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mlxsw: item: Add MLXSW_ITEM_BUF_INDEXED helper

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Add missing item helper which allows to access char bufs on multiple
offsets. This is needed by SFD and SFN register definitions.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2015-10-16 14:01:27 +02:00 committed by David S. Miller
parent 7b0989b5bc
commit d64b159253
1 changed files with 40 additions and 6 deletions
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46
drivers/net/ethernet/mellanox/mlxsw/item.h
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@ -171,15 +171,21 @@ static inline void __mlxsw_item_set64(char *buf, struct mlxsw_item *item,
}
static inline void __mlxsw_item_memcpy_from(char *buf, char *dst,
struct mlxsw_item *item)
struct mlxsw_item *item,
unsigned short index)
{
memcpy(dst, &buf[item->offset], item->size.bytes);
unsigned int offset = __mlxsw_item_offset(item, index, sizeof(char));
memcpy(dst, &buf[offset], item->size.bytes);
}
static inline void __mlxsw_item_memcpy_to(char *buf, const char *src,
struct mlxsw_item *item)
struct mlxsw_item *item,
unsigned short index)
{
memcpy(&buf[item->offset], src, item->size.bytes);
unsigned int offset = __mlxsw_item_offset(item, index, sizeof(char));
memcpy(&buf[offset], src, item->size.bytes);
}
static inline u16
@ -371,12 +377,40 @@ static struct mlxsw_item __ITEM_NAME(_type, _cname, _iname) = { \
static inline void \
mlxsw_##_type##_##_cname##_##_iname##_memcpy_from(char *buf, char *dst) \
{ \
__mlxsw_item_memcpy_from(buf, dst, &__ITEM_NAME(_type, _cname, _iname));\
__mlxsw_item_memcpy_from(buf, dst, \
&__ITEM_NAME(_type, _cname, _iname), 0); \
} \
static inline void \
mlxsw_##_type##_##_cname##_##_iname##_memcpy_to(char *buf, const char *src) \
{ \
__mlxsw_item_memcpy_to(buf, src, &__ITEM_NAME(_type, _cname, _iname)); \
__mlxsw_item_memcpy_to(buf, src, \
&__ITEM_NAME(_type, _cname, _iname), 0); \
}
#define MLXSW_ITEM_BUF_INDEXED(_type, _cname, _iname, _offset, _sizebytes, \
_step, _instepoffset) \
static struct mlxsw_item __ITEM_NAME(_type, _cname, _iname) = { \
.offset = _offset, \
.step = _step, \
.in_step_offset = _instepoffset, \
.size = {.bytes = _sizebytes,}, \
.name = #_type "_" #_cname "_" #_iname, \
}; \
static inline void \
mlxsw_##_type##_##_cname##_##_iname##_memcpy_from(char *buf, \
unsigned short index, \
char *dst) \
{ \
__mlxsw_item_memcpy_from(buf, dst, \
&__ITEM_NAME(_type, _cname, _iname), index); \
} \
static inline void \
mlxsw_##_type##_##_cname##_##_iname##_memcpy_to(char *buf, \
unsigned short index, \
const char *src) \
{ \
__mlxsw_item_memcpy_to(buf, src, \
&__ITEM_NAME(_type, _cname, _iname), index); \
}
#define MLXSW_ITEM_BIT_ARRAY(_type, _cname, _iname, _offset, _sizebytes, \