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From: Pu Lehui <pulehui@huaweicloud.com>
To: Martin KaFai Lau <martin.lau@linux.dev>,
	Stanislav Fomichev <sdf@google.com>,
	bpf@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Andrii Nakryiko <andrii@kernel.org>,
	Quentin Monnet <quentin@isovalent.com>,
	Song Liu <song@kernel.org>, Yonghong Song <yhs@fb.com>,
	John Fastabend <john.fastabend@gmail.com>,
	KP Singh <kpsingh@kernel.org>, Hao Luo <haoluo@google.com>,
	Jiri Olsa <jolsa@kernel.org>, Pu Lehui <pulehui@huawei.com>,
	Pu Lehui <pulehui@huaweicloud.com>
Subject: [PATCH bpf v5 3/3] selftests/bpf: Adapt cgroup effective query uapi change
Date: Wed, 21 Sep 2022 10:46:04 +0000	[thread overview]
Message-ID: <20220921104604.2340580-4-pulehui@huaweicloud.com> (raw)
In-Reply-To: <20220921104604.2340580-1-pulehui@huaweicloud.com>

From: Pu Lehui <pulehui@huawei.com>

The attach flags is meaningless for effective query and
its value will always be set as 0 during effective query.
Root cg's effective progs is always its attached progs,
so we use non-effective query to get its progs count and
attach flags. And we don't need the remain attach flags
check.

Fixes: b79c9fc9551b ("bpf: implement BPF_PROG_QUERY for BPF_LSM_CGROUP")
Signed-off-by: Pu Lehui <pulehui@huawei.com>
---
 tools/testing/selftests/bpf/prog_tests/cgroup_link.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/tools/testing/selftests/bpf/prog_tests/cgroup_link.c b/tools/testing/selftests/bpf/prog_tests/cgroup_link.c
index 9e6e6aad347c..15093a69510e 100644
--- a/tools/testing/selftests/bpf/prog_tests/cgroup_link.c
+++ b/tools/testing/selftests/bpf/prog_tests/cgroup_link.c
@@ -71,10 +71,9 @@ void serial_test_cgroup_link(void)
 
 	ping_and_check(cg_nr, 0);
 
-	/* query the number of effective progs and attach flags in root cg */
+	/* query the number of attached progs and attach flags in root cg */
 	err = bpf_prog_query(cgs[0].fd, BPF_CGROUP_INET_EGRESS,
-			     BPF_F_QUERY_EFFECTIVE, &attach_flags, NULL,
-			     &prog_cnt);
+			     0, &attach_flags, NULL, &prog_cnt);
 	CHECK_FAIL(err);
 	CHECK_FAIL(attach_flags != BPF_F_ALLOW_MULTI);
 	if (CHECK(prog_cnt != 1, "effect_cnt", "exp %d, got %d\n", 1, prog_cnt))
@@ -85,17 +84,15 @@ void serial_test_cgroup_link(void)
 			     BPF_F_QUERY_EFFECTIVE, NULL, NULL,
 			     &prog_cnt);
 	CHECK_FAIL(err);
-	CHECK_FAIL(attach_flags != BPF_F_ALLOW_MULTI);
 	if (CHECK(prog_cnt != cg_nr, "effect_cnt", "exp %d, got %d\n",
 		  cg_nr, prog_cnt))
 		goto cleanup;
 
 	/* query the effective prog IDs in last cg */
 	err = bpf_prog_query(cgs[last_cg].fd, BPF_CGROUP_INET_EGRESS,
-			     BPF_F_QUERY_EFFECTIVE, &attach_flags,
-			     prog_ids, &prog_cnt);
+			     BPF_F_QUERY_EFFECTIVE, NULL, prog_ids,
+			     &prog_cnt);
 	CHECK_FAIL(err);
-	CHECK_FAIL(attach_flags != BPF_F_ALLOW_MULTI);
 	if (CHECK(prog_cnt != cg_nr, "effect_cnt", "exp %d, got %d\n",
 		  cg_nr, prog_cnt))
 		goto cleanup;
-- 
2.25.1


  parent reply	other threads:[~2022-09-21  2:44 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-21 10:46 [PATCH bpf v5 0/3] Fix wrong cgroup attach flags being assigned to effective progs Pu Lehui
2022-09-21 10:46 ` [PATCH bpf v5 1/3] bpf, cgroup: Reject prog_attach_flags array when effective query Pu Lehui
2022-09-21 10:46 ` [PATCH bpf v5 2/3] bpftool: Fix wrong cgroup attach flags being assigned to effective progs Pu Lehui
2022-09-21 10:46 ` Pu Lehui [this message]
2022-09-21 18:30 ` [PATCH bpf v5 0/3] " patchwork-bot+netdevbpf

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