fib_attached_export.c File Reference

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Data Structures
struct	fib_ae_import_t_
	A description of the need to import routes from the export table. More...
struct	fib_ae_export_t_
	A description of the need to export routes to one or more export tables. More...

Typedefs
typedef struct fib_ae_import_t_	fib_ae_import_t
	A description of the need to import routes from the export table. More...
typedef struct fib_ae_export_t_	fib_ae_export_t
	A description of the need to export routes to one or more export tables. More...

Functions
static fib_ae_export_t *	fib_entry_ae_add_or_lock (fib_node_index_t connected)
static void	fib_entry_import_remove (fib_ae_import_t *import, fib_node_index_t entry_index)
static void	fib_entry_import_add (fib_ae_import_t *import, fib_node_index_t entry_index)
static int	fib_entry_covered_walk_import (fib_entry_t *cover, fib_node_index_t covered, void *ctx)
	Call back when walking a connected prefix's covered prefixes for import. More...
static void	fib_ae_export_import_add (fib_ae_export_t *export, fib_ae_import_t *import)
void	fib_attached_export_import (fib_entry_t *fib_entry, fib_node_index_t export_fib)
	FIB attached export. More...
void	fib_attached_export_purge (fib_entry_t *fib_entry)
	All the imported entries need to be purged. More...
void	fib_attached_export_covered_added (fib_entry_t *cover, fib_node_index_t covered)
void	fib_attached_export_covered_removed (fib_entry_t *cover, fib_node_index_t covered)
static void	fib_attached_export_cover_modified_i (fib_entry_t *fib_entry)
void	fib_attached_export_cover_change (fib_entry_t *fib_entry)
	If this entry is tracking a cover (in another table) then that cover has changed. More...
void	fib_attached_export_cover_update (fib_entry_t *fib_entry)
	If this entry is tracking a cover (in another table) then that cover has been updated. More...
u8 *	fib_ae_import_format (fib_node_index_t impi, u8 *s)
u8 *	fib_ae_export_format (fib_node_index_t expi, u8 *s)

Variables
static fib_ae_import_t *	fib_ae_import_pool
static fib_ae_export_t *	fib_ae_export_pool

Typedef Documentation

typedef struct fib_ae_export_t_ fib_ae_export_t

A description of the need to export routes to one or more export tables.

typedef struct fib_ae_import_t_ fib_ae_import_t

A description of the need to import routes from the export table.

Function Documentation

u8* fib_ae_export_format	(	fib_node_index_t	expi,
		u8 *	s
	)

Definition at line 540 of file fib_attached_export.c.

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static void fib_ae_export_import_add ( fib_ae_export_t *  export, fib_ae_import_t *  import  )

static

Definition at line 226 of file fib_attached_export.c.

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u8* fib_ae_import_format	(	fib_node_index_t	impi,
		u8 *	s
	)

Definition at line 511 of file fib_attached_export.c.

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void fib_attached_export_cover_change

(

fib_entry_t *

fib_entry

)

If this entry is tracking a cover (in another table) then that cover has changed.

re-evaluate import.

Definition at line 495 of file fib_attached_export.c.

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static void fib_attached_export_cover_modified_i ( fib_entry_t *  fib_entry )

static

Definition at line 462 of file fib_attached_export.c.

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void fib_attached_export_cover_update

(

fib_entry_t *

fib_entry

)

If this entry is tracking a cover (in another table) then that cover has been updated.

re-evaluate import.

Definition at line 505 of file fib_attached_export.c.

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void fib_attached_export_covered_added	(	fib_entry_t *	cover,
		fib_node_index_t	covered
	)

Definition at line 398 of file fib_attached_export.c.

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void fib_attached_export_covered_removed	(	fib_entry_t *	cover,
		fib_node_index_t	covered
	)

Definition at line 430 of file fib_attached_export.c.

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void fib_attached_export_import	(	fib_entry_t *	fib_entry,
		fib_node_index_t	export_fib
	)

FIB attached export.

what's it all about? say one does this: set int ip table Gig0 2 set int ip addr Gig0 10.0.0.1/24 Ggi0 is in table 2 with a connected address. Now we add a routing matching said connected in a different table ip route add table 3 10.0.0.0/24 via Gig0 How do we expect traffic in table 3 to be forwarded? Clearly out of Ggi0. It's an attached route, hence we are saying that we can ARP for hosts in the attached subnet. and we can. but any ARP entries we send we be received on Gig0, but since Gig0 is in table 2, it will install the adj-fins in table 2. So traffic in table 3 will never hit an adj-fib and hence always the glean, and so thus be effectively dropped. How do we fix this? Attached Export !! All more specfiic entries in table 2 that track and are covered by the connected are automatically exported into table 3. Now table 3 also has adj-fibs (and the local) so traffic to hosts is restored.

Definition at line 240 of file fib_attached_export.c.

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void fib_attached_export_purge

(

fib_entry_t *

fib_entry

)

All the imported entries need to be purged.

Definition at line 316 of file fib_attached_export.c.

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static fib_ae_export_t* fib_entry_ae_add_or_lock ( fib_node_index_t  connected )

static

Definition at line 95 of file fib_attached_export.c.

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static int fib_entry_covered_walk_import ( fib_entry_t *  cover, fib_node_index_t  covered, void *  ctx  )

static

Call back when walking a connected prefix's covered prefixes for import.

Definition at line 209 of file fib_attached_export.c.

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static void fib_entry_import_add ( fib_ae_import_t *  import, fib_node_index_t  entry_index  )

static

Definition at line 151 of file fib_attached_export.c.

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static void fib_entry_import_remove ( fib_ae_import_t *  import, fib_node_index_t  entry_index  )

static

Definition at line 126 of file fib_attached_export.c.

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Variable Documentation

fib_ae_export_t* fib_ae_export_pool

static

Definition at line 92 of file fib_attached_export.c.

fib_ae_import_t* fib_ae_import_pool

static

Definition at line 91 of file fib_attached_export.c.