netdev - Re: [PATCHv2 net-next 1/6] sctp: add sctp_info dump api for sctp

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Message-ID: <1460222507.6473.493.camel@edumazet-glaptop3.roam.corp.google.com>
Date:	Sat, 09 Apr 2016 10:21:47 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Jamal Hadi Salim <jhs@...atatu.com>
Cc:	Xin Long <lucien.xin@...il.com>,
	network dev <netdev@...r.kernel.org>,
	linux-sctp@...r.kernel.org,
	Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
	Vlad Yasevich <vyasevich@...il.com>, daniel@...earbox.net,
	davem@...emloft.net
Subject: Re: [PATCHv2 net-next 1/6] sctp: add sctp_info dump api for
 sctp_diag

On Sat, 2016-04-09 at 11:19 -0400, Jamal Hadi Salim wrote:
> On 16-04-09 01:16 AM, Eric Dumazet wrote:
> 
> >
> > Lots of holes in this structure...
> >
> >
> 
> 
> I may have mentioned to you that there is 8 bit hole in tcp_info too ;->
> (above tcpi_rto). Adding an 8 bit explicit pad seems useful
> since it is already in the wild. I was going to send the patch after
> netdev11 but  forgot.

Well, once a hole is there, nothing we can do really, because of
compatibility with old kernels / old binaries.


But when a _new_ structure is defined, this is the time where we can ask
for doing sensible things ;)