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_PROG        "prog"
  19 #define ELF_SECTION_CLASSIFIER  "classifier"
  20 #define ELF_SECTION_ACTION      "action"
  21
  22 #define ELF_MAX_MAPS            64
  23 #define ELF_MAX_LICENSE_LEN     128
  24
  25 /* Object pinning settings */
  26 #define PIN_NONE                0
  27 #define PIN_OBJECT_NS           1
  28 #define PIN_GLOBAL_NS           2
  29
  30 /* ELF map definition */
  31 struct bpf_elf_map {
  32         __u32 type;
  33         __u32 size_key;
  34         __u32 size_value;
  35         __u32 max_elem;
  36         __u32 flags;
  37         __u32 id;
  38         __u32 pinning;
  39 };
  40
  41 #endif /* __BPF_ELF__ */