Contributors: 8
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Daniel Borkmann |
68 |
33.50% |
3 |
25.00% |
| Rong Tao |
68 |
33.50% |
1 |
8.33% |
| Martin KaFai Lau |
29 |
14.29% |
1 |
8.33% |
| Alexei Starovoitov |
22 |
10.84% |
3 |
25.00% |
| Hechao Li |
11 |
5.42% |
1 |
8.33% |
| Brenden Blanco |
3 |
1.48% |
1 |
8.33% |
| Toke Höiland-Jörgensen |
1 |
0.49% |
1 |
8.33% |
| Greg Kroah-Hartman |
1 |
0.49% |
1 |
8.33% |
| Total |
203 |
|
12 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __BPF_UTIL__
#define __BPF_UTIL__
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <bpf/libbpf.h> /* libbpf_num_possible_cpus */
static inline unsigned int bpf_num_possible_cpus(void)
{
int possible_cpus = libbpf_num_possible_cpus();
if (possible_cpus < 0) {
printf("Failed to get # of possible cpus: '%s'!\n",
strerror(-possible_cpus));
exit(1);
}
return possible_cpus;
}
/* Copy up to sz - 1 bytes from zero-terminated src string and ensure that dst
* is zero-terminated string no matter what (unless sz == 0, in which case
* it's a no-op). It's conceptually close to FreeBSD's strlcpy(), but differs
* in what is returned. Given this is internal helper, it's trivial to extend
* this, when necessary. Use this instead of strncpy inside libbpf source code.
*/
static inline void bpf_strlcpy(char *dst, const char *src, size_t sz)
{
size_t i;
if (sz == 0)
return;
sz--;
for (i = 0; i < sz && src[i]; i++)
dst[i] = src[i];
dst[i] = '\0';
}
#define __bpf_percpu_val_align __attribute__((__aligned__(8)))
#define BPF_DECLARE_PERCPU(type, name) \
struct { type v; /* padding */ } __bpf_percpu_val_align \
name[bpf_num_possible_cpus()]
#define bpf_percpu(name, cpu) name[(cpu)].v
#ifndef ARRAY_SIZE
# define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#endif
#ifndef sizeof_field
#define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER))
#endif
#ifndef offsetofend
#define offsetofend(TYPE, MEMBER) \
(offsetof(TYPE, MEMBER) + sizeof_field(TYPE, MEMBER))
#endif
#endif /* __BPF_UTIL__ */