[PATCH 01/21] lib: add byteorder helpers for the aligned case
From: Harvey Harrison
Date: Tue May 20 2008 - 14:05:36 EST
Some users know the pointer they are writeing to are aligned,
rather than doing *(__le16 *)ptr = cpu_to_le16(val) add helpers
wrapping this up that have the same convention as put_unaligned_le/be.
Although the get_be/le versions duplicate the le16_to_cpup functionality
add them anyway as it makes this a complete api and start work to
eliminate {le|be}{16|32|64}_to_cpup uses (not many).
This makes the api look like:
get_unaligned_le16
put_unaligned_le16
get_le16
put_le16
With explicit alignment constraints.
Signed-off-by: Harvey Harrison <harvey.harrison@xxxxxxxxx>
---
include/linux/byteorder/generic.h | 60 +++++++++++++++++++++++++++++++++++++
1 files changed, 60 insertions(+), 0 deletions(-)
diff --git a/include/linux/byteorder/generic.h b/include/linux/byteorder/generic.h
index 0846e6b..1f0c07e 100644
--- a/include/linux/byteorder/generic.h
+++ b/include/linux/byteorder/generic.h
@@ -119,6 +119,66 @@
#define cpu_to_be16s __cpu_to_be16s
#define be16_to_cpus __be16_to_cpus
+static inline u16 get_le16(void *ptr)
+{
+ return le16_to_cpu(*(__le16 *)ptr);
+}
+
+static inline u32 get_le32(void *ptr)
+{
+ return le32_to_cpu(*(__le32 *)ptr);
+}
+
+static inline u64 get_le64(void *ptr)
+{
+ return le64_to_cpu(*(__le64 *)ptr);
+}
+
+static inline u16 get_be16(void *ptr)
+{
+ return be16_to_cpu(*(__be16 *)ptr);
+}
+
+static inline u32 get_be32(void *ptr)
+{
+ return be32_to_cpu(*(__be32 *)ptr);
+}
+
+static inline u64 get_be64(void *ptr)
+{
+ return be64_to_cpu(*(__be64 *)ptr);
+}
+
+static inline void put_le16(u16 val, void *ptr)
+{
+ *(__le16 *)ptr = cpu_to_le16(val);
+}
+
+static inline void put_le32(u32 val, void *ptr)
+{
+ *(__le32 *)ptr = cpu_to_le32(val);
+}
+
+static inline void put_le64(u64 val, void *ptr)
+{
+ *(__le64 *)ptr = cpu_to_le64(val);
+}
+
+static inline void put_be16(u16 val, void *ptr)
+{
+ *(__be16 *)ptr = cpu_to_be16(val);
+}
+
+static inline void put_be32(u32 val, void *ptr)
+{
+ *(__be32 *)ptr = cpu_to_be32(val);
+}
+
+static inline void put_be64(u64 val, void *ptr)
+{
+ *(__be64 *)ptr = cpu_to_be64(val);
+}
+
/*
* They have to be macros in order to do the constant folding
* correctly - if the argument passed into a inline function
--
1.5.5.1.570.g26b5e
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