diff options
| author | Jörn-Thorben Hinz <jthinz@mailbox.tu-berlin.de> | 2022-06-22 21:12:26 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-06-23 09:49:57 -0700 |
| commit | 0735627d78caa56f219dc14608ce0bdbd045e07e (patch) | |
| tree | db73228f689f24814d6955f295e150e0ce1e2213 /tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c | |
| parent | 6e945d57cc9f6e27893d57a419434a2859ba6f3f (diff) | |
selftests/bpf: Test an incomplete BPF CC
Test whether a TCP CC implemented in BPF providing neither cong_avoid()
nor cong_control() is correctly rejected. This check solely depends on
tcp_register_congestion_control() now, which is invoked during
bpf_map__attach_struct_ops().
Signed-off-by: Jörn-Thorben Hinz <jthinz@mailbox.tu-berlin.de>
Link: https://lore.kernel.org/r/20220622191227.898118-5-jthinz@mailbox.tu-berlin.de
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c b/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c index e79f3f5a9d33..194d07310531 100644 --- a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c +++ b/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c @@ -10,6 +10,7 @@ #include "bpf_tcp_nogpl.skel.h" #include "bpf_dctcp_release.skel.h" #include "tcp_ca_write_sk_pacing.skel.h" +#include "tcp_ca_incompl_cong_ops.skel.h" #ifndef ENOTSUPP #define ENOTSUPP 524 @@ -339,6 +340,25 @@ static void test_write_sk_pacing(void) tcp_ca_write_sk_pacing__destroy(skel); } +static void test_incompl_cong_ops(void) +{ + struct tcp_ca_incompl_cong_ops *skel; + struct bpf_link *link; + + skel = tcp_ca_incompl_cong_ops__open_and_load(); + if (!ASSERT_OK_PTR(skel, "open_and_load")) + return; + + /* That cong_avoid() and cong_control() are missing is only reported at + * this point: + */ + link = bpf_map__attach_struct_ops(skel->maps.incompl_cong_ops); + ASSERT_ERR_PTR(link, "attach_struct_ops"); + + bpf_link__destroy(link); + tcp_ca_incompl_cong_ops__destroy(skel); +} + void test_bpf_tcp_ca(void) { if (test__start_subtest("dctcp")) @@ -353,4 +373,6 @@ void test_bpf_tcp_ca(void) test_rel_setsockopt(); if (test__start_subtest("write_sk_pacing")) test_write_sk_pacing(); + if (test__start_subtest("incompl_cong_ops")) + test_incompl_cong_ops(); } |