netdev - [PATCH bpf-next v3 3/4] selftests/bpf: don't mask result of bpf_csum_diff() in test

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Message-Id: <20241026125339.26459-4-puranjay@kernel.org>
Date: Sat, 26 Oct 2024 12:53:38 +0000
From: Puranjay Mohan <puranjay@...nel.org>
To: Albert Ou <aou@...s.berkeley.edu>,
	Alexei Starovoitov <ast@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andrii Nakryiko <andrii@...nel.org>,
	bpf@...r.kernel.org,
	Daniel Borkmann <daniel@...earbox.net>,
	"David S. Miller" <davem@...emloft.net>,
	Eduard Zingerman <eddyz87@...il.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Hao Luo <haoluo@...gle.com>,
	Helge Deller <deller@....de>,
	Jakub Kicinski <kuba@...nel.org>,
	"James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
	Jiri Olsa <jolsa@...nel.org>,
	John Fastabend <john.fastabend@...il.com>,
	KP Singh <kpsingh@...nel.org>,
	linux-kernel@...r.kernel.org,
	linux-parisc@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	Martin KaFai Lau <martin.lau@...ux.dev>,
	Mykola Lysenko <mykolal@...com>,
	netdev@...r.kernel.org,
	Palmer Dabbelt <palmer@...belt.com>,
	Paolo Abeni <pabeni@...hat.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Puranjay Mohan <puranjay12@...il.com>,
	Puranjay Mohan <puranjay@...nel.org>,
	Shuah Khan <shuah@...nel.org>,
	Song Liu <song@...nel.org>,
	Stanislav Fomichev <sdf@...ichev.me>,
	Yonghong Song <yonghong.song@...ux.dev>
Subject: [PATCH bpf-next v3 3/4] selftests/bpf: don't mask result of bpf_csum_diff() in test_verifier

The bpf_csum_diff() helper has been fixed to return a 16-bit value for
all archs, so now we don't need to mask the result.

This commit is basically reverting the below:

commit 6185266c5a85 ("selftests/bpf: Mask bpf_csum_diff() return value
to 16 bits in test_verifier")

Signed-off-by: Puranjay Mohan <puranjay@...nel.org>
Acked-by: Daniel Borkmann <daniel@...earbox.net>
Reviewed-by: Toke Høiland-Jørgensen <toke@...hat.com>
---
 tools/testing/selftests/bpf/progs/verifier_array_access.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tools/testing/selftests/bpf/progs/verifier_array_access.c b/tools/testing/selftests/bpf/progs/verifier_array_access.c
index 95d7ecc12963b..4195aa824ba55 100644
--- a/tools/testing/selftests/bpf/progs/verifier_array_access.c
+++ b/tools/testing/selftests/bpf/progs/verifier_array_access.c
@@ -368,8 +368,7 @@ __naked void a_read_only_array_2_1(void)
 	r4 = 0;						\
 	r5 = 0;						\
 	call %[bpf_csum_diff];				\
-l0_%=:	r0 &= 0xffff;					\
-	exit;						\
+l0_%=:	exit;						\
 "	:
 	: __imm(bpf_csum_diff),
 	  __imm(bpf_map_lookup_elem),
-- 
2.40.1