netdev - Re: [PATCH net-next 0/2] Ease nsid allocation

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Message-ID: <8eec279e-c617-b2a5-e802-4b6561cd2f94@6wind.com>
Date:   Fri, 4 Oct 2019 17:45:22 +0200
From:   Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:     Guillaume Nault <gnault@...hat.com>
Cc:     David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH net-next 0/2] Ease nsid allocation

Le 03/10/2019 à 18:19, Guillaume Nault a écrit :
[snip]
> Why not using the existing NLM_F_ECHO mechanism?
> 
> IIUC, if rtnl_net_notifyid() did pass the proper nlmsghdr and portid to
> rtnl_notify(), the later would automatically notify the caller with
> updated information if the original request had the NLM_F_ECHO flag.
> 
Good point. Note that with library like libnl, the auto sequence number check
will fail (seq number is 0 instead of the previous + 1) and thus must be bypassed.