From 39c6d43ee586404c19d103c0e79671b7bb3f3920 Mon Sep 17 00:00:00 2001
From: Hans Petter Selasky <hselasky@FreeBSD.org>
Date: Wed, 8 May 2019 11:08:21 +0000
Subject: [PATCH] Ensure the flowtable rules are not freed twice in mlx5en(4).
 This can happen when re-loading the driver.

MFC after:	3 days
Sponsored by:	Mellanox Technologies
---
 sys/dev/mlx5/mlx5_en/mlx5_en_flow_table.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sys/dev/mlx5/mlx5_en/mlx5_en_flow_table.c b/sys/dev/mlx5/mlx5_en/mlx5_en_flow_table.c
index 592d45e3cf2..88fb7f75374 100644
--- a/sys/dev/mlx5/mlx5_en/mlx5_en_flow_table.c
+++ b/sys/dev/mlx5/mlx5_en/mlx5_en_flow_table.c
@@ -131,6 +131,9 @@ mlx5e_del_eth_addr_from_flow_table(struct mlx5e_priv *priv,
 
 	if (ai->tt_vec & (1 << MLX5E_TT_ANY))
 		mlx5_del_flow_rule(ai->ft_rule[MLX5E_TT_ANY]);
+
+	/* ensure the rules are not freed again */
+	ai->tt_vec = 0;
 }
 
 static int