netdev - [PATCH bpf-next v3 3/3] bpf: libbpf: don't specify prog name if kernel doesn't support it

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Date:   Tue, 20 Nov 2018 17:11:21 -0800
From:   Stanislav Fomichev <sdf@...gle.com>
To:     netdev@...r.kernel.org, ast@...nel.org, daniel@...earbox.net
Cc:     Stanislav Fomichev <sdf@...gle.com>
Subject: [PATCH bpf-next v3 3/3] bpf: libbpf: don't specify prog name if
 kernel doesn't support it

Use recently added capability check.

See commit 23499442c319 ("bpf: libbpf: retry map creation without the
name") for rationale.

Signed-off-by: Stanislav Fomichev <sdf@...gle.com>
---
 tools/lib/bpf/libbpf.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index bf45f285d0a0..a080aeff7e2e 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -1439,7 +1439,8 @@ load_program(struct bpf_program *prog, struct bpf_insn *insns, int insns_cnt,
 	memset(&load_attr, 0, sizeof(struct bpf_load_program_attr));
 	load_attr.prog_type = prog->type;
 	load_attr.expected_attach_type = prog->expected_attach_type;
-	load_attr.name = prog->name;
+	if (prog->caps->name)
+		load_attr.name = prog->name;
 	load_attr.insns = insns;
 	load_attr.insns_cnt = insns_cnt;
 	load_attr.license = license;
-- 
2.19.1.1215.g8438c0b245-goog