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Date: Sun, 10 Aug 2014 11:11:27 -0700
From: Stephen Hemminger <stephen@networkplumber.org>
To: Kai Zhang <zhang.4522@osu.edu>
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Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] Problem in multi-queue receiving
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On Sat, 9 Aug 2014 11:59:24 -0400
Kai Zhang <zhang.4522@osu.edu> wrote:

> Hi there,
> 
> I have a problem for multi-queue receiving.
> 
> For a specific application, I am not using the lcore abstractions in DPDK.
> I launch rx and tx threads seperately. For one port with N queues, I
> launched N rx threads and N tx threads, with each thread in charge of
> receiving or sending only one queue.
> 
> The tx threads work on their own queues well. However, all received packets
> only go to queue 0 rx thread, and other rx threads receive nothing.
> 
> My code is at :
> https://github.com/kay21s/dpdk/blob/master/examples/pthread/main.c
> It has a default NUM_QUEUE=2, which means port 0 is configured with 2
> queues, and 2 rx threads and 2 tx threads are launched.
> Is there any problem in my implementation? or DPDK does not support it?
> 
> Thanks a lot!
> Kai

You aren't rxmode.mq_mode therefore you are getting the default value
of 0 == ETH_MQ_RX_NONE. You should set it to ETH_MQ_RX_RSS to enable
RSS mode.