tailq: move to dynamic tailq

[dpdk.git] / lib / librte_lpm / rte_lpm6.h

diff --git a/lib/librte_lpm/rte_lpm6.h b/lib/librte_lpm/rte_lpm6.h
index 4d893e7..cedcea8 100644 (file)
--- a/lib/librte_lpm/rte_lpm6.h
+++ b/lib/librte_lpm/rte_lpm6.h
@@ -1,13 +1,13 @@
 /*-
  *   BSD LICENSE
- * 
- *   Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
+ *
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
  *   All rights reserved.
- * 
+ *
  *   Redistribution and use in source and binary forms, with or without
  *   modification, are permitted provided that the following conditions
  *   are met:
- * 
+ *
  *     * Redistributions of source code must retain the above copyright
  *       notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above copyright
@@ -17,7 +17,7 @@
  *     * Neither the name of Intel Corporation nor the names of its
  *       contributors may be used to endorse or promote products derived
  *       from this software without specific prior written permission.
- * 
+ *
  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
@@ -72,7 +72,6 @@ struct rte_lpm6_config {
  *   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
- *    - E_RTE_NO_TAILQ - no tailq list could be got for the lpm object list
  *    - 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
@@ -124,6 +123,25 @@ int
 rte_lpm6_add(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth,
                uint8_t next_hop);
 
+/**
+ * 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, uint8_t *ip, uint8_t depth,
+uint8_t *next_hop);
+
 /**
  * Delete a rule from the LPM table.
  *