From: Yasuhiro Ohara <yasu@nttv6.jp>
To: beilei.xing@intel.com
Cc: bruce.richardson@intel.com, dev@dpdk.org
Subject: Re: ETH_RSS_IP only does not seem to balance traffic
Date: Fri, 14 Jan 2022 10:55:31 +0900 (JST) [thread overview]
Message-ID: <20220114.105531.1132656450767243889.yasu@nttv6.jp> (raw)
In-Reply-To: <DM6PR11MB3098E698BC0A31AE3ABA9099F7549@DM6PR11MB3098.namprd11.prod.outlook.com>
Thank you for the confirmation!
Best regards,
Yasu
From: "Xing, Beilei" <beilei.xing@intel.com>
Subject: RE: ETH_RSS_IP only does not seem to balance traffic
Date: Fri, 14 Jan 2022 01:44:45 +0000
Message-ID: <DM6PR11MB3098E698BC0A31AE3ABA9099F7549@DM6PR11MB3098.namprd11.prod.outlook.com>
>
>
>> -----Original Message-----
>> From: Richardson, Bruce <bruce.richardson@intel.com>
>> Sent: Thursday, January 13, 2022 11:06 PM
>> To: Yasuhiro Ohara <yasu@nttv6.jp>
>> Cc: dev@dpdk.org; Xing, Beilei <beilei.xing@intel.com>
>> Subject: Re: ETH_RSS_IP only does not seem to balance traffic
>>
>> On Thu, Jan 13, 2022 at 12:52:04AM +0900, Yasuhiro Ohara wrote:
>> >
>> > Hi,
>> >
>> > My system developper friend recently ran into a problem where l3fwd
>> > does not appear to receive balanced traffic on Intel XL710, but it is
>> > resolved when the attached patch is applied.
>> >
>> > - .rss_hf = ETH_RSS_IP,
>> > + .rss_hf = ETH_RSS_IP | ETH_RSS_TCP | ETH_RSS_UDP,
>> >
>> > IIRC I ran into a similar problem 3 or 4 years back, but didn't report
>> > then because I believed I was doing something silly.
>> > But since my friend is an experienced engineer, I feel like it may be
>> > better (for the community) to ask this in the list.
>> >
>> > We are using dpdk-stable-18.11.6 and igb_uio.
>> >
>> > What are we doing wrong?
>> >
>> > If it is not a FAQ, I can test it again with more recent stable, and
>> > will report the details.
>> >
>> For XL710 NICs, I believe that ETH_RSS_IP load balances only IP frames that do
>> not have TCP or UDP headers also. Adding i40e driver maintainer on CC to
>> comment further.
>
> Yes, Bruce is right. For XL710, ETH_RSS_IP doesn't cover TCP and UDP packets.
>
>>
>> /Bruce
>
prev parent reply other threads:[~2022-01-14 1:55 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-12 15:52 Yasuhiro Ohara
2022-01-13 15:05 ` Bruce Richardson
2022-01-14 1:41 ` Yasuhiro Ohara
2022-01-14 1:44 ` Xing, Beilei
2022-01-14 1:55 ` Yasuhiro Ohara [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220114.105531.1132656450767243889.yasu@nttv6.jp \
--to=yasu@nttv6.jp \
--cc=beilei.xing@intel.com \
--cc=bruce.richardson@intel.com \
--cc=dev@dpdk.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).