Commit c914307e1d41 for kernel

commit c914307e1d41c2cb7bcdcbfde4cd2f214f6aa027
Author: Li RongQing <lirongqing@baidu.com>
Date:   Fri Jul 3 22:14:23 2026 +0800

    net/mlx5: Fix L3 tunnel entropy refcount leak

    mlx5_tun_entropy_refcount_inc() counts both VXLAN and L2-to-L3
    tunnel reformat entries as entropy-enabling users. The matching
    decrement path only handled VXLAN, leaving L2-to-L3 tunnel entries
    counted after release.

    Handle MLX5_REFORMAT_TYPE_L2_TO_L3_TUNNEL in
    mlx5_tun_entropy_refcount_dec() as well so the enabling entry
    refcount remains balanced.

    Fixes: f828ca6a2fb6 ("net/mlx5e: Add support for hw encapsulation of MPLS over UDP")
    Signed-off-by: Li RongQing <lirongqing@baidu.com>
    Reviewed-by: Simon Horman <horms@kernel.org>
    Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
    Link: https://patch.msgid.link/20260703141423.1723-1-lirongqing@baidu.com
    Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/port_tun.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/port_tun.c
index 4571c56ec3c9..97f6097d4c70 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/port_tun.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/port_tun.c
@@ -176,7 +176,8 @@ void mlx5_tun_entropy_refcount_dec(struct mlx5_tun_entropy *tun_entropy,
 				   int reformat_type)
 {
 	mutex_lock(&tun_entropy->lock);
-	if (reformat_type == MLX5_REFORMAT_TYPE_L2_TO_VXLAN)
+	if (reformat_type == MLX5_REFORMAT_TYPE_L2_TO_VXLAN ||
+	    reformat_type == MLX5_REFORMAT_TYPE_L2_TO_L3_TUNNEL)
 		tun_entropy->num_enabling_entries--;
 	else if (reformat_type == MLX5_REFORMAT_TYPE_L2_TO_NVGRE &&
 		 --tun_entropy->num_disabling_entries == 0)