linux/samples/bpf
Alexei Starovoitov 249b812d80 samples: bpf: elf_bpf file loader
simple .o parser and loader using BPF syscall.
.o is a standard ELF generated by LLVM backend

It parses elf file compiled by llvm .c->.o
- parses 'maps' section and creates maps via BPF syscall
- parses 'license' section and passes it to syscall
- parses elf relocations for BPF maps and adjusts BPF_LD_IMM64 insns
  by storing map_fd into insn->imm and marking such insns as BPF_PSEUDO_MAP_FD
- loads eBPF programs via BPF syscall

One ELF file can contain multiple BPF programs.

int load_bpf_file(char *path);
populates prog_fd[] and map_fd[] with FDs received from bpf syscall

bpf_helpers.h - helper functions available to eBPF programs written in C

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-05 21:47:33 -08:00
..
bpf_helpers.h samples: bpf: elf_bpf file loader 2014-12-05 21:47:33 -08:00
bpf_load.c samples: bpf: elf_bpf file loader 2014-12-05 21:47:33 -08:00
bpf_load.h samples: bpf: elf_bpf file loader 2014-12-05 21:47:33 -08:00
libbpf.c samples: bpf: example of stateful socket filtering 2014-12-05 21:47:32 -08:00
libbpf.h samples: bpf: example of stateful socket filtering 2014-12-05 21:47:32 -08:00
Makefile samples: bpf: example of stateful socket filtering 2014-12-05 21:47:32 -08:00
sock_example.c samples: bpf: example of stateful socket filtering 2014-12-05 21:47:32 -08:00
test_maps.c bpf: add a testsuite for eBPF maps 2014-11-18 13:43:59 -05:00
test_verifier.c bpf: remove test map scaffolding and user proper types 2014-11-18 13:44:00 -05:00