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31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 * RTE Longest Prefix Match for IPv6 (LPM6)
46 #define RTE_LPM6_MAX_DEPTH 128
47 #define RTE_LPM6_IPV6_ADDR_SIZE 16
48 /** Max number of characters in LPM name. */
49 #define RTE_LPM6_NAMESIZE 32
54 /** LPM configuration structure. */
55 struct rte_lpm6_config {
56 uint32_t max_rules; /**< Max number of rules. */
57 uint32_t number_tbl8s; /**< Number of tbl8s to allocate. */
58 int flags; /**< This field is currently unused. */
62 * Create an LPM object.
67 * NUMA socket ID for LPM table memory allocation
69 * Structure containing the configuration
71 * Handle to LPM object on success, NULL otherwise with rte_errno set
72 * to an appropriate values. Possible rte_errno values include:
73 * - E_RTE_NO_CONFIG - function could not get pointer to rte_config structure
74 * - E_RTE_SECONDARY - function was called from a secondary process instance
75 * - E_RTE_NO_TAILQ - no tailq list could be got for the lpm object list
76 * - EINVAL - invalid parameter passed to function
77 * - ENOSPC - the maximum number of memzones has already been allocated
78 * - EEXIST - a memzone with the same name already exists
79 * - ENOMEM - no appropriate memory area found in which to create memzone
82 rte_lpm6_create(const char *name, int socket_id,
83 const struct rte_lpm6_config *config);
86 * Find an existing LPM object and return a pointer to it.
89 * Name of the lpm object as passed to rte_lpm6_create()
91 * Pointer to lpm object or NULL if object not found with rte_errno
92 * set appropriately. Possible rte_errno values include:
93 * - ENOENT - required entry not available to return.
96 rte_lpm6_find_existing(const char *name);
107 rte_lpm6_free(struct rte_lpm6 *lpm);
110 * Add a rule to the LPM table.
115 * IP of the rule to be added to the LPM table
117 * Depth of the rule to be added to the LPM table
119 * Next hop of the rule to be added to the LPM table
121 * 0 on success, negative value otherwise
124 rte_lpm6_add(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth,
128 * Delete a rule from the LPM table.
133 * IP of the rule to be deleted from the LPM table
135 * Depth of the rule to be deleted from the LPM table
137 * 0 on success, negative value otherwise
140 rte_lpm6_delete(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth);
143 * Delete a rule from the LPM table.
148 * Array of IPs to be deleted from the LPM table
150 * Array of depths of the rules to be deleted from the LPM table
152 * Number of rules to be deleted from the LPM table
154 * 0 on success, negative value otherwise.
157 rte_lpm6_delete_bulk_func(struct rte_lpm6 *lpm,
158 uint8_t ips[][RTE_LPM6_IPV6_ADDR_SIZE], uint8_t *depths, unsigned n);
161 * Delete all rules from the LPM table.
167 rte_lpm6_delete_all(struct rte_lpm6 *lpm);
170 * Lookup an IP into the LPM table.
175 * IP to be looked up in the LPM table
177 * Next hop of the most specific rule found for IP (valid on lookup hit only)
179 * -EINVAL for incorrect arguments, -ENOENT on lookup miss, 0 on lookup hit
182 rte_lpm6_lookup(const struct rte_lpm6 *lpm, uint8_t *ip, uint8_t *next_hop);
185 * Lookup multiple IP addresses in an LPM table.
190 * Array of IPs to be looked up in the LPM table
192 * Next hop of the most specific rule found for IP (valid on lookup hit only).
193 * This is an array of two byte values. The next hop will be stored on
194 * each position on success; otherwise the position will be set to -1.
196 * Number of elements in ips (and next_hops) array to lookup.
198 * -EINVAL for incorrect arguments, otherwise 0
201 rte_lpm6_lookup_bulk_func(const struct rte_lpm6 *lpm,
202 uint8_t ips[][RTE_LPM6_IPV6_ADDR_SIZE],
203 int16_t * next_hops, unsigned n);