diff options
Diffstat (limited to 'lib/prefix.h')
| -rw-r--r-- | lib/prefix.h | 27 |
1 files changed, 9 insertions, 18 deletions
diff --git a/lib/prefix.h b/lib/prefix.h index 5f1ff05c..7f0d3607 100644 --- a/lib/prefix.h +++ b/lib/prefix.h @@ -112,6 +112,7 @@ struct prefix_rd #define IPV4_NET0(a) ((((u_int32_t) (a)) & 0xff000000) == 0x00000000) #define IPV4_NET127(a) ((((u_int32_t) (a)) & 0xff000000) == 0x7f000000) #define IPV4_LINKLOCAL(a) ((((u_int32_t) (a)) & 0xffff0000) == 0xa9fe0000) +#define IPV4_CLASS_DE(a) ((((u_int32_t) (a)) & 0xe0000000) == 0xe0000000) /* Max bit/byte length of IPv6 address. */ #define IPV6_MAX_BYTELEN 16 @@ -127,26 +128,14 @@ struct prefix_rd /* Prefix's family member. */ #define PREFIX_FAMILY(p) ((p)->family) -/* Check bit of the prefix. */ -static inline unsigned int -prefix_bit (const u_char *prefix, const u_char prefixlen) -{ - unsigned int offset = prefixlen / 8; - unsigned int shift = 7 - (prefixlen % 8); - - return (prefix[offset] >> shift) & 1; -} - -static inline unsigned int -prefix6_bit (const struct in6_addr *prefix, const u_char prefixlen) -{ - return prefix_bit((const u_char *) &prefix->s6_addr, prefixlen); -} - /* Prototypes. */ extern int afi2family (afi_t); extern afi_t family2afi (int); +/* Check bit of the prefix. */ +extern unsigned int prefix_bit (const u_char *prefix, const u_char prefixlen); +extern unsigned int prefix6_bit (const struct in6_addr *prefix, const u_char prefixlen); + extern struct prefix *prefix_new (void); extern void prefix_free (struct prefix *); extern const char *prefix_family_str (const struct prefix *); @@ -156,12 +145,14 @@ extern int prefix2str (const struct prefix *, char *, int); extern int prefix_match (const struct prefix *, const struct prefix *); extern int prefix_same (const struct prefix *, const struct prefix *); extern int prefix_cmp (const struct prefix *, const struct prefix *); +extern int prefix_common_bits (const struct prefix *, const struct prefix *); extern void prefix_copy (struct prefix *dest, const struct prefix *src); extern void apply_mask (struct prefix *); extern struct prefix *sockunion2prefix (const union sockunion *dest, const union sockunion *mask); extern struct prefix *sockunion2hostprefix (const union sockunion *); +extern void prefix2sockunion (const struct prefix *, union sockunion *); extern struct prefix_ipv4 *prefix_ipv4_new (void); extern void prefix_ipv4_free (struct prefix_ipv4 *); @@ -175,7 +166,7 @@ extern int prefix_ipv4_any (const struct prefix_ipv4 *); extern void apply_classful_mask_ipv4 (struct prefix_ipv4 *); extern u_char ip_masklen (struct in_addr); -extern void masklen2ip (int, struct in_addr *); +extern void masklen2ip (const int, struct in_addr *); /* returns the network portion of the host address */ extern in_addr_t ipv4_network_addr (in_addr_t hostaddr, int masklen); /* given the address of a host on a network and the network mask length, @@ -196,7 +187,7 @@ extern void apply_mask_ipv6 (struct prefix_ipv6 *); *((struct prefix_ipv6 *)(DST)) = *((const struct prefix_ipv6 *)(SRC)); extern int ip6_masklen (struct in6_addr); -extern void masklen2ip6 (int, struct in6_addr *); +extern void masklen2ip6 (const int, struct in6_addr *); extern void str2in6_addr (const char *, struct in6_addr *); extern const char *inet6_ntoa (struct in6_addr); |