netdev - Re: [RFC PATCH net-next 03/22] nexthop: Only emit a notification when nexthop is actually deleted

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Message-ID: <b0168f8b-8a45-680b-80d8-ed58294774a5@gmail.com>
Date:   Tue, 8 Sep 2020 08:34:45 -0600
From:   David Ahern <dsahern@...il.com>
To:     Ido Schimmel <idosch@...sch.org>, netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, roopa@...dia.com,
        mlxsw@...dia.com, Ido Schimmel <idosch@...dia.com>
Subject: Re: [RFC PATCH net-next 03/22] nexthop: Only emit a notification when
 nexthop is actually deleted

On 9/8/20 3:10 AM, Ido Schimmel wrote:
> From: Ido Schimmel <idosch@...dia.com>
> 
> Currently, the delete notification is emitted from the error path of
> nexthop_add() and replace_nexthop(), which can be confusing to listeners
> as they are not familiar with the nexthop.
> 
> Instead, only emit the notification when the nexthop is actually
> deleted. The following sub-cases are covered:
> 
> 1. User space deletes the nexthop
> 2. The nexthop is deleted by the kernel due to a netdev event (e.g.,
>    nexthop device going down)
> 3. A group is deleted because its last nexthop is being deleted
> 4. The network namespace of the nexthop device is deleted
> 
> Signed-off-by: Ido Schimmel <idosch@...dia.com>
> ---
>  net/ipv4/nexthop.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 

Reviewed-by: David Ahern <dsahern@...il.com>