netdev - RE: [PATCH net-next] net: ndisc.c: reduce size of __ndisc_fill_addr

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Date:   Wed, 31 May 2017 00:07:05 +0000
From:   YUAN Linyu <Linyu.Yuan@...atel-sbell.com.cn>
To:     David Ahern <dsahern@...il.com>, Joe Perches <joe@...ches.com>,
        "David Miller" <davem@...emloft.net>,
        "cugyly@....com" <cugyly@....com>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [PATCH net-next] net: ndisc.c: reduce size of
 __ndisc_fill_addr_option()



> -----Original Message-----
> From: David Ahern [mailto:dsahern@...il.com]
> Sent: Tuesday, May 30, 2017 11:42 AM
> To: Joe Perches; David Miller; cugyly@....com
> Cc: netdev@...r.kernel.org; YUAN Linyu
> Subject: Re: [PATCH net-next] net: ndisc.c: reduce size of
> __ndisc_fill_addr_option()
> 
> On 5/29/17 9:41 PM, Joe Perches wrote:
> > On Mon, 2017-05-29 at 23:30 -0400, David Miller wrote:
> >> From: yuan linyu <cugyly@....com>
> >> Date: Sat, 27 May 2017 06:00:52 +0800
> >>
> >>> From: yuan linyu <Linyu.Yuan@...atel-sbell.com.cn>
> >>>
> >>> Signed-off-by: yuan linyu <Linyu.Yuan@...atel-sbell.com.cn>
> >> Applied, thanks.
> > OK, but is it really safe though?
> >
> > Could "space" (an int) ever be negative after
> > subtracting "pad" and "data_len"?
> >
> 
> that function should be converted to skb_put_zero once it hits net-next.
I will check it