Subject: Re: [PATCH net-next] netem: add cell concept to simulate special MAC behavior

From: Stephen Hemminger <[email-masked]>
Date: Mon, 12 Dec 2011 09:18:58 -0800

On Sat, 10 Dec 2011 17:43:52 +0100
Eric Dumazet <[email-masked]> wrote:

> >  struct tc_netem_rate {
> >  	__u32	rate;	/* byte/s */
> > +	__s32	packet_overhead;
> > +	__u32	cell_size;
> > +	__s32	cell_overhead;  
> 
> Adding fields in existing structure is convenient, but this means a
> previous tc binary wont work anymore.

In this case it is ok because there  has not been a release
using this structure yet.