NAME

       rte_table_lpm_ipv6.h

SYNOPSIS

       #include <stdint.h>
       #include <rte_common.h>
       #include <rte_ip6.h>
       #include 'rte_table.h'

   Data Structures
       struct rte_table_lpm_ipv6_params
       struct rte_table_lpm_ipv6_key

   Variables
       struct rte_table_ops rte_table_lpm_ipv6_ops

Detailed Description

       RTE Table LPM for IPv6

       This table uses the Longest Prefix Match (LPM) algorithm to uniquely associate data to lookup keys.

       Use-case: IP routing table. Routes that are added to the table associate a next hop to an IP prefix. The
       IP prefix is specified as IP address and depth and cover for a multitude of lookup keys (i.e. destination
       IP addresses) that all share the same data (i.e. next hop). The next hop information typically contains
       the output interface ID, the IP address of the next hop station (which is part of the same IP network the
       output interface is connected to) and other flags and counters.

       The LPM primitive only allows associating an 8-bit number (next hop ID) to an IP prefix, while a routing
       table can potentially contain thousands of routes or even more. This means that the same next hop ID (and
       next hop information) has to be shared by multiple routes, which makes sense, as multiple remote networks
       could be reached through the same next hop. Therefore, when a route is added or updated, the LPM table
       has to check whether the same next hop is already in use before using a new next hop ID for this route.

       The comparison between different next hops is done for the first “entry_unique_size” bytes of the next
       hop information (configurable parameter), which have to uniquely identify the next hop, therefore the
       user has to carefully manage the format of the LPM table entry (i.e. the next hop information) so that
       any next hop data that changes value during run-time (e.g. counters) is placed outside of this area.

       Definition in file rte_table_lpm_ipv6.h.

Variable Documentation

   struct rte_table_ops rte_table_lpm_ipv6_ops [extern]
       LPM table operations

Author

       Generated automatically by Doxygen for DPDK from the source code.

DPDK                                             Version 24.11.3                         rte_table_lpm_ipv6.h(3)