lib: optimize apply_mask_ipv6()
diff --git a/lib/prefix.c b/lib/prefix.c
index 1ddbbbe..c8fd0bd 100644
--- a/lib/prefix.c
+++ b/lib/prefix.c
@@ -660,23 +660,13 @@
void
apply_mask_ipv6 (struct prefix_ipv6 *p)
{
- u_char *pnt;
- int index;
- int offset;
-
- index = p->prefixlen / 8;
-
- if (index < 16)
- {
- pnt = (u_char *) &p->prefix;
- offset = p->prefixlen % 8;
-
- pnt[index] &= maskbit[offset];
- index++;
-
- while (index < 16)
- pnt[index++] = 0;
- }
+ assert (p->prefixlen >= 0 && p->prefixlen <= IPV6_MAX_BITLEN);
+ u_int32_t *addr_word = (u_int32_t *) &p->prefix;
+ u_int32_t *mask_word = (u_int32_t *) (maskbytes6 + p->prefixlen);
+ *addr_word++ &= *mask_word++;
+ *addr_word++ &= *mask_word++;
+ *addr_word++ &= *mask_word++;
+ *addr_word &= *mask_word;
}
void