selftests/bpf: extend sockopt_sk selftest with TCP_CONGESTION use case

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Ignore SOL_TCP:TCP_CONGESTION in getsockopt and always override
SOL_TCP:TCP_CONGESTION with "cubic" in setsockopt hook.

Call setsockopt(SOL_TCP, TCP_CONGESTION) with short optval ("nv")
to make sure BPF program has enough buffer space to replace it
with "cubic".

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Stanislav Fomichev 2019-07-29 14:51:11 -07:00 • committed by Alexei Starovoitov

parent 9babe825da

commit fd5ef31f37

2 changed files with 47 additions and 0 deletions

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22

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

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25

tools/testing/selftests/bpf/test_sockopt_sk.c

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