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libbpf: Support loading individual progs

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Allow the individual program load to be invoked. This will help with
testing, where a single ELF may contain several sections, some of which
denote subprograms that are expected to fail verification, along with
some which are expected to pass verification. By allowing programs to be
iterated and individually loaded, each program can be independently
checked against its expected verification result.

Signed-off-by: Joe Stringer <joe@wand.net.nz>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Joe Stringer 2018-10-02 13:35:39 -07:00 committed by Daniel Borkmann
parent b584ab8840
commit 29cd77f416
2 changed files with 5 additions and 2 deletions
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4
tools/lib/bpf/libbpf.c
View File

@ -228,7 +228,7 @@ struct bpf_object {
};
#define obj_elf_valid(o) ((o)->efile.elf)
static void bpf_program__unload(struct bpf_program *prog)
void bpf_program__unload(struct bpf_program *prog)
{
int i;
@ -1375,7 +1375,7 @@ out:
return ret;
}
static int
int
bpf_program__load(struct bpf_program *prog,
char *license, u32 kern_version)
{

3
tools/lib/bpf/libbpf.h
View File

@ -128,10 +128,13 @@ void bpf_program__set_ifindex(struct bpf_program *prog, __u32 ifindex);
const char *bpf_program__title(struct bpf_program *prog, bool needs_copy);
int bpf_program__load(struct bpf_program *prog, char *license,
u32 kern_version);
int bpf_program__fd(struct bpf_program *prog);
int bpf_program__pin_instance(struct bpf_program *prog, const char *path,
int instance);
int bpf_program__pin(struct bpf_program *prog, const char *path);
void bpf_program__unload(struct bpf_program *prog);
struct bpf_insn;