From: Kumar Kartikeya Dwivedi <memxor@gmail.com>
To: bpf@vger.kernel.org
Cc: "Alexei Starovoitov" <ast@kernel.org>,
"Andrii Nakryiko" <andrii@kernel.org>,
"Daniel Borkmann" <daniel@iogearbox.net>,
"Joanne Koong" <joannelkoong@gmail.com>,
"Toke Høiland-Jørgensen" <toke@redhat.com>,
"Jesper Dangaard Brouer" <brouer@redhat.com>
Subject: [PATCH bpf-next v6 10/13] libbpf: Add kptr type tag macros to bpf_helpers.h
Date: Mon, 25 Apr 2022 03:18:58 +0530 [thread overview]
Message-ID: <20220424214901.2743946-11-memxor@gmail.com> (raw)
In-Reply-To: <20220424214901.2743946-1-memxor@gmail.com>
Include convenience definitions:
__kptr: Unreferenced kptr
__kptr_ref: Referenced kptr
Users can use them to tag the pointer type meant to be used with the new
support directly in the map value definition.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
---
tools/lib/bpf/bpf_helpers.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/tools/lib/bpf/bpf_helpers.h b/tools/lib/bpf/bpf_helpers.h
index 44df982d2a5c..5de3eb267125 100644
--- a/tools/lib/bpf/bpf_helpers.h
+++ b/tools/lib/bpf/bpf_helpers.h
@@ -149,6 +149,13 @@ enum libbpf_tristate {
#define __kconfig __attribute__((section(".kconfig")))
#define __ksym __attribute__((section(".ksyms")))
+#if __has_attribute(btf_type_tag)
+#define __kptr __attribute__((btf_type_tag("kptr")))
+#define __kptr_ref __attribute__((btf_type_tag("kptr_ref")))
+#else
+#define __kptr
+#define __kptr_ref
+#endif
#ifndef ___bpf_concat
#define ___bpf_concat(a, b) a ## b
--
2.35.1
next prev parent reply other threads:[~2022-04-24 21:49 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-24 21:48 [PATCH bpf-next v6 00/13] Introduce typed pointer support in BPF maps Kumar Kartikeya Dwivedi
2022-04-24 21:48 ` [PATCH bpf-next v6 01/13] bpf: Allow storing unreferenced kptr in map Kumar Kartikeya Dwivedi
2022-04-24 21:48 ` [PATCH bpf-next v6 02/13] bpf: Tag argument to be released in bpf_func_proto Kumar Kartikeya Dwivedi
2022-04-24 21:48 ` [PATCH bpf-next v6 03/13] bpf: Allow storing referenced kptr in map Kumar Kartikeya Dwivedi
2022-04-26 3:30 ` Alexei Starovoitov
2022-04-24 21:48 ` [PATCH bpf-next v6 04/13] bpf: Prevent escaping of kptr loaded from maps Kumar Kartikeya Dwivedi
2022-04-24 21:48 ` [PATCH bpf-next v6 05/13] bpf: Adapt copy_map_value for multiple offset case Kumar Kartikeya Dwivedi
2022-04-24 21:48 ` [PATCH bpf-next v6 06/13] bpf: Populate pairs of btf_id and destructor kfunc in btf Kumar Kartikeya Dwivedi
2022-04-24 21:48 ` [PATCH bpf-next v6 07/13] bpf: Wire up freeing of referenced kptr Kumar Kartikeya Dwivedi
2022-04-24 21:48 ` [PATCH bpf-next v6 08/13] bpf: Teach verifier about kptr_get kfunc helpers Kumar Kartikeya Dwivedi
2022-04-24 21:48 ` [PATCH bpf-next v6 09/13] bpf: Make BTF type match stricter for release arguments Kumar Kartikeya Dwivedi
2022-04-24 21:48 ` Kumar Kartikeya Dwivedi [this message]
2022-04-24 21:48 ` [PATCH bpf-next v6 11/13] selftests/bpf: Add C tests for kptr Kumar Kartikeya Dwivedi
2022-04-24 21:49 ` [PATCH bpf-next v6 12/13] selftests/bpf: Add verifier " Kumar Kartikeya Dwivedi
2022-04-26 3:35 ` Alexei Starovoitov
2022-05-09 20:03 ` Kumar Kartikeya Dwivedi
2022-04-24 21:49 ` [PATCH bpf-next v6 13/13] selftests/bpf: Add test for strict BTF type check Kumar Kartikeya Dwivedi
2022-04-26 3:39 ` Alexei Starovoitov
2022-05-08 21:59 ` Alexei Starovoitov
2022-05-09 19:49 ` Kumar Kartikeya Dwivedi
2022-04-26 3:30 ` [PATCH bpf-next v6 00/13] Introduce typed pointer support in BPF maps patchwork-bot+netdevbpf
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