#include <zebra.h>
+#ifdef __cplusplus
+extern "C" {
+#endif
+
/*
* Generic IP address - union of IPv4 and IPv6 address.
*/
struct ipaddr {
enum ipaddr_type_t ipa_type;
union {
- u_char addr;
+ uint8_t addr;
struct in_addr _v4_addr;
struct in6_addr _v6_addr;
} ip;
#define SET_IPADDR_V4(p) (p)->ipa_type = IPADDR_V4
#define SET_IPADDR_V6(p) (p)->ipa_type = IPADDR_V6
+#define IPADDRSZ(p) \
+ (IS_IPADDR_V4((p)) ? sizeof(struct in_addr) : sizeof(struct in6_addr))
+
static inline int str2ipaddr(const char *str, struct ipaddr *ip)
{
int ret;
return -1;
}
-static inline char *ipaddr2str(struct ipaddr *ip, char *buf, int size)
+static inline char *ipaddr2str(const struct ipaddr *ip, char *buf, int size)
{
buf[0] = '\0';
if (ip) {
}
return buf;
}
+
+/*
+ * Convert IPv4 address to IPv4-mapped IPv6 address which is of the
+ * form ::FFFF:<IPv4 address> (RFC 4291). This IPv6 address can then
+ * be used to represent the IPv4 address, wherever only an IPv6 address
+ * is required.
+ */
+static inline void ipv4_to_ipv4_mapped_ipv6(struct in6_addr *in6,
+ struct in_addr in)
+{
+ uint32_t addr_type = htonl(0xFFFF);
+
+ memset(in6, 0, sizeof(struct in6_addr));
+ memcpy((char *)in6 + 8, &addr_type, sizeof(addr_type));
+ memcpy((char *)in6 + 12, &in, sizeof(struct in_addr));
+}
+
+/*
+ * convert an ipv4 mapped ipv6 address back to ipv4 address
+ */
+static inline void ipv4_mapped_ipv6_to_ipv4(struct in6_addr *in6,
+ struct in_addr *in)
+{
+ memset(in, 0, sizeof(struct in_addr));
+ memcpy(in, (char *)in6 + 12, sizeof(struct in_addr));
+}
+
+static inline bool ipaddr_isset(struct ipaddr *ip)
+{
+ static struct ipaddr a = {};
+ return (0 == memcmp(&a, ip, sizeof(struct ipaddr)));
+}
+
+#ifdef __cplusplus
+}
+#endif
+
#endif /* __IPADDR_H__ */