Re: Why only rx queue "0" can receive network packet by i40e NIC

["lhffjzh" <lhffjzh-KN7UnAbNpbg@public.gmane.org>]

Hi Helin,

Thanks a lot for your great help, all of rx queue
received network packet after I update rss_hf 
from "ETH_RSS_IP" to " ETH_RSS_PROTO_MASK ". 

static struct rte_eth_conf port_conf = {
    .rxmode = {
        .mq_mode        = ETH_MQ_RX_RSS,
        .max_rx_pkt_len = ETHER_MAX_LEN,
        .split_hdr_size = 0,
        .header_split   = 0, /**< Header Split disabled */
        .hw_ip_checksum = 1, /**< IP checksum offload enabled */
        .hw_vlan_filter = 0, /**< VLAN filtering disabled */
        .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
        .hw_strip_crc   = 0, /**< CRC stripped by hardware */
    },
    .rx_adv_conf = {
        .rss_conf = {
            .rss_key = NULL,
            .rss_hf = ETH_RSS_PROTO_MASK,
        },
    },
    .txmode = {
        .mq_mode = ETH_MQ_TX_NONE,
    },
    .fdir_conf.mode = RTE_FDIR_MODE_SIGNATURE,
};


Regards,
Haifeng

-----Original Message-----
From: Zhang, Helin [mailto:helin.zhang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org] 
Sent: Saturday, February 28, 2015 11:18 AM
To: lhffjzh; 'Thomas Monjalon'
Cc: dev-VfR2kkLFssw@public.gmane.org; maintainers-VfR2kkLFssw@public.gmane.org
Subject: RE: [dpdk-dev] Why only rx queue "0" can receive network packet by
i40e NIC

Hi Haifeng

> -----Original Message-----
> From: dev [mailto:dev-bounces-VfR2kkLFssw@public.gmane.org] On Behalf Of lhffjzh
> Sent: Saturday, February 28, 2015 9:48 AM
> To: 'Thomas Monjalon'
> Cc: dev-VfR2kkLFssw@public.gmane.org; maintainers-VfR2kkLFssw@public.gmane.org
> Subject: Re: [dpdk-dev] Why only rx queue "0" can receive network packet
by
> i40e NIC
> 
> Hi Thomas,
> 
> Thanks very much for your reminder, you give me many help in this mail
list.
> 
> The issue with detailed information just as below. but I don't know who is
the
> dpdk i40e maintainers? is maintainers-VfR2kkLFssw@public.gmane.org?
> 
> Hardware list:
>     2 i40e 40G NICs
>     Xeon E5-2670 v2(10 cores)
>     32G memory
> 
> I loopback 2 i40e NICs by QSFP cable, one NIC send UDP network packet by
> DPDK, and another for receiving. I bind 4 processor's logical cores with 4
rx
> queue "0,1,2,3" on receiving NIC, when I start to send packet, only rx
queue
> "0"
> can receive
> the UDP packet, the others queue always receive nothing. but it is work
well on
> ixgbe 10G NICs, I can receive network packet from all rx queues. does
anyone
> kindly know why?
Could you help to list the DPDK version you are using now?
Two possible reasons:
1. UDP rss is not enabled on your board correctly.
	I40e has different rss flags from ixgbe, so I am wondering if you
use it correctly.
	In addition, this will be unified from 2.0. So I care about the DPDK
version.
2. The UDP stream is occasionally hit the hash key of queue 0.
	You'd better to try to send your UDP stream with random 5-tuples, to
get the
	hash value hit different queues randomly.

Regards,
Helin

> 
> 
> Regards,
> Haifeng
> 
> -----Original Message-----
> From: Thomas Monjalon [mailto:thomas.monjalon-pdR9zngts4EAvxtiuMwx3w@public.gmane.org]
> Sent: Friday, February 27, 2015 6:55 PM
> To: lhffjzh
> Cc: dev-VfR2kkLFssw@public.gmane.org
> Subject: Re: Why only rx queue "0" can receive network packet by i40e NIC
> 
> 2015-02-27 16:47, lhffjzh:
> > Hi All,
> >
> > We use 4 cores loop 4 rx queues on one i40e port, but only rx queue "0"
> can
> > receive network packet, do anyone kindly know why? BTW, all of network
> > packet has same destination ip address but has more than 200 different
> > source ip address.
> 
> It's possible that you don't have any answer for 2 reasons:
> - you replied in a thread dedicated to Cisco enic questions
> - you didn't describe your usage enough to understand your problem
> 
> I suggest to use the button "new email" instead of "reply all" to
> start a new question with enough details.
> 
> Did you noticed you put some Cisco guys in CC instead of putting the
> Intel responsible for i40e (see MAINTAINERS file)?
>