfga/minip4/nf_sume_sdnet_ip/SimpleSumeSwitch/Testbench/Check.v" Line 120 exit INFO: [Common 17-206] Exiting xsim at Sun May 26 11:09:04 2019… [11:09] rainbow:SimpleSumeSwitch%

After setting egress port, vivado_sim.bash looks good

SV_write_control()- start SV_write_control()- done SV_read_control()- start SV_read_control()- done SV_write_control()- start SV_write_control()- done [SW] CAM_EnableDevice() - done [2260762] INFO: finished packet stimulus file [2735572] INFO: packet 1 tuple OK < tuple_out_digest_data, tuple_out_sume_metadata > = < 0000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000001010000 > [2735572] INFO: packet 1 data OK (tlast, tkeep, tdata) = (0, ffffffff, 0000000000000000000000000000000000000090082222222208081111111108) [2738904] INFO: packet 1 data OK (tlast, tkeep, tdata) = (1, ffffffff, 0000000000000000000000000000000000000000000000000000000000000000) [6074236] INFO: stopping simulation after 1000 idle cycles [6074236] INFO: all expected data successfully received [6074236] INFO: TEST PASSED $finish called at time : 6074236 ps : File "/home/nico/master-thesis/netpfga/minip4/nf_sume_sdnet_ip/SimpleSumeSwitch/Testbench/SimpleSumeSwitch_tb.sv" Line 207 exit INFO: [Common 17-206] Exiting xsim at Sun May 26 11:14:34 2019… [11:14] rainbow:SimpleSumeSwitch%

Started compiling the bitstream at around 1120 Ended at Sun 26 May 2019 01:09:05 PM CEST

run step 11: checking design – skipped

DONE run step 12: ok

code

cd $NF_DESIGN_DIR/bitfiles && \ mv simple_sume_switch.bit ${P4_PROJECT_NAME}.bit && \ cp $P4_PROJECT_DIR/testdata/config_writes.sh ./

DONE run step 13:

command

cd $NF_DESIGN_DIR/bitfiles/ && sudo bash ./program_switch.sh

[13:18] rainbow:bitfiles% sudo bash root@rainbow:~/master-thesis/netpfga/minip4/simple_sume_switch/bitfiles# . ~nico/master-thesis/netpfga/bashinit root@rainbow:~/master-thesis/netpfga/minip4/simple_sume_switch/bitfiles# bash program_switch.sh

DONE try1: paths not setup for root

[14:54] rainbow:bitfiles% cd $NF_DESIGN_DIR/bitfiles/ && sudo bash ./program_switch.sh ./program_switch.sh: line 34: /tools/program_switch.sh: No such file or directory [14:56] rainbow:bitfiles% ls config_writes.sh minip4.bit program_switch.sh README [14:56] rainbow:bitfiles%

DONE try2: setup paths as root: various other errors

root@rainbow:~# cd $NF_DESIGN_DIR/bitfiles/ && bash ./program_switch.sh rmmod: ERROR: Module sume_riffa is not currently loaded rlwrap: warning: your $TERM is 'screen' but rlwrap couldn't find it in the terminfo database. Expect some problems. RUN loading image file. switch_calc.bit attempting to launch hw_server ** Xilinx hw_server v2018.2 ** Build date : Jun 14 2018-20:18:37 ** Copyright 1986-2018 Xilinx, Inc. All Rights Reserved.

INFO: hw_server application started INFO: Use Ctrl-C to exit hw_server application

INFO: To connect to this hw_server instance use url: TCP:127.0.0.1:3121

couldn't open "switch_calc.bit": no such file or directory invoked from within "::tcf::eval -progress ::xsdb::print_progress {::tcf::cache_enter tcfchan#0 {tcf_cache_eval {process_tcf_actions_cache_client ::tcfclient#0::arg}}}" (procedure "::tcf::cache_eval_with_progress" line 2) invoked from within "::tcf::cache_eval_with_progress [dict get $arg chan] [list process_tcf_actions_cache_client $argvar] $progress" (procedure "process_tcf_actions" line 1) invoked from within "process_tcf_actions $arg ::xsdb::print_progress" (procedure "fpga" line 430) invoked from within "fpga -f $bitimage" (file "/root/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/tools/run_xsct.tcl" line 33) Check programming FPGA or Reboot machine ! rmmod: ERROR: Module sume_riffa is not currently loaded nf0: ERROR while getting interface flags: No such device nf1: ERROR while getting interface flags: No such device nf2: ERROR while getting interface flags: No such device nf3: ERROR while getting interface flags: No such device

DONE try3: adjusting/analysing "./program_switch.sh"

Calls another script

${SUME_SDNET}/tools/program_switch.sh switch_calc.bit config_writes.sh

DONE try4: analyse ANOTHER program_switch.sh

root@rainbow:~/projects/P4-NetFPGA# find . -name program_switch.sh ./contrib-projects/sume-sdnet-switch/projects/int/simple_sume_switch/bitfiles/program_switch.sh ./contrib-projects/sume-sdnet-switch/projects/minip4/simple_sume_switch/bitfiles/program_switch.sh ./contrib-projects/sume-sdnet-switch/projects/switch_calc/simple_sume_switch/bitfiles/program_switch.sh ./contrib-projects/sume-sdnet-switch/projects/learning_switch/simple_sume_switch/bitfiles/program_switch.sh ./contrib-projects/sume-sdnet-switch/projects/tcp_monitor/simple_sume_switch/bitfiles/program_switch.sh ./contrib-projects/sume-sdnet-switch/tools/program_switch.sh ./contrib-projects/sume-sdnet-switch/templates/sss_p4_proj/simple_sume_switch/bitfiles/program_switch.sh root@rainbow:~/projects/P4-NetFPGA#

Add set -x debugging, see real error

DONE try 5: reboot && retry

[9:24] rainbow:~% sudo -i root@rainbow:~# lsmod | grep riffa root@rainbow:~# modprobe sume_riffa modprobe: FATAL: Module sume_riffa not found in directory /lib/modules/5.0.0-15-generic root@rainbow:~#

-> not changing

DONE Going back to setup steps

[10:11] rainbow:tcam_v1_1_0% cd $SUME_FOLDER/lib/hw/xilinx/cores/tcam_v1_1_0/ && make update && make cd $SUME_FOLDER/lib/hw/xilinx/cores/cam_v1_1_0/ && make update && make cd $SUME_SDNET/sw/sume && make cd $SUME_FOLDER && make

-> all good so far

cd $DRIVER_FOLDER make all sudo make install sudo modprobe sume_riffa

[11:44] rainbow:sume_riffa_v1_0_0% sudo make install make -C /lib/modules/5.0.0-15-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-5.0.0-15-generic' Building modules, stage 2. MODPOST 1 modules make[1]: Leaving directory 'usr/src/linux-headers-5.0.0-15-generic' install -o root -g root -m 0755 -d /lib/modules/5.0.0-15-generic/extra/sume_riffa install -o root -g root -m 0755 sume_riffa.ko lib/modules/5.0.0-15-generic/extra/sume_riffa depmod -a 5.0.0-15-generic [11:44] rainbow:sume_riffa_v1_0_0%

[11:44] rainbow:sume_riffa_v1_0_0% lsmod | grep sume_riffa sume_riffa 28672 0 [11:45] rainbow:sume_riffa_v1_0_0%

DONE try 6: after successful compile, missing switch_calc.bitcoin

root@rainbow:~/master-thesis/netpfga/minip4/simple_sume_switch/bitfiles# bash program_switch.sh ++ which vivado

xilinx_tool_path=/opt/Xilinx/Vivado/2018.2/bin/vivado
bitimage=switch_calc.bit
configWrites=config_writes.sh
'[' -z switch_calc.bit ']'
'[' -z config_writes.sh ']'
'[' /opt/Xilinx/Vivado/2018.2/bin/vivado == '' ']'
rmmod sume_riffa
xsct /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/tools/run_xsct.tcl -tclargs switch_calc.bit

rlwrap: warning: your $TERM is 'screen' but rlwrap couldn't find it in the terminfo database. Expect some problems. RUN loading image file. switch_calc.bit attempting to launch hw_server

INFO: hw_server application started INFO: Use Ctrl-C to exit hw_server application

INFO: To connect to this hw_server instance use url: TCP:127.0.0.1:3121

bash /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/tools/pci_rescan_run.sh

Check programming FPGA or Reboot machine !

rmmod sume_riffa

rmmod: ERROR: Module sume_riffa is not currently loaded

modprobe sume_riffa
ifconfig nf0 up

nf0: ERROR while getting interface flags: No such device

ifconfig nf1 up

nf1: ERROR while getting interface flags: No such device

ifconfig nf2 up

nf2: ERROR while getting interface flags: No such device

ifconfig nf3 up

nf3: ERROR while getting interface flags: No such device

bash config_writes.sh

root@rainbow:~/master-thesis/netpfga/minip4/simple_sume_switch/bitfiles#

Debugging why the bitfile is missing -> WRONG name! Analysing program_switch.sh

[13:22] rainbow:bitfiles% ls config_writes.sh minip4.bit program_switch.sh README [13:24] rainbow:bitfiles%

switch_calc.bit HARDCODED incorrectly in the script

${SUME_SDNET}/tools/program_switch.sh minip4.bit config_writes.sh

Output of programming

root@rainbow:~/master-thesis/netpfga/minip4/simple_sume_switch/bitfiles# bash program_switch.sh ++ which vivado

xilinx_tool_path=/opt/Xilinx/Vivado/2018.2/bin/vivado
bitimage=minip4.bit
configWrites=config_writes.sh
'[' -z minip4.bit ']'
'[' -z config_writes.sh ']'
'[' /opt/Xilinx/Vivado/2018.2/bin/vivado == '' ']'
rmmod sume_riffa
xsct /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/tools/run_xsct.tcl -tclargs minip4.bit

rlwrap: warning: your $TERM is 'screen' but rlwrap couldn't find it in the terminfo database. Expect some problems. RUN loading image file. minip4.bit attempting to launch hw_server

INFO: hw_server application started INFO: Use Ctrl-C to exit hw_server application

INFO: To connect to this hw_server instance use url: TCP:127.0.0.1:3121

100% 11MB 1.7MB/s 00:06

bash /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/tools/pci_rescan_run.sh

Check programming FPGA or Reboot machine !

rmmod sume_riffa

rmmod: ERROR: Module sume_riffa is not currently loaded

modprobe sume_riffa
ifconfig nf0 up

nf0: ERROR while getting interface flags: No such device

ifconfig nf1 up

nf1: ERROR while getting interface flags: No such device

ifconfig nf2 up

nf2: ERROR while getting interface flags: No such device

ifconfig nf3 up

nf3: ERROR while getting interface flags: No such device

bash config_writes.sh

root@rainbow:~/master-thesis/netpfga/minip4/simple_sume_switch/bitfiles#

After reboot:

[13:27] rainbow:~% lspci 00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15d0 00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Device 15d1 00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe Dummy Host Bridge 00:01.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 15d3 00:01.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 15d3 00:01.6 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 15d3 00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe Dummy Host Bridge 00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 15db 00:08.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 15dc 00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 61) 00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51) 00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15e8 00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15e9 00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15ea 00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15eb 00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15ec 00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15ed 00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15ee 00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 15ef 10:00.0 Memory controller: Xilinx Corporation Device 7028 15:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset USB 3.1 xHCI Controller (rev 02) 15:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset SATA Controller (rev 02) 15:00.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43b2 (rev 02) 1d:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02) 1d:01.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02) 1d:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02) 1d:05.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02) 1d:06.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02) 1d:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02) 24:00.0 Network controller: Intel Corporation Dual Band Wireless-AC 3168NGW [Stone Peak] (rev 10) 25:00.0 Ethernet controller: Intel Corporation I211 Gigabit Network Connection (rev 03) 38:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] (rev c8) 38:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device 15de 38:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Device 15df 38:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Device 15e0 38:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Device 15e1 38:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Device 15e3 39:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 61) [13:27] rainbow:~%

root@rainbow:~/master-thesis/netpfga/minip4/simple_sume_switch/bitfiles# lsmod | grep sume_riffa sume_riffa 28672 0 root@rainbow:~/master-thesis/netpfga/minip4/simple_sume_switch/bitfiles# [ 187.401378] sume_riffa: loading out-of-tree module taints kernel. [ 187.401449] sume_riffa: module verification failed: signature and/or required key missing - tainting kernel [ 187.402281] NetFPGA SUME (RIFFA DMA) version $Revision: 1.34 $ [ 187.402341] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: enabling device (0000 -> 0002) [ 187.402563] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] # of channels: 2 [ 187.402565] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] bus interface width: 128 [ 187.402567] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] bus master enabled: 1 [ 187.402568] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] negotiated link width: 8 [ 187.402569] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] negotiated rate width: 2500 MTs [ 187.402571] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] max downstream payload: 512 B [ 187.402572] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] max upstream payload: 128 B [ 187.402599] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 (unnamed net_device) (uninitialized): Port 0 Ethernet address 02:53:55:4d:45:00 [ 187.402604] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 (unnamed net_device) (uninitialized): Port 1 Ethernet address 02:53:55:4d:45:01 [ 187.402609] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 (unnamed net_device) (uninitialized): Port 2 Ethernet address 02:53:55:4d:45:02 [ 187.402613] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 (unnamed net_device) (uninitialized): Port 3 Ethernet address 02:53:55:4d:45:03 [ 187.427036] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 enp16s0: renamed from nf0 [ 187.441436] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 rename7: renamed from nf3 [ 187.465095] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 nf1: up [ 187.465218] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 rename6: renamed from nf2 [ 187.493947] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 enp16s0: up [ 187.504797] amd_iommu_report_page_fault: 28 callbacks suppressed [ 187.504801] AMD-Vi: Event logged [IO_PAGE_FAULT device=10:00.7 domain=0x0000 address=0xffff4000 flags=0x0050] [ 188.421105] IPv6: ADDRCONF(NETDEV_CHANGE): nf1: link becomes ready root@rainbow:~/master-thesis/netpfga/minip4/simple_sume_switch/bitfiles#

root@rainbow:~/master-thesis/netpfga/minip4/simple_sume_switch/bitfiles# ip l 1: lo: <LOOPBACK,UP,LOWER_UP> 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: enp37s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000 link/ether 70:85:c2:ad:62:79 brd ff:ff:ff:ff:ff:ff 3: wlp36s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DORMANT group default qlen 1000 link/ether dc:8b:28:47:5c:f7 brd ff:ff:ff:ff:ff:ff 4: enp16s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000 link/ether 02:53:55:4d:45:00 brd ff:ff:ff:ff:ff:ff 5: nf1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000 link/ether 02:53:55:4d:45:01 brd ff:ff:ff:ff:ff:ff 6: rename6: <BROADCAST,MULTICAST> 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 7: rename7: <BROADCAST,MULTICAST> 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 root@rainbow:~/master-thesis/netpfga/minip4/simple_sume_switch/bitfiles#

DONE Step 14: test the card / switch

try1: adding ips, using tcpdump

testing enp16s0

root@rainbow:~# tcpdump -ni enp16s0 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on enp16s0, link-type EN10MB (Ethernet), capture size 262144 bytes 13:33:53.952947 IP6 fe80::53:55ff:fe4d:4500 > ff02::2: ICMP6, router solicitation, length 16 13:33:55.404587 LLDP, length 216: rainbow.place6.ungleich.ch 13:34:02.242610 IP6 2001:db8::1 > ff02::1:ff00:2: ICMP6, neighbor solicitation, who has 2001:db8::2, length 32 13:34:03.263792 IP6 2001:db8::1 > ff02::1:ff00:2: ICMP6, neighbor solicitation, who has 2001:db8::2, length 32 13:34:04.287910 IP6 2001:db8::1 > ff02::1:ff00:2: ICMP6, neighbor solicitation, who has 2001:db8::2, length 32 13:34:07.429549 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 02:53:55:4d:45:00, length 288 13:34:25.415196 LLDP, length 216: rainbow.place6.ungleich.ch 13:34:55.418304 LLDP, length 216: rainbow.place6.ungleich.ch 13:35:12.381120 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 02:53:55:4d:45:00, length 288 13:35:25.420868 LLDP, length 216: rainbow.place6.ungleich.ch 13:35:55.423875 LLDP, length 216: rainbow.place6.ungleich.ch 13:36:17.384654 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 02:53:55:4d:45:00, length 288 13:36:25.427542 LLDP, length 216: rainbow.place6.ungleich.ch 13:36:55.431733 LLDP, length 216: rainbow.place6.ungleich.ch 13:37:20.483400 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 02:53:55:4d:45:00, length 288 13:37:25.435735 LLDP, length 216: rainbow.place6.ungleich.ch 13:37:54.556948 IP6 fe80::53:55ff:fe4d:4500 > ff02::2: ICMP6, router solicitation, length 16 13:37:55.438238 LLDP, length 216: rainbow.place6.ungleich.ch 13:38:25.384418 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 02:53:55:4d:45:00, length 288 13:38:25.442805 LLDP, length 216: rainbow.place6.ungleich.ch

Testing nf1

root@rainbow:/etc/network# ip addr add 2001:db8:1::1/64 dev nf1 root@rainbow:/etc/network#

root@rainbow:~# tcpdump -ni nf1 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on nf1, link-type EN10MB (Ethernet), capture size 262144 bytes 13:39:11.947770 IP6 fe80::53:55ff:fe4d:4501 > ff02::16: HBH ICMP6, multicast listener report v2, 3 group record(s), length 68 13:39:12.011981 IP6 :: > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:db8:1::1, length 32 13:39:12.799761 IP6 fe80::53:55ff:fe4d:4501 > ff02::16: HBH ICMP6, multicast listener report v2, 3 group record(s), length 68 13:39:14.064981 IP6 2001:db8:1::1.5353 > ff02::fb.5353: 0*- [0q] 2/0/0 (Cache flush) PTR rainbow.local., (Cache flush) AAAA 2001:db8:1::1 (139) 13:39:16.251534 IP6 2001:db8:1::1.5353 > ff02::fb.5353: 0*- [0q] 2/0/0 (Cache flush) PTR rainbow.local., (Cache flush) AAAA 2001:db8:1::1 (139) 13:39:25.449875 LLDP, length 212: rainbow.place6.ungleich.ch

Rebooting again

root@rainbow:~# modprobe sume_riffa root@rainbow:~# dmesg | tail -n 20 [ 88.460898] NetFPGA SUME (RIFFA DMA) version $Revision: 1.34 $ [ 88.461136] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] # of channels: 2 [ 88.461138] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] bus interface width: 128 [ 88.461140] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] bus master enabled: 1 [ 88.461141] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] negotiated link width: 8 [ 88.461143] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] negotiated rate width: 2500 MTs [ 88.461144] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] max downstream payload: 512 B [ 88.461145] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] max upstream payload: 128 B [ 88.461168] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 (unnamed net_device) (uninitialized): Port 0 Ethernet address 02:53:55:4d:45:00 [ 88.461173] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 (unnamed net_device) (uninitialized): Port 1 Ethernet address 02:53:55:4d:45:01 [ 88.461177] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 (unnamed net_device) (uninitialized): Port 2 Ethernet address 02:53:55:4d:45:02 [ 88.461182] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 (unnamed net_device) (uninitialized): Port 3 Ethernet address 02:53:55:4d:45:03 [ 88.481731] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 enp16s0: renamed from nf3 [ 88.502173] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 rename6: renamed from nf2 [ 88.526514] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 rename4: renamed from nf0 [ 88.542069] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 enp16s0: up [ 88.543090] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 rename5: renamed from nf1 [ 89.497027] IPv6: ADDRCONF(NETDEV_CHANGE): enp16s0: link becomes ready [ 89.497964] amd_iommu_report_page_fault: 28 callbacks suppressed [ 89.497967] AMD-Vi: Event logged [IO_PAGE_FAULT device=10:00.7 domain=0x0000 address=0xffff4000 flags=0x0050] root@rainbow:~#

2019-05-26, netfpga integration

[10:56] rainbow:projects% mv minip4 ~/master-thesis/netpfga/ [10:56] rainbow:projects% ln -s ~/master-thesis/netpfga/minip4 [10:56] rainbow:projects%

root@rainbow:~# ip l s enp16s0 up root@rainbow:~# tcpdump -ni enp16s0 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on enp16s0, link-type EN10MB (Ethernet), capture size 262144 bytes

[ 88.460460] sume_riffa: loading out-of-tree module taints kernel. [ 88.460534] sume_riffa: module verification failed: signature and/or required key missing - tainting kernel [ 88.460898] NetFPGA SUME (RIFFA DMA) version $Revision: 1.34 $ [ 88.461136] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] # of channels: 2 [ 88.461138] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] bus interface width: 128 [ 88.461140] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] bus master enabled: 1 [ 88.461141] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] negotiated link width: 8 [ 88.461143] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] negotiated rate width: 2500 MTs [ 88.461144] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] max downstream payload: 512 B [ 88.461145] NetFPGA SUME (RIFFA DMA) 0000:10:00.0: [riffa] max upstream payload: 128 B [ 88.461168] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 (unnamed net_device) (uninitialized): Port 0 Ethernet address 02:53:55:4d:45:00 [ 88.461173] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 (unnamed net_device) (uninitialized): Port 1 Ethernet address 02:53:55:4d:45:01 [ 88.461177] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 (unnamed net_device) (uninitialized): Port 2 Ethernet address 02:53:55:4d:45:02 [ 88.461182] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 (unnamed net_device) (uninitialized): Port 3 Ethernet address 02:53:55:4d:45:03 [ 88.481731] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 enp16s0: renamed from nf3 [ 88.502173] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 rename6: renamed from nf2 [ 88.526514] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 rename4: renamed from nf0 [ 88.542069] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 enp16s0: up [ 88.543090] NetFPGA SUME (RIFFA DMA) 0000:10:00.0 rename5: renamed from nf1 [ 89.497027] IPv6: ADDRCONF(NETDEV_CHANGE): enp16s0: link becomes ready [ 89.497964] amd_iommu_report_page_fault: 28 callbacks suppressed [ 89.497967] AMD-Vi: Event logged [IO_PAGE_FAULT device=10:00.7 domain=0x0000 address=0xffff4000 flags=0x0050] [ 124.875633] device enp16s0 entered promiscuous mode root@rainbow:~#

root@rainbow:~# ip addr add 2001:db8::1/64 dev enp16s0

13:45:04.211832 IP6 :: > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:db8::1, length 32 13:45:05.555657 IP6 2001:db8::1.5353 > ff02::fb.5353: 0*- [0q] 2/0/0 (Cache flush) PTR rainbow.local., (Cache flush) AAAA 2001:db8::1 (139) 13:45:07.718554 IP6 2001:db8::1.5353 > ff02::fb.5353: 0*- [0q] 2/0/0 (Cache flush) PTR rainbow.local., (Cache flush) AAAA 2001:db8::1 (139) 13:45:23.556081 LLDP, length 216: rainbow.place6.ungleich.ch

-> no replies

Testing with the supplied tool

root@rainbow:~/master-thesis/netpfga/minip4/sw/hw_test_tool# python switch_calc_tester.py SIOCSIFADDR: No such device eth1: ERROR while getting interface flags: No such device SIOCSIFNETMASK: No such device tcpdump: eth1: No such device exists (SIOCGIFHWADDR: No such device) The HW testing tool for the switch_calc design type help to see all commands testing>

Broken again. Debug manually.

[13:49] rainbow:~% python Python 2.7.16 (default, Apr 6 2019, 01:42:57) [GCC 8.3.0] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> from scapy.all import * >>> MAC1 = "08:11:11:11:11:08" >>> MAC2 = "08:22:22:22:22:08" >>> pkt = Ether(dst=MAC2, src=MAC1) >>> srp1(pkt, iface="enp16s0") Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib/python2.7/dist-packages/scapy/sendrecv.py", line 434, in srp1 ans, _ = srp(*args, **kargs) File "/usr/lib/python2.7/dist-packages/scapy/sendrecv.py", line 416, in srp s = conf.L2socket(promisc=promisc, iface=iface, filter=filter, nofilter=nofilter, type=type) File "/usr/lib/python2.7/dist-packages/scapy/arch/linux.py", line 502, in init self.ins = socket.socket(socket.AF_PACKET, socket.SOCK_RAW, socket.htons(type)) File "/usr/lib/python2.7/socket.py", line 191, in init _sock = _realsocket(family, type, proto) socket.error: [Errno 1] Operation not permitted >>>

Try padding to 64 bytes

>>> len(pkt) 14 >>> 64-14 50 >>> RAW(50*"A") Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'RAW' is not defined >>> Raw(50*"A") <Raw load='AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' |> >>> pkg2 = pkt / Raw(50*"A") >>> >>> pkg2 = pkt / Raw(50*"A") >>> srp1(pkg2, iface="enp16s0") Begin emission: Finished sending 1 packets.

tcpdump:

DONE Understand a bit of xilinx/netfpga/vivado ~ somewhat

https://www.xilinx.com/support/documentation/sw_manuals/xilinx2014_4/ug900-vivado-logic-simulation.pdf

The xvhdl and xvlog commands parse VHDL and Verilog files, respectively. Descriptions for each option are available in Table 5-2, page 102.

This command parses the VHDL source file(s) and stores the parsed dump into a HDL library on disk.

xelab

xelab The xelab command, for given top-level units, does the following: • Loads children design units using language binding rules or the –L <library> command line specified HDL libraries • Performs a static elaboration of the design (sets parameters, generics, puts generate statements into effect, and so forth) • Generates executable code • Links the generated executable code with the simulation kernel library to create an executable simulation snapshot You then use the produced executable simulation snapshot name as an option to the xsim command along with other options to effect HDL simulation

Summary of xilinx toolchain

VHDL->[via xvhdl]-> HDL Verilog->[via xvlog]->HDL

Understand SimpleSumeSwitch

SimpleSumeSwitch( TopParser(), TopPipe(), TopDeparser() ) main;

Understand the different switch models (?)

TODO Find out whether delta based checksumming is feasible [in P4]

DONE Analysing scapy

CLOSED: [2019-06-23 Sun 14:18]

[13:51] line:~% dpkg -L python3-scapy | grep inet /usr/lib/python3/dist-packages/scapy/layers/inet.py /usr/lib/python3/dist-packages/scapy/layers/inet6.py

if self.chksum is None: ck = checksum(p) p = p[:10]+chb(ck>>8)+chb(ck&0xff)+p[12:] return p+pay

[13:55] line:~% grep checksum -r usr/lib/python3/dist-packages/scapy | grep def /usr/lib/python3/dist-packages/scapy/contrib/isis.py: def checksum_info(self, hdrlen): /usr/lib/python3/dist-packages/scapy/contrib/isis.py: def checksum_info(self, hdrlen): /usr/lib/python3/dist-packages/scapy/contrib/ospf.py:def ospf_lsa_checksum(lsa): /usr/lib/python3/dist-packages/scapy/utils.py: def checksum(pkt): /usr/lib/python3/dist-packages/scapy/utils.py: def checksum(pkt): /usr/lib/python3/dist-packages/scapy/utils.py:def fletcher16_checksum(binbuf): /usr/lib/python3/dist-packages/scapy/layers/sctp.py:def sctp_checksum(buf): [13:55] line:~%

if struct.pack("H",1) == b"\x00\x01": # big endian def checksum(pkt): if len(pkt) % 2 = 1: pkt + b"\0" s = sum(array.array("H", pkt)) s = (s >> 16) + (s & 0xffff) s += s >> 16 s = ~s return s & 0xffff else: def checksum(pkt): if len(pkt) % 2 = 1: pkt + b"\0" s = sum(array.array("H", pkt)) s = (s >> 16) + (s & 0xffff) s += s >> 16 s = ~s return (((s>>8)&0xff)|s<<8) & 0xffff

TODO Trying to create a delta diff: AAAA vs. BBAA

[14:17] line:bin% python3 checksum_from_scapy.py AAAA b'AAAA' 32125 [14:18] line:bin% python3 checksum_from_scapy.py BBAA b'BBAA' 31868 [14:18] line:bin% python3 checksum_from_scapy.py AA b'AA' 48830 [14:20] line:bin% python3 checksum_from_scapy.py BB b'BB' 48573 >>> bin(48830) '0b1011111010111110' >>> bin(48573) '0b1011110110111101' >>>

>>> array.array("H", "AAAA".encode("utf-8")) array('H', [16705, 16705]) >>> array.array("H", "AA".encode("utf-8")) array('H', [16705])

-> bit concat on 16: AA: >>> 0b100000101000001 16705

Order in 16 bit tuples does not matter:

[14:24] line:bin% python3 checksum_from_scapy.py AABB b'AABB' sum=33667 31868 [14:28] line:bin% python3 checksum_from_scapy.py BBAA b'BBAA' sum=33667 31868

[14:28] line:bin% python3 checksum_from_scapy.py BBCCAA b'BBCCAA' sum=50886 14649 [14:28] line:bin% python3 checksum_from_scapy.py BBAACC b'BBAACC' sum=50886 14649

Sum on shorts does not stay in short area:

>>> sum(array.array("H", [48830, 48573])) 97403 >>> sum(array.array("H", "AAAA".encode("utf-8"))) 33410 >>> sum(array.array("H", "AABB".encode("utf-8"))) 33667 >>> sum(array.array("H", "AABBCC".encode("utf-8"))) 50886 >>> sum(array.array("H", "AABBCCDD".encode("utf-8"))) 68362

Adding with overflow control works:

>>> s = 97403 >>> s = (s >> 16) + (s & 0xffff) >>> s 31868 >>> s += s >> 16 >>> s 31868

[14:29] line:bin% python3 checksum_from_scapy.py AABB b'AABB' sum=33667 31868

TODO Get ANY p4 program to successfully run on netpfga

TODO mirroring ethernet

no packets seen on source interface

TODO sending data to switch port 1

DONE figuring out which is port 1: nf0

expected actual

applyPkt(pkt, 'nf0', pktCnt) expPkt(pkt, 'nf2')

applyPkt(pkt, 'nf0', pktCnt) expPkt(pkt, 'nf3')

< 0000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000040010000 > < 0000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000001010000 >

DONE Testing packets: does not arrive on nf0 with ping6

4: nf0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether 02:53:55:4d:45:00 brd ff:ff:ff:ff:ff:ff inet6 fe80::53:55ff:fe4d:4500/64 scope link valid_lft forever preferred_lft forever 5: nf1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether 02:53:55:4d:45:01 brd ff:ff:ff:ff:ff:ff inet6 2001:db8::1/64 scope global valid_lft forever preferred_lft forever inet6 fe80::53:55ff:fe4d:4501/64 scope link valid_lft forever preferred_lft forever 6: nf2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 02:53:55:4d:45:02 brd ff:ff:ff:ff:ff:ff 7: nf3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 02:53:55:4d:45:03 brd ff:ff:ff:ff:ff:ff

root@rainbow:~# tcpdump -ni nf0 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on nf0, link-type EN10MB (Ethernet), capture size 262144 bytes

[19:27] rainbow:~% sudo -i root@rainbow:~# tcpdump -ni nf1 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on nf1, link-type EN10MB (Ethernet), capture size 262144 bytes 19:28:36.720431 IP6 2001:db8::1 > ff02::1:ff00:2: ICMP6, neighbor solicitation, who has 2001:db8::2, length 32 19:28:37.725181 IP6 2001:db8::1 > ff02::1:ff00:2: ICMP6, neighbor solicitation, who has 2001:db8::2, length 32 19:28:38.749195 IP6 2001:db8::1 > ff02::1:ff00:2: ICMP6, neighbor solicitation, who has 2001:db8::2, length 32

TODO Testing packets with send_packet.py: nothing arrives

root@rainbow:/home/nico/master-thesis/bin# python send_packet.py nf1 . Sent 1 packets. root@rainbow:/home/nico/master-thesis/bin# python send_packet.py nf0 . Sent 1 packets. root@rainbow:/home/nico/master-thesis/bin#

-> only shows up on the interface that we send, not on nf0 if sending on nf1

TODO Trying to add explicit table entry

>> table_cam_add_entry lookup_table send_to_port1 ff:ff:ff:ff:ff:ff => CAM_Init_ValidateContext() - done WROTE 0x44020050 = 0xffffffff WROTE 0x44020054 = 0xffff WROTE 0x44020080 = 0x0003 python: ioctl: Unknown error 512 [20:27] rainbow:CLI%

TODO Trying to read a table entry

>> table_cam_read_entry lookup_table 0 CAM_Init_ValidateContext() - done WROTE 0x44020050 = 0x0000 WROTE 0x44020054 = 0x0000 python: ioctl: Unknown error 512 [20:31] rainbow:CLI% python P4_SWITCH_CLI.py loading libsume.. loading libsume.. loading libcam.. The SimpleSumeSwitch interactive command line tool type help to see all commands >> table_cam_read_entry lookup_table 1 CAM_Init_ValidateContext() - done WROTE 0x44020050 = 0x0001 WROTE 0x44020054 = 0x0000 python: ioctl: Unknown error 512 [20:31] rainbow:CLI% python P4_SWITCH_CLI.py loading libsume.. loading libsume.. loading libcam.. The SimpleSumeSwitch interactive command line tool type help to see all commands >> table_cam_read_entry lookup_table p.ethernet.dstAddr ERROR: failed to convert p.ethernet.dstAddr of type <type 'str'> to an integer

TODO Create either HDL or PX for supporting payload checksum

https://github.com/NetFPGA/P4-NetFPGA-public/issues/13 https://github.com/NetFPGA/P4-NetFPGA-public/issues/13#issuecomment-490431016

TODO Explore HDL

TODO Explore PX

TODO Integrate nat64 code into netfpga

figure out how to do ANY checksums

NAT64/NAT46 Features in jool and tayga

TODO Static 1:1 NAT46: translate from IPv4 to IPv6 with a table

TODO TCP

TODO UDP

TODO ICMP <-> ICMPv6

TODO Stateless Prefix based NAT64: IPv6 to IPv4 translation prefix based

Allows IPv6 hosts to reach the IPv4 Internet

See time table above

Additional features queue (to be discussed)

TODO Offset based translation (v4->v6) -> same as range (?)

TODO IP address learning (v6/v4) for real life switch? How do hosts find it?

Netpfga cabling

eth2 <–> nf0

eth1 <–> nf3

Thesis documentation

Introduction

Related work

RFC6052

Defining well known prefix 64:ff9b::/96
Defining embedding depending on prefix: /32../104 in 8 bit steps
Longer than /96: suffix support

Motivation

TBD

Translation mechanisms

v4 to v6 / vice versa
Stateful / stateless
static / dynamic

Explicit Address Mappings Table (EAMT)

Range based mapping tables See https://www.jool.mx/en/eamt.html, https://tools.ietf.org/html/rfc7757

Stateful NAT46

Not needed
IP address based translation is enough

Current state of the art tayga/jool

TBD

Tayga

Single threaded
Multi threaded work started due to initiative of ungleich / Chrisrock [IPv6.chat]

Jool

EAMT bidirectional only (!)

IPtables interaction

```

user@T:~# # Create a Jool iptables instance named "example." user@T:~# # Also, establish that the IPv6 representation of any IPv4 address should be user@T:~# # `2001:db8::<IPv4 address>`. (See sections below for examples.) user@T:~# jool_siit instance add "example" –iptables –pool6 2001:db8::/96 user@T:~# user@T:~# # Tell iptables which traffic should be handled by our newly-created instance: user@T:~# user@T:~# # IPv6: only packets from 2001:db8::198.51.100.8/125 to 2001:db8::192.0.2 user@T:~# ip6tables -t mangle -A PREROUTING \ > -s 2001:db8::198.51.100.8/125 -d 2001:db8::192.0.2.0/120 \ > -j JOOL_SIIT –instance "example" user@T:~# # IPv4: Only packets from 192.0.2 to 198.51.100.8/29 user@T:~# iptables -t mangle -A PREROUTING \ > -s 192.0.2.0/24 -d 198.51.100.8/29 \ > -j JOOL_SIIT –instance "example" ``` 5656

Cisco (?)

TODO P4 based implementation

General

IPv6 subnet 2001:db8::/32
IPv6 hosts are in 2001:db8:6::/64
IPv6 default router (::/0) is 2001:db8:6::42/64
IPv4 mapped Internet "NAT64 prefix" 2001:db8:4444::/96 (should go into a table)
IPv4 hosts are in 10.0.4.0/24
IPv6 in IPv4 mapped hosts are in 10.0.6.0/24
IPv4 default router = 10.0.0.42

TODO IPv4 embedding

RFC6052

    +--+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
    |PL| 0-------------32--40--48--56--64--72--80--88--96--104---------|
    +--+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
    |32|     prefix    |v4(32)         | u | suffix                    |
    +--+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
    |40|     prefix        |v4(24)     | u |(8)| suffix                |
    +--+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
    |48|     prefix            |v4(16) | u | (16)  | suffix            |
    +--+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
    |56|     prefix                |(8)| u |  v4(24)   | suffix        |
    +--+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
    |64|     prefix                    | u |   v4(32)      | suffix    |
    +--+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
    |96|     prefix                                    |    v4(32)     |
    +--+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+

Bits 64..71 have to be 0 – ref rfc4291 - host identifier - why? Section 2.5.1 of rfc4291 "required to be unique within a subnet prefix" Modified EUI-64 format. Compare EUI-64: first 8 bits of mac address

inverting u bit from rfc 4291

the "u" bit is set to one (1) to indicate universal scope, and it is set to zero (0) to indicate local scope.

          0       0 0       1 1       2
         |0       7 8       5 6       3|
         +----+----+----+----+----+----+
         |cccc|ccug|cccc|cccc|cccc|cccc|
         +----+----+----+----+----+----+

Neighbor discover protocol

Initial log

Matching on prefix & ingress port, setting multicast

Being forwarded:

p4@ubuntu:~/master-thesis$ mx h1 tcpdump -ni h1-eth0 sudo: unable to resolve host ubuntu tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on h1-eth0, link-type EN10MB (Ethernet), capture size 262144 bytes ^C14:59:22.871803 IP6 2001:db8:62::1 > ff02::1:ff00:2: ICMP6, neighbor solicitation, who has 2001:db8:62::2, length 32 14:59:23.863913 IP6 2001:db8:62::1 > ff02::1:ff00:2: ICMP6, neighbor solicitation, who has 2001:db8:62::2, length 32 14:59:24.864033 IP6 2001:db8:62::1 > ff02::1:ff00:2: ICMP6, neighbor solicitation, who has 2001:db8:62::2, length 32

3 packets captured 3 packets received by filter 0 packets dropped by kernel

But no answer yet!

root@ubuntu:~/master-thesis/p4app# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: h1-eth0@if123: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9500 qdisc netem state UP group default qlen 1000 link/ether 00:00:0a:00:00:01 brd ff:ff:ff:ff:ff:ff link-netnsid 0 inet6 2001:db8:62::2/64 scope global valid_lft forever preferred_lft forever inet6 2001:db8:61::1/64 scope global valid_lft forever preferred_lft forever inet6 fe80::200:aff:fe00:1/64 scope link valid_lft forever preferred_lft forever root@ubuntu:~/master-thesis/p4app#

Link local communication does not work:

root@ubuntu:~/master-thesis/p4app# ping6 -c1 fe80::200:aff:fe00:2%h1-eth0 PING fe80::200:aff:fe00:2%h1-eth0(fe80::200:aff:fe00:2) 56 data bytes From fe80::200:aff:fe00:1 icmp_seq=1 Destination unreachable: Address unreachable

— fe80::200:aff:fe00:2%h1-eth0 ping statistics — 1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms

root@ubuntu:~/master-thesis/p4app#

Packet is received on the other host, but not answered. Why?

Real trace from my network:

18:48:17.008524 IP6 2a0a:e5c1:111:111:eb7:ffdb:e245:f712 > ff02::1:ffb7:e225: ICMP6, neighbor solicitation, who has 2a0a:e5c1:111:111:1016:3c5a:38b7:e225, length 32 18:48:18.015016 IP6 2a0a:e5c1:111:111:eb7:ffdb:e245:f712 > ff02::1:ffb7:e225: ICMP6, neighbor solicitation, who has 2a0a:e5c1:111:111:1016:3c5a:38b7:e225, length 32 18:48:18.031165 IP6 2a0a:e5c1:111:111:1016:3c5a:38b7:e225 > 2a0a:e5c1:111:111:eb7:ffdb:e245:f712: ICMP6, neighbor advertisement, tgt is 2a0a:e5c1:111:111:1016:3c5a:38b7:e225, length 32 18:48:18.031236 IP6 2a0a:e5c1:111:111:eb7:ffdb:e245:f712 > 2a0a:e5c1:111:111:1016:3c5a:38b7:e225: ICMP6, echo request, seq 1, length 64 18:48:18.031267 IP6 2a0a:e5c1:111:111:eb7:ffdb:e245:f712 > 2a0a:e5c1:111:111:1016:3c5a:38b7:e225: ICMP6, echo request, seq 2, length 64 18:48:18.131709 IP6 2a0a:e5c1:111:111:1016:3c5a:38b7:e225 > 2a0a:e5c1:111:111:eb7:ffdb:e245:f712: ICMP6, echo reply, seq 1, length 64 18:48:18.131732 IP6 2a0a:e5c1:111:111:1016:3c5a:38b7:e225 > 2a0a:e5c1:111:111:eb7:ffdb:e245:f712: ICMP6, echo reply, seq 2, length 64

root@ubuntu:~/master-thesis/p4app# cat /proc/sys/net/ipv6/conf/*/disable_ipv6 1 1 0 0 root@ubuntu:~/master-thesis/p4app# root@ubuntu:~/master-thesis/p4app# ls -1 /proc/sys/net/ipv6/conf/*/disable_ipv6 /proc/sys/net/ipv6/conf/all/disable_ipv6 /proc/sys/net/ipv6/conf/default/disable_ipv6 /proc/sys/net/ipv6/conf/h1-eth0/disable_ipv6 /proc/sys/net/ipv6/conf/lo/disable_ipv6 root@ubuntu:~/master-thesis/p4app#

Works on mininet

mininet> h2 bash root@line:~# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: h2-eth0@if93: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether 32:0e:1e:bf:3c:4b brd ff:ff:ff:ff:ff:ff link-netnsid 0 inet 10.0.0.2/8 brd 10.255.255.255 scope global h2-eth0 valid_lft forever preferred_lft forever inet6 fe80::300e:1eff:febf:3c4b/64 scope link valid_lft forever preferred_lft forever root@line:~# ip addr add 2001:db8:61::42/64 dev h2-eth0 root@line:~# ^Dexit mininet> h1 bash root@line:~# ip addr add 2001:db8:61::42/64^[[D^[[D^?^?^?^?^?^?^?^?^?^?^?^C^C root@line:~# ^Dexit mininet> h1 ip addr add 2001:db8:61::2/64 dev h1-eth0 mininet> h2 ping6 -c2 2001:db8:61::2 PING 2001:db8:61::2(2001:db8:61::2) 56 data bytes 64 bytes from 2001:db8:61::2: icmp_seq=1 ttl=64 time=0.230 ms 64 bytes from 2001:db8:61::2: icmp_seq=2 ttl=64 time=0.138 ms

— 2001:db8:61::2 ping statistics — 2 packets transmitted, 2 received, 0% packet loss, time 1018ms rtt min/avg/max/mdev = 0.138/0.184/0.230/0.046 ms mininet>

mininet on VM also works

mininet> h1 ip addr add 2001:db8:61::1/64 dev h1-eth0 mininet> h2 ip addr add 2001:db8:61::2/64 dev h2-eth0 mininet> h2 ping6 -c2 2001:db8:61::2 PING 2001:db8:61::2(2001:db8:61::2) 56 data bytes 64 bytes from 2001:db8:61::2: icmp_seq=1 ttl=64 time=0.053 ms 64 bytes from 2001:db8:61::2: icmp_seq=2 ttl=64 time=0.082 ms

— 2001:db8:61::2 ping statistics — 2 packets transmitted, 2 received, 0% packet loss, time 999ms rtt min/avg/max/mdev = 0.053/0.067/0.082/0.016 ms mininet>

WORKING trace on mininet on the VM

19:38:49.852088 IP6 2001:db8:61::2 > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:db8:61::1, length 32 19:38:49.852144 IP6 2001:db8:61::1 > 2001:db8:61::2: ICMP6, neighbor advertisement, tgt is 2001:db8:61::1, length 32 19:38:49.852163 IP6 2001:db8:61::2 > 2001:db8:61::1: ICMP6, echo request, seq 1, length 64 19:38:49.852176 IP6 2001:db8:61::1 > 2001:db8:61::2: ICMP6, echo reply, seq 1, length 64

checking ipv6 in p4-utils

p4@ubuntu:~/p4-utils$ grep -ri ipv6 . ./p4utils/mininetlib/p4_mininet.py: # disable IPv6 ./p4utils/mininetlib/p4_mininet.py: self.cmd("sysctl -w net.ipv6.conf.all.disable_ipv6=1") ./p4utils/mininetlib/p4_mininet.py: self.cmd("sysctl -w net.ipv6.conf.default.disable_ipv6=1") ./p4utils/mininetlib/p4_mininet.py: self.cmd("sysctl -w net.ipv6.conf.lo.disable_ipv6=1") ./p4utils/mininetlib/p4net.py: #remove Ipv6 for all the interfaces ./p4utils/mininetlib/p4net.py: cmd2 = "sysctl net.ipv6.conf.{0}.disable_ipv6=1" ./p4utils/mininetlib/p4net.py: #remove ipv6 Binary file ./p4utils/mininetlib/p4_mininet.pyc matches Binary file ./p4utils/mininetlib/p4net.pyc matches Binary file ./p4utils/utils/runtime_API.pyc matches ./p4utils/utils/runtime_API.py:class UIn_BadIPv6Error(UIn_Error): ./p4utils/utils/runtime_API.py:def ipv6Addr_to_bytes(addr): ./p4utils/utils/runtime_API.py: from ipaddr import IPv6Address ./p4utils/utils/runtime_API.py: ip = IPv6Address(addr) ./p4utils/utils/runtime_API.py: raise UIn_BadIPv6Error() ./p4utils/utils/runtime_API.py: raise UIn_BadIPv6Error() ./p4utils/utils/runtime_API.py: return ipv6Addr_to_bytes(input_str) ./p4utils/utils/runtime_API.py: except UIn_BadIPv6Error: ./p4utils/utils/runtime_API.py: raise UIn_BadParamError("Invalid IPv6 address") p4@ubuntu:~/p4-utils$

Messages we see in the controller on startup

DEBUG:main:INCOMING: <Ether dst=33:33:00:00:00:16 src=00:00:0a:00:00:02 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=56 nh=Hop-by-Hop Option Header hlim=1 src=:: dst=ff02::16 |<IPv6ExtHdrHopByHop nh=ICMPv6 len=0 autopad=On options=[<RouterAlert otype=Router Alert [00: skip, 0: Don't change en-route] optlen=2 value=Datagram contains a MLD message |>, <PadN otype=PadN [00: skip, 0: Don't change en-route] optlen=0 |>] |<ICMPv6MLReport2 type=MLD Report Version 2 res=0 cksum=0x6d6d reserved=0 records_number=2 records=[<ICMPv6MLDMultAddrRec rtype=4 auxdata_len=0 sources_number=0 dst=ff02::1:ff00:1 sources=[ ] auxdata='' |<ICMPv6MLDMultAddrRec rtype=4 auxdata_len=0 sources_number=0 dst=ff02::1:ff00:2 |>>] |>>>> DEBUG:main:INCOMING: <Ether dst=33:33:00:00:00:16 src=00:01:0a:00:00:02 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=36 nh=Hop-by-Hop Option Header hlim=1 src=fe80::201:aff:fe00:2 dst=ff02::16 |<IPv6ExtHdrHopByHop nh=ICMPv6 len=0 autopad=On options=[<RouterAlert otype=Router Alert [00: skip, 0: Don't change en-route] optlen=2 value=Datagram contains a MLD message |>, <PadN otype=PadN [00: skip, 0: Don't change en-route] optlen=0 |>] |<ICMPv6MLReport2 type=MLD Report Version 2 res=0 cksum=0x6604 reserved=0 records_number=1 records=[<ICMPv6MLDMultAddrRec rtype=4 auxdata_len=0 sources_number=0 dst=ff02::1:ff00:2 |>] |>>>> DEBUG:main:INCOMING: <Ether dst=33:33:00:00:00:16 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=36 nh=Hop-by-Hop Option Header hlim=1 src=fe80::200:aff:fe00:1 dst=ff02::16 |<IPv6ExtHdrHopByHop nh=ICMPv6 len=0 autopad=On options=[<RouterAlert otype=Router Alert [00: skip, 0: Don't change en-route] optlen=2 value=Datagram contains a MLD message |>, <PadN otype=PadN [00: skip, 0: Don't change en-route] optlen=0 |>] |<ICMPv6MLReport2 type=MLD Report Version 2 res=0 cksum=0x6607 reserved=0 records_number=1 records=[<ICMPv6MLDMultAddrRec rtype=4 auxdata_len=0 sources_number=0 dst=ff02::1:ff00:1 |>] |>>>> DEBUG:main:INCOMING: <Ether dst=33:33:00:00:00:02 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=16 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=ff02::2 |<ICMPv6ND_RS type=Router Solicitation code=0 cksum=0xf72e res=0 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:INCOMING: <Ether dst=33:33:00:00:00:16 src=00:00:0a:00:00:02 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=56 nh=Hop-by-Hop Option Header hlim=1 src=:: dst=ff02::16 |<IPv6ExtHdrHopByHop nh=ICMPv6 len=0 autopad=On options=[<RouterAlert otype=Router Alert [00: skip, 0: Don't change en-route] optlen=2 value=Datagram contains a MLD message |>, <PadN otype=PadN [00: skip, 0: Don't change en-route] optlen=0 |>] |<ICMPv6MLReport2 type=MLD Report Version 2 res=0 cksum=0x6d6d reserved=0 records_number=2 records=[<ICMPv6MLDMultAddrRec rtype=4 auxdata_len=0 sources_number=0 dst=ff02::1:ff00:1 sources=[ ] auxdata='' |<ICMPv6MLDMultAddrRec rtype=4 auxdata_len=0 sources_number=0 dst=ff02::1:ff00:2 |>>] |>>>> DEBUG:main:INCOMING: <Ether dst=33:33:00:00:00:16 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=36 nh=Hop-by-Hop Option Header hlim=1 src=fe80::200:aff:fe00:1 dst=ff02::16 |<IPv6ExtHdrHopByHop nh=ICMPv6 len=0 autopad=On options=[<RouterAlert otype=Router Alert [00: skip, 0: Don't change en-route] optlen=2 value=Datagram contains a MLD message |>, <PadN otype=PadN [00: skip, 0: Don't change en-route] optlen=0 |>] |<ICMPv6MLReport2 type=MLD Report Version 2 res=0 cksum=0x6607 reserved=0 records_number=1 records=[<ICMPv6MLDMultAddrRec rtype=4 auxdata_len=0 sources_number=0 dst=ff02::1:ff00:1 |>] |>>>> DEBUG:main:INCOMING: <Ether dst=33:33:00:00:00:16 src=00:00:0a:00:00:02 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=56 nh=Hop-by-Hop Option Header hlim=1 src=fe80::200:aff:fe00:2 dst=ff02::16 |<IPv6ExtHdrHopByHop nh=ICMPv6 len=0 autopad=On options=[<RouterAlert otype=Router Alert [00: skip, 0: Don't change en-route] optlen=2 value=Datagram contains a MLD message |>, <PadN otype=PadN [00: skip, 0: Don't change en-route] optlen=0 |>] |<ICMPv6MLReport2 type=MLD Report Version 2 res=0 cksum=0x63ea reserved=0 records_number=2 records=[<ICMPv6MLDMultAddrRec rtype=4 auxdata_len=0 sources_number=0 dst=ff02::1:ff00:1 sources=[ ] auxdata='' |<ICMPv6MLDMultAddrRec rtype=4 auxdata_len=0 sources_number=0 dst=ff02::1:ff00:2 |>>] |>>>> DEBUG:main:INCOMING: <Ether dst=33:33:00:00:00:02 src=00:00:0a:00:00:02 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=16 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:2 dst=ff02::2 |<ICMPv6ND_RS type=Router Solicitation code=0 cksum=0xf72d res=0 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:02 |>>>> DEBUG:main:INCOMING: <Ether dst=33:33:00:00:00:16 src=00:00:0a:00:00:02 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=56 nh=Hop-by-Hop Option Header hlim=1 src=fe80::200:aff:fe00:2 dst=ff02::16 |<IPv6ExtHdrHopByHop nh=ICMPv6 len=0 autopad=On options=[<RouterAlert otype=Router Alert [00: skip, 0: Don't change en-route] optlen=2 value=Datagram contains a MLD message |>, <PadN otype=PadN [00: skip, 0: Don't change en-route] optlen=0 |>] |<ICMPv6MLReport2 type=MLD Report Version 2 res=0 cksum=0x63ea reserved=0 records_number=2 records=[<ICMPv6MLDMultAddrRec rtype=4 auxdata_len=0 sources_number=0 dst=ff02::1:ff00:1 sources=[ ] auxdata='' |<ICMPv6MLDMultAddrRec rtype=4 auxdata_len=0 sources_number=0 dst=ff02::1:ff00:2 |>>] |>>>> DEBUG:main:INCOMING: <Ether dst=33:33:00:00:00:02 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=16 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=ff02::2 |<ICMPv6ND_RS type=Router Solicitation code=0 cksum=0xf72e res=0 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:INCOMING: <Ether dst=33:33:00:00:00:02 src=00:00:0a:00:00:02 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=16 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:2 dst=ff02::2 |<ICMPv6ND_RS type=Router Solicitation code=0 cksum=0xf72d res=0 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:02 |>>>> DEBUG:main:INCOMING: <Ether dst=33:33:00:00:00:02 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=16 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=ff02::2 |<ICMPv6ND_RS type=Router Solicitation code=0 cksum=0xf72e res=0 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:INCOMING: <Ether dst=33:33:00:00:00:02 src=00:00:0a:00:00:02 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=16 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:2 dst=ff02::2 |<ICMPv6ND_RS type=Router Solicitation code=0 cksum=0xf72d res=0 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:02 |>>>>

Ignored ICMPv6 packets

We are not using router advertisements, so we ignore RS packets DEBUG:main:INCOMING: <Ether dst=33:33:00:00:00:02 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=16 nh=ICMPv6 hlim=255 src=fe80::200:aff:fe00:1 dst=ff02::2 |<ICMPv6ND_RS type=Router Solicitation code=0 cksum=0xf72e res=0 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>>

Double table entries due to collision

NDP: last 24 bit
Switch has same ending address in different networks -> equal last 24 bit
results in trying to add multicast address multiple times

Adding entry to exact match table v6_addresses match key: EXACT-ff:02:00:00:00:00:00:00:00:00:00:01:ff:00:00:42 action: controller_reply runtime data: 00:01 Invalid table operation (DUPLICATE_ENTRY) Adding entry to exact match table v6_addresses match key: EXACT-ff:02:00:00:00:00:00:00:00:00:00:01:ff:00:00:43 action: controller_reply runtime data: 00:01 Invalid table operation (DUPLICATE_ENTRY) Adding entry to exact match table v6_addresses match key: EXACT-20:01:0d:b8:00:00:00:01:00:00:00:00:00:00:00:43 action: icmp6_echo_reply runtime data: Entry has been added with handle 5

General approach

Need to react on our multicast group
But also need to forward to other ports that subscribed to that multicast group!

Static mappings

likely need table(s)
need tcp & udp translation

ICMPv6

General / Intro

Different lengths possible

[20:35] line:~% ping -6 -s 20 ::1 PING ::1(::1) 20 data bytes 28 bytes from ::1: icmp_seq=1 ttl=64 time=0.045 ms 28 bytes from ::1: icmp_seq=2 ttl=64 time=0.064 ms ^C — ::1 ping statistics — 2 packets transmitted, 2 received, 0% packet loss, time 1018ms rtt min/avg/max/mdev = 0.045/0.054/0.064/0.012 ms [20:36] line:~% ping -6 -s 80 ::1 PING ::1(::1) 80 data bytes 88 bytes from ::1: icmp_seq=1 ttl=64 time=0.053 ms 88 bytes from ::1: icmp_seq=2 ttl=64 time=0.095 ms ^C — ::1 ping statistics — 2 packets transmitted, 2 received, 0% packet loss, time 1001ms rtt min/avg/max/mdev = 0.053/0.074/0.095/0.021 ms [20:36] line:~%

Different checksum in most packets.

root@ubuntu:~/master-thesis# ip -6 neigh show root@ubuntu:~/master-thesis# ip -6 neigh add 2001:db8:61::42 dev h1-eth0 lladdr 00:00:0a:00:00:42 root@ubuntu:~/master-thesis# ip -6 neigh show 2001:db8:61::42 dev h1-eth0 lladdr 00:00:0a:00:00:42 PERMANENT root@ubuntu:~/master-thesis#

root@ubuntu:~/master-thesis# tcpdump -ni h1-eth0 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on h1-eth0, link-type EN10MB (Ethernet), capture size 262144 bytes ^C20:22:43.944152 IP6 2001:db8:61::1 > 2001:db8:61::42: ICMP6, echo request, seq 1, length 64 20:22:43.945992 IP6 2001:db8:61::1 > 2001:db8:61::42: ICMP6, echo request, seq 1, length 64 20:22:44.952453 IP6 2001:db8:61::1 > 2001:db8:61::42: ICMP6, echo request, seq 2, length 64 20:22:44.953995 IP6 2001:db8:61::1 > 2001:db8:61::42: ICMP6, echo request, seq 2, length 64

4 packets captured 4 packets received by filter 0 packets dropped by kernel root@ubuntu:~/master-thesis#

When pinging we see

DEBUG:main:INCOMING: <Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8:61::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0xd343 res=0 tgt=2001:db8:61::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:INCOMING: <Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8:61::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0xd343 res=0 tgt=2001:db8:61::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> DEBUG:main:INCOMING: <Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8:61::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0xd343 res=0 tgt=2001:db8:61::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>>

Hosts

Left side: IPv6

Right side: IPv4

Included in the header

DONE Supported feature: NDP NA/NS

For resolving mac address
Initially controller
Ported into switch

DONE Supported feature: icmp6 echo reply

p4@ubuntu:~/master-thesis/p4app$ python test.py –method ping6_switch PING 2001:db8::42(2001:db8::42) 56 data bytes 64 bytes from 2001:db8::42: icmp_seq=1 ttl=64 time=3.05 ms

— 2001:db8::42 ping statistics — 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 3.055/3.055/3.055/0.000 ms p4@ubuntu:~/master-thesis/p4app$

Requirements

Static NAT64

Asymmetric maps: v6->v4 can match whole IPv4 Internet (/96) But v4->v6 can only map sub range! Using /24s (for convience) in IPv4

Development mode/loop

Code - commit - push - pull - restart switch - check whether all tables are present (missing .apply()) restart controller - check whether tables are applied correctly (type conversion problems) - start tcpdump - start test program - stop tcpdump - add pcap to git repo - git add-commit-push - git pull - start wireshark - debug packets - analyse code - goto 1

Setting up a system for working on P4 on devuan

Scripts in the wild

https://github.com/nsg-ethz/p4-learning/blob/master/vm/bin/update-p4c.sh https://github.com/jafingerhut/p4-guide/blob/master/bin/install-p4dev-p4runtime.sh https://github.com/nsg-ethz/p4-learning/tree/master/vm/bin

mininet

bmv2

[21:24] line:~% sudo apt install libthrift-dev [21:26] line:~% sudo apt install thrift-compiler libnanomsg-dev libjudy-dev

TODO Session / dynamice mappings

General

Have 1..n session IPv4 addresses
Handle outgoing IPv6: create new session
Handle in

TODO Case IPv6 initiator

Mapping whole IPv4 Internet in /96 prefix
Session information for mapping reply
Timeout handling in controller

TODO IPv6 udp -> IPv4

Got 4-5 tuple ([proto], src ip, src port, dst ip, dst port)
Does not / never signal end
Needs timeout for cleaning up

TODO IPv6 tcp -> IPv4

Similar to udp
react on FIN/RST (?) – could be an addition

TODO IPv6 icmp6 -> IPv4

usual protocol specific changes
Session??
src ip, dst ip, code ?

TODO Case IPv4 initiator

Needs upper level protol

TODO General network matching

DONE Create table(s)

DONE Fill it up from the controller: general network

TODO Create controller session handler

Controller Logic

controller selects "outgoing" IPv4 address range => base for sessions
IPv4 addresses can be "random" (in our test case), but need to be unique
switch does not need to know about the "range", only about sessions
on session create, controller selects "random" ip (ring?)
on session create, controller selects "random port" (next in range?)
on session create controller adds choice into 2 tables: incoming, outgoing

DONE Feed back to controller: implemented in switch

DONE Create ipv6 session in the controller

Create ipv4 session in the controller

TODO Ensure translation code works

>>> ipaddress.IPv6Network("2001:db8:100::/96")[int(ipaddress.IPv4Address("10.0.0.1"))] IPv6Address('2001:db8:100::a00:1')

DONE Status: syn sent, neighbor solicitation working, nothing received on other side

INFO:main:unhandled reassambled=<Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=0 plen=32 nh=ICMPv6 hlim=255 src=2001:db8::1 dst=ff02::1:ff00:42 |<ICMPv6ND_NS type=Neighbor Solicitation code=0 cksum=0x13a7 res=0 tgt=2001:db8::42 |<ICMPv6NDOptSrcLLAddr type=1 len=1 lladdr=00:00:0a:00:00:01 |>>>> from table TABLE_NAT64_SESSION INFO:main:unhandled reassambled=<Ether dst=00:00:0a:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=667225 plen=40 nh=TCP hlim=64 src=2001:db8::1 dst=2001:db8:100::a00:1 |<TCP sport=36458 dport=2342 seq=1287954527 ack=0 dataofs=10 reserved=0 flags=S window=28320 chksum=0xdfd6 urgptr=0 options=[('MSS', 9440), ('SAckOK', ''), ('Timestamp', (795131854, 0)), ('NOP', None), ('WScale', 9)] |>>> from table TABLE_V6_NETWORKS INFO:main:unhandled reassambled=<Ether dst=00:00:0a:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=667225 plen=40 nh=TCP hlim=64 src=2001:db8::1 dst=2001:db8:100::a00:1 |<TCP sport=36458 dport=2342 seq=1287954527 ack=0 dataofs=10 reserved=0 flags=S window=28320 chksum=0xdedc urgptr=0 options=[('MSS', 9440), ('SAckOK', ''), ('Timestamp', (795132104, 0)), ('NOP', None), ('WScale', 9)] |>>> from table TABLE_V6_NETWORKS INFO:main:unhandled reassambled=<Ether dst=00:00:0a:00:00:42 src=00:00:0a:00:00:01 type=0x86dd |<IPv6 version=6 tc=0 fl=765494 plen=40 nh=TCP hlim=64 src=2001:db8::1 dst=2001:db8:100::a00:1 |<TCP sport=36458 dport=2342 seq=1287954527 ack=0 dataofs=10 reserved=0 flags=S window=28320 chksum=0xdce7 urgptr=0 options=[('MSS', 9440), ('SAckOK', ''), ('Timestamp', (795132605, 0)), ('NOP', None), ('WScale', 9)] |>>> from table TABLE_V6_NETWORKS

DONE action nat64_tcp_session_create is called

TODO tcp session

TODO udp session

TODO tcp session

TODO Hardware port

Installation issues

Installing vivado would stall/sleep/hang forverer due to missing system library, no error output.

Build process

Very fragile, many pieces, unclear which step is required for creating

what.

Fails at every step
Dependencies in over 80k lines of code (Makefile, python, shell)
Unclear error messages Some step did something and another step fails due do something that was generated by a step that is not clear what it is supposed to do
one step huge output, hundreds to thousands of lines, errors somewher in between => exceeding tmux buffers
some steps take VERY long correctly
some steps stopped in an infinite loop => hard to distinguish
non fatal/fatal errors cannot be distinguished

grep: ../../../RELEASE_NOTES: No such file or directory

TODO Comparison with existing tools (Performance, Features)

Features

What?	Description	State in P4	References
Jool EAMT	Mapping with tables, multiple entries	Supported	https://www.jool.mx/en/eamt.html, https://www.jool.mx/en/run-eam.html, RFC 7757
Jool SIIT	Mapping IPv6 to range of IPv4, one entry	Supported by EAMT
Jool Stateful NAT64			https://www.jool.mx/en/intro-xlat.html#stateful-nat64
			https://www.jool.mx/en/run-nat64.html

P4 Possible Improvements / Current Challenges / Limitations

DONE cannot read key from table

log

Key and mask for matching destination is in table. We need this information in the action. However this information is not exposed, so we need to specify another parameter with the same information as in the key(s).

Log from slack: (2019-03-14)

nico [1:55 PM] If I use LPM for matching, can I easily get the network address from P4 or do I have to use a bitmask myself? In the latter case it is not exactly clear how to get the mask from the table

Nate Foster [1:58 PM] You want to retrieve the address in the packet? In a table? And do you want to do the retrieving from the data plane or the control plane? (edited)

nico [2:00 PM] If I have a match in a table that matches on LPM, it can be any IP address in a network For calculating the NAT64/NAT46 translation, I will need the base address, i.e. network address to do subtractions/additions So it is fully data plane, what I would like to do I'll commit sample code to show the use case more clearly https://gitlab.ethz.ch/nicosc/master-thesis/blob/master/p4src/static-mapping.p4#L73 GitLab p4src/static-mapping.p4 · master · nicosc / master-thesis gitlab.ethz.ch So the action nat64_static() is used in the table v6_networks. In v6_networks I use a match on `hdr.ipv6.dst_addr: lpm;` What I would like to be able is to get the network address ; I can do that manually, if I have the mask I can also re-inject this parameter by another action argument, but I'd assume that I can somewhere read this out from the table / match

Nate Foster [2:15 PM] To make sure I understand, in the data plane, you want to retrieve the address in the lpm pattern? (edited)

nico [2:16 PM] I want to retrieve the key

Nate Foster [2:16 PM] Wait. The value `hdr.ipv6.dst_addr` is the thing used in the match. So you have that. What you don’t have is the IPv6 address and mask put into the table by the control plane. I assume you want the latter, right?

nico [2:17 PM] For example, if my matching key is 2001:db8::/32 and the real address is 2001:db8::f00, then I would like to retrieve 2001:db8:: and 32 from the table exactly 🙂 I can "fix" this by adding another argument, but it feels somewhat wrong to do that Because the table already knows this information

Nate Foster [2:26 PM] I can’t think of a way other than the action parameter hack.

nico [2:26 PM] Oh, ok Is it because the information is "lost in hardware"?

Nate Foster [2:31 PM] No you’re right that most implementations have the value in memory. And one can imagine a different table API that allowed one to retrieve it in the data plane. But unless I am missing something obvious, P4 hides it…

Result

Need to duplicate information

DONE ICMP6: checksum over payload

variable length, up to 65k

Exists!

DONE Synchronisation with the controller

Double data type definition -> might differ
TYPE_CPU for ethernet
Port ingress offset (9 vs. 16 bit)

p4c expression bug 2019-03-30

Hit in master-thesis 0.4-28-g881643e

Warning: you requested the nanomsg event logger, but bmv2 was compiled without -DBMELOG, and the event logger cannot be activated
Calling target program-options parser
[14:01:44.334] [bmv2] [D] [thread 23356] Set default default entry for table 'MyIngress.icmp6': MyIngress.controller_debug_table_id - 2,
[14:01:44.341] [bmv2] [D] [thread 23356] Set default default entry for table 'MyIngress.nat64': MyIngress.controller_debug_table_id - 1,
[14:01:44.344] [bmv2] [D] [thread 23356] Set default default entry for table 'tbl_act': act -
[14:01:44.345] [bmv2] [D] [thread 23356] Set default default entry for table 'tbl_act_0': act_0 -
[14:01:44.345] [bmv2] [D] [thread 23356] Set default default entry for table 'tbl_nat64_icmp6_generic': MyIngress.nat64_icmp6_generic -
[14:01:44.345] [bmv2] [D] [thread 23356] Set default default entry for table 'tbl_act_1': act_1 -
[14:01:44.345] [bmv2] [D] [thread 23356] Set default default entry for table 'tbl_act_2': act_2 -
[14:01:44.345] [bmv2] [D] [thread 23356] Set default default entry for table 'MyIngress.v4_networks': MyIngress.controller_debug_table_id - 5,
[14:01:44.345] [bmv2] [D] [thread 23356] Set default default entry for table 'MyIngress.v6_networks': MyIngress.controller_debug_table_id - 3,
[14:01:44.346] [bmv2] [D] [thread 23356] Set default default entry for table 'tbl_act_3': act_3 -
Invalid entry type 'expression' in field list
bad json:
{
   "type" : "expression",
   "value" : {
      "type" : "expression",
      "value" : {
         "left" : null,
         "op" : "d2b",
         "right" : {
            "type" : "field",
            "value" : [ "scalars", "metadata.chk_icmp6_na_ns" ]
         }
      }
   }
}

DONE Only one LPM key supported in tables (2019-03-23)

Priority support in ternary possible. Means rewriting for developers. Could possibly be supported by switching to ternary mode internally.

../p4src/static-mapping.p4(121): error: MyIngress.nat64, Multiple LPM keys in table
    table nat64 {
          ^^^^^
Compilation Error

Code:

    table nat64 {
        key = {
            hdr.ipv6.src_addr: lpm;
            hdr.ipv6.dst_addr: lpm;
        }
        actions = {
            controller_debug;
            nat64_static;
            NoAction;
        }
        size = NAT64_TABLE_SIZE;
        default_action = controller_debug;
    }

No table meta information for default actions (asked 2019-03-25)

Is there any meta information for "from which table was the action called" available? My use case is having a debug action that sends packets to the controller and I use it as a default_action in various tables; however know I don't know anymore from which table the action was called. Is there any kind of meta information which table called me available?

I could work around this by using if(! .. .hit) { my_action(table_id) }, but it would not work with using default_action = …

DONE No switch in actions, No conditional execution in actions

3 possible solutions

multi table (state as of 2019-03-28)
switch/if in actions: with shadow tables
switch/if in apply block

log

Imho, compiler should be able to unroll these to some degree.

../p4src/static-mapping.p4(60): error: SwitchStatement: switch statements not allowed in actions
        switch(hdr.icmp6.type) {
        ^^^^^^

../p4src/static-mapping.p4(57): error: MethodCallStatement: Conditional execution in actions is not supported on this target
        hdr.icmp.setValid();
        ^^^^^^^^^^^^^^^^^^^
../p4src/static-mapping.p4(70): error: MethodCallStatement: Conditional execution in actions is not supported on this target
        hdr.icmp6.setInvalid();
        ^^^^^^^^^^^^^^^^^^^^^^
../p4src/static-mapping.p4(73): error: MethodCallStatement: Conditional execution in actions is not supported on this target
        hdr.icmp6_na_ns.setInvalid();
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../p4src/static-mapping.p4(74): error: MethodCallStatement: Conditional execution in actions is not supported on this target
        hdr.icmp6_option_link_layer_addr.setInvalid();
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Compilation Error
p4@ubuntu:~/master-thesis/p4app$

Code:

        if(hdr.ipv6.next_header == PROTO_ICMP6) {
            nat64_icmp6();
        }

TODO Modules, OS

Not addressed so far: how to create re-usable code fragments that can be plugged in easily. There could be a hypothetical "P4OS" that manages code fragments. This might include, but not limited to downloading (signed?) source code, managing dependencies similar to Linux package management, handling updates, etc.

TODO Code sharing (controller, switch)

Many constants double defined. Easy to make errors.

Implementation description and limitations

Implementation description [move todos here]

TODO Support (non-) fragmentation

if DF bit is not set in ipv4

TODO Supporting [different] MTUs

sizes of headers are different
packet might not fit into same mtu anymore
send back "ICMP Packet Too Big messages to the sender." RFC7915

TODO pmtud support

mss change

translator MUST send a Packet Too Big error message or fragment the packet when the packet size exceeds the MTU of the next-hop interface.

https://tools.ietf.org/html/rfc7915

Limitations

IPv4 embedding (RFC6052, RFC4291)

Supported is similar to the "IPv4-Compatible IPv6 Address" as defined by rfc4291 section 2.5.5.1. Longer prefixes can be specified, but effectively last part used. Not ensuring 16 0 bits. Deprecated according to RFC4291.

Also section 2.5.5.2 "IPv4-Mapped IPv6 Address"

Only correctly support /96 prefix
Other modes also embed in last 32 bits
However supports any prefix length >= 96

Mac addresses: bit 0 = unicast (0)/multicast(1), bit 1 = local (1)/global (0) - site wiki/mac

U/L bit is universal/local, bit 2; inverting: local = 0, global = 1

No fragmentation support (yet)

In line with RFC7915

Fragmented ICMP/ICMPv6 packets will not be translated by IP/ICMP translators.

No session handling (yet)

1:1 mappings. No (automatic) session.

IPv4 / IPv6 embedding

Currently offset based - probably not following the RFC!

No DNS64

has already been solved in a different domain - could even do transparent / in network modification

Incomplete NDP

Very limited option support

NAT64 mappings not source network dependent

Only the destination network is matched for deciding on NAT64, as priority based double LPM is not supported. This limits a prefix to be used only in one network.

TODO No resolution of hardware addresses

hardcoded ip –> mac addresses

Correct version: Resolve mac address in controller, buffer packet, replay packet / handle packet. Only has to be set, when packets originate from the switch/controller.

TODO No support of IPv4 options

header is assumed to be always 20 octets

TODO Security issue: not checking checksums before

Could be implemented

Log various

2019-06-06

No device seen after loading modules after reboot - netfpga. Trying to reprogram

xsct /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/tools/run_xsct.tcl -tclargs minip4.bit

rlwrap: warning: your $TERM is 'screen' but rlwrap couldn't find it in the terminfo database. Expect some problems. RUN loading image file. minip4.bit attempting to launch hw_server

INFO: hw_server application started INFO: Use Ctrl-C to exit hw_server application

INFO: To connect to this hw_server instance use url: TCP:127.0.0.1:3121

100% 11MB 1.7MB/s 00:06

bash /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/tools/pci_rescan_run.sh

Check programming FPGA or Reboot machine !

rmmod sume_riffa

rmmod: ERROR: Module sume_riffa is not currently loaded

modprobe sume_riffa
ifconfig nf0 up

nf0: ERROR while getting interface flags: No such device

ifconfig nf1 up

nf1: ERROR while getting interface flags: No such device

ifconfig nf2 up

nf2: ERROR while getting interface flags: No such device

ifconfig nf3 up

nf3: ERROR while getting interface flags: No such device

bash config_writes.sh

root@rainbow:~/master-thesis/netpfga/minip4/simple_sume_switch/bitfiles#

Full run, messages are the same:

xsct /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/tools/run_xsct.tcl -tclargs minip4.bit

rlwrap: warning: your $TERM is 'screen' but rlwrap couldn't find it in the terminfo database. Expect some problems. RUN loading image file. minip4.bit attempting to launch hw_server

INFO: hw_server application started INFO: Use Ctrl-C to exit hw_server application

INFO: To connect to this hw_server instance use url: TCP:127.0.0.1:3121

100% 10MB 1.7MB/s 00:06

bash /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/tools/pci_rescan_run.sh

Check programming FPGA or Reboot machine !

rmmod sume_riffa

rmmod: ERROR: Module sume_riffa is not currently loaded

modprobe sume_riffa
ifconfig nf0 up

nf0: ERROR while getting interface flags: No such device

ifconfig nf1 up

nf1: ERROR while getting interface flags: No such device

ifconfig nf2 up

nf2: ERROR while getting interface flags: No such device

ifconfig nf3 up

nf3: ERROR while getting interface flags: No such device

bash config_writes.sh

[0:33] rainbow:minip4% sudo reboot

2019-06-07: exec format error

Trying to load kernel module now gives an error:

[7:05] rainbow:netpfga% . ./bashinit [7:05] rainbow:netpfga% bash build-load-drivers.sh

cd /home/nico/projects/P4-NetFPGA/lib/sw/std/driver/sume_riffa_v1_0_0
make all

sudo make install

make -C /lib/modules/5.0.0-16-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-5.0.0-16-generic' Building modules, stage 2. MODPOST 1 modules make[1]: Leaving directory 'usr/src/linux-headers-5.0.0-16-generic' install -o root -g root -m 0755 -d /lib/modules/5.0.0-16-generic/extra/sume_riffa install -o root -g root -m 0755 sume_riffa.ko lib/modules/5.0.0-16-generic/extra/sume_riffa depmod -a 5.0.0-16-generic

sudo modprobe sume_riffa

modprobe: ERROR: could not insert 'sume_riffa': Exec format error [7:06] rainbow:netpfga%

dmesg:

[ 257.356321] sume_riffa: version magic '5.0.0-15-generic SMP mod_unload ' should be '5.0.0-16-generic SMP mod_unload '

Rebuilding module:

[7:08] rainbow:sume_riffa_v1_0_0% make clean make -C /lib/modules/5.0.0-16-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-5.0.0-16-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-5.0.0-16-generic' [7:08] rainbow:sume_riffa_v1_0_0% make all make -C /lib/modules/5.0.0-16-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-5.0.0-16-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-5.0.0-16-generic' [7:08] rainbow:sume_riffa_v1_0_0% sudo make install sudo modprobe sume_riffa

The devices are back:

[7:08] rainbow:sume_riffa_v1_0_0% ip l 1: lo: <LOOPBACK,UP,LOWER_UP> 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: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000 link/ether 70:85:c2:ad:62:79 brd ff:ff:ff:ff:ff:ff 3: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DORMANT group default qlen 1000 link/ether dc:8b:28:47:5c:f7 brd ff:ff:ff:ff:ff:ff 4: nf0: <BROADCAST,MULTICAST> 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 5: nf1: <BROADCAST,MULTICAST> 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 6: nf2: <BROADCAST,MULTICAST> 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 7: nf3: <BROADCAST,MULTICAST> 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 [7:09] rainbow:sume_riffa_v1_0_0%

2019-06-08: adding table entries

mac = 02:53:55:42:45:01 (from send_packet.py)

>> list_cam_tables

lookup_table :

{u'action_ids': {u'TopPipe.do_nothing': 2, u'TopPipe.send_to_port1': 3, u'TopPipe.swap_eth_addresses': 1}, u'annotations': {u'Xilinx_ExternallyConnected': [u'0'], u'Xilinx_LookupEngineType': [u'EM'], u'name': [u'TopPipe.lookup_table']}, u'match_type': u'EM', u'p4_name': u'lookup_table', u'px_class': u'LookupEngine', u'px_name': u'lookup_table', u'px_type_name': u'lookup_table_t', u'request_fields': [{u'p4_name': u'p.ethernet.dstAddr', u'px_name': u'lookup_request_key', u'size': 48, 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': 2, u'type': u'bits'}]} >>

root@rainbow:~# ip l s nf0 up

>> table_cam_add_entry ERROR: table_cam_add_entry <table_name> <action_name> <keys> => <action_data> DESCRIPTION: Add an entry to the specified table PARAMS: <table_name> : name of the table to add an entry to <action_name> : name of the action to use in the entry (must be listed in the table's actions list) <keys> : space separated list of keys to use as the entry key (must correspond to table's keys in the order defined in the P4 program) <action_data> : space separated list of values to provide as input to the action

['']

>> table_cam_add_entry lookup_table send_to_port1 ff:ff:ff:ff:ff:ff ERROR: table_cam_add_entry <table_name> <action_name> <keys> => <action_data> DESCRIPTION: Add an entry to the specified table PARAMS: <table_name> : name of the table to add an entry to <action_name> : name of the action to use in the entry (must be listed in the table's actions list) <keys> : space separated list of keys to use as the entry key (must correspond to table's keys in the order defined in the P4 program) <action_data> : space separated list of values to provide as input to the action

['lookup_table send_to_port1 ff:ff:ff:ff:ff:ff'] [20:09] rainbow:CLI% python P4_SWITCH_CLI.py loading libsume.. loading libsume.. loading libcam.. The SimpleSumeSwitch interactive command line tool type help to see all commands >> table_cam_add_entry lookup_table send_to_port1 => ff:ff:ff:ff:ff:ff ERROR: table_cam_add_entry <table_name> <action_name> <keys> => <action_data> DESCRIPTION: Add an entry to the specified table PARAMS: <table_name> : name of the table to add an entry to <action_name> : name of the action to use in the entry (must be listed in the table's actions list) <keys> : space separated list of keys to use as the entry key (must correspond to table's keys in the order defined in the P4 program) <action_data> : space separated list of values to provide as input to the action

[20:10] rainbow:CLI%

table_cam_add_entry lookup_table send_to_port1 ff:ff:ff:ff:ff:ff => ""

2019-06-10: testing with INT (hint from Hendrik)

15:54 compile & upload done

16:36 …testing

replaced ethX with nfX

root@rainbow:~/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/int/sw/hw_test_tool# ./rcv_int.py root@rainbow:~/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/int/sw/hw_test_tool# ./int_tester.py tcpdump: listening on nf1, link-type EN10MB (Ethernet), capture size 262144 bytes The HW testing tool for the INT design type help to see all commands testing> help

Documented commands (type help <topic>): ====================================== help run_test

Undocumented commands: ==================== EOF exit

testing> run_test 0b11001 . Sent 1 packets. Sent pkt:

ETHERNET

ins_cnt:3 max_hop:10 total_hop:0 bitmask:11001

testing>

DONE Receiver does not see any packet

CLOSED: [2019-06-10 Mon 16:37]

DONE testing with tcpdump and ETH_DST = "ff:ff:ff:ff:ff:ff"

CLOSED: [2019-06-10 Mon 17:34] Sending on nf1, listenng on nf3, all interfaces up

root@rainbow:~# tcpdump -ni nf3 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on nf3, link-type EN10MB (Ethernet), capture size 262144 bytes

root@rainbow:~/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/projects/int/sw/hw_test_tool# ./int_tester.py tcpdump: listening on nf1, link-type EN10MB (Ethernet), capture size 262144 bytes The HW testing tool for the INT design type help to see all commands testing> run_test 0b11001 . Sent 1 packets. Sent pkt:

ETHERNET

ins_cnt:3 max_hop:10 total_hop:0 bitmask:11001

testing> run_test 0b11001 . Sent 1 packets. Sent pkt:

ETHERNET

ins_cnt:3 max_hop:10 total_hop:0 bitmask:11001

testing>

-> no packet received on nf3, even though commands.txt contains mapping

2019-06-10: trying to output on all ports -> unclear test data

Test data in gen_testdata.py expects order. If we output to 0b1010101 (=85), then the packet should arrive on all ports. Order unknown.

2019-06-11: rebooted -> card is missing from lspci

reprogramming. why is it missing?

[18:25] rainbow:bitfiles% sudo bash -c ". $HOME/master-thesis/netpfga/bashinit && $(pwd -P)/program_switch.sh" ++ which vivado

xilinx_tool_path=/opt/Xilinx/Vivado/2018.2/bin/vivado
bitimage=int.bit
configWrites=config_writes.sh
'[' -z int.bit ']'
'[' -z config_writes.sh ']'
'[' /opt/Xilinx/Vivado/2018.2/bin/vivado == '' ']'
rmmod sume_riffa

rmmod: ERROR: Module sume_riffa is not currently loaded

xsct /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/tools/run_xsct.tcl -tclargs int.bit

rlwrap: warning: your $TERM is 'screen' but rlwrap couldn't find it in the terminfo database. Expect some problems. RUN loading image file. int.bit attempting to launch hw_server

Xilinx hw_server v2018.2

INFO: hw_server application started INFO: Use Ctrl-C to exit hw_server application

INFO: To connect to this hw_server instance use url: TCP:127.0.0.1:3121

100% 13MB 1.7MB/s 00:08

bash /home/nico/projects/P4-NetFPGA/contrib-projects/sume-sdnet-switch/tools/pci_rescan_run.sh

Check programming FPGA or Reboot machine !

rmmod sume_riffa

rmmod: ERROR: Module sume_riffa is not currently loaded

modprobe sume_riffa
ifconfig nf0 up

nf0: ERROR while getting interface flags: No such device

ifconfig nf1 up

nf1: ERROR while getting interface flags: No such device

ifconfig nf2 up

nf2: ERROR while getting interface flags: No such device

ifconfig nf3 up

nf3: ERROR while getting interface flags: No such device

bash config_writes.sh

rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device rwaxi: ioctl: No such device

After reprogram AND reboot:

10:00.0 Memory controller: Xilinx Corporation Device 7028

2019-06-12: try broadcasting

[SW] CAM_EnableDevice() - done [2274090] INFO: finished packet stimulus file [2735572] ERROR: tuple mismatch for packet 1 expected < tuple_out_digest_data, tuple_out_sume_metadata > = < 0000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000001040000 > actual < tuple_out_digest_data, tuple_out_sume_metadata > = < 0000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000055040000 > $finish called at time : 2735572 ps : File "/home/nico/master-thesis/netpfga/minip4/nf_sume_sdnet_ip/SimpleSumeSwitch/Testbench/Check.v" Line 120 exit

-> mismatch when using expPkt on all ports -> trying to use bcast fails due to programming errors -> using bcast in the map -> breaks config_writes.py

Using bcast, following output :

SV_write_control()- done [SW] CAM_EnableDevice() - done [2274090] INFO: finished packet stimulus file [2735572] INFO: packet 1 tuple OK < tuple_out_digest_data, tuple_out_sume_metadata > = < 0000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000055040000 > [2735572] INFO: packet 1 data OK (tlast, tkeep, tdata) = (0, ffffffff, 0000000000000000000000000000000000000090012222222208022222222208) [2738904] INFO: packet 1 data OK (tlast, tkeep, tdata) = (1, ffffffff, 0000000000000000000000000000000000000000000000000000000000000000) [2745568] INFO: packet 2 tuple OK < tuple_out_digest_data, tuple_out_sume_metadata > = < 0000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000055100000 > [2745568] INFO: packet 2 data OK (tlast, tkeep, tdata) = (0, ffffffff, 0000000000000000000000000000000000000090012222222208022222222208) [2748900] INFO: packet 2 data OK (tlast, tkeep, tdata) = (1, ffffffff, 0000000000000000000000000000000000000000000000000000000000000000) [2755564] INFO: packet 3 tuple OK < tuple_out_digest_data, tuple_out_sume_metadata > = < 0000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000055400000 > [2755564] INFO: packet 3 data OK (tlast, tkeep, tdata) = (0, ffffffff, 0000000000000000000000000000000000000090012222222208022222222208) [2758896] INFO: packet 3 data OK (tlast, tkeep, tdata) = (1, ffffffff, 0000000000000000000000000000000000000000000000000000000000000000) [6094228] INFO: stopping simulation after 1000 idle cycles [6094228] INFO: all expected data successfully received [6094228] INFO: TEST PASSED $finish called at time : 6094228 ps : File "/home/nico/master-thesis/netpfga/minip4/nf_sume_sdnet_ip/SimpleSumeSwitch/Testbench/SimpleSumeSwitch_tb.sv" Line 207 exit

-> nf_sume_sdnet_ip/SimpleSumeSwitch/config_writes.txt isn't generated correctly

2019-06-13: try downgrading kernel: requires outdated libssl that is not there in 18.x

root@rainbow:/home/nico# mkdir ubuntu root@rainbow:/home/nico# mv linux-* ubuntu/ root@rainbow:/home/nico# cd ubuntu/ root@rainbow:/home/nico/ubuntu# ls linux-headers-4.10.0-32-generic_4.10.0-32.36~16.04.1_amd64.deb linux-image-4.10.0-32-generic_4.10.0-32.36~16.04.1_amd64.deb root@rainbow:/home/nico/ubuntu#

.. run-parts: executing /etc/kernel/postinst.d/zz-update-grub 4.10.0-32-generic /boot/vmlinuz-4.10.0-32-generic Sourcing file `/etc/default/grub' Sourcing file `/etc/default/grub.d/50-curtin-settings.cfg' Sourcing file `/etc/default/grub.d/init-select.cfg' Generating grub configuration file … Found linux image: /boot/vmlinuz-5.0.0-16-generic Found initrd image: /boot/initrd.img-5.0.0-16-generic Found linux image: /boot/vmlinuz-5.0.0-15-generic Found initrd image: /boot/initrd.img-5.0.0-15-generic Found linux image: /boot/vmlinuz-4.10.0-32-generic Found initrd image: /boot/initrd.img-4.10.0-32-generic done Errors were encountered while processing: linux-headers-4.10.0-32-generic root@rainbow:/home/nico/ubuntu#

2019-06-13: reminder: no ubuntu 16.04 originally due to broken packages

2019-06-13: re-installing ubuntu 16.04 fails w/ disk detection issues

trying 2 different computers
trying 2 different disks
erased partition table

Only worked after creating a sample partition

2019-06-13: reinstall sdnet: next button doesn't work on ubuntu 16.04

java traceback when trying to install sdnet

Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: Window must not be zero at java.desktop/sun.awt.X11.XAtom.checkWindow(Unknown Source) at java.desktop/sun.awt.X11.XAtom.getAtomData(Unknown Source) at java.desktop/sun.awt.X11.XToolkit.getWorkArea(Unknown Source) at java.desktop/sun.awt.X11.XToolkit.getInsets(Unknown Source) at java.desktop/sun.awt.X11.XToolkit.getScreenInsets(Unknown Source) at java.desktop/java.awt.Window.init(Unknown Source) at java.desktop/java.awt.Window.<init>(Unknown Source) at java.desktop/java.awt.Window.<init>(Unknown Source) at java.desktop/java.awt.Dialog.<init>(Unknown Source) at java.desktop/java.awt.Dialog.<init>(Unknown Source) at java.desktop/javax.swing.JDialog.<init>(Unknown Source) at java.desktop/javax.swing.JOptionPane.createDialog(Unknown Source) at java.desktop/javax.swing.JOptionPane.createDialog(Unknown Source) at j.a.c(Unknown Source) at j.a.a(Unknown Source) at j.a.a(Unknown Source) at j.a.c(Unknown Source) at com.xilinx.installer.gui.panel.destination.b.a(Unknown Source) at com.xilinx.installer.gui.panel.destination.DestinationPanel.z(Unknown Source) at com.xilinx.installer.gui.E.a(Unknown Source) at com.xilinx.installer.gui.InstallerGUI.l(Unknown Source) at com.xilinx.installer.gui.i.actionPerformed(Unknown Source) at java.desktop/javax.swing.AbstractButton.fireActionPerformed(Unknown Source) at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) at java.desktop/javax.swing.DefaultButtonModel.setPressed(Unknown Source) at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source) at java.desktop/java.awt.Component.processMouseEvent(Unknown Source) at java.desktop/javax.swing.JComponent.processMouseEvent(Unknown Source) at java.desktop/java.awt.Component.processEvent(Unknown Source) at java.desktop/java.awt.Container.processEvent(Unknown Source) at java.desktop/java.awt.Component.dispatchEventImpl(Unknown Source) at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source) at java.desktop/java.awt.Component.dispatchEvent(Unknown Source) at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source) at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Unknown Source) at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Unknown Source) at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source) at java.desktop/java.awt.Window.dispatchEventImpl(Unknown Source) at java.desktop/java.awt.Component.dispatchEvent(Unknown Source) at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.desktop/java.awt.EventQueue.access$500(Unknown Source) at java.desktop/java.awt.EventQueue$3.run(Unknown Source) at java.desktop/java.awt.EventQueue$3.run(Unknown Source) at java.base/java.security.AccessController.doPrivileged(Native Method) at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) at java.desktop/java.awt.EventQueue$4.run(Unknown Source) at java.desktop/java.awt.EventQueue$4.run(Unknown Source) at java.base/java.security.AccessController.doPrivileged(Native Method) at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)

Reason was a hidden window. *

2019-06-13: try using external card for packets

2019-06-14: test adding table entry with ubuntu 16.04, kernel 4.15.0-51-generic

[12:05] rainbow16:CLI% ./P4_SWITCH_CLI.py loading libsume.. loading libsume.. loading libcam.. The SimpleSumeSwitch interactive command line tool type help to see all commands >> table_cam_add_entry lookup_table send_to_port1 ff:ff:ff:ff:ff:ff => CAM_Init_ValidateContext() - done WROTE 0x44020050 = 0xffffffff WROTE 0x44020054 = 0xffff WROTE 0x44020080 = 0x0003 python: ioctl: Unknown error 512 [12:05] rainbow16:CLI%

2019-06-14: try finding pre compiled bitfiles that can be tested

2019-06-14: re-verify hardware

Using https://github.com/NetFPGA/NetFPGA-SUME-public/wiki/Acceptance-Test-Project

[13:33] rainbow16:acceptance_test% make cores

for lib in ./std/cores/nf_sume_10g_interface_shared_logic ./std/cores/nf_axis_gen_chk ./std/cores/nf_sume_10g_interface ./digilent/cores/d_clkfreq_detector ./digilent/cores/nf_sume_gpio_test ./digilent/cores/d_sdctrl ; do\ make -C ip_repo/$lib clean; \ make -C ip_repo/$lib; \ done; make[1]: Entering directory '/home/nico/NetFPGA-SUME-live/projects/acceptance_test/ip_repo/std/cores/nf_sume_10g_interface_shared_logic' rm -rf generated_ip for i in nf_sume_10g_pcs_pma_ff_synchronizer_rst2.v nf_sume_10g_pcs_pma_gt_common.v; do \ rm hdl/$i -fv; \ done; rm -rf vivado* rm -rf .Xil rm -rf nf_sume_10g_interface_shared_logic_project rm -rf component.xml rm -rf xgui make[1]: Leaving directory '/home/nico/NetFPGA-SUME-live/projects/acceptance_test/ip_repo/std/cores/nf_sume_10g_interface_shared_logic' make[1]: Entering directory '/home/nico/NetFPGA-SUME-live/projects/acceptance_test/ip_repo/std/cores/nf_sume_10g_interface_shared_logic' WARNING: Ignoring invalid XILINX_PATH location /opt/Xilinx/Vivado/2016.4. Resolution: An invalid XILINX_PATH location has been detected. To resolve this issue:

Verify the value of XILINX_PATH is accurate by viewing the value the variable via 'set XILINX_PATH' for Windows or 'echo $XILINX_PATH' for Linux, and update it as needed.
To unset the variable using on Windows using 'set XILINX_PATH=' or remove it from Advanced System Settings\Environment Variables. On Linux 'unsetenv XILINX_PATH'

WARNING: [Common 17-1271] The MYVIVADO environment variable specifies an invalid location '/opt/Xilinx/Vivado/2016.4' source ../tcl/nf_sume_pcs_pma_compile.tcl

INFO: [IP_Flow 19-234] Refreshing IP repositories INFO: [IP_Flow 19-1704] No user IP repositories specified

[14:39] rainbow16:acceptance_test% make test python sw/host/script/NfSumeTest.py Traceback (most recent call last): File "sw/host/script/NfSumeTest.py", line 45, in <module> import wx ImportError: No module named wx Makefile:55: recipe for target 'test' failed make: * [test] Error 1 [14:40] rainbow16:acceptance_test%

… [14:39] rainbow16:acceptance_test% make test python sw/host/script/NfSumeTest.py Traceback (most recent call last): File "sw/host/script/NfSumeTest.py", line 45, in <module> import wx ImportError: No module named wx Makefile:55: recipe for target 'test' failed make: * [test] Error 1 [14:40] rainbow16:acceptance_test%

[14:40] rainbow16:acceptance_test% make test python sw/host/script/NfSumeTest.py Traceback (most recent call last): File "sw/host/script/NfSumeTest.py", line 52, in <module> import serial ImportError: No module named serial Makefile:55: recipe for target 'test' failed make: * [test] Error 1 [14:41] rainbow16:acceptance_test%

root@rainbow16:~# apt install python-serial

Trying to run make test -> various path erros -> trying sudo bash

root@rainbow16:~/NetFPGA-SUME-live/projects/acceptance_test# . ~nico/master-thesis/netpfga/bashinit

2019-06-15: downloading / uploading reference switch

2019-06-15: Testing with external host: seems like my minip4 switch actually works!

22:18:39.824461 IP6 2001:db8::1 > ff02::1:ff00:2: ICMP6, neighbor solicitation, who has 2001:db8::2, length 32 22:18:40.848171 IP6 2001:db8::1 > ff02::1:ff00:2: ICMP6, neighbor solicitation, who has 2001:db8::2, length 32 22:18:40.848292 IP6 2001:db8::1 > ff02::1:ff00:2: ICMP6, neighbor solicitation, who has 2001:db8::2, length 32 22:18:41.872171 IP6 2001:db8::1 > ff02::1:ff00:2: ICMP6, neighbor solicitation, who has 2001:db8::2, length 32 22:18:41.872286 IP6 2001:db8::1 > ff02::1:ff00:2: ICMP6, neighbor solicitation, who has 2001:db8::2, length 32 22:18:58.848012 IP6 2001:db8::1.5353 > ff02::fb.5353: 0 [2q] PTR (QM)? _ipps._tcp.local. PTR (QM)? _ipp._tcp.local. (45) 22:18:58.848058 IP6 2001:db8::1.5353 > ff02::fb.5353: 0 [2q] PTR (QM)? _ipps._tcp.local. PTR (QM)? _ipp._tcp.local. (45) 22:20:02.849843 IP6 2001:db8::1.5353 > ff02::fb.5353: 0 [2q] PTR (QM)? _ipps._tcp.local. PTR (QM)? _ipp._tcp.local. (45) 22:20:02.849894 IP6 2001:db8::1.5353 > ff02::fb.5353: 0 [2q] PTR (QM)? _ipps._tcp.local. PTR (QM)? _ipp._tcp.local. (45) 22:22:10.850831 IP6 2001:db8::1.5353 > ff02::fb.5353: 0 [2q] PTR (QM)? _ipps._tcp.local. PTR (QM)? _ipp._tcp.local. (45) 22:22:10.850950 IP6 2001:db8::1.5353 > ff02::fb.5353: 0 [2q] PTR (QM)? _ipps._tcp.local. PTR (QM)? _ipp._tcp.local. (45)

Problem:

So basically riffa_sume doesn't do the right thing[tm]

Message from myself:

It seems I was really mistaken for the last weeks If I am not totally mistaken, the following is happening with the netpfga: I was testing sending and receiving packets on the same computer; so I sent a packet on nfX and expected an answer on nf0, which is how I wanted to verify that the card works So I ran tcpdump on nf0, send a packet with ping6 and scapy on nf{0,1,2,3} (edited) I have never seen the switch emitting ANY packet back with tcpdump Now with the card connected to another host, sending neighbor solicitation, I see duplicated packets on the other host - so it seems that it might have worked all the time, just that tcpdump on nfX on the host which contains the card does not show the packets

The testscript now generates 2 packets:

root@naked:~# cat foo.py #!/usr/bin/python3

import sys from scapy.all import *

if name == 'main': iface = sys.argv[1]

e = Ether(src="02:53:55:42:45:01", dst='ff:ff:ff:ff:ff:ff')

i = IPv6(src = "2001:db8:42::1", dst = "2001:db8::2")

t = TCP(dport=80, sport=random.randint(49152,65535))

d = "A"

pkg = e / i / t / d

sendp(pkg, iface=iface, verbose=True)

root@naked:~#

22:27:34.542877 IP6 2001:db8:42::1.63186 > 2001:db8::2.80: Flags [S], seq 0:1, win 8192, length 1: HTTP 22:27:34.542982 IP6 2001:db8:42::1.63186 > 2001:db8::2.80: Flags [S], seq 0:1, win 8192, length 1: HTTP

2019-06-17: Testing hardware: test tool seems not to work

Compiling tests -> ok
Select test -> ok
Run test -> nothing happens, tests gets unchecked

[ddr3B]: Running Auto Test

Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/_core.py", line 16765, in <lambda> lambda event: event.callable(*event.args, **event.kw) ) File "sw/host/script/NfSumeTest.py", line 848, in UpdateProgress self.progressDlg.Update(self.curProgress, str(localLine)) File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/_core.py", line 16710, in getattr raise PyDeadObjectError(self.attrStr % self._name) wx._core.PyDeadObjectError: The C++ part of the NfSumeProgress object has been deleted, attribute access no longer allowed. Exception in thread Thread-18: Traceback (most recent call last): File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner self.run() File "sw/host/script/NfSumeTest.py", line 947, in run self.target(*self.data) File "sw/host/script/NfSumeTest.py", line 355, in StartAutoTest self.TestInterface(testName) File "sw/host/script/NfSumeTest.py", line 465, in TestInterface self.ProgramFpga('../../../bitfiles/' + self.nfSumeTestConfiguration[testName]['bitstream']) File "sw/host/script/NfSumeTest.py", line 586, in ProgramFpga self.getFpgaIndex() File "sw/host/script/NfSumeTest.py", line 574, in getFpgaIndex p = Popen(['djtgcfg', 'init', '-d', 'NetSUME'], stdout=PIPE, bufsize = 1) File "/usr/lib/python2.7/subprocess.py", line 711, in init errread, errwrite) File "/usr/lib/python2.7/subprocess.py", line 1343, in _execute_child raise child_exception OSError: [Errno 2] No such file or directory

Might come from:

zsh: command not found: djtgcfg [10:32] rainbow16:~% find /opt -name djtgcfg

-> does not exist anywhere

[10:34] rainbow16:NetFPGA-SUME-live% grep -r djtgcfg . ./projects/acceptance_test/sw/host/script/NfSumeTest.py: p = Popen(['djtgcfg', 'init', '-d', 'NetSUME'], stdout=PIPE, bufsize = 1) ./projects/acceptance_test/sw/host/script/NfSumeTest.py: #p = Popen(['djtgcfg', 'prog', '-d', 'NetSUME', '-i', self.fpgaIndex, '-f', ./tools/scripts/load_bitfile.py: p = Popen(['djtgcfg', 'init', '-d', 'NetSUME'], stdout=PIPE, bufsize = 1)

Likely requires "Installation of Digilent Adept Tools"

https://reference.digilentinc.com/reference/software/adept/start

(website does not load as of 2019-06-17, 10:39)!

Install deb that supports the hardware test:

10-ipv6-privacy.conf Desktop digilent.adept.runtime_2.19.2-amd64.deb root@rainbow16:~# dpkg -i digilent.adept.runtime_2.19.2-amd64.deb Selecting previously unselected package digilent.adept.runtime. (Reading database … 275077 files and directories currently installed.) Preparing to unpack digilent.adept.runtime_2.19.2-amd64.deb … Unpacking digilent.adept.runtime (2.19.2) … Setting up digilent.adept.runtime (2.19.2) … Processing triggers for libc-bin (2.23-0ubuntu11) … root@rainbow16:~#

The required tool does not seem to be included in the adept runtime:

root@rainbow16:~# dpkg -l | grep digilent ii digilent.adept.runtime 2.19.2 amd64 Digilent Adept Runtime root@rainbow16:~# dpkg -L digilent.adept.runtime | grep djtgcfg root@rainbow16:~#

Trying -tools as well

[12:55] line:Downloads% scp digilent.adept.utilities_2.2.1-amd64.deb root@rainbow16.place6.ungleich.ch: digilent.adept.utilities_2.2.1-amd64.deb 100% 465KB 1.2MB/s 00:00 [12:56] line:Downloads%

root@rainbow16:~# ls 10-ipv6-privacy.conf Desktop digilent.adept.runtime_2.19.2-amd64.deb digilent.adept.utilities_2.2.1-amd64.deb root@rainbow16:~# dpkg -i digilent.adept.utilities_2.2.1-amd64.deb Selecting previously unselected package digilent.adept.utilities. (Reading database … 275201 files and directories currently installed.) Preparing to unpack digilent.adept.utilities_2.2.1-amd64.deb … Unpacking digilent.adept.utilities (2.2.1) … Setting up digilent.adept.utilities (2.2.1) … Processing triggers for man-db (2.7.5-1) … root@rainbow16:~# which djtgcfg /usr/bin/djtgcfg root@rainbow16:~#

New error from the hardware test:

[pcie]: Running Auto Test

Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/_core.py", line 16765, in <lambda> lambda event: event.callable(*event.args, **event.kw) ) File "sw/host/script/NfSumeTest.py", line 848, in UpdateProgress self.progressDlg.Update(self.curProgress, str(localLine)) File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/_core.py", line 16710, in getattr raise PyDeadObjectError(self.attrStr % self._name) wx._core.PyDeadObjectError: The C++ part of the NfSumeProgress object has been deleted, attribute access no longer allowed. Exception in thread Thread-21: Traceback (most recent call last): File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner self.run() File "sw/host/script/NfSumeTest.py", line 947, in run self.target(*self.data) File "sw/host/script/NfSumeTest.py", line 466, in TestInterface self.serialCon.readlines() File "/usr/lib/python2.7/dist-packages/serial/serialposix.py", line 495, in read raise SerialException('device reports readiness to read but returned no data (device disconnected or multiple access on port?)') SerialException: device reports readiness to read but returned no data (device disconnected or multiple access on port?)

2019-06-17: checksum delta / diff approach

crc / checksum operation

"The checksum field is the 16 bit one's complement of the one's complement sum of all 16-bit words in the header and text." https://en.wikipedia.org/wiki/Transmission_Control_Protocol#Checksum_computation

2019-06-21: create table entries on new card

>> table_cam_add_entry lookup_table send_to_port1 ff:ff:ff:ff:ff:ff => CAM_Init_ValidateContext() - done WROTE 0x44020050 = 0xffffffff WROTE 0x44020054 = 0xffff WROTE 0x44020080 = 0x0003 READ 0x44020044 = 0x0001 WROTE 0x44020040 = 0x0001 READ 0x44020044 = 0x0001 READ 0x44020044 = 0x0001 success >>

References / Follow up

RFC 791 IPv4 https://tools.ietf.org/html/rfc791

RFC 792 ICMP https://tools.ietf.org/html/rfc792

RFC 826 ARP https://tools.ietf.org/html/rfc826

RFC 1017 ICMP checksum https://tools.ietf.org/html/rfc1071

Related to RFC 6052, Host identifier

RFC 2373 IP Version 6 Addressing Architecture

Referenced by RFC2464
Obsoleted by RFC3513

RFC 2460 IPv6 (Checksum https://tools.ietf.org/html/rfc2460#section-8.1)

RFC 2464 Transmission of IPv6 Packets over Ethernet Networks https://tools.ietf.org/html/rfc2464

embedding of Mac addresses

RFC 3810 MLD2 https://tools.ietf.org/html/rfc3810

RFC 4038 Application Aspects of IPv6 Transition https://tools.ietf.org/html/rfc4038

Ref by RFC4291 / mapped ipv4

RFC 4291 IP Version 6 Addressing Architecture https://tools.ietf.org/html/rfc4291

RFC 4443 ICMPv6 https://tools.ietf.org/html/rfc4443

RFC 4861: https://tools.ietf.org/html/rfc4861 Neighbor discovery

RFC 6052: https://tools.ietf.org/html/rfc6052 IPv6 Addressing of IPv4/IPv6 Translators - first NAT64??

RFC 6145 IP/ICMP Translation Algorithm

Obsoleted by 7915

RFC 6146 Stateful nat http://tools.ietf.org/html/rfc6146

Referenced from Jool

RFC 6147 DNS64 https://tools.ietf.org/html/rfc6147

RFC 6586 for deployment experiences using Stateful NAT64.

RFC 7757 Explicit Address Mappings for Stateless IP/ICMP Translation - https://tools.ietf.org/html/rfc7757

RFC 7915 IP/ICMP Translation Algorithm https://tools.ietf.org/html/rfc7915

Requires RFC 6144
MUST support one or more address mapping algorithms, which are defined in Section 6.
does not translate IPv6 extension headers except the Fragment Header.

EAMT/Jool: https://www.jool.mx/en/eamt.html

Solicited node multicast address https://en.wikipedia.org/wiki/Solicited-node_multicast_address

Scapy / IPv6: https://www.idsv6.de/Downloads/IPv6PacketCreationWithScapy.pdf

V1 model: https://github.com/p4lang/p4c/blob/master/p4include/v1model.p4

Cisco NAT64 https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_nat/configuration/xe-3s/nat-xe-3s-book/iadnat-stateful-nat64.pdf

Wiki_mac: https://en.wikipedia.org/wiki/MAC_address

DONE Initial administration

DONE Clarify PDF / form with Denise Spicher: free form description

DONE Create task description to be handed in mystudies

DONE Create list of tasks / initial brainstorming

DONE Get OK from Ueli Maurer that thesis is valid in Information Security Area

DONE Find out how-when-whom-where to meet / define schedule

DONE Latex and/or org-mode for the thesis? org for starting

DONE Add initial milestones

180d plan

25w

DONE Proposal / task description

Task description for mystudies

High speed NAT64 with P4

Currently there are two main open source NAT64 solution available: tayga and jool. The former is a single threaded, cpu bound user space solution, the latter a custom Linux kernel module.

This thesis challenges this status quo by developing a P4 based solution supporting all features of jool/tayga and comparing the performance, security and adaptivity of the solutions.

Milestone 1: Stateless NAT64/NAT46 translations in P4
Milestone 2: Stateful (dynamic) NAT64/NAT46 translations
Milestone 3: Hardware adaption

Original ideas

Proposal 1: Automating NAT64 with P4

In IPv6 only data centers IPv4 connectivity is still a business requirement. Current state of the art methods include layer 7 proxying or static assignments. both featuring static assignments.

A flexible, dynamic assignment of IPv4 addresses to IPv6 hosts, similar to lease times in DHCPv4 and prefix delegations in DHCPv6 could reduce the pressure on IPv4 addresses.

I would suggest the develop of a new protocol (likely UDP embedded) that allows hosts to request on-network support for IPv4 addresses. As IPv4 addresses have to be treated as "expensive", an accounting metric has to be introduced. While in the business world this is usually related to money, in the network world IPv4 users could be paying the network by (reduced) bandwidth.

If such a metric existed, devices attached to the network could also try to negotiate and wait for using IPv4, when the price / penality for IPv4 is low (this might be very suitable for mail exchangers for instance).

Proposal 2: High speed NAT64 with P4

Currently there are two main open source NAT64 solution available: tayga[0] and jool[1]. The former is a single threaded, cpu bound user space solution, the latter a custom Linux kernel module.

I would like to challenge this status quo and develop a P4 based solution supporting all features of jool/tayga and comparing the performance and adaptivity of the solutions.

[0] http://www.litech.org/tayga/ [1] https://www.jool.mx/en/index.html

Proposal 3: Challenging the status quo with IPv10

The de facto standard in networking is to treat IPv4 and IPv6 as "impossible to combine". This proposal is to challenge this notion with three different methods:

Extensions to IPv4 to request remote IPv6 transport
Extensions to IPv6 to request remote IPv4 transport
Support in network equipment to handle the extensions

As the IPv4 header does not allow embedding IPv6 addresses due to size limitations, embedding the destination address in a secondary header might be necessary (possibly encapsulated in UDP).

270 KiB Raw Blame History Unescape Escape

Time table / log

Thesis implementation

DONE Setup test VM for P4: 2a0a:e5c0:2:12:400:f0ff:fea9:c3e3

DONE Get feature list of jool

DONE Get feature list of tayga

DONE Setup P4 base / structure

DONE Create minimal controller for populating tables

DONE Checkout / review egress settings

DONE Create Basis to translate ipv6 –> ipv4 with a (freely programmable) prefix; test ping6_switch

DONE Insert prefix into switch: v6_networks

DONE Support multiple ipv6 source networks: need new table w/ 2 keys! -> not at the moment

DONE Write test.py to generate correct destination packets

DONE Using test.py, new NDP packets been seen, bur zero icmp on the outgoing side

DONE Debug why neighbor discover does not work anymore

log

Do we have routing for fe80::/10? Probably not. Shouldn't we see it in the controller then?

NDP is controller only!

DONE Finish NDP in switch

DONE Need to set R/S/O bits

DONE Need to parse R/S/O bits

DONE Maybe merge v6_address and v6_networks - /128 is the same

DONE Implement address learning? -> not at the moment

DONE Not sure whether we should react on router solicitation -> not at the moment

DONE Implement the calculation

DONE Sketch the flow for session handling for icmp6 w/o packet loss

DONE Create table entry for mapping v4->v6 [net]

DONE Create table entry for mapping v6->v4 [net]

DONE Implement ICMP <-> ICMP6 translation

DONE 2019-02-28 / icmp testing / first NDP steps

DONE pinging in router mode: nothing shown in the controller, multicast forwarded -> "ok"

DONE special rule for ff02::1:ff00:42

DONE Parse icmp

DONE Parse icmpv6

DONE Add (static) egress configuration

DONE Calculate ICMP6 checksums in controller

Need to include the payload!?!!

DONE Implement minimal neighbor discovery in controller

DONE For the switch

DONE Register IPv6 address in table

DONE Parse ICMPv6 up to neighbor solicitation -> no: checksum problem

DONE Use NDP (Neighbor Solicitation (NDP) , Neighbor Advertisement (NDP)) -> no: controller

Approach 2: use cpu header, forward information to controller

DONE Fix the ip address match/mapping: 42 -> 2a -> use hex originally

DONE Find out why wrong type is used -> overlapping with NDP

Disable debug by default -> gives correct packets

DONE For other nodes -> multicast

TODO Maybe implement link local addresses (missing at the moment)

ff02::/??

rfc4861

DONE multicasting / groups

If destination is within ff02::1:ff00:0/104, multicast

DONE Make switch answer icmp6 echo request for

DONE Introduce mixed mode: switch: icmp6 echo reply, controller: NDP

DONE try 1: reply seen, but checksum is incorrect

DONE try 2: analysing tagya checksumming code

DONE Add default route for v6 hosts

DONE TEST ping6ing an emulated ipv6 host / Translate icmp <-> icmp6: test v6_static_mapping

DONE try1: only packets on h1 + controller -> wrong checksum 2019-03-25

DONE try2: checksum ok, but no packets on h3

DONE Setup a default rule for the IPv4 world to debug on controller

DONE try3: re-rewrite: no packets on h3 again (2019-03-30)

DONE try4: h3 receives packet, but length seems to be off

TODO Correct IPv4 header checksum

TODO Correct ICMP header checksum

TODO Fix length issue

DONE try5: packet is good, but routing is "strange": default route == 10.0.0.66

DONE try6: host sees packet, but does not react on it, manually tring gateway ping

DONE try7: checkout dump from ping4_gw-2019-03-31-0916-h3.pcap: regular arp

DONE Get a real world arp trace

TODO Implement default route handling, maybe implement ARP?

DONE create arp table

TODO Multiple tables not supported

Entry in v4_networks?

DONE Add table name support in debug messages

DONE Why getting IPv6 packets in

DONE Solve logic problem: Valid headers

DONE Check translated fields

DONE source correctly translated to 10.1.1.1

DONE destination correctly translated to 10.0.0.1 -> pings h3

270 KiB

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