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BGP Extended communities.

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This commit is contained in:
Ondrej Zajicek
2011-08-12 21:03:43 +02:00
parent bde872bba7
commit 42a0c05408
14 changed files with 793 additions and 110 deletions
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48
nest/attrs.h
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@@ -50,12 +50,52 @@ int as_path_match(struct adata *path, struct f_path_mask *mask);
/* a-set.c */
int int_set_format(struct adata *set, int way, int from, byte *buf, unsigned int size);
struct adata *int_set_add(struct linpool *pool, struct adata *list, u32 val);
int int_set_contains(struct adata *list, u32 val);
struct adata *int_set_del(struct linpool *pool, struct adata *list, u32 val);
/* Extended Community subtypes (kinds) */
#define EC_RT 0x0002
#define EC_RO 0x0003
#define EC_GENERIC 0xFFFF
/* Transitive bit (for first u32 half of EC) */
#define EC_TBIT 0x40000000
static inline int int_set_get_size(struct adata *list)
{ return list->length / 4; }
static inline u32 *int_set_get_data(struct adata *list)
{ return (u32 *) list->data; }
static inline u32 ec_hi(u64 ec) { return ec >> 32; }
static inline u32 ec_lo(u64 ec) { return ec; }
static inline u64 ec_get(const u32 *l, int i)
{ return (((u64) l[i]) << 32) | l[i+1]; }
/* RFC 4360 3.1. Two-Octet AS Specific Extended Community */
static inline u64 ec_as2(u64 kind, u64 key, u64 val)
{ return ((kind | 0x0000) << 48) | (key << 32) | val; }
/* RFC 5668 4-Octet AS Specific BGP Extended Community */
static inline u64 ec_as4(u64 kind, u64 key, u64 val)
{ return ((kind | 0x0200) << 48) | (key << 16) | val; }
/* RFC 4360 3.2. IPv4 Address Specific Extended Community */
static inline u64 ec_ip4(u64 kind, u64 key, u64 val)
{ return ((kind | 0x0100) << 48) | (key << 16) | val; }
static inline u64 ec_generic(u64 key, u64 val)
{ return (key << 32) | val; }
int int_set_format(struct adata *set, int way, int from, byte *buf, unsigned int size);
int ec_format(byte *buf, u64 ec);
int ec_set_format(struct adata *set, int from, byte *buf, unsigned int size);
int int_set_contains(struct adata *list, u32 val);
int ec_set_contains(struct adata *list, u64 val);
struct adata *int_set_add(struct linpool *pool, struct adata *list, u32 val);
struct adata *ec_set_add(struct linpool *pool, struct adata *list, u64 val);
struct adata *int_set_del(struct linpool *pool, struct adata *list, u32 val);
struct adata *ec_set_del(struct linpool *pool, struct adata *list, u64 val);
#endif