#ifndef _ZEBRA_PREFIX_H
#define _ZEBRA_PREFIX_H
+#ifdef SUNOS_5
+# include <sys/ethernet.h>
+#else
+# ifdef GNU_LINUX
+# include <net/ethernet.h>
+# else
+# include <netinet/if_ether.h>
+# endif
+#endif
#include "sockunion.h"
+#ifndef ETHER_ADDR_LEN
+#ifdef ETHERADDRL
+#define ETHER_ADDR_LEN ETHERADDRL
+#else
+#define ETHER_ADDR_LEN 6
+#endif
+#endif
+
+#define ETHER_ADDR_STRLEN (3*ETHER_ADDR_LEN)
+/*
+ * there isn't a portable ethernet address type. We define our
+ * own to simplify internal handling
+ */
+struct ethaddr {
+ u_char octet[ETHER_ADDR_LEN];
+} __attribute__ ((packed));
+
+
+/* length is the number of valuable bits of prefix structure
+* 18 bytes is current length in structure, if address is ipv4
+* 30 bytes is in case of ipv6
+*/
+#define PREFIX_LEN_ROUTE_TYPE_5_IPV4 (18*8)
+#define PREFIX_LEN_ROUTE_TYPE_5_IPV6 (30*8)
+
+/* EVPN address (RFC 7432) */
+struct evpn_addr
+{
+ u_char route_type;
+ u_char flags;
+#define IP_ADDR_NONE 0x0
+#define IP_ADDR_V4 0x1
+#define IP_ADDR_V6 0x2
+#define IP_PREFIX_V4 0x4
+#define IP_PREFIX_V6 0x8
+ struct ethaddr mac;
+ uint32_t eth_tag;
+ u_char ip_prefix_length;
+ union
+ {
+ u_char addr;
+ struct in_addr v4_addr;
+ struct in6_addr v6_addr;
+ } ip;
+};
+
+/* EVPN prefix structure. */
+struct prefix_evpn
+{
+ u_char family;
+ u_char prefixlen;
+ struct evpn_addr prefix __attribute__ ((aligned (8)));
+};
+
/*
* A struct prefix contains an address family, a prefix length, and an
* address. This can represent either a 'network prefix' as defined
* interface.
*/
+/* different OSes use different names */
+#if defined(AF_PACKET)
+#define AF_ETHERNET AF_PACKET
+#else
+#if defined(AF_LINK)
+#define AF_ETHERNET AF_LINK
+#endif
+#endif
+
/* IPv4 and IPv6 unified prefix structure. */
struct prefix
{
{
u_char prefix;
struct in_addr prefix4;
-#ifdef HAVE_IPV6
struct in6_addr prefix6;
-#endif /* HAVE_IPV6 */
struct
{
struct in_addr id;
struct in_addr adv_router;
} lp;
+ struct ethaddr prefix_eth; /* AF_ETHERNET */
u_char val[8];
+ uintptr_t ptr;
+ struct evpn_addr prefix_evpn;
} u __attribute__ ((aligned (8)));
};
};
/* IPv6 prefix structure. */
-#ifdef HAVE_IPV6
struct prefix_ipv6
{
u_char family;
u_char prefixlen;
struct in6_addr prefix __attribute__ ((aligned (8)));
};
-#endif /* HAVE_IPV6 */
struct prefix_ls
{
u_char val[8] __attribute__ ((aligned (8)));
};
+/* Prefix for ethernet. */
+struct prefix_eth
+{
+ u_char family;
+ u_char prefixlen;
+ struct ethaddr eth_addr __attribute__ ((aligned (8))); /* AF_ETHERNET */
+};
+
+/* Prefix for a generic pointer */
+struct prefix_ptr
+{
+ u_char family;
+ u_char prefixlen;
+ uintptr_t prefix __attribute__ ((aligned (8)));
+};
+
+struct prefix_sg
+{
+ u_char family;
+ u_char prefixlen;
+ struct in_addr src __attribute ((aligned (8)));
+ struct in_addr grp;
+};
+
+/* helper to get type safety/avoid casts on calls
+ * (w/o this, functions accepting all prefix types need casts on the caller
+ * side, which strips type safety since the cast will accept any pointer
+ * type.)
+ */
+union prefixptr
+{
+ struct prefix *p;
+ struct prefix_ipv4 *p4;
+ struct prefix_ipv6 *p6;
+ struct prefix_evpn *evp;
+} __attribute__ ((transparent_union));
+
+union prefixconstptr
+{
+ const struct prefix *p;
+ const struct prefix_ipv4 *p4;
+ const struct prefix_ipv6 *p6;
+ const struct prefix_evpn *evp;
+} __attribute__ ((transparent_union));
+
#ifndef INET_ADDRSTRLEN
#define INET_ADDRSTRLEN 16
#endif /* INET_ADDRSTRLEN */
#define INET6_BUFSIZ 51
#endif /* INET6_BUFSIZ */
+/* Maximum prefix string length (IPv6) */
+#define PREFIX_STRLEN 51
+
/* Max bit/byte length of IPv4 address. */
#define IPV4_MAX_BYTELEN 4
#define IPV4_MAX_BITLEN 32
#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
/* 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);
-}
+/* glibc defines s6_addr32 to __in6_u.__u6_addr32 if __USE_{MISC || GNU} */
+#ifndef s6_addr32
+#if defined(SUNOS_5)
+/* Some SunOS define s6_addr32 only to kernel */
+#define s6_addr32 _S6_un._S6_u32
+#else
+#define s6_addr32 __u6_addr.__u6_addr32
+#endif /* SUNOS_5 */
+#endif /*s6_addr32*/
/* Prototypes. */
-extern int afi2family (int);
-extern int family2afi (int);
+extern int str2family(const char *);
+extern int afi2family (afi_t);
+extern afi_t family2afi (int);
+extern const char *safi2str(safi_t safi);
+extern const char *afi2str(afi_t afi);
+
+/* 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 *);
extern int prefix_blen (const struct prefix *);
extern int str2prefix (const char *, struct prefix *);
-extern int prefix2str (const struct prefix *, char *, int);
+
+#define PREFIX2STR_BUFFER PREFIX_STRLEN
+
+extern const char *prefix2str (union prefixconstptr, 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 struct prefix *sockunion2hostprefix (const union sockunion *, struct prefix *p);
+extern void prefix2sockunion (const struct prefix *, union sockunion *);
+
+extern int str2prefix_eth (const char *, struct prefix_eth *);
extern struct prefix_ipv4 *prefix_ipv4_new (void);
extern void prefix_ipv4_free (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,
extern int netmask_str2prefix_str (const char *, const char *, char *);
-#ifdef HAVE_IPV6
extern struct prefix_ipv6 *prefix_ipv6_new (void);
extern void prefix_ipv6_free (struct prefix_ipv6 *);
extern int str2prefix_ipv6 (const char *, 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);
-#endif /* HAVE_IPV6 */
+extern int prefix_str2mac(const char *str, struct ethaddr *mac);
+extern char *prefix_mac2str(const struct ethaddr *mac, char *buf, int size);
+
+static inline int ipv6_martian (struct in6_addr *addr)
+{
+ struct in6_addr localhost_addr;
+
+ inet_pton (AF_INET6, "::1", &localhost_addr);
+
+ if (IPV6_ADDR_SAME(&localhost_addr, addr))
+ return 1;
+
+ return 0;
+}
extern int all_digit (const char *);
+/* NOTE: This routine expects the address argument in network byte order. */
+static inline int ipv4_martian (struct in_addr *addr)
+{
+ in_addr_t ip = ntohl(addr->s_addr);
+
+ if (IPV4_NET0(ip) || IPV4_NET127(ip) || IPV4_CLASS_DE(ip)) {
+ return 1;
+ }
+ return 0;
+}
+
+static inline int
+is_default_prefix (struct prefix *p)
+{
+ if (!p)
+ return 0;
+
+ if (((p->family == AF_INET) && (p->u.prefix4.s_addr == INADDR_ANY))
+ || ((p->family == AF_INET6) &&
+ !memcmp(&p->u.prefix6, &in6addr_any, sizeof (struct in6_addr))))
+ return 1;
+
+ return 0;
+}
+
#endif /* _ZEBRA_PREFIX_H */
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