LU-2675 libcfs: add libcfs/byteorder.h

[fs/lustre-release.git] / libcfs / include / libcfs / posix / libcfs.h

diff --git a/libcfs/include/libcfs/posix/libcfs.h b/libcfs/include/libcfs/posix/libcfs.h
index d96afcc..403861c 100644 (file)
--- a/libcfs/include/libcfs/posix/libcfs.h
+++ b/libcfs/include/libcfs/posix/libcfs.h
@@ -67,6 +67,7 @@
 #include <sys/utsname.h>
 #include <ctype.h>
 #include <stdbool.h>
+#include <limits.h>
 
 #ifdef HAVE_NETDB_H
 #include <netdb.h>
@@ -97,118 +98,31 @@
 #endif
 
 #include <libcfs/list.h>
-#include <libcfs/posix/posix-types.h>
 #include <libcfs/user-time.h>
 #include <libcfs/user-prim.h>
 #include <libcfs/user-mem.h>
 #include <libcfs/user-lock.h>
 #include <libcfs/user-tcpip.h>
-#include <libcfs/posix/posix-wordsize.h>
 #include <libcfs/user-bitops.h>
 
-# define do_gettimeofday(tv) gettimeofday(tv, NULL);
+#define do_gettimeofday(tv) gettimeofday(tv, NULL);
 typedef unsigned long long cfs_cycles_t;
 
 /* this goes in posix-fs.h */
 #include <sys/mount.h>
 
-#ifdef __linux__
 #include <mntent.h>
-#endif
 
 #define fget(x) NULL
 #define fput(f) do {} while (0)
 
-#ifdef __linux__
-/* Userpace byte flipping */
-# include <endian.h>
-# include <byteswap.h>
-# define __swab16(x) bswap_16(x)
-# define __swab32(x) bswap_32(x)
-# define __swab64(x) bswap_64(x)
-# define __swab16s(x) do {*(x) = bswap_16(*(x));} while (0)
-# define __swab32s(x) do {*(x) = bswap_32(*(x));} while (0)
-# define __swab64s(x) do {*(x) = bswap_64(*(x));} while (0)
-# if __BYTE_ORDER == __LITTLE_ENDIAN
-#  define le16_to_cpu(x) (x)
-#  define cpu_to_le16(x) (x)
-#  define le32_to_cpu(x) (x)
-#  define cpu_to_le32(x) (x)
-#  define le64_to_cpu(x) (x)
-#  define cpu_to_le64(x) (x)
-
-#  define be16_to_cpu(x) bswap_16(x)
-#  define cpu_to_be16(x) bswap_16(x)
-#  define be32_to_cpu(x) bswap_32(x)
-#  define cpu_to_be32(x) bswap_32(x)
-#  define be64_to_cpu(x) (__u64)bswap_64(x)
-#  define cpu_to_be64(x) (__u64)bswap_64(x)
-# else
-#  if __BYTE_ORDER == __BIG_ENDIAN
-#   define le16_to_cpu(x) bswap_16(x)
-#   define cpu_to_le16(x) bswap_16(x)
-#   define le32_to_cpu(x) bswap_32(x)
-#   define cpu_to_le32(x) bswap_32(x)
-#   define le64_to_cpu(x) (__u64)bswap_64(x)
-#   define cpu_to_le64(x) (__u64)bswap_64(x)
-
-#   define be16_to_cpu(x) (x)
-#   define cpu_to_be16(x) (x)
-#   define be32_to_cpu(x) (x)
-#   define cpu_to_be32(x) (x)
-#   define be64_to_cpu(x) (x)
-#   define cpu_to_be64(x) (x)
-
-#  else
-#   error "Unknown byte order"
-#  endif /* __BIG_ENDIAN */
-# endif /* __LITTLE_ENDIAN */
-#elif __APPLE__
-#define __cpu_to_le64(x)                        OSSwapHostToLittleInt64(x)
-#define __cpu_to_le32(x)                        OSSwapHostToLittleInt32(x)
-#define __cpu_to_le16(x)                        OSSwapHostToLittleInt16(x)
-
-#define __le16_to_cpu(x)                        OSSwapLittleToHostInt16(x)
-#define __le32_to_cpu(x)                        OSSwapLittleToHostInt32(x)
-#define __le64_to_cpu(x)                        OSSwapLittleToHostInt64(x)
-
-#define cpu_to_le64(x)                          __cpu_to_le64(x)
-#define cpu_to_le32(x)                          __cpu_to_le32(x)
-#define cpu_to_le16(x)                          __cpu_to_le16(x)
-
-#define le64_to_cpu(x)                          __le64_to_cpu(x)
-#define le32_to_cpu(x)                          __le32_to_cpu(x)
-#define le16_to_cpu(x)                          __le16_to_cpu(x)
-
-#define __swab16(x)                             OSSwapInt16(x)
-#define __swab32(x)                             OSSwapInt32(x)
-#define __swab64(x)                             OSSwapInt64(x)
-#define __swab16s(x)                            do { *(x) = __swab16(*(x)); } while (0)
-#define __swab32s(x)                            do { *(x) = __swab32(*(x)); } while (0)
-#define __swab64s(x)                            do { *(x) = __swab64(*(x)); } while (0)
-#endif
-
-#if !defined(ALIGN)
-#define __ALIGN_MASK(x, mask)  (((x) + (mask)) & ~(mask))
-#define ALIGN(x, a)            __ALIGN_MASK(x, (typeof(x))(a) - 1)
-#endif
-
-# ifndef THREAD_SIZE /* x86_64 linux has THREAD_SIZE in userspace */
-#  define THREAD_SIZE 8192
-# else
-# endif
+#ifndef THREAD_SIZE /* x86_64 linux has THREAD_SIZE in userspace */
+# define THREAD_SIZE 8192
+#endif /* THREAD_SIZE */
 
 #define CFS_CHECK_STACK(msgdata, mask, cdls) do {} while(0)
 #define CDEBUG_STACK() (0L)
 
-/* initial pid  */
-#define LUSTRE_LNET_PID          12345
-
-#define ENTRY_NESTING_SUPPORT (1)
-#define ENTRY_NESTING   do {;} while (0)
-#define EXIT_NESTING   do {;} while (0)
-#define __current_nesting_level() (0)
-
 /**
  * Platform specific declarations for cfs_curproc API (libcfs/curproc.h)
  *
@@ -273,12 +187,19 @@ struct shrinker {
 #endif
 };
 
-#define DEFAULT_SEEKS (0)
+struct shrinker_var {
+#ifndef __INTEL_COMPILER
+       ;
+#endif
+};
 
-typedef int (*shrinker_t)(int, unsigned int);
+#define DEF_SHRINKER_VAR(name, shrink, count, scan) \
+               struct shrinker_var name = {};
+
+#define DEFAULT_SEEKS (0)
 
 static inline
-struct shrinker *set_shrinker(int seeks, shrinker_t shrink)
+struct shrinker *set_shrinker(int seeks, struct shrinker_var *var)
 {
        return (struct shrinker *)0xdeadbea1; /* Cannot return NULL here */
 }
@@ -488,4 +409,8 @@ typedef ssize_t (*read_actor_t)();
 #  define DTTOIF(dirtype)      ((dirtype) << IFSHIFT)
 # endif
 
+#ifndef ERESTARTSYS
+#define ERESTARTSYS ERESTART
+#endif
+
 #endif