On Mon, Apr 20, 2015 at 02:23:05PM -0400, David Miller wrote: > From: Martin KaFai Lau <ka...@fb.com> > Date: Fri, 10 Apr 2015 18:54:09 -0700 > > > Before patch 'Allow pmtu update on /128 via gateway route', > > RTF_CACHE route was not created for DST_HOST. It also requires changes on > > both > > delete code path and rt6_select() code patch. > > > > This patch fixes the delete code path to avoid deleting the RTF_CACHE > > route by 'ip -6 r del...' > > > > Signed-off-by: Martin KaFai Lau <ka...@fb.com> > > Reviewed-by: Hannes Frederic Sowa <han...@stressinduktion.org> > > If a cached route was created in response to say a PMTU event, and > it's a clone/copy/cow of the route we are being asked to delete, > it absolutely should be removed. > > In fact this is a critically important aspect of removing routes > from the table. When a non-clone routes are removed, its clones are removed together by fib6_prune_clones() in fib6_del().
Hence, 'ip -6 r del' will remove a route and its clones. 'ip -6 r flush table cache will only remove RTF_CACHE routes. I will fix up the commit message. Thanks, --Martin -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
