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MPLS: added net_addr_mpls variant of net_addr

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This commit is contained in:
Jan Moskyto Matejka 2016-03-02 14:37:18 +01:00
parent ec5e5d23fa
commit 33ad6e0188
2 changed files with 56 additions and 5 deletions
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26
lib/net.c
View file

@ -13,7 +13,8 @@ const char * const net_label[] = {
[NET_ROA4] = "roa4",
[NET_ROA6] = "roa6",
[NET_FLOW4] = "flow4",
[NET_FLOW6] = "flow6"
[NET_FLOW6] = "flow6",
[NET_MPLS] = "mpls",
};
const u16 net_addr_length[] = {
@ -24,7 +25,8 @@ const u16 net_addr_length[] = {
[NET_ROA4] = sizeof(net_addr_roa4),
[NET_ROA6] = sizeof(net_addr_roa6),
[NET_FLOW4] = 0,
[NET_FLOW6] = 0
[NET_FLOW6] = 0,
[NET_MPLS] = sizeof(net_addr_mpls),
};
const u8 net_max_prefix_length[] = {
@ -35,7 +37,8 @@ const u8 net_max_prefix_length[] = {
[NET_ROA4] = IP4_MAX_PREFIX_LENGTH,
[NET_ROA6] = IP6_MAX_PREFIX_LENGTH,
[NET_FLOW4] = IP4_MAX_PREFIX_LENGTH,
[NET_FLOW6] = IP6_MAX_PREFIX_LENGTH
[NET_FLOW6] = IP6_MAX_PREFIX_LENGTH,
[NET_MPLS] = 0,
};
const u16 net_max_text_length[] = {
@ -46,7 +49,8 @@ const u16 net_max_text_length[] = {
[NET_ROA4] = 34, /* "255.255.255.255/32-32 AS4294967295" */
[NET_ROA6] = 60, /* "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff/128-128 AS4294967295" */
[NET_FLOW4] = 0, /* "flow4 { ... }" */
[NET_FLOW6] = 0 /* "flow6 { ... }" */
[NET_FLOW6] = 0, /* "flow6 { ... }" */
[NET_MPLS] = 7, /* "1048575" */
};
@ -73,6 +77,8 @@ net_format(const net_addr *N, char *buf, int buflen)
return flow4_net_format(buf, buflen, &n->flow4);
case NET_FLOW6:
return flow6_net_format(buf, buflen, &n->flow6);
case NET_MPLS:
return bsnprintf(buf, buflen, "%u", n->mpls.label);
}
return 0;
@ -95,6 +101,7 @@ net_pxmask(const net_addr *a)
case NET_FLOW6:
return ipa_from_ip6(ip6_mkmask(net6_pxlen(a)));
case NET_MPLS:
default:
return IPA_NONE;
}
@ -124,6 +131,8 @@ net_compare(const net_addr *a, const net_addr *b)
return net_compare_flow4((const net_addr_flow4 *) a, (const net_addr_flow4 *) b);
case NET_FLOW6:
return net_compare_flow6((const net_addr_flow6 *) a, (const net_addr_flow6 *) b);
case NET_MPLS:
return net_compare_mpls((const net_addr_mpls *) a, (const net_addr_mpls *) b);
}
return 0;
}
@ -165,6 +174,9 @@ net_validate(const net_addr *N)
case NET_FLOW6:
return net_validate_ip6((net_addr_ip6 *) N);
case NET_MPLS:
return net_validate_mpls((net_addr_mpls *) N);
default:
return 0;
}
@ -188,6 +200,9 @@ net_normalize(net_addr *N)
case NET_ROA6:
case NET_FLOW6:
return net_normalize_ip6(&n->ip6);
case NET_MPLS:
return;
}
}
@ -209,6 +224,8 @@ net_classify(const net_addr *N)
case NET_ROA6:
case NET_FLOW6:
return ip6_zero(n->ip6.prefix) ? (IADDR_HOST | SCOPE_UNIVERSE) : ip6_classify(&n->ip6.prefix);
/* classify probably not needed for NET_MPLS */
}
return IADDR_INVALID;
@ -235,6 +252,7 @@ ipa_in_netX(const ip_addr a, const net_addr *n)
return ip6_zero(ip6_and(ip6_xor(ipa_to_ip6(a), net6_prefix(n)),
ip6_mkmask(net6_pxlen(n))));
case NET_MPLS:
default:
return 0;
}

35
lib/net.h
View file

@ -21,7 +21,8 @@
#define NET_ROA6 6
#define NET_FLOW4 7
#define NET_FLOW6 8
#define NET_MAX 9
#define NET_MPLS 9
#define NET_MAX 10
#define NB_IP4 (1 << NET_IP4)
#define NB_IP6 (1 << NET_IP6)
@ -31,6 +32,7 @@
#define NB_ROA6 (1 << NET_ROA6)
#define NB_FLOW4 (1 << NET_FLOW4)
#define NB_FLOW6 (1 << NET_FLOW6)
#define NB_MPLS (1 << NET_MPLS)
#define NB_IP (NB_IP4 | NB_IP6)
#define NB_ANY 0xffffffff
@ -108,6 +110,13 @@ typedef struct net_addr_flow6 {
byte data[0];
} net_addr_flow6;
typedef struct net_addr_mpls {
u8 type;
u8 pxlen;
u16 length;
u32 label;
} net_addr_mpls;
typedef union net_addr_union {
net_addr n;
net_addr_ip4 ip4;
@ -118,6 +127,7 @@ typedef union net_addr_union {
net_addr_roa6 roa6;
net_addr_flow4 flow4;
net_addr_flow6 flow6;
net_addr_mpls mpls;
} net_addr_union;
@ -153,6 +163,8 @@ extern const u16 net_max_text_length[];
#define NET_ADDR_FLOW6(prefix,pxlen,dlen) \
((net_addr_flow6) { NET_FLOW6, pxlen, sizeof(net_addr_ip6) + dlen, prefix })
#define NET_ADDR_MPLS(label) \
((net_addr_mpls) { NET_MPLS, 20, sizeof(net_addr_mpls), label })
static inline void net_fill_ip4(net_addr *a, ip4_addr prefix, uint pxlen)
@ -173,6 +185,9 @@ static inline void net_fill_roa4(net_addr *a, ip4_addr prefix, uint pxlen, uint
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_mpls(net_addr *a, u32 label)
{ *(net_addr_mpls *)a = NET_ADDR_MPLS(label); }
static inline void net_fill_ipa(net_addr *a, ip_addr prefix, uint pxlen)
{
if (ipa_is_ip4(prefix))
@ -238,6 +253,7 @@ static inline ip_addr net_prefix(const net_addr *a)
case NET_FLOW6:
return ipa_from_ip6(net6_prefix(a));
case NET_MPLS:
default:
return IPA_NONE;
}
@ -289,6 +305,8 @@ static inline int net_equal_prefix_roa4(const net_addr_roa4 *a, const net_addr_r
static inline int net_equal_prefix_roa6(const net_addr_roa6 *a, const net_addr_roa6 *b)
{ return ip6_equal(a->prefix, b->prefix) && (a->pxlen == b->pxlen); }
static inline int net_equal_mpls(const net_addr_mpls *a, const net_addr_mpls *b)
{ return !memcmp(a, b, sizeof(net_addr_mpls)); }
static inline int net_zero_ip4(const net_addr_ip4 *a)
{ return !a->pxlen && ip4_zero(a->prefix); }
@ -314,6 +332,8 @@ static inline int net_zero_flow4(const net_addr_flow4 *a)
static inline int net_zero_flow6(const net_addr_flow6 *a)
{ return !a->pxlen && ip6_zero(a->prefix) && !a->data; }
static inline int net_zero_mpls(const net_addr_mpls *a)
{ return !a->label; }
static inline int net_compare_ip4(const net_addr_ip4 *a, const net_addr_ip4 *b)
@ -340,6 +360,9 @@ static inline int net_compare_flow4(const net_addr_flow4 *a, const net_addr_flow
static inline int net_compare_flow6(const net_addr_flow6 *a, const net_addr_flow6 *b)
{ return ip6_compare(a->prefix, b->prefix) ?: uint_cmp(a->pxlen, b->pxlen) ?: uint_cmp(a->length, b->length) ?: memcmp(a->data, b->data, a->length - sizeof(net_addr_flow6)); }
static inline int net_compare_mpls(const net_addr_mpls *a, const net_addr_mpls *b)
{ return uint_cmp(a->label, b->label); }
int net_compare(const net_addr *a, const net_addr *b);
@ -370,6 +393,8 @@ static inline void net_copy_flow4(net_addr_flow4 *dst, const net_addr_flow4 *src
static inline void net_copy_flow6(net_addr_flow6 *dst, const net_addr_flow6 *src)
{ memcpy(dst, src, src->length); }
static inline void net_copy_mpls(net_addr_mpls *dst, const net_addr_mpls *src)
{ memcpy(dst, src, sizeof(net_addr_mpls)); }
static inline u32 net_hash_ip4(const net_addr_ip4 *n)
{ return ip4_hash(n->prefix) ^ ((u32) n->pxlen << 26); }
@ -399,6 +424,9 @@ static inline u32 net_hash_flow4(const net_addr_flow4 *n)
static inline u32 net_hash_flow6(const net_addr_flow6 *n)
{ return ip6_hash(n->prefix) ^ ((u32) n->pxlen << 26); }
static inline u32 net_hash_mpls(const net_addr_mpls *n)
{ return n->label; }
u32 net_hash(const net_addr *a);
@ -414,6 +442,11 @@ static inline int net_validate_ip6(const net_addr_ip6 *n)
ip6_zero(ip6_and(n->prefix, ip6_not(ip6_mkmask(n->pxlen))));
}
static inline int net_validate_mpls(const net_addr_mpls *n)
{
return n->label < (1<<20);
}
int net_validate(const net_addr *N);