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From: Nicolas Dichtel <nicolas.dichtel@6wind.com>
To: David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH net-next 0/2] Ease nsid allocation
Date: Wed, 2 Oct 2019 10:46:03 +0200	[thread overview]
Message-ID: <30d50c1d-d4c8-f339-816b-eb28ec4c0154@6wind.com> (raw)
In-Reply-To: <20191001.212027.1363612671973318110.davem@davemloft.net>

Le 02/10/2019 à 03:20, David Miller a écrit :
> From: Nicolas Dichtel <nicolas.dichtel@6wind.com>
> Date: Mon, 30 Sep 2019 18:02:12 +0200
> 
>> The goal of the series is to ease nsid allocation from userland.
>> The first patch is a preparation work and the second enables to receive the
>> new nsid in the answer to RTM_NEWNSID.
> 
> The new reply message could break existing apps.
> 
> If an app only performs netnsid operations, and fills up the receive
> queue because it isn't reading these new replies (it had no reason to,
> they didn't exist previously), operations will start failing that
> would not fail previously because the receive queue is full.
Yes I see the problem. I was wondering if this was acceptable because the nl ack
is sent at the end. But nl ack are optional :/

> 
> Given this, I don't see how we can make the change.
> 
Is a new flag attribute ok to turn on this reply?


Thank you,
Nicolas

  reply	other threads:[~2019-10-02  8:46 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-30 16:02 [PATCH net-next 0/2] Ease nsid allocation Nicolas Dichtel
2019-09-30 16:02 ` [PATCH net-next 1/2] netns: move rtnl_net_get_size() and rtnl_net_fill() Nicolas Dichtel
2019-09-30 16:02 ` [PATCH net-next 2/2] netns/rtnl: return the new nsid to the user Nicolas Dichtel
2019-10-02  1:20 ` [PATCH net-next 0/2] Ease nsid allocation David Miller
2019-10-02  8:46   ` Nicolas Dichtel [this message]
2019-10-02 14:58     ` David Miller
2019-10-03 16:19     ` Guillaume Nault
2019-10-04 15:45       ` Nicolas Dichtel
2019-10-08 23:00         ` Guillaume Nault
2019-10-07 11:58       ` [PATCH net] netns: fix NLM_F_ECHO mechanism for RTM_NEWNSID Nicolas Dichtel
2019-10-08 23:10         ` Guillaume Nault
2019-10-09  8:07           ` Nicolas Dichtel
2019-10-09 13:48             ` Guillaume Nault
2019-10-09  9:19           ` [PATCH net v2] " Nicolas Dichtel
2019-10-09 13:48             ` Guillaume Nault
2019-10-10  4:06             ` Jakub Kicinski

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