[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <1715174806.2456756-1-hengqi@linux.alibaba.com>
Date: Wed, 8 May 2024 21:26:46 +0800
From: Heng Qi <hengqi@...ux.alibaba.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: netdev@...r.kernel.org,
virtualization@...ts.linux.dev,
"David S . Miller" <davem@...emloft.net>,
Paolo Abeni <pabeni@...hat.com>,
Eric Dumazet <edumazet@...gle.com>,
Jason Wang <jasowang@...hat.com>,
"Michael S . Tsirkin" <mst@...hat.com>,
Brett Creeley <bcreeley@....com>,
Ratheesh Kannoth <rkannoth@...vell.com>,
Alexander Lobakin <aleksander.lobakin@...el.com>,
Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
Tal Gilboa <talgi@...dia.com>,
Jonathan Corbet <corbet@....net>,
linux-doc@...r.kernel.org,
Maxime Chevallier <maxime.chevallier@...tlin.com>,
Jiri Pirko <jiri@...nulli.us>,
Paul Greenwalt <paul.greenwalt@...el.com>,
Ahmed Zaki <ahmed.zaki@...el.com>,
Vladimir Oltean <vladimir.oltean@....com>,
Kory Maincent <kory.maincent@...tlin.com>,
Andrew Lunn <andrew@...n.ch>,
justinstitt@...gle.com,
Simon Horman <horms@...nel.org>
Subject: Re: [PATCH net-next v12 2/4] ethtool: provide customized dim profile management
On Tue, 7 May 2024 19:57:52 -0700, Jakub Kicinski <kuba@...nel.org> wrote:
> On Sat, 4 May 2024 14:44:45 +0800 Heng Qi wrote:
> > @@ -1325,6 +1354,8 @@ operations:
> > - tx-aggr-max-bytes
> > - tx-aggr-max-frames
> > - tx-aggr-time-usecs
> > + - rx-profile
> > + - tx-profil
> > dump: *coalesce-get-op
> > -
> > name: coalesce-set
>
> set probably needs to get the new attributes, too?
I looked at other similar use cases (such as wol, debug) and it doesn't
seem to be needed?
>
> > +static int ethnl_update_profile(struct net_device *dev,
> > + struct dim_cq_moder __rcu **dst,
> > + const struct nlattr *nests,
> > + struct netlink_ext_ack *extack)
>
> > + rcu_assign_pointer(*dst, new_profile);
> > + kfree_rcu(old_profile, rcu);
> > +
> > + return 0;
>
> Don't we need to inform DIM somehow that profile has switched
> and it should restart itself?
When the profile is modified, dim itself is a dynamic adjustment mechanism
and will quickly adjust to the appropriate value according to the new profile.
This is also seen in practice.
Thanks!
Powered by blists - more mailing lists