Differential D27412 Diff 80704 sys/contrib/dpdk_rte_lpm/rte_lpm6.h

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sys/contrib/dpdk_rte_lpm/rte_lpm6.h

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				/* SPDX-License-Identifier: BSD-3-Clause
				* Copyright(c) 2010-2014 Intel Corporation
				*/
				#ifndef _RTE_LPM6_H_
				#define _RTE_LPM6_H_

				/**
				* @file
				* RTE Longest Prefix Match for IPv6 (LPM6)
				*/

				#ifdef __cplusplus
				extern "C" {
				#endif


				#define RTE_LPM6_MAX_DEPTH 128
				#define RTE_LPM6_IPV6_ADDR_SIZE 16
				/** Max number of characters in LPM name. */
				#define RTE_LPM6_NAMESIZE 32

				/** LPM structure. */
				struct rte_lpm6;

				struct nhop_object;
				struct rte_lpm6_external {
				struct nhop_object nh_idx; /< # -> idx mappings */
				uint32_t default_idx; /* nhop index of default route */
				uint32_t fibnum; /* fib index */
				};

				/** LPM configuration structure. */
				struct rte_lpm6_config {
				uint32_t max_rules; /*< Max number of rules. /
				uint32_t number_tbl8s; /*< Number of tbl8s to allocate. /
				int flags; /*< This field is currently unused. /
				};

				#define RTE_LPM6_RULE_SIZE 32
				struct rte_lpm6_rule fill_rule6(char buffer, const uint8_t *ip,
				uint8_t depth, uint32_t next_hop);
				/**
				* Create an LPM object.
				*
				* @param name
				* LPM object name
				* @param socket_id
				* NUMA socket ID for LPM table memory allocation
				* @param config
				* Structure containing the configuration
				* @return
				* Handle to LPM object on success, NULL otherwise with rte_errno set
				* to an appropriate values. Possible rte_errno values include:
				* - E_RTE_NO_CONFIG - function could not get pointer to rte_config structure
				* - E_RTE_SECONDARY - function was called from a secondary process instance
				* - EINVAL - invalid parameter passed to function
				* - ENOSPC - the maximum number of memzones has already been allocated
				* - EEXIST - a memzone with the same name already exists
				* - ENOMEM - no appropriate memory area found in which to create memzone
				*/
				struct rte_lpm6 *
				rte_lpm6_create(const char *name, int socket_id,
				const struct rte_lpm6_config *config);

				/**
				* Find an existing LPM object and return a pointer to it.
				*
				* @param name
				* Name of the lpm object as passed to rte_lpm6_create()
				* @return
				* Pointer to lpm object or NULL if object not found with rte_errno
				* set appropriately. Possible rte_errno values include:
				* - ENOENT - required entry not available to return.
				*/
				struct rte_lpm6 *
				rte_lpm6_find_existing(const char *name);

				/**
				* Free an LPM object.
				*
				* @param lpm
				* LPM object handle
				* @return
				* None
				*/
				void
				rte_lpm6_free(struct rte_lpm6 *lpm);

				/**
				* Add a rule to the LPM table.
				*
				* @param lpm
				* LPM object handle
				* @param ip
				* IP of the rule to be added to the LPM table
				* @param depth
				* Depth of the rule to be added to the LPM table
				* @param next_hop
				* Next hop of the rule to be added to the LPM table
				* @return
				* 0 on success, negative value otherwise
				*/
				int
				rte_lpm6_add(struct rte_lpm6 lpm, const uint8_t ip, uint8_t depth,
				uint32_t next_hop, int is_new_rule);

				/**
				* Check if a rule is present in the LPM table,
				* and provide its next hop if it is.
				*
				* @param lpm
				* LPM object handle
				* @param ip
				* IP of the rule to be searched
				* @param depth
				* Depth of the rule to searched
				* @param next_hop
				* Next hop of the rule (valid only if it is found)
				* @return
				* 1 if the rule exists, 0 if it does not, a negative value on failure
				*/
				int
				rte_lpm6_is_rule_present(struct rte_lpm6 lpm, const uint8_t ip, uint8_t depth,
				uint32_t *next_hop);

				/**
				* Delete a rule from the LPM table.
				*
				* @param lpm
				* LPM object handle
				* @param ip
				* IP of the rule to be deleted from the LPM table
				* @param depth
				* Depth of the rule to be deleted from the LPM table
				* @return
				* 0 on success, negative value otherwise
				*/
				int
				rte_lpm6_delete(struct rte_lpm6 lpm, const uint8_t ip, uint8_t depth,
				struct rte_lpm6_rule *lsp_rule);

				/**
				* Delete a rule from the LPM table.
				*
				* @param lpm
				* LPM object handle
				* @param ips
				* Array of IPs to be deleted from the LPM table
				* @param depths
				* Array of depths of the rules to be deleted from the LPM table
				* @param n
				* Number of rules to be deleted from the LPM table
				* @return
				* 0 on success, negative value otherwise.
				*/
				int
				rte_lpm6_delete_bulk_func(struct rte_lpm6 *lpm,
				uint8_t ips[][RTE_LPM6_IPV6_ADDR_SIZE], uint8_t *depths, unsigned n);

				/**
				* Delete all rules from the LPM table.
				*
				* @param lpm
				* LPM object handle
				*/
				void
				rte_lpm6_delete_all(struct rte_lpm6 *lpm);

				/**
				* Lookup an IP into the LPM table.
				*
				* @param lpm
				* LPM object handle
				* @param ip
				* IP to be looked up in the LPM table
				* @param next_hop
				* Next hop of the most specific rule found for IP (valid on lookup hit only)
				* @return
				* -EINVAL for incorrect arguments, -ENOENT on lookup miss, 0 on lookup hit
				*/
				int
				rte_lpm6_lookup(const struct rte_lpm6 lpm, const uint8_t ip, uint32_t *next_hop);

				/**
				* Lookup multiple IP addresses in an LPM table.
				*
				* @param lpm
				* LPM object handle
				* @param ips
				* Array of IPs to be looked up in the LPM table
				* @param next_hops
				* Next hop of the most specific rule found for IP (valid on lookup hit only).
				* This is an array of two byte values. The next hop will be stored on
				* each position on success; otherwise the position will be set to -1.
				* @param n
				* Number of elements in ips (and next_hops) array to lookup.
				* @return
				* -EINVAL for incorrect arguments, otherwise 0
				*/
				int
				rte_lpm6_lookup_bulk_func(const struct rte_lpm6 *lpm,
				uint8_t ips[][RTE_LPM6_IPV6_ADDR_SIZE],
				int32_t *next_hops, unsigned int n);

				#ifdef __cplusplus
				}
				#endif

				#endif