From: Wei Wang <wei...@google.com> Date: Wed, May 15, 2019 at 10:25 AM To: David Ahern Cc: Wei Wang, David Miller, Linux Kernel Network Developers, Martin KaFai Lau, Mikael Magnusson, Eric Dumazet
> > > > What about rt6_remove_exception_rt? > > > > You can add a 'cache' hook to ip/iproute.c to delete the cached routes > > and verify that it works. I seem to have misplaced my patch to do it. > I don't think rt6_remove_exception_rt() needs any change. > It is because it gets the route cache rt6_info as the input parameter, > not specific saddr or daddr from a flow or a packet. > It is guaranteed that the hash used in the exception table is > generated from rt6_info->rt6i_dst and rt6_info->rt6i_src. > > For the case where user tries to delete a cache route, ip6_route_del() > calls rt6_find_cached_rt() to find the cached route first. And > rt6_find_cached_rt() is taken care of to find the cached route > according to both passed in src addr and f6i->fib6_src. > So I think we are good here. > > From: David Ahern <dsah...@gmail.com> > Date: Wed, May 15, 2019 at 9:38 AM > To: Wei Wang, David Miller, <netdev@vger.kernel.org> > Cc: Martin KaFai Lau, Wei Wang, Mikael Magnusson, Eric Dumazet > > > On 5/15/19 9:56 AM, David Ahern wrote: > > > You can add a 'cache' hook to ip/iproute.c to delete the cached routes > > > and verify that it works. I seem to have misplaced my patch to do it. > > > > found it. Thanks. I patched it to iproute2 and tried it. The route cache is removed by doing: ip netns exec a ./ip -6 route del fd01::c from fd00::a cache
