diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-03-28 04:21:18 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-28 04:26:01 +0100 |
| commit | 82268da1b130f763d22d04f7d016bbf6fc8815c2 (patch) | |
| tree | 9803f361556d10708313e980428e63a18162e667 /include/linux/netfilter/x_tables.h | |
| parent | 6e15cf04860074ad032e88c306bea656bbdd0f22 (diff) | |
| parent | 5d80f8e5a9dc9c9a94d4aeaa567e219a808b8a4a (diff) | |
Merge branch 'linus' into percpu-cpumask-x86-for-linus-2
Conflicts:
arch/sparc/kernel/time_64.c
drivers/gpu/drm/drm_proc.c
Manual merge to resolve build warning due to phys_addr_t type change
on x86:
drivers/gpu/drm/drm_info.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/netfilter/x_tables.h')
| -rw-r--r-- | include/linux/netfilter/x_tables.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h index adbc50a20ec..7b1a652066c 100644 --- a/include/linux/netfilter/x_tables.h +++ b/include/linux/netfilter/x_tables.h @@ -437,6 +437,29 @@ extern void xt_free_table_info(struct xt_table_info *info); extern void xt_table_entry_swap_rcu(struct xt_table_info *old, struct xt_table_info *new); +/* + * This helper is performance critical and must be inlined + */ +static inline unsigned long ifname_compare_aligned(const char *_a, + const char *_b, + const char *_mask) +{ + const unsigned long *a = (const unsigned long *)_a; + const unsigned long *b = (const unsigned long *)_b; + const unsigned long *mask = (const unsigned long *)_mask; + unsigned long ret; + + ret = (a[0] ^ b[0]) & mask[0]; + if (IFNAMSIZ > sizeof(unsigned long)) + ret |= (a[1] ^ b[1]) & mask[1]; + if (IFNAMSIZ > 2 * sizeof(unsigned long)) + ret |= (a[2] ^ b[2]) & mask[2]; + if (IFNAMSIZ > 3 * sizeof(unsigned long)) + ret |= (a[3] ^ b[3]) & mask[3]; + BUILD_BUG_ON(IFNAMSIZ > 4 * sizeof(unsigned long)); + return ret; +} + #ifdef CONFIG_COMPAT #include <net/compat.h> |