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selftests/bpf: Fix error checking on reading the tcp_fastopen sysctl 

There is a typo in checking the "saved_tcp_fo" and instead
"saved_tcp_syncookie" is checked again.  This patch fixes it
and also breaks them into separate if statements such that
the test will abort asap.

Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200211175910.3235321-1-kafai@fb.com
This commit is contained in:
Martin KaFai Lau 2020-02-11 09:59:10 -08:00 committed by Daniel Borkmann
parent 30744a6862
commit 2fe7710055
1 changed files with 3 additions and 1 deletions
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4
tools/testing/selftests/bpf/prog_tests/select_reuseport.c
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@ -822,8 +822,10 @@ void test_select_reuseport(void)
goto out;
saved_tcp_fo = read_int_sysctl(TCP_FO_SYSCTL);
if (saved_tcp_fo < 0)
goto out;
saved_tcp_syncookie = read_int_sysctl(TCP_SYNCOOKIE_SYSCTL);
if (saved_tcp_syncookie < 0 || saved_tcp_syncookie < 0)
if (saved_tcp_syncookie < 0)
goto out;
if (enable_fastopen())