d89a5bce1d
This patch extend next_hop field from 8-bits to 21-bits in LPM library for IPv6. Added versioning symbols to functions and updated library and applications that have a dependency on LPM library. Signed-off-by: Vladyslav Buslov <vladyslav.buslov@harmonicinc.com> Acked-by: Bruce Richardson <bruce.richardson@intel.com>
256 lines
7.5 KiB
C
256 lines
7.5 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _RTE_LPM6_H_
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#define _RTE_LPM6_H_
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/**
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* @file
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* RTE Longest Prefix Match for IPv6 (LPM6)
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*/
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#include <stdint.h>
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#include <rte_compat.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define RTE_LPM6_MAX_DEPTH 128
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#define RTE_LPM6_IPV6_ADDR_SIZE 16
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/** Max number of characters in LPM name. */
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#define RTE_LPM6_NAMESIZE 32
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/** LPM structure. */
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struct rte_lpm6;
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/** LPM configuration structure. */
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struct rte_lpm6_config {
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uint32_t max_rules; /**< Max number of rules. */
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uint32_t number_tbl8s; /**< Number of tbl8s to allocate. */
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int flags; /**< This field is currently unused. */
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};
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/**
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* Create an LPM object.
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*
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* @param name
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* LPM object name
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* @param socket_id
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* NUMA socket ID for LPM table memory allocation
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* @param config
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* Structure containing the configuration
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* @return
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* Handle to LPM object on success, NULL otherwise with rte_errno set
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* to an appropriate values. Possible rte_errno values include:
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* - E_RTE_NO_CONFIG - function could not get pointer to rte_config structure
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* - E_RTE_SECONDARY - function was called from a secondary process instance
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* - EINVAL - invalid parameter passed to function
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* - ENOSPC - the maximum number of memzones has already been allocated
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* - EEXIST - a memzone with the same name already exists
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* - ENOMEM - no appropriate memory area found in which to create memzone
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*/
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struct rte_lpm6 *
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rte_lpm6_create(const char *name, int socket_id,
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const struct rte_lpm6_config *config);
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/**
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* Find an existing LPM object and return a pointer to it.
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*
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* @param name
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* Name of the lpm object as passed to rte_lpm6_create()
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* @return
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* Pointer to lpm object or NULL if object not found with rte_errno
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* set appropriately. Possible rte_errno values include:
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* - ENOENT - required entry not available to return.
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*/
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struct rte_lpm6 *
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rte_lpm6_find_existing(const char *name);
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/**
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* Free an LPM object.
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*
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* @param lpm
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* LPM object handle
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* @return
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* None
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*/
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void
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rte_lpm6_free(struct rte_lpm6 *lpm);
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/**
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* Add a rule to the LPM table.
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*
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* @param lpm
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* LPM object handle
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* @param ip
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* IP of the rule to be added to the LPM table
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* @param depth
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* Depth of the rule to be added to the LPM table
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* @param next_hop
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* Next hop of the rule to be added to the LPM table
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* @return
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* 0 on success, negative value otherwise
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*/
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int
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rte_lpm6_add(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth,
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uint32_t next_hop);
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int
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rte_lpm6_add_v20(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth,
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uint8_t next_hop);
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int
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rte_lpm6_add_v1705(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth,
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uint32_t next_hop);
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/**
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* Check if a rule is present in the LPM table,
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* and provide its next hop if it is.
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*
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* @param lpm
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* LPM object handle
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* @param ip
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* IP of the rule to be searched
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* @param depth
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* Depth of the rule to searched
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* @param next_hop
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* Next hop of the rule (valid only if it is found)
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* @return
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* 1 if the rule exists, 0 if it does not, a negative value on failure
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*/
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int
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rte_lpm6_is_rule_present(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth,
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uint32_t *next_hop);
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int
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rte_lpm6_is_rule_present_v20(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth,
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uint8_t *next_hop);
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int
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rte_lpm6_is_rule_present_v1705(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth,
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uint32_t *next_hop);
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/**
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* Delete a rule from the LPM table.
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*
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* @param lpm
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* LPM object handle
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* @param ip
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* IP of the rule to be deleted from the LPM table
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* @param depth
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* Depth of the rule to be deleted from the LPM table
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* @return
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* 0 on success, negative value otherwise
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*/
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int
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rte_lpm6_delete(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth);
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/**
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* Delete a rule from the LPM table.
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*
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* @param lpm
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* LPM object handle
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* @param ips
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* Array of IPs to be deleted from the LPM table
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* @param depths
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* Array of depths of the rules to be deleted from the LPM table
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* @param n
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* Number of rules to be deleted from the LPM table
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* @return
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* 0 on success, negative value otherwise.
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*/
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int
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rte_lpm6_delete_bulk_func(struct rte_lpm6 *lpm,
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uint8_t ips[][RTE_LPM6_IPV6_ADDR_SIZE], uint8_t *depths, unsigned n);
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/**
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* Delete all rules from the LPM table.
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*
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* @param lpm
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* LPM object handle
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*/
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void
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rte_lpm6_delete_all(struct rte_lpm6 *lpm);
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/**
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* Lookup an IP into the LPM table.
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*
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* @param lpm
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* LPM object handle
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* @param ip
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* IP to be looked up in the LPM table
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* @param next_hop
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* Next hop of the most specific rule found for IP (valid on lookup hit only)
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* @return
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* -EINVAL for incorrect arguments, -ENOENT on lookup miss, 0 on lookup hit
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*/
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int
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rte_lpm6_lookup(const struct rte_lpm6 *lpm, uint8_t *ip, uint32_t *next_hop);
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int
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rte_lpm6_lookup_v20(const struct rte_lpm6 *lpm, uint8_t *ip, uint8_t *next_hop);
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int
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rte_lpm6_lookup_v1705(const struct rte_lpm6 *lpm, uint8_t *ip,
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uint32_t *next_hop);
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/**
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* Lookup multiple IP addresses in an LPM table.
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*
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* @param lpm
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* LPM object handle
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* @param ips
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* Array of IPs to be looked up in the LPM table
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* @param next_hops
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* Next hop of the most specific rule found for IP (valid on lookup hit only).
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* This is an array of two byte values. The next hop will be stored on
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* each position on success; otherwise the position will be set to -1.
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* @param n
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* Number of elements in ips (and next_hops) array to lookup.
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* @return
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* -EINVAL for incorrect arguments, otherwise 0
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*/
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int
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rte_lpm6_lookup_bulk_func(const struct rte_lpm6 *lpm,
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uint8_t ips[][RTE_LPM6_IPV6_ADDR_SIZE],
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int32_t *next_hops, unsigned int n);
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int
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rte_lpm6_lookup_bulk_func_v20(const struct rte_lpm6 *lpm,
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uint8_t ips[][RTE_LPM6_IPV6_ADDR_SIZE],
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int16_t *next_hops, unsigned int n);
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int
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rte_lpm6_lookup_bulk_func_v1705(const struct rte_lpm6 *lpm,
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uint8_t ips[][RTE_LPM6_IPV6_ADDR_SIZE],
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int32_t *next_hops, unsigned int n);
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#ifdef __cplusplus
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}
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#endif
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#endif
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