selftests: add script to stress-test nft packet path vs. control plane
[ Upstream commit 25d8bced ] Start flood ping for each cpu while loading/flushing rulesets to make sure we do not access already-free'd rules from nf_tables evaluation loop. Also add this to TARGETS so 'make run_tests' in selftest dir runs it automatically. This would have caught the bug fixed in previous change ("netfilter: nf_tables: do not skip inactive chains during generation update") sooner. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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