From: Yevgeny Kliteynik <kliteyn@nvidia.com>
Date: Wed, 26 Jul 2023 11:38:03 +0000 (+0300)
Subject: net/mlx5: DR, Fix wrong allocation of modify hdr pattern
X-Git-Tag: v6.4.11~38
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c256f96535bd3a7228c57c663ae1bac1b542f315;p=thirdparty%2Fkernel%2Fstable.git

net/mlx5: DR, Fix wrong allocation of modify hdr pattern

commit 8bfe1e19fb96d89fce14302e35cba0cd9f39d0a1 upstream.

Fixing wrong calculation of the modify hdr pattern size,
where the previously calculated number would not be enough
to accommodate the required number of actions.

Fixes: da5d0027d666 ("net/mlx5: DR, Add cache for modify header pattern")
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Erez Shitrit <erezsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ptrn.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ptrn.c
index d6947fe13d560..8ca534ef5d031 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ptrn.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ptrn.c
@@ -82,7 +82,7 @@ dr_ptrn_alloc_pattern(struct mlx5dr_ptrn_mgr *mgr,
 	u32 chunk_size;
 	u32 index;
 
-	chunk_size = ilog2(num_of_actions);
+	chunk_size = ilog2(roundup_pow_of_two(num_of_actions));
 	/* HW modify action index granularity is at least 64B */
 	chunk_size = max_t(u32, chunk_size, DR_CHUNK_SIZE_8);