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Without this fix, flowgen.py generates bad tcp pkts.
tcpdump reports "bad hdr length 4 - too short" with the pcap
generated by flowgen.py
This patch is to correct pkt data endianness
Signed-off-by: lic121 <lic121@chinatelecom.cn>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
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Length in Data Link Header for these packets should not include
source and destination MACs or the length field itself.
Therefore, it should be 14 bytes less, otherwise other network
tools like wireshark complains:
Expert Info (Error/Malformed):
Length field value goes past the end of the payload
Additionally fixing the printing of the packet/flow configuration,
as it currently prints '%s=%s' strings without any real data.
Acked-by: Paolo Valerio <pvalerio@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
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Python 2 reaches end-of-life on January 1, 2020, which is only
a few months away. This means that OVS needs to stop depending
on in the next release that should occur roughly that same time.
Therefore, this commit removes all support for Python 2. It
also makes Python 3 a mandatory build dependency.
Some of the interesting consequences:
- HAVE_PYTHON, HAVE_PYTHON2, and HAVE_PYTHON3 conditionals have
been removed, since we now know that Python3 is available.
- $PYTHON and $PYTHON2 are removed, and $PYTHON3 is always
available.
- Many tests for Python 2 support have been removed, and the ones
that depended on Python 3 now run unconditionally. This allowed
several macros in the testsuite to be removed, making the code
clearer. This does make some of the changes to the testsuite
files large due to indentation level changes.
- #! lines for Python now use /usr/bin/python3 instead of
/usr/bin/python.
- Packaging depends on Python 3 packages.
Acked-by: Numan Siddique <nusiddiq@redhat.com>
Tested-by: Numan Siddique <nusiddiq@redhat.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
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+Traceback (most recent call last):
+ File "../.././flowgen.py", line 204, in <module>
+ flows = os.fdopen(3, 'wb')
+OSError: [Errno 9] Bad file descriptor
./library.at:4: exit code was 1, expected 0
Unfortunately 3/4/5/.. FDs don't work on Windows. Switch to a filename open
instead of opening the FDs.
Signed-off-by: Alin Gabriel Serdean <aserdean@ovn.org>
Acked-by: Ben Pfaff <blp at ovn.org>
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Perl is unfashionable and Python is more widely available and understood,
so this commit converts one of the OVS uses of Perl into Python.
Signed-off-by: Ben Pfaff <blp@ovn.org>
Acked-by: Aaron Conole <aconole@redhat.com>
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