[dpdk-stable] patch 'lpm: fix freeing unused sub-table on rule delete' has been queued to stable release 16.07.2

[Yuanhan Liu]

Hi,

FYI, your patch has been queued to stable release 16.07.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable
yet. It will be pushed if I get no objections before 11/06/16.
So please shout if anyone has objections.

Thanks.

	--yliu

---
>From be7420d9a6baccdd179deb0ec0c4cb8e3eeb5948 Mon Sep 17 00:00:00 2001
From: Wei Dai <wei.dai at intel.com>
Date: Mon, 8 Aug 2016 14:39:51 +0800
Subject: [PATCH] lpm: fix freeing unused sub-table on rule delete

[ upstream commit 69ed52dddc0fc64f5cec7e7384197874f92ff393 ]

When all rules with depth > 24 are deleted in a same sub-table
(tlb8 group) and only a rule with depth <=24 is left in it,
this sub-table (tlb8 group) should be recycled.

Fixes: dc81ebbacaeb ("lpm: extend IPv4 next hop field")
Fixes: af75078fece3 ("first public release")

Signed-off-by: Wei Dai <wei.dai at intel.com>
Acked-by: Bruce Richardson <bruce.richardson at intel.com>
---
 lib/librte_lpm/rte_lpm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/librte_lpm/rte_lpm.c b/lib/librte_lpm/rte_lpm.c
index 6f65d1c..24fec4b 100644
--- a/lib/librte_lpm/rte_lpm.c
+++ b/lib/librte_lpm/rte_lpm.c
@@ -1533,7 +1533,7 @@ tbl8_recycle_check_v20(struct rte_lpm_tbl_entry_v20 *tbl8,
 		 * and if so check the rest of the entries to verify that they
 		 * are all of this depth.
 		 */
-		if (tbl8[tbl8_group_start].depth < MAX_DEPTH_TBL24) {
+		if (tbl8[tbl8_group_start].depth <= MAX_DEPTH_TBL24) {
 			for (i = (tbl8_group_start + 1); i < tbl8_group_end;
 					i++) {
 
@@ -1580,7 +1580,7 @@ tbl8_recycle_check_v1604(struct rte_lpm_tbl_entry *tbl8,
 		 * and if so check the rest of the entries to verify that they
 		 * are all of this depth.
 		 */
-		if (tbl8[tbl8_group_start].depth < MAX_DEPTH_TBL24) {
+		if (tbl8[tbl8_group_start].depth <= MAX_DEPTH_TBL24) {
 			for (i = (tbl8_group_start + 1); i < tbl8_group_end;
 					i++) {
 
-- 
1.9.0