From: Martin KaFai Lau <kafai@fb.com>
To: <bpf@vger.kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
David Miller <davem@davemloft.net>, <kernel-team@fb.com>,
<netdev@vger.kernel.org>
Subject: [PATCH bpf-next v2 03/11] bpf: Add enum support to btf_ctx_access()
Date: Fri, 20 Dec 2019 22:26:02 -0800 [thread overview]
Message-ID: <20191221062602.1182627-1-kafai@fb.com> (raw)
In-Reply-To: <20191221062556.1182261-1-kafai@fb.com>
It allows bpf prog (e.g. tracing) to attach
to a kernel function that takes enum argument.
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
---
kernel/bpf/btf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 88359a4bccb0..6e652643849b 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -3676,7 +3676,7 @@ bool btf_ctx_access(int off, int size, enum bpf_access_type type,
/* skip modifiers */
while (btf_type_is_modifier(t))
t = btf_type_by_id(btf, t->type);
- if (btf_type_is_int(t))
+ if (btf_type_is_int(t) || btf_type_is_enum(t))
/* accessing a scalar */
return true;
if (!btf_type_is_ptr(t)) {
--
2.17.1
next prev parent reply other threads:[~2019-12-21 6:26 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-21 6:25 [PATCH bpf-next v2 00/11] Introduce BPF STRUCT_OPS Martin KaFai Lau
2019-12-21 6:25 ` [PATCH bpf-next v2 01/11] bpf: Save PTR_TO_BTF_ID register state when spilling to stack Martin KaFai Lau
2019-12-21 6:25 ` [PATCH bpf-next v2 02/11] bpf: Avoid storing modifier to info->btf_id Martin KaFai Lau
2019-12-21 6:26 ` Martin KaFai Lau [this message]
2019-12-21 6:26 ` [PATCH bpf-next v2 04/11] bpf: Support bitfield read access in btf_struct_access Martin KaFai Lau
2019-12-23 7:49 ` Yonghong Song
2019-12-23 20:05 ` Andrii Nakryiko
2019-12-23 21:21 ` Yonghong Song
2019-12-21 6:26 ` [PATCH bpf-next v2 05/11] bpf: Introduce BPF_PROG_TYPE_STRUCT_OPS Martin KaFai Lau
2019-12-23 19:33 ` Yonghong Song
2019-12-23 20:29 ` Andrii Nakryiko
2019-12-23 22:29 ` Martin Lau
2019-12-23 22:55 ` Andrii Nakryiko
2019-12-24 11:46 ` kbuild test robot
2019-12-21 6:26 ` [PATCH bpf-next v2 06/11] bpf: Introduce BPF_MAP_TYPE_STRUCT_OPS Martin KaFai Lau
2019-12-23 19:57 ` Yonghong Song
2019-12-23 21:44 ` Andrii Nakryiko
2019-12-23 22:15 ` Martin Lau
2019-12-27 6:16 ` Martin Lau
2019-12-23 23:05 ` Andrii Nakryiko
2019-12-28 1:47 ` Martin Lau
2019-12-28 2:24 ` Andrii Nakryiko
2019-12-28 5:16 ` Martin Lau
2019-12-24 12:28 ` kbuild test robot
2019-12-21 6:26 ` [PATCH bpf-next v2 07/11] bpf: tcp: Support tcp_congestion_ops in bpf Martin KaFai Lau
2019-12-23 20:18 ` Yonghong Song
2019-12-23 23:20 ` Andrii Nakryiko
2019-12-24 7:16 ` kbuild test robot
2019-12-24 13:06 ` kbuild test robot
2019-12-21 6:26 ` [PATCH bpf-next v2 08/11] bpf: Add BPF_FUNC_tcp_send_ack helper Martin KaFai Lau
2019-12-21 6:26 ` [PATCH bpf-next v2 09/11] bpf: Synch uapi bpf.h to tools/ Martin KaFai Lau
2019-12-21 6:26 ` [PATCH bpf-next v2 10/11] bpf: libbpf: Add STRUCT_OPS support Martin KaFai Lau
2019-12-23 19:54 ` Andrii Nakryiko
2019-12-26 22:47 ` Martin Lau
2019-12-21 6:26 ` [PATCH bpf-next v2 11/11] bpf: Add bpf_dctcp example Martin KaFai Lau
2019-12-23 23:26 ` Andrii Nakryiko
2019-12-24 1:31 ` Martin Lau
2019-12-24 7:01 ` Andrii Nakryiko
2019-12-24 7:32 ` Martin Lau
2019-12-24 16:50 ` Martin Lau
2019-12-26 19:02 ` Andrii Nakryiko
2019-12-26 20:25 ` Martin Lau
2019-12-26 20:48 ` Andrii Nakryiko
2019-12-26 22:20 ` Martin Lau
2019-12-26 22:25 ` Andrii Nakryiko
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