selftests/bpf: Add selftests for raw syncookie helpers

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This commit adds selftests for the new BPF helpers:
bpf_tcp_raw_{gen,check}_syncookie_ipv{4,6}.

xdp_synproxy_kern.c is a BPF program that generates SYN cookies on
allowed TCP ports and sends SYNACKs to clients, accelerating synproxy
iptables module.

xdp_synproxy.c is a userspace control application that allows to
configure the following options in runtime: list of allowed ports, MSS,
window scale, TTL.

A selftest is added to prog_tests that leverages the above programs to
test the functionality of the new helpers.

Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20220615134847.3753567-5-maximmi@nvidia.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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This commit is contained in:

Maxim Mikityanskiy 2022-06-15 16:48:45 +03:00 • committed by Alexei Starovoitov

parent 33bf988504

commit fb5cd0ce70

5 changed files with 1330 additions and 1 deletions

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tools/testing/selftests/bpf/.gitignore vendored

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tools/testing/selftests/bpf/Makefile

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tools/testing/selftests/bpf/prog_tests/xdp_synproxy.c

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tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c

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tools/testing/selftests/bpf/xdp_synproxy.c

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