linux-kernel - [PATCH bpf-next 7/9] bpf, net: dummy

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Message-Id: <20241127-bpf-const-ops-v1-7-a698b8d58680@weissschuh.net>
Date: Wed, 27 Nov 2024 20:15:26 +0100
From: Thomas Weißschuh <linux@...ssschuh.net>
To: "David S. Miller" <davem@...emloft.net>, 
 David Ahern <dsahern@...nel.org>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Simon Horman <horms@...nel.org>, Martin KaFai Lau <martin.lau@...nel.org>, 
 Kui-Feng Lee <thinker.li@...il.com>, Alexei Starovoitov <ast@...nel.org>, 
 Daniel Borkmann <daniel@...earbox.net>, 
 John Fastabend <john.fastabend@...il.com>, 
 Andrii Nakryiko <andrii@...nel.org>, 
 Martin KaFai Lau <martin.lau@...ux.dev>, 
 Eduard Zingerman <eddyz87@...il.com>, Song Liu <song@...nel.org>, 
 Yonghong Song <yonghong.song@...ux.dev>, KP Singh <kpsingh@...nel.org>, 
 Stanislav Fomichev <sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>, 
 Jiri Olsa <jolsa@...nel.org>, Jiri Kosina <jikos@...nel.org>, 
 Benjamin Tissoires <bentiss@...nel.org>, Tejun Heo <tj@...nel.org>, 
 David Vernet <void@...ifault.com>, Ingo Molnar <mingo@...hat.com>, 
 Peter Zijlstra <peterz@...radead.org>, Juri Lelli <juri.lelli@...hat.com>, 
 Vincent Guittot <vincent.guittot@...aro.org>, 
 Dietmar Eggemann <dietmar.eggemann@....com>, 
 Steven Rostedt <rostedt@...dmis.org>, Ben Segall <bsegall@...gle.com>, 
 Mel Gorman <mgorman@...e.de>, Valentin Schneider <vschneid@...hat.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, 
 bpf@...r.kernel.org, linux-input@...r.kernel.org, 
 Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH bpf-next 7/9] bpf, net: dummy_ops: Constify BPF ops

The BPF core now allows the registration of read-only ops tables,
make use of it.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 net/bpf/bpf_dummy_struct_ops.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/bpf/bpf_dummy_struct_ops.c b/net/bpf/bpf_dummy_struct_ops.c
index 3a675227074e546e6a02e80db3841ed72d5bbff8..b0f3d90f153b34d46fbf37964cc3caf4bec9a4af 100644
--- a/net/bpf/bpf_dummy_struct_ops.c
+++ b/net/bpf/bpf_dummy_struct_ops.c
@@ -7,7 +7,7 @@
 #include <linux/bpf.h>
 #include <linux/btf.h>

-static struct bpf_struct_ops bpf_bpf_dummy_ops;
+static const struct bpf_struct_ops bpf_bpf_dummy_ops;

 /* A common type for test_N with return value in bpf_dummy_ops */
 typedef int (*dummy_ops_test_ret_fn)(struct bpf_dummy_ops_state *state, ...);
@@ -297,13 +297,13 @@ static int bpf_dummy_test_sleepable(struct bpf_dummy_ops_state *cb)
 	return 0;
 }

-static struct bpf_dummy_ops __bpf_bpf_dummy_ops = {
+static const struct bpf_dummy_ops __bpf_bpf_dummy_ops = {
 	.test_1 = bpf_dummy_ops__test_1,
 	.test_2 = bpf_dummy_test_2,
 	.test_sleepable = bpf_dummy_test_sleepable,
 };

-static struct bpf_struct_ops bpf_bpf_dummy_ops = {
+static const struct bpf_struct_ops bpf_bpf_dummy_ops = {
 	.verifier_ops = &bpf_dummy_verifier_ops,
 	.init = bpf_dummy_init,
 	.check_member = bpf_dummy_ops_check_member,

-- 
2.47.1