rte_fib6.h File Reference

#include <stdint.h>

Go to the source code of this file.

Data Structures
struct	rte_fib6_conf

Macros
#define	RTE_FIB6_MAXDEPTH   128

Typedefs
typedef int(*	rte_fib6_modify_fn_t) (struct rte_fib6 *fib, const uint8_t ip[RTE_FIB6_IPV6_ADDR_SIZE], uint8_t depth, uint64_t next_hop, int op)
typedef void(*	rte_fib6_lookup_fn_t) (void *fib, uint8_t ips[][RTE_FIB6_IPV6_ADDR_SIZE], uint64_t *next_hops, const unsigned int n)

Enumerations
enum	rte_fib6_type { RTE_FIB6_DUMMY, RTE_FIB6_TRIE }
enum	rte_fib_trie_nh_sz
enum	rte_fib6_lookup_type { RTE_FIB6_LOOKUP_DEFAULT, RTE_FIB6_LOOKUP_TRIE_SCALAR, RTE_FIB6_LOOKUP_TRIE_VECTOR_AVX512 }

Functions
struct rte_fib6 *	rte_fib6_create (const char *name, int socket_id, struct rte_fib6_conf *conf)
struct rte_fib6 *	rte_fib6_find_existing (const char *name)
void	rte_fib6_free (struct rte_fib6 *fib)
int	rte_fib6_add (struct rte_fib6 *fib, const uint8_t ip[RTE_FIB6_IPV6_ADDR_SIZE], uint8_t depth, uint64_t next_hop)
int	rte_fib6_delete (struct rte_fib6 *fib, const uint8_t ip[RTE_FIB6_IPV6_ADDR_SIZE], uint8_t depth)
int	rte_fib6_lookup_bulk (struct rte_fib6 *fib, uint8_t ips[][RTE_FIB6_IPV6_ADDR_SIZE], uint64_t *next_hops, int n)
void *	rte_fib6_get_dp (struct rte_fib6 *fib)
struct rte_rib6 *	rte_fib6_get_rib (struct rte_fib6 *fib)
int	rte_fib6_select_lookup (struct rte_fib6 *fib, enum rte_fib6_lookup_type type)

Detailed Description

RTE FIB6 library.

FIB (Forwarding information base) implementation for IPv6 Longest Prefix Match

Definition in file rte_fib6.h.

Macro Definition Documentation

RTE_FIB6_MAXDEPTH

#define RTE_FIB6_MAXDEPTH   128

Maximum depth value possible for IPv6 FIB.

Definition at line 27 of file rte_fib6.h.

Typedef Documentation

rte_fib6_modify_fn_t

typedef int(* rte_fib6_modify_fn_t) (struct rte_fib6 *fib, const uint8_t ip[RTE_FIB6_IPV6_ADDR_SIZE], uint8_t depth, uint64_t next_hop, int op)

Modify FIB function

Definition at line 39 of file rte_fib6.h.

rte_fib6_lookup_fn_t

typedef void(* rte_fib6_lookup_fn_t) (void *fib, uint8_t ips[][RTE_FIB6_IPV6_ADDR_SIZE], uint64_t *next_hops, const unsigned int n)

FIB bulk lookup function

Definition at line 43 of file rte_fib6.h.

Enumeration Type Documentation

rte_fib6_type

enum rte_fib6_type

Type of FIB struct

Enumerator
RTE_FIB6_DUMMY	RIB6 tree based FIB
RTE_FIB6_TRIE	TRIE based fib

Definition at line 33 of file rte_fib6.h.

rte_fib_trie_nh_sz

enum rte_fib_trie_nh_sz

Size of nexthop (1 << nh_sz) bits for TRIE based FIB

Definition at line 53 of file rte_fib6.h.

rte_fib6_lookup_type

enum rte_fib6_lookup_type

Type of lookup function implementation

Enumerator
RTE_FIB6_LOOKUP_DEFAULT	Selects the best implementation based on the max simd bitwidth
RTE_FIB6_LOOKUP_TRIE_SCALAR	Scalar lookup function implementation
RTE_FIB6_LOOKUP_TRIE_VECTOR_AVX512	Vector implementation using AVX512

Definition at line 60 of file rte_fib6.h.

Function Documentation

rte_fib6_create()

struct rte_fib6* rte_fib6_create	(	const char *	name,
		int	socket_id,
		struct rte_fib6_conf *	conf
	)

Create FIB

Parameters

name	FIB name
socket_id	NUMA socket ID for FIB table memory allocation
conf	Structure containing the configuration

Returns

Handle to FIB object on success NULL otherwise with rte_errno set to an appropriate values.

Examples:

examples/l3fwd/l3fwd_fib.c.

rte_fib6_find_existing()

struct rte_fib6* rte_fib6_find_existing

(

const char *

name

)

Find an existing FIB object and return a pointer to it.

Parameters

name	Name of the fib object as passed to rte_fib6_create()

Returns

Pointer to fib object or NULL if object not found with rte_errno set appropriately. Possible rte_errno values include:

• ENOENT - required entry not available to return.

rte_fib6_free()

void rte_fib6_free

(

struct rte_fib6 *

fib

)

Free an FIB object.

Parameters

fib	FIB object handle created by rte_fib6_create(). If fib is NULL, no operation is performed.

Returns

None

rte_fib6_add()

int rte_fib6_add	(	struct rte_fib6 *	fib,
		const uint8_t	ip[RTE_FIB6_IPV6_ADDR_SIZE],
		uint8_t	depth,
		uint64_t	next_hop
	)

Add a route to the FIB.

Parameters

fib	FIB object handle
ip	IPv6 prefix address to be added to the FIB
depth	Prefix length
next_hop	Next hop to be added to the FIB

Returns

0 on success, negative value otherwise

Examples:

examples/l3fwd/l3fwd_fib.c.

rte_fib6_delete()

int rte_fib6_delete	(	struct rte_fib6 *	fib,
		const uint8_t	ip[RTE_FIB6_IPV6_ADDR_SIZE],
		uint8_t	depth
	)

Delete a rule from the FIB.

Parameters

fib	FIB object handle
ip	IPv6 prefix address to be deleted from the FIB
depth	Prefix length

Returns

0 on success, negative value otherwise

rte_fib6_lookup_bulk()

int rte_fib6_lookup_bulk	(	struct rte_fib6 *	fib,
		uint8_t	ips[][RTE_FIB6_IPV6_ADDR_SIZE],
		uint64_t *	next_hops,
		int	n
	)

Lookup multiple IP addresses in the FIB.

Parameters

fib	FIB object handle
ips	Array of IPv6s to be looked up in the FIB
next_hops	Next hop of the most specific rule found for IP. This is an array of eight byte values. If the lookup for the given IP failed, then corresponding element would contain default nexthop value configured for a FIB.
n	Number of elements in ips (and next_hops) array to lookup.

Returns

-EINVAL for incorrect arguments, otherwise 0

Examples:

examples/l3fwd/l3fwd_fib.c.

rte_fib6_get_dp()

void* rte_fib6_get_dp

(

struct rte_fib6 *

fib

)

Get pointer to the dataplane specific struct

Parameters

fib	FIB6 object handle

Returns

Pointer on the dataplane struct on success NULL otherwise

rte_fib6_get_rib()

struct rte_rib6* rte_fib6_get_rib

(

struct rte_fib6 *

fib

)

Get pointer to the RIB6

Parameters

fib	FIB object handle

Returns

Pointer on the RIB6 on success NULL otherwise

rte_fib6_select_lookup()

int rte_fib6_select_lookup	(	struct rte_fib6 *	fib,
		enum rte_fib6_lookup_type	type
	)

Set lookup function based on type

Parameters

fib	FIB object handle
type	type of lookup function

Returns

0 on success -EINVAL on failure