From: Stephen Hemminger <stephen@networkplumber.org>
To: Vincent <techburgher@gmail.com>
Cc: users@dpdk.org
Subject: Re: DPDK lacp bonding - xmit hash
Date: Wed, 18 Sep 2024 16:36:31 -0700 [thread overview]
Message-ID: <20240918163631.6b392485@hermes.local> (raw)
In-Reply-To: <CAMj4T0zFKmX0Jv_mCy1=n=MKtztySygXnjCOnUNzOeVWp1JmQA@mail.gmail.com>
On Wed, 18 Sep 2024 18:20:53 -0400
Vincent <techburgher@gmail.com> wrote:
> What determines what xmit_hash_policy DPDK will use for LACP bonded links?
> Does it not respect the value specified by
> /sys/class/net/<INTERFACE>/bonding/xmit_hash_policy?
>
> Based on testing, it seems like layer2, or layer3+4 hashing is being done,
> but the behavior is random, and seems to not necessarily reflect the
> current value specified by
> /sys/class/net/<INTERFACE>/bonding/xmit_hash_policy.
>
> Thank you,
>
> Vincent
DPDK doesn't use the Linux kernel network interfaces.
The DPDK PMD is a completely separate user mode driver.
https://doc.dpdk.org/guides/prog_guide/link_bonding_poll_mode_drv_lib.html
The similar function DPDK bond PMD is the Balance XOR (Mode 2).
The configuration of the hash type is done via:
rte_eth_bond_xmit_policy_set()
prev parent reply other threads:[~2024-09-18 23:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-18 22:20 Vincent
2024-09-18 23:36 ` Stephen Hemminger [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=20240918163631.6b392485@hermes.local \
--to=stephen@networkplumber.org \
--cc=techburgher@gmail.com \
--cc=users@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).