netdev - Re: [PATCH net-next, v3] netlink: add IPv6 anycast join/leave notifications

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Message-ID: <00d56d29-3b01-4343-8a58-0d6b31c78fa6@redhat.com>
Date: Thu, 9 Jan 2025 12:53:49 +0100
From: Paolo Abeni <pabeni@...hat.com>
To: Yuyang Huang <yuyanghuang@...gle.com>
Cc: "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 Simon Horman <horms@...nel.org>, David Ahern <dsahern@...nel.org>,
 roopa@...ulusnetworks.com, jiri@...nulli.us, stephen@...workplumber.org,
 jimictw@...gle.com, prohr@...gle.com, liuhangbin@...il.com,
 nicolas.dichtel@...nd.com, andrew@...n.ch, netdev@...r.kernel.org,
 Maciej Żenczykowski <maze@...gle.com>,
 Lorenzo Colitti <lorenzo@...gle.com>
Subject: Re: [PATCH net-next, v3] netlink: add IPv6 anycast join/leave
 notifications

On 1/7/25 12:43 PM, Yuyang Huang wrote:
> This change introduces a mechanism for notifying userspace
> applications about changes to IPv6 anycast addresses via netlink. It
> includes:
> 
> * Addition and deletion of IPv6 anycast addresses are reported using
>   RTM_NEWANYCAST and RTM_DELANYCAST.
> * A new netlink group (RTNLGRP_IPV6_ACADDR) for subscribing to these
>   notifications.
> 
> This enables user space applications(e.g. ip monitor) to efficiently
> track anycast addresses through netlink messages, improving metrics
> collection and system monitoring. It also unlocks the potential for
> advanced anycast management in user space, such as hardware offload
> control and fine grained network control.
> 
> Cc: Maciej Żenczykowski <maze@...gle.com>
> Cc: Lorenzo Colitti <lorenzo@...gle.com>
> Signed-off-by: Yuyang Huang <yuyanghuang@...gle.com>

Please note that you could have retained the Eric gave on v2.

No need for further changes here, but please follow-up with some
self-tests triggering the new code path.

Thanks,

Paolo