18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef __BPF_UTIL__ 38c2ecf20Sopenharmony_ci#define __BPF_UTIL__ 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci#include <stdio.h> 68c2ecf20Sopenharmony_ci#include <stdlib.h> 78c2ecf20Sopenharmony_ci#include <string.h> 88c2ecf20Sopenharmony_ci#include <errno.h> 98c2ecf20Sopenharmony_ci#include <bpf/libbpf.h> /* libbpf_num_possible_cpus */ 108c2ecf20Sopenharmony_ci 118c2ecf20Sopenharmony_cistatic inline unsigned int bpf_num_possible_cpus(void) 128c2ecf20Sopenharmony_ci{ 138c2ecf20Sopenharmony_ci int possible_cpus = libbpf_num_possible_cpus(); 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ci if (possible_cpus < 0) { 168c2ecf20Sopenharmony_ci printf("Failed to get # of possible cpus: '%s'!\n", 178c2ecf20Sopenharmony_ci strerror(-possible_cpus)); 188c2ecf20Sopenharmony_ci exit(1); 198c2ecf20Sopenharmony_ci } 208c2ecf20Sopenharmony_ci return possible_cpus; 218c2ecf20Sopenharmony_ci} 228c2ecf20Sopenharmony_ci 238c2ecf20Sopenharmony_ci#define __bpf_percpu_val_align __attribute__((__aligned__(8))) 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_ci#define BPF_DECLARE_PERCPU(type, name) \ 268c2ecf20Sopenharmony_ci struct { type v; /* padding */ } __bpf_percpu_val_align \ 278c2ecf20Sopenharmony_ci name[bpf_num_possible_cpus()] 288c2ecf20Sopenharmony_ci#define bpf_percpu(name, cpu) name[(cpu)].v 298c2ecf20Sopenharmony_ci 308c2ecf20Sopenharmony_ci#ifndef ARRAY_SIZE 318c2ecf20Sopenharmony_ci# define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) 328c2ecf20Sopenharmony_ci#endif 338c2ecf20Sopenharmony_ci 348c2ecf20Sopenharmony_ci#ifndef sizeof_field 358c2ecf20Sopenharmony_ci#define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER)) 368c2ecf20Sopenharmony_ci#endif 378c2ecf20Sopenharmony_ci 388c2ecf20Sopenharmony_ci#ifndef offsetofend 398c2ecf20Sopenharmony_ci#define offsetofend(TYPE, MEMBER) \ 408c2ecf20Sopenharmony_ci (offsetof(TYPE, MEMBER) + sizeof_field(TYPE, MEMBER)) 418c2ecf20Sopenharmony_ci#endif 428c2ecf20Sopenharmony_ci 438c2ecf20Sopenharmony_ci#endif /* __BPF_UTIL__ */ 44