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

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Message-ID: <8729016553E3654398EA69218DA29EEF15BB29A7@cnshjmbx02>
Date:   Wed, 31 May 2017 00:29:05 +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
I can't find skb_put_zero