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| author | David Anderson <danderson@tailscale.com> | 2021-11-10 12:15:03 -0800 |
|---|---|---|
| committer | David Anderson <danderson@tailscale.com> | 2021-11-10 12:15:03 -0800 |
| commit | 41710e1b810aa25c14ceb657a40b9ba616615435 (patch) | |
| tree | 4953322c9930fde10dae9ff057de28827e87fb52 /ebpf/include/linux/atmapi.h | |
| parent | 4a51050c498da33eaecb520b78aeb5f445a442f1 (diff) | |
| download | tailscale-danderson/ebpf.tar.xz tailscale-danderson/ebpf.zip | |
ebpf: experiments.danderson/ebpf
Diffstat (limited to 'ebpf/include/linux/atmapi.h')
| -rw-r--r-- | ebpf/include/linux/atmapi.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/ebpf/include/linux/atmapi.h b/ebpf/include/linux/atmapi.h new file mode 100644 index 000000000..c9bf5c23a --- /dev/null +++ b/ebpf/include/linux/atmapi.h @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* atmapi.h - ATM API user space/kernel compatibility */ + +/* Written 1999,2000 by Werner Almesberger, EPFL ICA */ + + +#ifndef _LINUX_ATMAPI_H +#define _LINUX_ATMAPI_H + +#if defined(__sparc__) || defined(__ia64__) +/* such alignment is not required on 32 bit sparcs, but we can't + figure that we are on a sparc64 while compiling user-space programs. */ +#define __ATM_API_ALIGN __attribute__((aligned(8))) +#else +#define __ATM_API_ALIGN +#endif + + +/* + * Opaque type for kernel pointers. Note that _ is never accessed. We need + * the struct in order hide the array, so that we can make simple assignments + * instead of being forced to use memcpy. It also improves error reporting for + * code that still assumes that we're passing unsigned longs. + * + * Convention: NULL pointers are passed as a field of all zeroes. + */ + +typedef struct { unsigned char _[8]; } __ATM_API_ALIGN atm_kptr_t; + +#endif |
