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Filter: Add some minor functions for f_tree and EC

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Add some supportive functions for f_tree and EC. These functions are used
by L3VPN code.
This commit is contained in:
Ondrej Zajicek
2022-09-27 16:47:52 +02:00
parent da0b589e7b
commit 92a8565547
4 changed files with 25 additions and 3 deletions
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9
nest/attrs.h
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@@ -138,6 +138,11 @@ static inline const char *ec_subtype_str(const enum ec_subtype ecs) {
}
}
/* Check for EC_RT subtype within different types (0-2) */
static inline int ec_type_is_rt(uint type)
{ return (type == EC_RT) || (type == (0x0100 | EC_RT)) || (type == (0x0200 | EC_RT)); }
/* Transitive bit (for first u32 half of EC) */
#define EC_TBIT 0x40000000
@@ -157,9 +162,13 @@ static inline u32 *int_set_get_data(const struct adata *list)
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]; }
static inline void ec_put(u32 *l, int i, u64 val)
{ l[i] = ec_hi(val); l[i+1] = ec_lo(val); }
/* RFC 4360 3.1. Two-Octet AS Specific Extended Community */
static inline u64 ec_as2(enum ec_subtype kind, u64 key, u64 val)
{ return (((u64) kind | 0x0000) << 48) | (key << 32) | val; }