From: David Miller <davem@davemloft.net>
To: madalin.bucur@nxp.com
Cc: netdev@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-kernel@vger.kernel.org, oss@buserror.net,
ppc@mindchasers.com, joe@perches.com, pebolle@tiscali.nl,
joakim.tjernlund@transmode.se
Subject: Re: [PATCH net-next v6 02/10] dpaa_eth: add support for DPAA Ethernet
Date: Mon, 07 Nov 2016 10:55:00 -0500 (EST) [thread overview]
Message-ID: <20161107.105500.43380129278294700.davem@davemloft.net> (raw)
In-Reply-To: <AM4PR04MB16049FF6E433DA445828A855ECA70@AM4PR04MB1604.eurprd04.prod.outlook.com>
From: Madalin-Cristian Bucur <madalin.bucur@nxp.com>
Date: Mon, 7 Nov 2016 15:43:26 +0000
>> From: David Miller [mailto:davem@davemloft.net]
>> Sent: Thursday, November 03, 2016 9:58 PM
>>
>> Why? By clearing this, you disallow an important fundamental way to do
>> performane testing, via pktgen.
>
> The Tx path in DPAA requires one to insert a back-pointer to the skb into
> the Tx buffer. On the Tx confirmation path the back-pointer in the buffer
> is used to release the skb. If Tx buffer is shared we'd alter the back-pointer
> and leak/double free skbs. See also
Then have your software state store an array of SKB pointers, one for each
TX ring entry, just like every other driver does.
next prev parent reply other threads:[~2016-11-07 15:55 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-02 20:17 [PATCH net-next v6 00/10] dpaa_eth: Add the QorIQ DPAA Ethernet driver Madalin Bucur
2016-11-02 20:17 ` [PATCH net-next v6 01/10] devres: add devm_alloc_percpu() Madalin Bucur
2016-11-02 20:17 ` [PATCH net-next v6 02/10] dpaa_eth: add support for DPAA Ethernet Madalin Bucur
2016-11-03 19:58 ` David Miller
2016-11-04 6:53 ` Coding Style: Reverse XMAS tree declarations ? (was Re: [PATCH net-next v6 02/10] dpaa_eth: add support for DPAA Ethernet) Joe Perches
2016-11-04 11:01 ` Lino Sanfilippo
2016-11-04 15:07 ` Coding Style: Reverse XMAS tree declarations ? David Miller
2016-11-04 17:44 ` Joe Perches
2016-11-04 20:06 ` Lino Sanfilippo
2016-11-07 11:00 ` David Laight
2016-11-04 17:05 ` Coding Style: Reverse XMAS tree declarations ? (was Re: [PATCH net-next v6 02/10] dpaa_eth: add support for DPAA Ethernet) Randy Dunlap
2016-11-04 19:48 ` David VomLehn
2016-11-07 8:05 ` Michael Ellerman
2016-11-07 15:43 ` [PATCH net-next v6 02/10] dpaa_eth: add support for DPAA Ethernet Madalin-Cristian Bucur
2016-11-07 15:55 ` David Miller [this message]
2016-11-07 16:32 ` Madalin-Cristian Bucur
2016-11-07 16:39 ` David Miller
2016-11-07 16:59 ` Madalin-Cristian Bucur
2016-11-09 17:16 ` Madalin-Cristian Bucur
2016-11-09 17:18 ` David Miller
2016-11-07 16:25 ` Joakim Tjernlund
2016-11-02 20:17 ` [PATCH net-next v6 03/10] dpaa_eth: add option to use one buffer pool set Madalin Bucur
2016-11-02 20:17 ` [PATCH net-next v6 04/10] dpaa_eth: add ethtool functionality Madalin Bucur
2016-11-02 20:17 ` [PATCH net-next v6 05/10] dpaa_eth: add ethtool statistics Madalin Bucur
2016-11-02 20:17 ` [PATCH net-next v6 06/10] dpaa_eth: add sysfs exports Madalin Bucur
2016-11-02 20:17 ` [PATCH net-next v6 07/10] dpaa_eth: add trace points Madalin Bucur
2016-11-02 20:17 ` [PATCH net-next v6 08/10] arch/powerpc: Enable FSL_PAMU Madalin Bucur
2016-11-02 20:17 ` [PATCH net-next v6 09/10] arch/powerpc: Enable FSL_FMAN Madalin Bucur
2016-11-02 20:17 ` [PATCH net-next v6 10/10] arch/powerpc: Enable dpaa_eth Madalin Bucur
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