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Custom route attributes

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For local route marking purposes, local custom route attributes may be
defined. These attributes are seamlessly stripped after export filter to
every real protocol like Kernel, BGP or OSPF, they however pass through
pipes. We currently allow at most 256 custom attributes.

This should be much faster than currently used bgp communities
for marking routes.
This commit is contained in:
Maria Matejka
2018-11-21 20:37:11 +01:00
committed by Jan Maria Matejka
parent 0642fb4d45
commit 265419a369
9 changed files with 215 additions and 21 deletions
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9
nest/route.h
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@@ -471,13 +471,20 @@ typedef struct eattr {
} u;
} eattr;
#define EA_CODE(proto,id) (((proto) << 8) | (id))
#define EA_PROTO(ea) ((ea) >> 8)
#define EA_ID(ea) ((ea) & 0xff)
#define EA_PROTO(ea) ((ea) >> 8)
#define EA_CUSTOM(id) ((id) | EA_CUSTOM_BIT)
#define EA_IS_CUSTOM(ea) ((ea) & EA_CUSTOM_BIT)
#define EA_CUSTOM_ID(ea) ((ea) & ~EA_CUSTOM_BIT)
const char *ea_custom_name(uint ea);
#define EA_GEN_IGP_METRIC EA_CODE(PROTOCOL_NONE, 0)
#define EA_CODE_MASK 0xffff
#define EA_CUSTOM_BIT 0x8000
#define EA_ALLOW_UNDEF 0x10000 /* ea_find: allow EAF_TYPE_UNDEF */
#define EA_BIT(n) ((n) << 24) /* Used in bitfield accessors */