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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Raed Salem <raeds@mellanox.com>,
        Boris Pismenny <borisp@mellanox.com>,
        Saeed Mahameed <saeedm@mellanox.com>,
        Steffen Klassert <steffen.klassert@secunet.com>
Subject: [PATCH 4.19 065/116] xfrm: handle NETDEV_UNREGISTER for xfrm device
Date:   Wed,  1 Apr 2020 18:17:21 +0200
Message-Id: <20200401161551.715984732@linuxfoundation.org>
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From: Raed Salem <raeds@mellanox.com>

commit 03891f820c2117b19e80b370281eb924a09cf79f upstream.

This patch to handle the asynchronous unregister
device event so the device IPsec offload resources
could be cleanly released.

Fixes: e4db5b61c572 ("xfrm: policy: remove pcpu policy cache")
Signed-off-by: Raed Salem <raeds@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Reviewed-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/xfrm/xfrm_device.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/xfrm/xfrm_device.c
+++ b/net/xfrm/xfrm_device.c
@@ -332,6 +332,7 @@ static int xfrm_dev_event(struct notifie
 		return xfrm_dev_feat_change(dev);
 
 	case NETDEV_DOWN:
+	case NETDEV_UNREGISTER:
 		return xfrm_dev_down(dev);
 	}
 	return NOTIFY_DONE;