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#ifndef __BPF_SYS__
#define __BPF_SYS__
#include <stdint.h>
#include <stdlib.h>
#include <sys/syscall.h>
#include <linux/bpf.h>
static inline __u64 bpf_ptr_to_u64(const void *ptr)
{
return (__u64)(unsigned long) ptr;
}
static inline int bpf(int cmd, union bpf_attr *attr, unsigned int size)
{
#ifdef __NR_bpf
return syscall(__NR_bpf, cmd, attr, size);
#else
fprintf(stderr, "No bpf syscall, kernel headers too old?\n");
errno = ENOSYS;
return -1;
#endif
}
#endif /* __BPF_SYS__ */
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