Re: [dpdk-dev] Is there any example application to used DPDK packet distributor library?

[최익성 <pnk003@naver.com>]

 Dear Bruce Richardson and DPDK experts.
 
Thank you very much for your precious answer.
 
I found it. It seems very short and simple.
 
Thank you very much.
 
I have another question.
 
I don't know how the following steps work from new_tag to match variables.
 
/* in dpdk library. ~/dpdk-?.?.?/lib/librte_distributor/rte_distributor.c */
/* process a set of packets to distribute them to workers */
rte_distributor_process(struct rte_distributor *d, struct rte_mbuf **mbufs, unsigned num_mbufs)
{
...
     new_tag = next_mb->hash.usr;  /* flow ID hash.usr is set by NIC */
 
     for (i = 0; i < d->num_workers; i++)
          match |= (!(d->in_flight_tags[i] ^ new_tag) << i);
 
     /* Only turned-on bits are considered as match */
     match &= d->in_flight_bitmask;
 
     unsigned worker = __builtin_ctzl(match);
...
}
 
I will appreciate if you let me know the steps.
 
Thank you very much.
 
Sincerely Yours,
 
Ick-Sung Choi.
 
 
-----Original Message-----
From: "Bruce Richardson"<bruce.richardson@intel.com> 
To: "최익성"<pnk003@naver.com>; 
Cc: <dev@dpdk.org>; 
Sent: 2015-09-30 (수) 19:56:28
Subject: Re: [dpdk-dev] Is there any example application to used DPDK packet distributor library?
 
On Wed, Sep 30, 2015 at 02:45:20PM +0900, 최익성 wrote:
> Dear DPDK experts.
>  
> I am Ick-Sung Choi living in South Korea.
>  
> I have a question about DPDK에 packet distributor library.
>  
> Is there any example application to used DPDK packet distributor library?
>  
> I am trying to experiment simple function using DPDK packet distributor library.
>  
> If I can study an example application of DPDK packet distributor library, it would be very helpful for my experiment.
>  
> I will appreciate if I can be given any example applications, advice, and information.
>  
> Thank you very much.
>  
> Sincerely Yours,
>  
> Ick-Sung Choi.
>  
Hi,

there is a "distributor" example app in the examples directory.

/Bruce