mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-11-18 09:08:42 +00:00
333 lines
9.6 KiB
C
333 lines
9.6 KiB
C
/*
|
|
* BIRD Internet Routing Daemon -- Network addresses
|
|
*
|
|
* (c) 2015 Ondrej Zajicek <santiago@crfreenet.org>
|
|
* (c) 2015 CZ.NIC z.s.p.o.
|
|
*
|
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
|
*/
|
|
|
|
#ifndef _BIRD_NET_H_
|
|
#define _BIRD_NET_H_
|
|
|
|
#include "lib/ip.h"
|
|
|
|
|
|
#define NET_IP4 1
|
|
#define NET_IP6 2
|
|
#define NET_VPN4 3
|
|
#define NET_VPN6 4
|
|
#define NET_ROA4 5
|
|
#define NET_ROA6 6
|
|
#define NET_MAX 7
|
|
|
|
typedef struct net_addr {
|
|
u8 type;
|
|
u8 pxlen;
|
|
u16 length;
|
|
u8 data[16];
|
|
u64 align[0];
|
|
} net_addr;
|
|
|
|
typedef struct net_addr_ip4 {
|
|
u8 type;
|
|
u8 pxlen;
|
|
u16 length;
|
|
ip4_addr prefix;
|
|
} net_addr_ip4;
|
|
|
|
typedef struct net_addr_ip6 {
|
|
u8 type;
|
|
u8 pxlen;
|
|
u16 length;
|
|
ip6_addr prefix;
|
|
} net_addr_ip6;
|
|
|
|
typedef struct net_addr_vpn4 {
|
|
u8 type;
|
|
u8 pxlen;
|
|
u16 length;
|
|
ip4_addr prefix;
|
|
u64 rd;
|
|
} net_addr_vpn4;
|
|
|
|
typedef struct net_addr_vpn6 {
|
|
u8 type;
|
|
u8 pxlen;
|
|
u16 length;
|
|
ip6_addr prefix;
|
|
u64 rd;
|
|
} net_addr_vpn6;
|
|
|
|
typedef struct net_addr_roa4 {
|
|
u8 type;
|
|
u8 pxlen;
|
|
u16 length;
|
|
ip4_addr prefix;
|
|
u32 max_pxlen;
|
|
u32 asn;
|
|
} net_addr_roa4;
|
|
|
|
typedef struct net_addr_roa6 {
|
|
u8 type;
|
|
u8 pxlen;
|
|
u16 length;
|
|
ip6_addr prefix;
|
|
u32 max_pxlen;
|
|
u32 asn;
|
|
} net_addr_roa6;
|
|
|
|
typedef union net_addr_union {
|
|
net_addr n;
|
|
net_addr_ip4 ip4;
|
|
net_addr_ip6 ip6;
|
|
net_addr_vpn4 vpn4;
|
|
net_addr_vpn6 vpn6;
|
|
net_addr_roa4 roa4;
|
|
net_addr_roa6 roa6;
|
|
} net_addr_union;
|
|
|
|
|
|
extern const u16 net_addr_length[];
|
|
extern const u8 net_max_prefix_length[];
|
|
extern const u16 net_max_text_length[];
|
|
|
|
#define NET_MAX_TEXT_LENGTH 65
|
|
|
|
|
|
#define NET_ADDR_IP4(prefix,pxlen) \
|
|
((net_addr_ip4) { NET_IP4, pxlen, sizeof(net_addr_ip4), prefix })
|
|
|
|
#define NET_ADDR_IP6(prefix,pxlen) \
|
|
((net_addr_ip6) { NET_IP6, pxlen, sizeof(net_addr_ip6), prefix })
|
|
|
|
#define NET_ADDR_VPN4(prefix,pxlen,rd) \
|
|
((net_addr_vpn4) { NET_VPN4, pxlen, sizeof(net_addr_vpn4), prefix, rd })
|
|
|
|
#define NET_ADDR_VPN6(prefix,pxlen,rd) \
|
|
((net_addr_vpn6) { NET_VPN6, pxlen, sizeof(net_addr_vpn6), prefix, rd })
|
|
|
|
#define NET_ADDR_ROA4(prefix,pxlen,max_pxlen,asn) \
|
|
((net_addr_roa4) { NET_ROA4, pxlen, sizeof(net_addr_roa4), prefix, max_pxlen, asn })
|
|
|
|
#define NET_ADDR_ROA6(prefix,pxlen,max_pxlen,asn) \
|
|
((net_addr_roa6) { NET_ROA6, pxlen, sizeof(net_addr_roa6), prefix, max_pxlen, asn })
|
|
|
|
|
|
|
|
static inline void net_fill_ip4(net_addr *a, ip4_addr prefix, uint pxlen)
|
|
{ *(net_addr_ip4 *)a = NET_ADDR_IP4(prefix, pxlen); }
|
|
|
|
static inline void net_fill_ip6(net_addr *a, ip6_addr prefix, uint pxlen)
|
|
{ *(net_addr_ip6 *)a = NET_ADDR_IP6(prefix, pxlen); }
|
|
|
|
static inline void net_fill_vpn4(net_addr *a, ip4_addr prefix, uint pxlen, u64 rd)
|
|
{ *(net_addr_vpn4 *)a = NET_ADDR_VPN4(prefix, pxlen, rd); }
|
|
|
|
static inline void net_fill_vpn6(net_addr *a, ip6_addr prefix, uint pxlen, u64 rd)
|
|
{ *(net_addr_vpn6 *)a = NET_ADDR_VPN6(prefix, pxlen, rd); }
|
|
|
|
static inline void net_fill_roa4(net_addr *a, ip4_addr prefix, uint pxlen, uint max_pxlen, u32 asn)
|
|
{ *(net_addr_roa4 *)a = NET_ADDR_ROA4(prefix, pxlen, max_pxlen, asn); }
|
|
|
|
static inline void net_fill_roa6(net_addr *a, ip6_addr prefix, uint pxlen, uint max_pxlen, u32 asn)
|
|
{ *(net_addr_roa6 *)a = NET_ADDR_ROA6(prefix, pxlen, max_pxlen, asn); }
|
|
|
|
static inline void net_fill_ipa(net_addr *a, ip_addr prefix, uint pxlen)
|
|
{
|
|
if (ipa_is_ip4(prefix))
|
|
net_fill_ip4(a, ipa_to_ip4(prefix), pxlen);
|
|
else
|
|
net_fill_ip6(a, ipa_to_ip6(prefix), pxlen);
|
|
}
|
|
|
|
static inline void net_fill_ip_host(net_addr *a, ip_addr prefix)
|
|
{
|
|
if (ipa_is_ip4(prefix))
|
|
net_fill_ip4(a, ipa_to_ip4(prefix), IP4_MAX_PREFIX_LENGTH);
|
|
else
|
|
net_fill_ip6(a, ipa_to_ip6(prefix), IP6_MAX_PREFIX_LENGTH);
|
|
}
|
|
|
|
static inline int net_is_ip(const net_addr *a)
|
|
{ return (a->type == NET_IP4) || (a->type == NET_IP6); }
|
|
|
|
|
|
static inline ip4_addr net4_prefix(const net_addr *a)
|
|
{ return ((net_addr_ip4 *) a)->prefix; }
|
|
|
|
static inline ip6_addr net6_prefix(const net_addr *a)
|
|
{ return ((net_addr_ip6 *) a)->prefix; }
|
|
|
|
static inline ip_addr net_prefix(const net_addr *a)
|
|
{
|
|
switch (a->type)
|
|
{
|
|
case NET_IP4:
|
|
case NET_VPN4:
|
|
case NET_ROA4:
|
|
return ipa_from_ip4(net4_prefix(a));
|
|
|
|
case NET_IP6:
|
|
case NET_VPN6:
|
|
case NET_ROA6:
|
|
return ipa_from_ip6(net6_prefix(a));
|
|
|
|
default:
|
|
return IPA_NONE;
|
|
}
|
|
}
|
|
|
|
static inline uint net4_pxlen(const net_addr *a)
|
|
{ return a->pxlen; }
|
|
|
|
static inline uint net6_pxlen(const net_addr *a)
|
|
{ return a->pxlen; }
|
|
|
|
static inline uint net_pxlen(const net_addr *a)
|
|
{ return a->pxlen; }
|
|
|
|
ip_addr net_pxmask(const net_addr *a);
|
|
|
|
|
|
static inline int net_equal(const net_addr *a, const net_addr *b)
|
|
{ return (a->length == b->length) && !memcmp(a, b, a->length); }
|
|
|
|
static inline int net_equal_ip4(const net_addr_ip4 *a, const net_addr_ip4 *b)
|
|
{ return !memcmp(a, b, sizeof(net_addr_ip4)); }
|
|
|
|
static inline int net_equal_ip6(const net_addr_ip6 *a, const net_addr_ip6 *b)
|
|
{ return !memcmp(a, b, sizeof(net_addr_ip6)); }
|
|
|
|
static inline int net_equal_vpn4(const net_addr_vpn4 *a, const net_addr_vpn4 *b)
|
|
{ return !memcmp(a, b, sizeof(net_addr_vpn4)); }
|
|
|
|
static inline int net_equal_vpn6(const net_addr_vpn6 *a, const net_addr_vpn6 *b)
|
|
{ return !memcmp(a, b, sizeof(net_addr_vpn6)); }
|
|
|
|
static inline int net_equal_roa4(const net_addr_roa4 *a, const net_addr_roa4 *b)
|
|
{ return !memcmp(a, b, sizeof(net_addr_roa4)); }
|
|
|
|
static inline int net_equal_roa6(const net_addr_roa6 *a, const net_addr_roa6 *b)
|
|
{ return !memcmp(a, b, sizeof(net_addr_roa6)); }
|
|
|
|
|
|
static inline int net_zero_ip4(const net_addr_ip4 *a)
|
|
{ return !a->pxlen && ip4_zero(a->prefix); }
|
|
|
|
static inline int net_zero_ip6(const net_addr_ip6 *a)
|
|
{ return !a->pxlen && ip6_zero(a->prefix); }
|
|
|
|
static inline int net_zero_vpn4(const net_addr_vpn4 *a)
|
|
{ return !a->pxlen && ip4_zero(a->prefix) && !a->rd; }
|
|
|
|
static inline int net_zero_vpn6(const net_addr_vpn6 *a)
|
|
{ return !a->pxlen && ip6_zero(a->prefix) && !a->rd; }
|
|
|
|
static inline int net_zero_roa4(const net_addr_roa4 *a)
|
|
{ return !a->pxlen && ip4_zero(a->prefix) && !a->max_pxlen && !a->asn; }
|
|
|
|
static inline int net_zero_roa6(const net_addr_roa6 *a)
|
|
{ return !a->pxlen && ip6_zero(a->prefix) && !a->max_pxlen && !a->asn; }
|
|
|
|
|
|
static inline int net_compare_ip4(const net_addr_ip4 *a, const net_addr_ip4 *b)
|
|
{ return ip4_compare(a->prefix, b->prefix) ?: uint_cmp(a->pxlen, b->pxlen); }
|
|
|
|
static inline int net_compare_ip6(const net_addr_ip6 *a, const net_addr_ip6 *b)
|
|
{ return ip6_compare(a->prefix, b->prefix) ?: uint_cmp(a->pxlen, b->pxlen); }
|
|
|
|
static inline int net_compare_vpn4(const net_addr_vpn4 *a, const net_addr_vpn4 *b)
|
|
{ return u64_cmp(a->rd, b->rd) ?: ip4_compare(a->prefix, b->prefix) ?: uint_cmp(a->pxlen, b->pxlen); }
|
|
|
|
static inline int net_compare_vpn6(const net_addr_vpn6 *a, const net_addr_vpn6 *b)
|
|
{ return u64_cmp(a->rd, b->rd) ?: ip6_compare(a->prefix, b->prefix) ?: uint_cmp(a->pxlen, b->pxlen); }
|
|
|
|
static inline int net_compare_roa4(const net_addr_roa4 *a, const net_addr_roa4 *b)
|
|
{ return ip4_compare(a->prefix, b->prefix) ?: uint_cmp(a->pxlen, b->pxlen) ?: uint_cmp(a->max_pxlen, b->max_pxlen) ?: uint_cmp(a->asn, b->asn); }
|
|
|
|
static inline int net_compare_roa6(const net_addr_roa6 *a, const net_addr_roa6 *b)
|
|
{ return ip6_compare(a->prefix, b->prefix) ?: uint_cmp(a->pxlen, b->pxlen) ?: uint_cmp(a->max_pxlen, b->max_pxlen) ?: uint_cmp(a->asn, b->asn); }
|
|
|
|
int net_compare(const net_addr *a, const net_addr *b);
|
|
|
|
|
|
static inline void net_copy(net_addr *dst, const net_addr *src)
|
|
{ memcpy(dst, src, src->length); }
|
|
|
|
static inline void net_copy_ip4(net_addr_ip4 *dst, const net_addr_ip4 *src)
|
|
{ memcpy(dst, src, sizeof(net_addr_ip4)); }
|
|
|
|
static inline void net_copy_ip6(net_addr_ip6 *dst, const net_addr_ip6 *src)
|
|
{ memcpy(dst, src, sizeof(net_addr_ip6)); }
|
|
|
|
static inline void net_copy_vpn4(net_addr_vpn4 *dst, const net_addr_vpn4 *src)
|
|
{ memcpy(dst, src, sizeof(net_addr_vpn4)); }
|
|
|
|
static inline void net_copy_vpn6(net_addr_vpn6 *dst, const net_addr_vpn6 *src)
|
|
{ memcpy(dst, src, sizeof(net_addr_vpn6)); }
|
|
|
|
static inline void net_copy_roa4(net_addr_roa4 *dst, const net_addr_roa4 *src)
|
|
{ memcpy(dst, src, sizeof(net_addr_roa4)); }
|
|
|
|
static inline void net_copy_roa6(net_addr_roa6 *dst, const net_addr_roa6 *src)
|
|
{ memcpy(dst, src, sizeof(net_addr_roa6)); }
|
|
|
|
|
|
static inline u32 net_hash_ip4(const net_addr_ip4 *n)
|
|
{ return ip4_hash(n->prefix) ^ ((u32) n->pxlen << 26); }
|
|
|
|
static inline u32 net_hash_ip6(const net_addr_ip6 *n)
|
|
{ return ip6_hash(n->prefix) ^ ((u32) n->pxlen << 26); }
|
|
|
|
/* XXXX */
|
|
static inline u32 u64_hash(u64 a)
|
|
{ return u32_hash(a); }
|
|
|
|
static inline u32 net_hash_vpn4(const net_addr_vpn4 *n)
|
|
{ return ip4_hash(n->prefix) ^ ((u32) n->pxlen << 26) ^ u64_hash(n->rd); }
|
|
|
|
static inline u32 net_hash_vpn6(const net_addr_vpn6 *n)
|
|
{ return ip6_hash(n->prefix) ^ ((u32) n->pxlen << 26) ^ u64_hash(n->rd); }
|
|
|
|
static inline u32 net_hash_roa4(const net_addr_roa4 *n)
|
|
{ return ip4_hash(n->prefix) ^ ((u32) n->pxlen << 26); }
|
|
|
|
static inline u32 net_hash_roa6(const net_addr_roa6 *n)
|
|
{ return ip6_hash(n->prefix) ^ ((u32) n->pxlen << 26); }
|
|
|
|
|
|
static inline int net_validate_ip4(const net_addr_ip4 *n)
|
|
{
|
|
return (n->pxlen <= IP4_MAX_PREFIX_LENGTH) &&
|
|
ip4_zero(ip4_and(n->prefix, ip4_not(ip4_mkmask(n->pxlen))));
|
|
}
|
|
|
|
static inline int net_validate_ip6(const net_addr_ip6 *n)
|
|
{
|
|
return (n->pxlen <= IP6_MAX_PREFIX_LENGTH) &&
|
|
ip6_zero(ip6_and(n->prefix, ip6_not(ip6_mkmask(n->pxlen))));
|
|
}
|
|
|
|
int net_validate(const net_addr *N);
|
|
|
|
|
|
static inline void net_normalize_ip4(net_addr_ip4 *n)
|
|
{ n->prefix = ip4_and(n->prefix, ip4_mkmask(n->pxlen)); }
|
|
|
|
static inline void net_normalize_ip6(net_addr_ip6 *n)
|
|
{ n->prefix = ip6_and(n->prefix, ip6_mkmask(n->pxlen)); }
|
|
|
|
void net_normalize(net_addr *N);
|
|
|
|
|
|
int net_classify(const net_addr *N);
|
|
int net_format(const net_addr *N, char *buf, int buflen);
|
|
|
|
|
|
int ipa_in_netX(const ip_addr A, const net_addr *N);
|
|
int net_in_netX(const net_addr *A, const net_addr *N);
|
|
|
|
|
|
#endif
|