From: David Miller <davem@davemloft.net>
To: punnaiah.choudary.kalluri@xilinx.com
Cc: nicolas.ferre@atmel.com, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, michals@xilinx.com,
harinik@xilinx.com, kpc528@gmail.com,
kalluripunnaiahchoudary@gmail.com, punnaia@xilinx.com
Subject: Re: [PATCH] net: macb: Fix race condition in driver when Rx frame is dropped
Date: Wed, 29 Apr 2015 15:25:02 -0400 (EDT) [thread overview]
Message-ID: <20150429.152502.1871572837950161327.davem@davemloft.net> (raw)
In-Reply-To: <c84f3773-71f2-431a-bc20-6a969d32eb63@BN1BFFO11FD033.protection.gbl>
From: Punnaiah Choudary Kalluri <punnaiah.choudary.kalluri@xilinx.com>
Date: Wed, 29 Apr 2015 08:34:46 +0530
> From: Punnaiah Choudary Kalluri <punnaiah.choudary.kalluri@xilinx.com>
>
> Under heavy Rx load, observed that the Hw is updating the USED bit
> and it is not updating the received frame status to the BD control
> field. This could be lack of resources for processing the BDs at high
> data rates. Driver drops the frame associated with this BD but not
> clearing the USED bit. So, this is causing hang condition as Hw
> expects USED bit to be cleared for this BD.
>
> Signed-off-by: Punnaiah Choudary Kalluri <punnaia@xilinx.com>
Applied, thanks.
prev parent reply other threads:[~2015-04-29 19:25 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-29 3:04 [PATCH] net: macb: Fix race condition in driver when Rx frame is dropped Punnaiah Choudary Kalluri
2015-04-29 19:25 ` David Miller [this message]
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