From: Xu Kuohai xukuohai@huawei.com
[ Upstream commit 4abdb1d5b250df4b5b3afd394d5e2fa516064c04 ]
test_xdp_adjust_tail_grow failed with ipv6: test_xdp_adjust_tail_grow:FAIL:ipv6 unexpected error: -28 (errno 28)
The reason is that this test case tests ipv4 before ipv6, and when ipv4 test finished, topts.data_size_out was set to 54, which is smaller than the ipv6 output data size 114, so ipv6 test fails with NOSPC error.
Fix it by reset topts.data_size_out to sizeof(buf) before testing ipv6.
Fixes: 04fcb5f9a104 ("selftests/bpf: Migrate from bpf_prog_test_run") Signed-off-by: Xu Kuohai xukuohai@huawei.com Signed-off-by: Andrii Nakryiko andrii@kernel.org Acked-by: Martin KaFai Lau martin.lau@kernel.org Link: https://lore.kernel.org/bpf/20221011120108.782373-6-xukuohai@huaweicloud.com Signed-off-by: Sasha Levin sashal@kernel.org --- tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c b/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c index 21ceac24e174..7efee9b047d9 100644 --- a/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c +++ b/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c @@ -63,6 +63,7 @@ static void test_xdp_adjust_tail_grow(void) expect_sz = sizeof(pkt_v6) + 40; /* Test grow with 40 bytes */ topts.data_in = &pkt_v6; topts.data_size_in = sizeof(pkt_v6); + topts.data_size_out = sizeof(buf); err = bpf_prog_test_run_opts(prog_fd, &topts); ASSERT_OK(err, "ipv6"); ASSERT_EQ(topts.retval, XDP_TX, "ipv6 retval");