netdev - Re: [PATCH net] ipv6: set fc_protocol with 0 when rtm_protocol is RTPROT

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Date:   Mon, 31 Jul 2017 20:01:32 -0600
From:   David Ahern <dsahern@...il.com>
To:     Xin Long <lucien.xin@...il.com>
Cc:     network dev <netdev@...r.kernel.org>, davem <davem@...emloft.net>,
        Mantas Mikulėnas <grawity@...il.com>
Subject: Re: [PATCH net] ipv6: set fc_protocol with 0 when rtm_protocol is
 RTPROT_REDIRECT

On 7/31/17 7:40 PM, Xin Long wrote:
> To respect the old code more, setting RTPROT_RA only when
> it's with the flag (ADDRCONF | DEFAULT | ROUTEINFO),
> shouldn't it be:

Look at rtm_fill_info:

	if (rt->rt6i_flags & (RTF_DEFAULT | RTF_ROUTEINFO))
                        rtm->rtm_protocol = RTPROT_RA;


If either flag is set the protocol should be RTPROT_RA and looking at
both places that seems correct to me.