patch 'fib6: fix tbl8 allocation check logic' has been queued to stable release 24.11.4

[Kevin Traynor]

Hi,

FYI, your patch has been queued to stable release 24.11.4

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 11/05/25. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/kevintraynor/dpdk-stable

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable/commit/66a575be6f83cc2c1a78c9a5ca7662c606e02efe

Thanks.

Kevin

---
>From 66a575be6f83cc2c1a78c9a5ca7662c606e02efe Mon Sep 17 00:00:00 2001
From: Vladimir Medvedkin <vladimir.medvedkin at intel.com>
Date: Tue, 14 Oct 2025 18:17:55 +0000
Subject: [PATCH] fib6: fix tbl8 allocation check logic

[ upstream commit f0db0f659a1f4192a4aca7ce2a298f272aa3af8f ]

Currently if there were 'n' preallocated tbl8 entries only 'n - 1' were
able to be used. Fix the logic allowing to use all preallocated tbl8
entries.

Fixes: c3e12e0f0354 ("fib: add dataplane algorithm for IPv6")

Signed-off-by: Vladimir Medvedkin <vladimir.medvedkin at intel.com>
Tested-by: Robin Jarry <rjarry at redhat.com>
---
 lib/fib/trie.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/fib/trie.c b/lib/fib/trie.c
index e186d2ecfe..24674276c4 100644
--- a/lib/fib/trie.c
+++ b/lib/fib/trie.c
@@ -576,6 +576,5 @@ trie_modify(struct rte_fib6 *fib, const struct rte_ipv6_addr *ip,
 		}
 
-		if ((depth > 24) && (dp->rsvd_tbl8s >=
-				dp->number_tbl8s - depth_diff))
+		if ((depth > 24) && (dp->rsvd_tbl8s + depth_diff > dp->number_tbl8s))
 			return -ENOSPC;
 
-- 
2.51.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2025-10-31 13:53:54.436527259 +0000
+++ 0072-fib6-fix-tbl8-allocation-check-logic.patch	2025-10-31 13:53:52.175141129 +0000
@@ -1 +1 @@
-From f0db0f659a1f4192a4aca7ce2a298f272aa3af8f Mon Sep 17 00:00:00 2001
+From 66a575be6f83cc2c1a78c9a5ca7662c606e02efe Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit f0db0f659a1f4192a4aca7ce2a298f272aa3af8f ]
+
@@ -11 +12,0 @@
-Cc: stable at dpdk.org
@@ -20 +21 @@
-index 5a9978b4ca..6427920c58 100644
+index e186d2ecfe..24674276c4 100644
@@ -23 +24 @@
-@@ -577,6 +577,5 @@ trie_modify(struct rte_fib6 *fib, const struct rte_ipv6_addr *ip,
+@@ -576,6 +576,5 @@ trie_modify(struct rte_fib6 *fib, const struct rte_ipv6_addr *ip,