netdev - RE: [PATCH net-next v2 1/1] net/tls: Combined memory allocation for decryption request

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Message-ID: <DB7PR04MB42524E59194FE165EA8E4E078B240@DB7PR04MB4252.eurprd04.prod.outlook.com>
Date:   Fri, 10 Aug 2018 10:02:41 +0000
From:   Vakul Garg <vakul.garg@....com>
To:     Dave Watson <davejwatson@...com>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "borisp@...lanox.com" <borisp@...lanox.com>,
        "aviadye@...lanox.com" <aviadye@...lanox.com>,
        "davem@...emloft.net" <davem@...emloft.net>
Subject: RE: [PATCH net-next v2 1/1] net/tls: Combined memory allocation for
 decryption request


> -----Original Message-----
> From: Dave Watson [mailto:davejwatson@...com]
> Sent: Thursday, August 9, 2018 9:56 PM
> To: Vakul Garg <vakul.garg@....com>
> Cc: netdev@...r.kernel.org; borisp@...lanox.com;
> aviadye@...lanox.com; davem@...emloft.net
> Subject: Re: [PATCH net-next v2 1/1] net/tls: Combined memory allocation
> for decryption request
> 
> On 08/09/18 04:56 AM, Vakul Garg wrote:
> > For preparing decryption request, several memory chunks are required
> > (aead_req, sgin, sgout, iv, aad). For submitting the decrypt request
> > to an accelerator, it is required that the buffers which are read by
> > the accelerator must be dma-able and not come from stack. The buffers
> > for aad and iv can be separately kmalloced each, but it is inefficient.
> > This patch does a combined allocation for preparing decryption request
> > and then segments into aead_req || sgin || sgout || iv || aad.
> >
> > Signed-off-by: Vakul Garg <vakul.garg@....com>
> 
> Reviewed-by: Dave Watson <davejwatson@...com>
> 
> Thanks, looks good to me now.

I had to rebase the patch so as not to use any other patch which is under review.
Since Doron's skb_nsg() patch needs rework, I submitted v3 after removing reference to function skb_nsg() and 
replaced it with skb_cow_data().

Kindly review.