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From: Bruce Richardson <bruce.richardson@intel.com>
To: kuldeep.samasi@wipro.com
Cc: dev@dpdk.org, dev-bounces@dpdk.org
Subject: Re: [dpdk-dev] PMD architecture related to code
Date: Fri, 13 Mar 2015 14:51:50 +0000	[thread overview]
Message-ID: <20150313145149.GB11352@bricha3-MOBL3> (raw)
In-Reply-To: <SIXPR03MB06056AFE877E1760ADD35EAB8A070@SIXPR03MB0605.apcprd03.prod.outlook.com>

On Fri, Mar 13, 2015 at 04:45:47AM +0000, kuldeep.samasi@wipro.com wrote:
> Hi Developer Team ,
> I am trying add new functionality on Poll Mode driver .
> But I don't have idea how packets are coming to kernel mode and going to user space and doing packet processing DPDK .

The packets never go into the kernel when DPDK is in use. Instead the DPDK PMD
configures the NIC to DMA the packets directly into userspace buffers. Hence the
high performance.


> I need suggestion on which file the PMD architecture defined .
> Regards ,
> Kuldeep
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  parent reply	other threads:[~2015-03-13 14:51 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-13  4:45 kuldeep.samasi
2015-03-13  5:18 ` Akshay
2015-03-13 10:45   ` kuldeep.samasi
2015-03-13 10:57     ` Akshay
2015-03-13 14:51 ` Bruce Richardson [this message]
2015-03-14  7:52   ` kuldeep.samasi
2015-03-17 13:03     ` [dpdk-dev] ["Potential Spoofed"] " kuldeep.samasi

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