mirror of https://github.com/F-Stack/f-stack.git
54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
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#ifndef __BPF_ELF__
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#define __BPF_ELF__
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#include <asm/types.h>
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/* Note:
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*
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* Below ELF section names and bpf_elf_map structure definition
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* are not (!) kernel ABI. It's rather a "contract" between the
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* application and the BPF loader in tc. For compatibility, the
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* section names should stay as-is. Introduction of aliases, if
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* needed, are a possibility, though.
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*/
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/* ELF section names, etc */
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#define ELF_SECTION_LICENSE "license"
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#define ELF_SECTION_MAPS "maps"
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#define ELF_SECTION_PROG "prog"
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#define ELF_SECTION_CLASSIFIER "classifier"
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#define ELF_SECTION_ACTION "action"
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#define ELF_MAX_MAPS 64
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#define ELF_MAX_LICENSE_LEN 128
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/* Object pinning settings */
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#define PIN_NONE 0
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#define PIN_OBJECT_NS 1
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#define PIN_GLOBAL_NS 2
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/* ELF map definition */
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struct bpf_elf_map {
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__u32 type;
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__u32 size_key;
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__u32 size_value;
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__u32 max_elem;
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__u32 flags;
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__u32 id;
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__u32 pinning;
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__u32 inner_id;
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__u32 inner_idx;
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};
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#define BPF_ANNOTATE_KV_PAIR(name, type_key, type_val) \
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struct ____btf_map_##name { \
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type_key key; \
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type_val value; \
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}; \
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struct ____btf_map_##name \
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__attribute__ ((section(".maps." #name), used)) \
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____btf_map_##name = { }
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#endif /* __BPF_ELF__ */
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