diff options
Diffstat (limited to 'include/bpf_elf.h')
| -rw-r--r-- | include/bpf_elf.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/include/bpf_elf.h b/include/bpf_elf.h new file mode 100644 index 0000000..ea8a11c --- /dev/null +++ b/include/bpf_elf.h @@ -0,0 +1,53 @@ +/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */ +#ifndef __BPF_ELF__ +#define __BPF_ELF__ + +#include <asm/types.h> + +/* Note: + * + * Below ELF section names and bpf_elf_map structure definition + * are not (!) kernel ABI. It's rather a "contract" between the + * application and the BPF loader in tc. For compatibility, the + * section names should stay as-is. Introduction of aliases, if + * needed, are a possibility, though. + */ + +/* ELF section names, etc */ +#define ELF_SECTION_LICENSE "license" +#define ELF_SECTION_MAPS "maps" +#define ELF_SECTION_PROG "prog" +#define ELF_SECTION_CLASSIFIER "classifier" +#define ELF_SECTION_ACTION "action" + +#define ELF_MAX_MAPS 64 +#define ELF_MAX_LICENSE_LEN 128 + +/* Object pinning settings */ +#define PIN_NONE 0 +#define PIN_OBJECT_NS 1 +#define PIN_GLOBAL_NS 2 + +/* ELF map definition */ +struct bpf_elf_map { + __u32 type; + __u32 size_key; + __u32 size_value; + __u32 max_elem; + __u32 flags; + __u32 id; + __u32 pinning; + __u32 inner_id; + __u32 inner_idx; +}; + +#define BPF_ANNOTATE_KV_PAIR(name, type_key, type_val) \ + struct ____btf_map_##name { \ + type_key key; \ + type_val value; \ + }; \ + struct ____btf_map_##name \ + __attribute__ ((section(".maps." #name), used)) \ + ____btf_map_##name = { } + +#endif /* __BPF_ELF__ */ |