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Date:   Tue, 8 Sep 2020 08:42:08 -0600
From:   David Ahern <dsahern@...il.com>
To:     Jiri Pirko <jiri@...nulli.us>, Ido Schimmel <idosch@...sch.org>
Cc:     netdev@...r.kernel.org, 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 8:39 AM, Jiri Pirko wrote:
> Tue, Sep 08, 2020 at 11:10:18AM CEST, idosch@...sch.org 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:
> 
> Well, in theory, this might break some very odd app that is adding a
> route and checking the errors using this notification. My opinion is to
> allow this breakage to happen, but I'm usually too benevolent :)
> 

That would be a very twisted app.

No other notifications go out on failure to add / replace and nexthops
should be consistent.

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