sock_map_prog_update
ret = sock_map_prog_update(map, NULL, prog, NULL, attr->attach_type);
WARN_ON_ONCE(sock_map_prog_update(sockmap_link->map, NULL, link->prog, link,
ret = sock_map_prog_update(map, prog, NULL, &sockmap_link->link, attach_type);
static int sock_map_prog_update(struct bpf_map *map, struct bpf_prog *prog,
ret = sock_map_prog_update(map, prog, NULL, NULL, attr->attach_type);