[PATCH bpf-next v3 4/4] selftests/bpf: Check for flag presence in bpf_program__flags()
From: Toke Høiland-Jørgensen <hidden>
Date: 2026-09-01 08:47:14
Also in:
bpf
Subsystem:
bpf [general] (safe dynamic programs and tools), bpf [selftests] (test runners & infrastructure), kernel selftest framework, the rest, xdp (express data path) · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Shuah Khan, Shuah Khan, Linus Torvalds, David S. Miller, Jakub Kicinski, Jesper Dangaard Brouer, John Fastabend
Add a check that the BPF_F_XDP_HAS_FRAGS and BPF_F_SLEEPABLE flags show up in bpf_program__flags() when opening a BPF program with the flag definitions in their section definitions. Signed-off-by: Toke Høiland-Jørgensen <redacted> --- tools/testing/selftests/bpf/prog_tests/kernel_flag.c | 3 +++ tools/testing/selftests/bpf/prog_tests/xdp_adjust_frags.c | 3 +++ tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c | 5 +++++ 3 files changed, 11 insertions(+)
diff --git a/tools/testing/selftests/bpf/prog_tests/kernel_flag.c b/tools/testing/selftests/bpf/prog_tests/kernel_flag.c
index 97b00c7efe94..25eb59f460ab 100644
--- a/tools/testing/selftests/bpf/prog_tests/kernel_flag.c
+++ b/tools/testing/selftests/bpf/prog_tests/kernel_flag.c@@ -16,6 +16,9 @@ void test_kernel_flag(void) if (!ASSERT_OK_PTR(lsm_skel, "lsm_skel")) return; + ASSERT_EQ(bpf_program__flags(lsm_skel->progs.bpf) & BPF_F_SLEEPABLE, + BPF_F_SLEEPABLE, "sleepable in program flags"); + lsm_skel->bss->monitored_tid = sys_gettid(); ret = test_kernel_flag__attach(lsm_skel);
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_adjust_frags.c b/tools/testing/selftests/bpf/prog_tests/xdp_adjust_frags.c
index fce203640f8c..a894b1ab46f4 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_adjust_frags.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_adjust_frags.c@@ -18,6 +18,9 @@ static void test_xdp_update_frags(void) return; prog = bpf_object__next_program(obj, NULL); + ASSERT_EQ(bpf_program__flags(prog) & BPF_F_XDP_HAS_FRAGS, + BPF_F_XDP_HAS_FRAGS, "frags in program flags"); + if (bpf_object__load(obj)) return;
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c b/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c
index a8ab05216c38..dff6b3e7266e 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c@@ -146,6 +146,11 @@ static void test_xdp_with_devmap_frags_helpers(void) if (!ASSERT_OK_PTR(skel, "test_xdp_with_devmap_helpers__open_and_load")) return; + ASSERT_EQ(bpf_program__flags(skel->progs.xdp_dummy_dm_frags) & BPF_F_XDP_HAS_FRAGS, + BPF_F_XDP_HAS_FRAGS, "frags in program flags"); + ASSERT_EQ(bpf_program__flags(skel->progs.xdp_dummy_dm) & BPF_F_XDP_HAS_FRAGS, + 0, "frags not in program flags"); + dm_fd_frags = bpf_program__fd(skel->progs.xdp_dummy_dm_frags); map_fd = bpf_map__fd(skel->maps.dm_ports); err = bpf_prog_get_info_by_fd(dm_fd_frags, &info, &len);
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2.55.0