netdev - Re: [PATCH iproute2-next v3] iproute2: Add 'netshaper' command to 'ip link' for netdev shaping

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250821104919.GB7364@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net>
Date: Thu, 21 Aug 2025 03:49:19 -0700
From: Erni Sri Satya Vennela <ernis@...ux.microsoft.com>
To: Stephen Hemminger <stephen@...workplumber.org>
Cc: dsahern@...il.com, netdev@...r.kernel.org, haiyangz@...rosoft.com,
	shradhagupta@...ux.microsoft.com, ssengar@...rosoft.com,
	dipayanroy@...rosoft.com, ernis@...rosoft.com
Subject: Re: [PATCH iproute2-next v3] iproute2: Add 'netshaper' command to
 'ip link' for netdev shaping

On Sat, Aug 16, 2025 at 03:55:10PM -0700, Stephen Hemminger wrote:
> On Mon, 11 Aug 2025 00:05:02 -0700
> Erni Sri Satya Vennela <ernis@...ux.microsoft.com> wrote:
> 
> > Add support for the netshaper Generic Netlink
> > family to iproute2. Introduce a new subcommand to `ip link` for
> > configuring netshaper parameters directly from userspace.
> > 
> > This interface allows users to set shaping attributes (such as speed)
> > which are passed to the kernel to perform the corresponding netshaper
> > operation.
> > 
> > Example usage:
> > $ip link netshaper { set | get | delete } dev DEVNAME \
> >                    handle scope SCOPE id ID \
> >                    [ speed SPEED ]
> 
> 
> The choice of ip link is awkward and doesn't match other options.
> I can think of some better other choices:
> 
>   1. netshaper could be a property of the device. But the choice of using genetlink
>      instead of regular ip netlink attributes makes this hard.
>   2. netshaper could be part of devlink. Since it is more targeted at hardware
>      device attributes.
>   3. netshaper could be a standalone command like bridge, dcb, devlink, rdma, tipc and vdpa.
> 
> What ever choice the command line options need to follow similar syntax to other iproute commands.

Thankyou for the suggestions.
After internal discussions, I have decided to proceed with
implementing netshaper as a standalone command.