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The simple search for the rule in save output accepted arbitrary leading
and trailing rule parts. This was partly desired as it allowed to omit
the leading '-A' flag or ignore the mandatory '-j CONTINUE' in ebtables
rules, though it could hide bugs.
Introduction of fast mode mitigated this due to the way how it searches
for multiple rules at the same time, but there are cases which fast mode
does not support yet (e.g. test cases containing variant-specific rule
output).
Given save output format will never contain the rule in first or last
line, so enclosing the searched rule in newline characters is sufficient
to make the search apply to full lines only. The only drawback is having
to add '-A' and '-j CONTINUE' parts if needed.
The hidden bugs this revealed were:
- Long --nflog-prefix strings are not cut to 64 chars with iptables-nft
- The TCPMSS rule supposed to fail with legacy only must specify an
expected save output
Signed-off-by: Phil Sutter <phil@nwl.cc>
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Some test results are not consistent between variants:
* CLUSTERIP is not supported with nft_compat, so all related tests fail
with iptables-nft.
* iptables-legacy mandates TCPMSS be combined with SYN flag match,
iptables-nft does not care. (Or precisely, xt_TCPMSS.ko can't validate
match presence.)
Introduce an optional fourth test spec field to specify the variant it
applies to. Consequently, the opposite result is expected with the other
variant.
Signed-off-by: Phil Sutter <phil@nwl.cc>
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Instead of using iptables-save-formatted files in the tests/ dir,
lets use the iptables-test.py framework for all matches/targets.
This obsoletes tests/ completely, will be removed in followup patch.
Suggested-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
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