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| author | Alexander Duyck <alexander.h.duyck@intel.com> | 2011-05-04 11:41:46 -0700 |
|---|---|---|
| committer | Ben Hutchings <bhutchings@solarflare.com> | 2011-05-13 01:04:59 +0100 |
| commit | 9a7baa6c15344dee34d5a9dd0308dc43fc29c488 (patch) | |
| tree | 918662021bbc43c575b1f20b3a83f337e20e1a26 /ethtool-bitops.h | |
| parent | 8a7c0708b6fb7be245c21e9f6aabb0d8fd968a03 (diff) | |
| download | ethtool-9a7baa6c15344dee34d5a9dd0308dc43fc29c488.tar.gz | |
Add support for __be64 and bitops, centralize several needed macros
This change is meant to add support for __be64 values and bitops to
ethtool. In addition the patch pulls the SIOCETHTOOL define and the
ARRAY_SIZE define into ethtool-util.h for later use by the rxclass files.
These changes will be needed in order to support network flow
classifier rule configuration.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Diffstat (limited to 'ethtool-bitops.h')
| -rw-r--r-- | ethtool-bitops.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/ethtool-bitops.h b/ethtool-bitops.h new file mode 100644 index 0000000..b1eb426 --- /dev/null +++ b/ethtool-bitops.h @@ -0,0 +1,25 @@ +#ifndef ETHTOOL_BITOPS_H__ +#define ETHTOOL_BITOPS_H__ + +#define BITS_PER_BYTE 8 +#define BITS_PER_LONG (BITS_PER_BYTE * sizeof(long)) +#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d)) +#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_LONG) + +static inline void set_bit(int nr, unsigned long *addr) +{ + addr[nr / BITS_PER_LONG] |= 1UL << (nr % BITS_PER_LONG); +} + +static inline void clear_bit(int nr, unsigned long *addr) +{ + addr[nr / BITS_PER_LONG] &= ~(1UL << (nr % BITS_PER_LONG)); +} + +static inline int test_bit(unsigned int nr, const unsigned long *addr) +{ + return !!((1UL << (nr % BITS_PER_LONG)) & + (((unsigned long *)addr)[nr / BITS_PER_LONG])); +} + +#endif |