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Date: Fri, 26 Apr 2019 16:39:46 -0700
From: Martin KaFai Lau <kafai@...com>
To: <bpf@...r.kernel.org>, <netdev@...r.kernel.org>
CC: Alexei Starovoitov <ast@...com>, Andrii Nakryiko <andriin@...com>,
Daniel Borkmann <daniel@...earbox.net>,
John Fastabend <john.fastabend@...il.com>,
<kernel-team@...com>, Stanislav Fomichev <sdf@...ichev.me>,
Yonghong Song <yhs@...com>
Subject: [PATCH v4 bpf-next 4/7] bpf: Refactor BTF encoding macro to test_btf.h
Refactor common BTF encoding macros for other tests to use.
The libbpf may reuse some of them in the future which requires
some more thoughts before publishing as a libbpf API.
Signed-off-by: Martin KaFai Lau <kafai@...com>
---
tools/testing/selftests/bpf/test_btf.c | 63 +----------------------
tools/testing/selftests/bpf/test_btf.h | 69 ++++++++++++++++++++++++++
2 files changed, 70 insertions(+), 62 deletions(-)
create mode 100644 tools/testing/selftests/bpf/test_btf.h
diff --git a/tools/testing/selftests/bpf/test_btf.c b/tools/testing/selftests/bpf/test_btf.c
index f8eb7987b794..42c1ce988945 100644
--- a/tools/testing/selftests/bpf/test_btf.c
+++ b/tools/testing/selftests/bpf/test_btf.c
@@ -24,6 +24,7 @@
#include "bpf_rlimit.h"
#include "bpf_util.h"
+#include "test_btf.h"
#define MAX_INSNS 512
#define MAX_SUBPROGS 16
@@ -58,68 +59,6 @@ static int __base_pr(enum libbpf_print_level level __attribute__((unused)),
return vfprintf(stderr, format, args);
}
-#define BTF_INFO_ENC(kind, kind_flag, vlen) \
- ((!!(kind_flag) << 31) | ((kind) << 24) | ((vlen) & BTF_MAX_VLEN))
-
-#define BTF_TYPE_ENC(name, info, size_or_type) \
- (name), (info), (size_or_type)
-
-#define BTF_INT_ENC(encoding, bits_offset, nr_bits) \
- ((encoding) << 24 | (bits_offset) << 16 | (nr_bits))
-#define BTF_TYPE_INT_ENC(name, encoding, bits_offset, bits, sz) \
- BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_INT, 0, 0), sz), \
- BTF_INT_ENC(encoding, bits_offset, bits)
-
-#define BTF_FWD_ENC(name, kind_flag) \
- BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FWD, kind_flag, 0), 0)
-
-#define BTF_ARRAY_ENC(type, index_type, nr_elems) \
- (type), (index_type), (nr_elems)
-#define BTF_TYPE_ARRAY_ENC(type, index_type, nr_elems) \
- BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ARRAY, 0, 0), 0), \
- BTF_ARRAY_ENC(type, index_type, nr_elems)
-
-#define BTF_STRUCT_ENC(name, nr_elems, sz) \
- BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, nr_elems), sz)
-
-#define BTF_UNION_ENC(name, nr_elems, sz) \
- BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_UNION, 0, nr_elems), sz)
-
-#define BTF_VAR_ENC(name, type, linkage) \
- BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_VAR, 0, 0), type), (linkage)
-#define BTF_VAR_SECINFO_ENC(type, offset, size) \
- (type), (offset), (size)
-
-#define BTF_MEMBER_ENC(name, type, bits_offset) \
- (name), (type), (bits_offset)
-#define BTF_ENUM_ENC(name, val) (name), (val)
-#define BTF_MEMBER_OFFSET(bitfield_size, bits_offset) \
- ((bitfield_size) << 24 | (bits_offset))
-
-#define BTF_TYPEDEF_ENC(name, type) \
- BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_TYPEDEF, 0, 0), type)
-
-#define BTF_PTR_ENC(type) \
- BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), type)
-
-#define BTF_CONST_ENC(type) \
- BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), type)
-
-#define BTF_VOLATILE_ENC(type) \
- BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_VOLATILE, 0, 0), type)
-
-#define BTF_RESTRICT_ENC(type) \
- BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_RESTRICT, 0, 0), type)
-
-#define BTF_FUNC_PROTO_ENC(ret_type, nargs) \
- BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_FUNC_PROTO, 0, nargs), ret_type)
-
-#define BTF_FUNC_PROTO_ARG_ENC(name, type) \
- (name), (type)
-
-#define BTF_FUNC_ENC(name, func_proto) \
- BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FUNC, 0, 0), func_proto)
-
#define BTF_END_RAW 0xdeadbeef
#define NAME_TBD 0xdeadb33f
diff --git a/tools/testing/selftests/bpf/test_btf.h b/tools/testing/selftests/bpf/test_btf.h
new file mode 100644
index 000000000000..2023725f1962
--- /dev/null
+++ b/tools/testing/selftests/bpf/test_btf.h
@@ -0,0 +1,69 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2019 Facebook */
+
+#ifndef _TEST_BTF_H
+#define _TEST_BTF_H
+
+#define BTF_INFO_ENC(kind, kind_flag, vlen) \
+ ((!!(kind_flag) << 31) | ((kind) << 24) | ((vlen) & BTF_MAX_VLEN))
+
+#define BTF_TYPE_ENC(name, info, size_or_type) \
+ (name), (info), (size_or_type)
+
+#define BTF_INT_ENC(encoding, bits_offset, nr_bits) \
+ ((encoding) << 24 | (bits_offset) << 16 | (nr_bits))
+#define BTF_TYPE_INT_ENC(name, encoding, bits_offset, bits, sz) \
+ BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_INT, 0, 0), sz), \
+ BTF_INT_ENC(encoding, bits_offset, bits)
+
+#define BTF_FWD_ENC(name, kind_flag) \
+ BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FWD, kind_flag, 0), 0)
+
+#define BTF_ARRAY_ENC(type, index_type, nr_elems) \
+ (type), (index_type), (nr_elems)
+#define BTF_TYPE_ARRAY_ENC(type, index_type, nr_elems) \
+ BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ARRAY, 0, 0), 0), \
+ BTF_ARRAY_ENC(type, index_type, nr_elems)
+
+#define BTF_STRUCT_ENC(name, nr_elems, sz) \
+ BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, nr_elems), sz)
+
+#define BTF_UNION_ENC(name, nr_elems, sz) \
+ BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_UNION, 0, nr_elems), sz)
+
+#define BTF_VAR_ENC(name, type, linkage) \
+ BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_VAR, 0, 0), type), (linkage)
+#define BTF_VAR_SECINFO_ENC(type, offset, size) \
+ (type), (offset), (size)
+
+#define BTF_MEMBER_ENC(name, type, bits_offset) \
+ (name), (type), (bits_offset)
+#define BTF_ENUM_ENC(name, val) (name), (val)
+#define BTF_MEMBER_OFFSET(bitfield_size, bits_offset) \
+ ((bitfield_size) << 24 | (bits_offset))
+
+#define BTF_TYPEDEF_ENC(name, type) \
+ BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_TYPEDEF, 0, 0), type)
+
+#define BTF_PTR_ENC(type) \
+ BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), type)
+
+#define BTF_CONST_ENC(type) \
+ BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), type)
+
+#define BTF_VOLATILE_ENC(type) \
+ BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_VOLATILE, 0, 0), type)
+
+#define BTF_RESTRICT_ENC(type) \
+ BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_RESTRICT, 0, 0), type)
+
+#define BTF_FUNC_PROTO_ENC(ret_type, nargs) \
+ BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_FUNC_PROTO, 0, nargs), ret_type)
+
+#define BTF_FUNC_PROTO_ARG_ENC(name, type) \
+ (name), (type)
+
+#define BTF_FUNC_ENC(name, func_proto) \
+ BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FUNC, 0, 0), func_proto)
+
+#endif /* _TEST_BTF_H */
--
2.17.1
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