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| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2008-07-22 12:13:43 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2008-07-22 12:13:43 +0200 |
| commit | 77b1fdb824eb45213df4f57224e8e799fed43ded (patch) | |
| tree | 282a395e7ab2d8fe8cfe12f34e6d09535d067101 /include/bitops.h | |
| parent | 2de606c2458067c48e72058a31af384574cf9c70 (diff) | |
| download | conntrack-tools-77b1fdb824eb45213df4f57224e8e799fed43ded.tar.gz conntrack-tools-77b1fdb824eb45213df4f57224e8e799fed43ded.zip | |
Major rework of the user-space event filtering
This patch reworks the user-space filtering. Although we have
kernel-space filtering since Linux kernel >= 2.6.26, we keep userspace
filtering to ensure backward compatibility. Moreover, this patch
prepares the implementation of the kernel-space filtering via
libnetfilter_conntrack's high-level berkeley socket filter API.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/bitops.h')
| -rw-r--r-- | include/bitops.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/include/bitops.h b/include/bitops.h new file mode 100644 index 0000000..51f4289 --- /dev/null +++ b/include/bitops.h @@ -0,0 +1,36 @@ +#ifndef _BITOPS_H_ +#define _BITOPS_H_ + +#include <stdlib.h> + +static inline void set_bit_u32(int nr, u_int32_t *addr) +{ + addr[nr >> 5] |= (1UL << (nr & 31)); +} + +static inline void unset_bit_u32(int nr, u_int32_t *addr) +{ + addr[nr >> 5] &= ~(1UL << (nr & 31)); +} + +static inline int test_bit_u32(int nr, const u_int32_t *addr) +{ + return ((1UL << (nr & 31)) & (addr[nr >> 5])) != 0; +} + +static inline void set_bit_u16(int nr, u_int16_t *addr) +{ + addr[nr >> 4] |= (1UL << (nr & 15)); +} + +static inline void unset_bit_u16(int nr, u_int16_t *addr) +{ + addr[nr >> 4] &= ~(1UL << (nr & 15)); +} + +static inline int test_bit_u16(int nr, const u_int16_t *addr) +{ + return ((1UL << (nr & 15)) & (addr[nr >> 4])) != 0; +} + +#endif |