libbpf: Add "tc" SEC_DEF which is a better name for "classifier"

As argued in [0], add "tc" ELF section definition for SCHED_CLS BPF
program type. "classifier" is a misleading terminology and should be
migrated away from.

  [0] https://lore.kernel.org/bpf/270e27b1-e5be-5b1c-b343-51bd644d0747@iogearbox.net/

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210928161946.2512801-2-andrii@kernel.org

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 453148f..0bcd0a4 100644 (file)
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -7968,6 +7968,7 @@ static const struct bpf_sec_def section_defs[] = {
                .attach_fn = attach_kprobe),
        BPF_PROG_SEC("uretprobe/",              BPF_PROG_TYPE_KPROBE),
        BPF_PROG_SEC("classifier",              BPF_PROG_TYPE_SCHED_CLS),
+       BPF_PROG_SEC("tc",                      BPF_PROG_TYPE_SCHED_CLS),
        BPF_PROG_SEC("action",                  BPF_PROG_TYPE_SCHED_ACT),
        SEC_DEF("tracepoint/", TRACEPOINT,
                .attach_fn = attach_tp),