include/bpf_elf.h

   1 #ifndef __BPF_ELF__
   2 #define __BPF_ELF__
   3
   4 #include <asm/types.h>
   5
   6 /* Note:
   7  *
   8  * Below ELF section names and bpf_elf_map structure definition
   9  * are not (!) kernel ABI. It's rather a "contract" between the
  10  * application and the BPF loader in tc. For compatibility, the
  11  * section names should stay as-is. Introduction of aliases, if
  12  * needed, are a possibility, though.
  13  */
  14
  15 /* ELF section names, etc */
  16 #define ELF_SECTION_LICENSE     "license"
  17 #define ELF_SECTION_MAPS        "maps"
  18 #define ELF_SECTION_CLASSIFIER  "classifier"
  19 #define ELF_SECTION_ACTION      "action"
  20
  21 #define ELF_MAX_MAPS            64
  22 #define ELF_MAX_LICENSE_LEN     128
  23
  24 /* ELF map definition */
  25 struct bpf_elf_map {
  26         __u32 type;
  27         __u32 size_key;
  28         __u32 size_value;
  29         __u32 max_elem;
  30         __u32 id;
  31 };
  32
  33 #endif /* __BPF_ELF__ */