linux-kernel - [PATCH bpf-next] bpf, test_run: Remove unnecessary prog type checks

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Date:   Sun, 29 May 2022 15:15:41 -0500
From:   Daniel Xu <dxu@...uu.xyz>
To:     bpf@...r.kernel.org, ast@...nel.org, daniel@...earbox.net,
        andrii@...nel.org
Cc:     Daniel Xu <dxu@...uu.xyz>, linux-kernel@...r.kernel.org
Subject: [PATCH bpf-next] bpf, test_run: Remove unnecessary prog type checks

These checks were effectively noops b/c there's only one way these
functions get called: through prog_ops dispatching. And since there's no
other callers, we can be sure that `prog` is always the correct type.

Signed-off-by: Daniel Xu <dxu@...uu.xyz>
---
 net/bpf/test_run.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c
index 56f059b3c242..2ca96acbc50a 100644
--- a/net/bpf/test_run.c
+++ b/net/bpf/test_run.c
@@ -1420,9 +1420,6 @@ int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog,
 	void *data;
 	int ret;
 
-	if (prog->type != BPF_PROG_TYPE_FLOW_DISSECTOR)
-		return -EINVAL;
-
 	if (kattr->test.flags || kattr->test.cpu || kattr->test.batch_size)
 		return -EINVAL;
 
@@ -1487,9 +1484,6 @@ int bpf_prog_test_run_sk_lookup(struct bpf_prog *prog, const union bpf_attr *kat
 	u32 retval, duration;
 	int ret = -EINVAL;
 
-	if (prog->type != BPF_PROG_TYPE_SK_LOOKUP)
-		return -EINVAL;
-
 	if (kattr->test.flags || kattr->test.cpu || kattr->test.batch_size)
 		return -EINVAL;
 
-- 
2.36.1