1294 lines
84 KiB
Org Mode
1294 lines
84 KiB
Org Mode
* 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 | |
|
||
| | - 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 | |
|
||
| | | |
|
||
| | | |
|
||
| | | |
|
||
| 2019-03-30 | NAT64 1:1 table ICMP, ICMPv6 working | |
|
||
| | Will need some switch local ip addresses | |
|
||
| | | |
|
||
| | | |
|
||
| 2019-04-12 | NAT64 1:1 table TCP/UDP working | |
|
||
| | | |
|
||
| | | |
|
||
| 2019-03-29 | Jool SIIT / range / offset support https://www.jool.mx/en/run-vanilla.html | |
|
||
| | Jool EAMT support https://www.jool.mx/en/run-eam.html | |
|
||
| | Bidirectional support | |
|
||
| | Will need IPv6 embedding suport https://tools.ietf.org/html/rfc6052 | |
|
||
| | | |
|
||
| 2019-04-05 | NAT64 prefix based IPv6->IPv4 conversion [tayga] | |
|
||
| | Use case: IPv6 hosts send to specific /96 | |
|
||
| | | |
|
||
| 2019-04-19 | NAT64 dynamic pool implementation: n:m ipv6 to ipv4 mapping | |
|
||
| | And n:1 stateful mappings https://www.jool.mx/en/run-nat64.html | |
|
||
| | Needs active controller | |
|
||
| | Needs timeout / leases | |
|
||
| | | |
|
||
| 2019-05-10 | Benmarking results between P4, Jool, Tayga | |
|
||
| | Real hardware of advantage | |
|
||
| | | |
|
||
| | | |
|
||
| | | |
|
||
| | | |
|
||
| 2019-08-01 | Latest start writing documentation | |
|
||
| 2019-08-21 | hand in thesis | |
|
||
* Topics / Tasks
|
||
** Admin
|
||
*** DONE Clarify PDF / form with Denise Spicher: free form description
|
||
*** TODO Create task description to be handed in mystudies
|
||
*** DONE Create list of tasks / initial brainstorming
|
||
*** TODO Get OK from Ueli Maurer that thesis is valid in Information Security Area
|
||
*** TODO Find out how-when-whom-where to meet / define schedule
|
||
*** TODO Latex and/or org-mode for the thesis?
|
||
*** TODO Add initial milestones
|
||
**** 180d plan
|
||
**** 25w
|
||
** 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
|
||
*** 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 file:///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 file:///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 Implement ICMP <-> ICMP6 translation
|
||
**** 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$
|
||
**** Implement IPv4 side handling
|
||
***** TODO Make switch answer icmp echo request for
|
||
***** TODO Add default route for v4 hosts
|
||
**** TODO Translate ipv6 --> ipv4 with a (freely programmable) prefix
|
||
***** DONE Insert prefix into switch: v6_networks
|
||
***** TODO Support multiple ipv6 source networks: need new table w/ 2 keys! -> later
|
||
***** 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')
|
||
***** 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 |>>>>
|
||
|
||
***** TODO Debug why neighbor discover does not work anymore
|
||
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 |>>>>
|
||
****** Do we have a routing for fe80::/10? Probably not. Shouldn't we see it in the controller then?
|
||
****** TODO Implement address learning?
|
||
|
||
|
||
***** TODO Implement the calculation
|
||
***** TODO 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 (?)
|
||
|
||
**** TODO Translate icmp <-> icmp6
|
||
**** TODO Create table entry for mapping v4->v6 [net]
|
||
**** TODO Create table entry for mapping v6->v4 [net]
|
||
*** TODO Setup test VM [dual stack] for Jool:
|
||
*** TODO Setup test VM [dual stack] for tayga:
|
||
*** 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?
|
||
** Thesis documentation
|
||
*** 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
|
||
|
||
*** 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 (?)
|
||
*** P4 based implementation
|
||
TBD
|
||
**** 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
|
||
**** 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
|
||
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
|
||
|
||
**** Requirements
|
||
*** Performance comparison
|
||
*** Feature/Functionality difference / overview / Challenges / limitations in P4
|
||
**** P4: cannot read key from table
|
||
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 :slightly_smiling_face:
|
||
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…
|
||
|
||
**** ICMP6: checksum over payload
|
||
- variable length, up to 65k
|
||
**** Synchronisation with the controller
|
||
- Double data type definition -> might differ
|
||
- TYPE_CPU for ethernet
|
||
- Port ingress offset (9 vs. 16 bit)
|
||
|
||
**** (current) Limitations
|
||
***** No fragmentation support (yet)
|
||
***** 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
|
||
|
||
*** References / Follow up
|
||
**** RFC 2460 IPv6 (Checksum https://tools.ietf.org/html/rfc2460#section-8.1)
|
||
**** RFC 3810 MLD2 https://tools.ietf.org/html/rfc3810
|
||
**** 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
|
||
**** RFC 6586 for deployment experiences using Stateful NAT64.
|
||
**** RFC 7757 Explicit Address Mappings for Stateless IP/ICMP Translation
|
||
**** 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
|
||
* 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).
|
||
* Detail LOG
|
||
** 2019-02-28
|
||
*** 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
|
||
*** TODO 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?
|