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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* atmapi.h - ATM API user space/kernel compatibility */
2
3/* Written 1999,2000 by Werner Almesberger, EPFL ICA */
4
5
6#ifndef _LINUX_ATMAPI_H
7#define _LINUX_ATMAPI_H
8
9#if defined(__sparc__) || defined(__ia64__)
10/* such alignment is not required on 32 bit sparcs, but we can't
11 figure that we are on a sparc64 while compiling user-space programs. */
12#define __ATM_API_ALIGN __attribute__((aligned(8)))
13#else
14#define __ATM_API_ALIGN
15#endif
16
17
18/*
19 * Opaque type for kernel pointers. Note that _ is never accessed. We need
20 * the struct in order hide the array, so that we can make simple assignments
21 * instead of being forced to use memcpy. It also improves error reporting for
22 * code that still assumes that we're passing unsigned longs.
23 *
24 * Convention: NULL pointers are passed as a field of all zeroes.
25 */
26
27typedef struct { unsigned char _[8]; } __ATM_API_ALIGN atm_kptr_t;
28
29#endif