X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_lpm%2Frte_lpm.h;h=906ec44830621580577cb83cee26bb3d17f87dba;hb=0944e1e6801b8231eac0b1de8eac62ab85236f9f;hp=fbda2930bbd077fccbe8de5b5f9b791f6ed55502;hpb=8d4b8c87f2e8377bf1124feee193bc26a8d7ca8a;p=dpdk.git

diff --git a/lib/librte_lpm/rte_lpm.h b/lib/librte_lpm/rte_lpm.h
index fbda2930bb..906ec44830 100644
--- a/lib/librte_lpm/rte_lpm.h
+++ b/lib/librte_lpm/rte_lpm.h
@@ -1,34 +1,5 @@
-/*-
- *   BSD LICENSE
- *
- *   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
- *       notice, this list of conditions and the following disclaimer in
- *       the documentation and/or other materials provided with the
- *       distribution.
- *     * 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
- *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
  */
 
 #ifndef _RTE_LPM_H_
@@ -45,6 +16,7 @@
 #include <stdlib.h>
 #include <rte_branch_prediction.h>
 #include <rte_byteorder.h>
+#include <rte_config.h>
 #include <rte_memory.h>
 #include <rte_common.h>
 #include <rte_vect.h>
@@ -100,6 +72,7 @@ struct rte_lpm_tbl_entry_v20 {
 	 * a group index pointing to a tbl8 structure (tbl24 only, when
 	 * valid_group is set)
 	 */
+	RTE_STD_C11
 	union {
 		uint8_t next_hop;
 		uint8_t group_idx;
@@ -115,7 +88,7 @@ struct rte_lpm_tbl_entry_v20 {
 	 */
 	uint8_t valid_group :1;
 	uint8_t depth       :6; /**< Rule depth. */
-};
+} __rte_aligned(sizeof(uint16_t));
 
 __extension__
 struct rte_lpm_tbl_entry {
@@ -148,7 +121,7 @@ struct rte_lpm_tbl_entry_v20 {
 		uint8_t group_idx;
 		uint8_t next_hop;
 	};
-};
+} __rte_aligned(sizeof(uint16_t));
 
 __extension__
 struct rte_lpm_tbl_entry {
@@ -381,6 +354,10 @@ rte_lpm_lookup(struct rte_lpm *lpm, uint32_t ip, uint32_t *next_hop)
 	ptbl = (const uint32_t *)(&lpm->tbl24[tbl24_index]);
 	tbl_entry = *ptbl;
 
+	/* Memory ordering is not required in lookup. Because dataflow
+	 * dependency exists, compiler or HW won't be able to re-order
+	 * the operations.
+	 */
 	/* Copy tbl8 entry (only if needed) */
 	if (unlikely((tbl_entry & RTE_LPM_VALID_EXT_ENTRY_BITMASK) ==
 			RTE_LPM_VALID_EXT_ENTRY_BITMASK)) {
@@ -469,7 +446,7 @@ rte_lpm_lookup_bulk_func(const struct rte_lpm *lpm, const uint32_t *ips,
  * @param hop
  *   Next hop of the most specific rule found for IP (valid on lookup hit only).
  *   This is an 4 elements array of two byte values.
- *   If the lookup was succesfull for the given IP, then least significant byte
+ *   If the lookup was successful for the given IP, then least significant byte
  *   of the corresponding element is the  actual next hop and the most
  *   significant byte is zero.
  *   If the lookup for the given IP failed, then corresponding element would