netdev - [PATCH bpf-next 2/2] bpftool: Do not check return value from libbpf_set_strict

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Date:   Fri, 10 Jun 2022 12:26:48 +0100
From:   Quentin Monnet <quentin@...valent.com>
To:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>
Cc:     Yafang Shao <laoar.shao@...il.com>,
        Harsh Modi <harshmodi@...gle.com>,
        Paul Chaignon <paul@...ium.io>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, Quentin Monnet <quentin@...valent.com>
Subject: [PATCH bpf-next 2/2] bpftool: Do not check return value from libbpf_set_strict_mode()

The function always returns 0, so we don't need to check whether the
return value is 0 or not.

This change was first introduced in commit a777e18f1bcd ("bpftool: Use
libbpf 1.0 API mode instead of RLIMIT_MEMLOCK"), but later reverted to
restore the unconditional rlimit bump in bpftool. Let's re-add it.

Co-developed-by: Yafang Shao <laoar.shao@...il.com>
Signed-off-by: Quentin Monnet <quentin@...valent.com>
---
 tools/bpf/bpftool/main.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/tools/bpf/bpftool/main.c b/tools/bpf/bpftool/main.c
index e81227761f5d..451cefc2d0da 100644
--- a/tools/bpf/bpftool/main.c
+++ b/tools/bpf/bpftool/main.c
@@ -507,9 +507,7 @@ int main(int argc, char **argv)
 		 * It will still be rejected if users use LIBBPF_STRICT_ALL
 		 * mode for loading generated skeleton.
 		 */
-		ret = libbpf_set_strict_mode(LIBBPF_STRICT_ALL & ~LIBBPF_STRICT_MAP_DEFINITIONS);
-		if (ret)
-			p_err("failed to enable libbpf strict mode: %d", ret);
+		libbpf_set_strict_mode(LIBBPF_STRICT_ALL & ~LIBBPF_STRICT_MAP_DEFINITIONS);
 	}
 
 	argc -= optind;
-- 
2.34.1