Re: 答复: [PATCH v4] net: netfilter: Fix rpfilter dropping vrf packets by mistake

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On Sat, Jun 29, 2019 at 02:13:59PM +0000, linmiaohe wrote:
> On 6/29/19 20:20 PM, David Ahern wrote:
> > On 6/28/19 8:13 PM, linmiaohe wrote:
> > > You're right. Fib rules code would set FLOWI_FLAG_SKIP_NH_OIF flag.  
> > > But I set it here for distinguish with the flags & XT_RPFILTER_LOOSE 
> > > branch. Without this, they do the same work and maybe should be  
> > > combined. I don't want to do that as that makes code confusing.
> > > Is this code snipet below ok ? If so, I would delete this flag setting.
> > >  
> > >        } else if (netif_is_l3_master(dev) || netif_is_l3_slave(dev)) {
> > >                fl6.flowi6_oif = dev->ifindex;
> > >         } else if ((flags & XT_RPFILTER_LOOSE) == 0)
> > >                 fl6.flowi6_oif = dev->ifindex;
> 
> > that looks fine to me, but it is up to Pablo.
> 
> @David Ahern  Many thanks for your valuable advice.
> 
> @ Pablo Hi, could you please tell me if this code snipet is ok?
> If not, which code would you prefer? It's very nice of you to
> figure it out for me. Thanks a lot.

Probably this?

        } else if (netif_is_l3_master(dev) || netif_is_l3_slave(dev) ||
                   (flags & XT_RPFILTER_LOOSE) == 0) {
                fl6.flowi6_oif = dev->ifindex;
        }

Thanks.



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