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From: thinker.li@gmail.com
To: bpf@vger.kernel.org, ast@kernel.org, martin.lau@linux.dev,
	song@kernel.org, kernel-team@meta.com, andrii@kernel.org,
	drosen@google.com
Cc: sinquersw@gmail.com, kuifeng@meta.com,
	Kui-Feng Lee <thinker.li@gmail.com>
Subject: [PATCH bpf-next v5 8/9] bpf: export btf_ctx_access to modules.
Date: Tue, 17 Oct 2023 09:23:05 -0700	[thread overview]
Message-ID: <20231017162306.176586-9-thinker.li@gmail.com> (raw)
In-Reply-To: <20231017162306.176586-1-thinker.li@gmail.com>

From: Kui-Feng Lee <thinker.li@gmail.com>

The module requires the use of btf_ctx_access() to invoke
bpf_tracing_btf_ctx_access() from a module. This function is valuable for
implementing validation functions that ensure proper access to ctx.

Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com>
---
 kernel/bpf/btf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 990973d6057d..dc6d8fe9b63d 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -6141,6 +6141,7 @@ bool btf_ctx_access(int off, int size, enum bpf_access_type type,
 		__btf_name_by_offset(btf, t->name_off));
 	return true;
 }
+EXPORT_SYMBOL_GPL(btf_ctx_access);
 
 enum bpf_struct_walk_result {
 	/* < 0 error */
-- 
2.34.1


  parent reply	other threads:[~2023-10-17 16:23 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-10-17 16:22 [PATCH bpf-next v5 0/9] Registrating struct_ops types from modules thinker.li
2023-10-17 16:22 ` [PATCH bpf-next v5 1/9] bpf: refactory struct_ops type initialization to a function thinker.li
2023-10-17 16:22 ` [PATCH bpf-next v5 2/9] bpf: add struct_ops_tab to btf thinker.li
2023-10-19  0:00   ` Martin KaFai Lau
2023-10-19  0:33     ` Kui-Feng Lee
2023-10-19  2:28   ` Martin KaFai Lau
2023-10-19 16:15     ` Kui-Feng Lee
2023-10-17 16:23 ` [PATCH bpf-next v5 3/9] bpf: hold module for bpf_struct_ops_map thinker.li
2023-10-19  0:36   ` Martin KaFai Lau
2023-10-19 16:29     ` Kui-Feng Lee
2023-10-20  5:07       ` Kui-Feng Lee
2023-10-20 21:37         ` Martin KaFai Lau
2023-10-20 22:28           ` Kui-Feng Lee
2023-10-17 16:23 ` [PATCH bpf-next v5 4/9] bpf: validate value_type thinker.li
2023-10-17 16:23 ` [PATCH bpf-next v5 5/9] bpf: pass attached BTF to the bpf_struct_ops subsystem thinker.li
2023-10-17 16:23 ` [PATCH bpf-next v5 6/9] bpf, net: switch to dynamic registration thinker.li
2023-10-19  1:49   ` Martin KaFai Lau
2023-10-20 15:12     ` Kui-Feng Lee
2023-10-20 17:53       ` Kui-Feng Lee
2023-10-17 16:23 ` [PATCH bpf-next v5 7/9] libbpf: Find correct module BTFs for struct_ops maps and progs thinker.li
2023-10-17 21:49   ` Andrii Nakryiko
2023-10-18  2:25     ` Kui-Feng Lee
2023-10-19  2:43   ` Martin KaFai Lau
2023-10-19 16:31     ` Kui-Feng Lee
2023-10-17 16:23 ` thinker.li [this message]
2023-10-17 16:23 ` [PATCH bpf-next v5 9/9] selftests/bpf: test case for register_bpf_struct_ops() thinker.li
2023-10-17 18:03   ` kernel test robot

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