From: Stephen Hemminger <stephen@networkplumber.org>
To: "Chengke Wang" <wongck@pku.edu.cn>
Cc: users@dpdk.org
Subject: Re: [dpdk-users] DPDK support for wireless NICs
Date: Mon, 25 Nov 2019 10:29:10 -0800 [thread overview]
Message-ID: <20191125102910.3da51a30@hermes.lan> (raw)
In-Reply-To: <42d7bfa2.ad6c4.16e86f736a1.Coremail.wongck@pku.edu.cn>
On Wed, 20 Nov 2019 11:59:38 +0800 (GMT+08:00)
"Chengke Wang" <wongck@pku.edu.cn> wrote:
> Dear all,
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> I found DPDK in order to implement a high-speed dataplane on 802.11ac. We have tested that in the scenario where two machines use Wi-Fi Direct to communicate, the goodput of TCP can reach above 800Mbps.
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> However, I learned that DPDK does not support wireless NICs now. Does DPDK have special requirements of today’s commodity wireless NIC hardware? If not, is it feasible to bring in support of DPDK for wireless NICs with modification *only* to the NIC driver? We want to work on this if the change to the driver is all we need.
>
There are no 802.11 wireless devices supported by DPDK and DPDK provides
raw packet access only, no TCP.
DPDK is generally not useful for data rates less than 1G bit/sec.
You either have slow CPU's or other TCP queuing issues (bufferbloat).
Checkout some of the queueing work in Linux and bufferbloat list.
next prev parent reply other threads:[~2019-11-25 18:29 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-20 3:59 Chengke Wang
2019-11-25 18:29 ` Stephen Hemminger [this message]
-- strict thread matches above, loose matches on Subject: below --
2017-05-04 10:54 Arun Kumar
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