From 4d8fcf216c90bc25e34ae2200aa8985ee3158898 Mon Sep 17 00:00:00 2001
From: Alaa Hleihel <alaa@mellanox.com>
Date: Wed, 5 Sep 2018 11:43:23 +0300
Subject: net/mlx5e: Avoid unbounded peer devices when unpairing TC hairpin
 rules

If the peer device was already unbound, then do not attempt to modify
it's resources, otherwise we will crash on dereferencing non-existing
device.

Fixes: 5c65c564c962 ("net/mlx5e: Support offloading TC NIC hairpin flows")
Signed-off-by: Alaa Hleihel <alaa@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
---
 include/linux/mlx5/transobj.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'include')

diff --git a/include/linux/mlx5/transobj.h b/include/linux/mlx5/transobj.h
index 83a33a1873a6..7f5ca2cd3a32 100644
--- a/include/linux/mlx5/transobj.h
+++ b/include/linux/mlx5/transobj.h
@@ -90,6 +90,8 @@ struct mlx5_hairpin {
 
 	u32 *rqn;
 	u32 *sqn;
+
+	bool peer_gone;
 };
 
 struct mlx5_hairpin *
-- 
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