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bpf: selftests add sockmap tests

Browse source 
This generates a set of sockets, attaches BPF programs, and sends some
simple traffic using basic send/recv pattern. Additionally, we do a bunch
of negative tests to ensure adding/removing socks out of the sockmap fail
correctly.

Signed-off-by: John Fastabend <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
John Fastabend 2017-08-15 22:34:22 -07:00 • committed by David S. Miller
commit 6f6d33f3b3
7 changed files with 443 additions and 39 deletions
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29
tools/lib/bpf/libbpf.c
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@ -1744,3 +1744,32 @@ long libbpf_get_error(const void *ptr)
return PTR_ERR(ptr);
return 0;
}
int bpf_prog_load(const char *file, enum bpf_prog_type type,
struct bpf_object **pobj, int *prog_fd)
{
struct bpf_program *prog;
struct bpf_object *obj;
int err;
obj = bpf_object__open(file);
if (IS_ERR(obj))
return -ENOENT;
prog = bpf_program__next(NULL, obj);
if (!prog) {
bpf_object__close(obj);
return -ENOENT;
}
bpf_program__set_type(prog, type);
err = bpf_object__load(obj);
if (err) {
bpf_object__close(obj);
return -EINVAL;
}
*pobj = obj;
*prog_fd = bpf_program__fd(prog);
return 0;
}

2
tools/lib/bpf/libbpf.h
View file

@ -243,4 +243,6 @@ int bpf_map__pin(struct bpf_map *map, const char *path);
long libbpf_get_error(const void *ptr);
int bpf_prog_load(const char *file, enum bpf_prog_type type,
struct bpf_object **pobj, int *prog_fd);
#endif