linux-kernel - Re: [PATCH net-next] net-next/hinic: Fix a case of Tx Queue is Stopped forever

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Date:   Thu, 28 Sep 2017 10:27:16 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     aviad.krawczyk@...wei.com
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH net-next] net-next/hinic: Fix a case of Tx Queue is
 Stopped forever

From: Aviad Krawczyk <aviad.krawczyk@...wei.com>
Date: Wed, 27 Sep 2017 02:11:33 +0800

> Fix the following scenario:
> 1. tx_free_poll is running on cpu X
> 2. xmit function is running on cpu Y and fails to get sq wqe
> 3. tx_free_poll frees wqes on cpu X and checks the queue is not stopped
> 4. xmit function stops the queue after failed to get sq wqe
> 5. The queue is stopped forever
> 
> Signed-off-by: Aviad Krawczyk <aviad.krawczyk@...wei.com>

Applied.