netdev - Re: [PATCH net-next v4 1/2] net sched actions: dump more than TCA_ACT_MAX

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Message-Id: <20170420.112340.1425759737710664373.davem@davemloft.net>
Date:   Thu, 20 Apr 2017 11:23:40 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     eric.dumazet@...il.com
Cc:     jhs@...atatu.com, jiri@...nulli.us, netdev@...r.kernel.org,
        xiyou.wangcong@...il.com
Subject: Re: [PATCH net-next v4 1/2] net sched actions: dump more than
 TCA_ACT_MAX_PRIO actions per batch

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Thu, 20 Apr 2017 05:18:14 -0700

> By changing the kernel and recognizing new flags in existing padding,
> you might break the programs.
> 
> This is not acceptable. Period.
> 
> Had we checked the padding being 0 in old kernels, this change would
> have been possible today.

I completely agree.