ip4_fib.h File Reference

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Data Structures
struct	ip4_fib_t_
	The IPv4 FIB. More...

Typedefs
typedef struct ip4_fib_t_	ip4_fib_t
	The IPv4 FIB. More...

Functions
fib_node_index_t	ip4_fib_table_lookup (const ip4_fib_t *fib, const ip4_address_t *addr, u32 len)
fib_node_index_t	ip4_fib_table_lookup_exact_match (const ip4_fib_t *fib, const ip4_address_t *addr, u32 len)
void	ip4_fib_table_entry_remove (ip4_fib_t *fib, const ip4_address_t *addr, u32 len)
void	ip4_fib_table_entry_insert (ip4_fib_t *fib, const ip4_address_t *addr, u32 len, fib_node_index_t fib_entry_index)
void	ip4_fib_table_destroy (u32 fib_index)
void	ip4_fib_table_fwding_dpo_update (ip4_fib_t *fib, const ip4_address_t *addr, u32 len, const dpo_id_t *dpo)
void	ip4_fib_table_fwding_dpo_remove (ip4_fib_t *fib, const ip4_address_t *addr, u32 len, const dpo_id_t *dpo, fib_node_index_t cover_index)
u32	ip4_fib_table_lookup_lb (ip4_fib_t *fib, const ip4_address_t *dst)
void	ip4_fib_table_walk (ip4_fib_t *fib, fib_table_walk_fn_t fn, void *ctx)
	Walk all entries in a FIB table N.B: This is NOT safe to deletes. More...
void	ip4_fib_table_sub_tree_walk (ip4_fib_t *fib, const fib_prefix_t *root, fib_table_walk_fn_t fn, void *ctx)
	Walk all entries in a sub-tree of the FIB table N.B: This is NOT safe to deletes. More...
static ip4_fib_t *	ip4_fib_get (u32 index)
	Get the FIB at the given index. More...
static u32	ip4_fib_lookup (ip4_main_t *im, u32 sw_if_index, ip4_address_t *dst)
u32	ip4_fib_table_find_or_create_and_lock (u32 table_id, fib_source_t src)
	Get or create an IPv4 fib. More...
u32	ip4_fib_table_create_and_lock (fib_source_t src)
u8 *	format_ip4_fib_table_memory (u8 *s, va_list *args)
static u32	ip4_fib_index_from_table_id (u32 table_id)
u32	ip4_fib_table_get_index_for_sw_if_index (u32 sw_if_index)
static index_t	ip4_fib_forwarding_lookup (u32 fib_index, const ip4_address_t *addr)

Typedef Documentation

ip4_fib_t

typedef struct ip4_fib_t_ ip4_fib_t

The IPv4 FIB.

FIBs are composed of two prefix data-bases (akak tables). The non-forwarding table contains all the routes that the control plane has programmed, the forwarding table contains the sub-set of those routes that can be used to forward packets. In the IPv4 FIB the non-forwarding table is an array of hash tables indexed by mask length, the forwarding table is an mtrie

This IPv4 FIB is used by the protocol independent FIB. So directly using this APIs in client code is not encouraged. However, this IPv4 FIB can be used if all the client wants is an IPv4 prefix data-base

Function Documentation

format_ip4_fib_table_memory()

u8* format_ip4_fib_table_memory	(	u8 *	s,
		va_list *	args
	)

Definition at line 566 of file ip4_fib.c.

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ip4_fib_forwarding_lookup()

static index_t ip4_fib_forwarding_lookup ( u32  fib_index, const ip4_address_t *  addr  )

inlinestatic

Definition at line 160 of file ip4_fib.h.

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ip4_fib_get()

static ip4_fib_t* ip4_fib_get ( u32  index )

inlinestatic

Get the FIB at the given index.

Definition at line 113 of file ip4_fib.h.

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ip4_fib_index_from_table_id()

static u32 ip4_fib_index_from_table_id ( u32  table_id )

inlinestatic

Definition at line 145 of file ip4_fib.h.

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ip4_fib_lookup()

static u32 ip4_fib_lookup ( ip4_main_t *  im, u32  sw_if_index, ip4_address_t *  dst  )

inlinestatic

Definition at line 119 of file ip4_fib.h.

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ip4_fib_table_create_and_lock()

u32 ip4_fib_table_create_and_lock

(

fib_source_t

src

)

Definition at line 218 of file ip4_fib.c.

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ip4_fib_table_destroy()

void ip4_fib_table_destroy

(

u32

fib_index

)

Definition at line 159 of file ip4_fib.c.

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ip4_fib_table_entry_insert()

void ip4_fib_table_entry_insert	(	ip4_fib_t *	fib,
		const ip4_address_t *	addr,
		u32	len,
		fib_node_index_t	fib_entry_index
	)

Definition at line 314 of file ip4_fib.c.

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ip4_fib_table_entry_remove()

void ip4_fib_table_entry_remove	(	ip4_fib_t *	fib,
		const ip4_address_t *	addr,
		u32	len
	)

Definition at line 349 of file ip4_fib.c.

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ip4_fib_table_find_or_create_and_lock()

u32 ip4_fib_table_find_or_create_and_lock	(	u32	table_id,
		fib_source_t	src
	)

Get or create an IPv4 fib.

Get or create an IPv4 fib with the provided table ID.

Parameters

table_id

When set to ~0, an arbitrary and unused fib ID is picked and can be retrieved with ret->table_id. Otherwise, the fib ID to be used to retrieve or create the desired fib.

Returns

A pointer to the retrieved or created fib.

Definition at line 203 of file ip4_fib.c.

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ip4_fib_table_fwding_dpo_remove()

void ip4_fib_table_fwding_dpo_remove	(	ip4_fib_t *	fib,
		const ip4_address_t *	addr,
		u32	len,
		const dpo_id_t *	dpo,
		fib_node_index_t	cover_index
	)

Definition at line 388 of file ip4_fib.c.

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ip4_fib_table_fwding_dpo_update()

void ip4_fib_table_fwding_dpo_update	(	ip4_fib_t *	fib,
		const ip4_address_t *	addr,
		u32	len,
		const dpo_id_t *	dpo
	)

Definition at line 379 of file ip4_fib.c.

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ip4_fib_table_get_index_for_sw_if_index()

u32 ip4_fib_table_get_index_for_sw_if_index

(

u32

sw_if_index

)

Definition at line 224 of file ip4_fib.c.

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ip4_fib_table_lookup()

fib_node_index_t ip4_fib_table_lookup	(	const ip4_fib_t *	fib,
		const ip4_address_t *	addr,
		u32	len
	)

Definition at line 291 of file ip4_fib.c.

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ip4_fib_table_lookup_exact_match()

fib_node_index_t ip4_fib_table_lookup_exact_match	(	const ip4_fib_t *	fib,
		const ip4_address_t *	addr,
		u32	len
	)

Definition at line 243 of file ip4_fib.c.

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ip4_fib_table_lookup_lb()

u32 ip4_fib_table_lookup_lb	(	ip4_fib_t *	fib,
		const ip4_address_t *	dst
	)

Definition at line 267 of file ip4_fib.c.

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ip4_fib_table_sub_tree_walk()

void ip4_fib_table_sub_tree_walk	(	ip4_fib_t *	fib,
		const fib_prefix_t *	root,
		fib_table_walk_fn_t	fn,
		void *	ctx
	)

Walk all entries in a sub-tree of the FIB table N.B: This is NOT safe to deletes.

If you need to delete walk the whole table and store elements in a vector, then delete the elements

Definition at line 429 of file ip4_fib.c.

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ip4_fib_table_walk()

void ip4_fib_table_walk	(	ip4_fib_t *	fib,
		fib_table_walk_fn_t	fn,
		void *	ctx
	)

Walk all entries in a FIB table N.B: This is NOT safe to deletes.

If you need to delete walk the whole table and store elements in a vector, then delete the elements

Definition at line 412 of file ip4_fib.c.

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