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rte_fib6.h(3) DPDK rte_fib6.h(3)

NAME

rte_fib6.h

SYNOPSIS

#include <stdint.h>

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

#define RTE_FIB6_MAXDEPTH 128

Maximum depth value possible for IPv6 FIB.

Definition at line 27 of file rte_fib6.h.

Typedef Documentation

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.

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

enum rte_fib6_type

Type of FIB struct

Enumerator

RIB6 tree based FIB
TRIE based fib

Definition at line 33 of file rte_fib6.h.

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.

enum rte_fib6_lookup_type

Type of lookup function implementation

Enumerator

Selects the best implementation based on the max simd bitwidth
Scalar lookup function implementation
Vector implementation using AVX512

Definition at line 60 of file rte_fib6.h.

Function Documentation

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.

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.

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.

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

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

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

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

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

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

Author

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Fri Dec 15 2023 Version 23.11.0