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43 lines
1.0 KiB
43 lines
1.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __BPF_UTIL__ |
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#define __BPF_UTIL__ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <errno.h> |
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#include <bpf/libbpf.h> /* libbpf_num_possible_cpus */ |
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static inline unsigned int bpf_num_possible_cpus(void) |
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{ |
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int possible_cpus = libbpf_num_possible_cpus(); |
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if (possible_cpus < 0) { |
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printf("Failed to get # of possible cpus: '%s'!\n", |
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strerror(-possible_cpus)); |
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exit(1); |
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} |
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return possible_cpus; |
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} |
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#define __bpf_percpu_val_align __attribute__((__aligned__(8))) |
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#define BPF_DECLARE_PERCPU(type, name) \ |
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struct { type v; /* padding */ } __bpf_percpu_val_align \ |
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name[bpf_num_possible_cpus()] |
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#define bpf_percpu(name, cpu) name[(cpu)].v |
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#ifndef ARRAY_SIZE |
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# define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) |
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#endif |
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#ifndef sizeof_field |
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#define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER)) |
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#endif |
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#ifndef offsetofend |
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#define offsetofend(TYPE, MEMBER) \ |
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(offsetof(TYPE, MEMBER) + sizeof_field(TYPE, MEMBER)) |
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#endif |
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#endif /* __BPF_UTIL__ */
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