Thanks.

I'll look forward to a patch from you to keep slow_path flows.

On Tue, Feb 06, 2018 at 08:08:32PM +0800, Huanle Han wrote:
> "ODP_FIT_TOO_LITTLE" patches are good to me.
> 
> On Tue, Feb 6, 2018 at 1:31 AM, Ben Pfaff <b...@ovn.org> wrote:
> > That sounds like a good idea.  Do you want to try to write up a patch
> > for that approach?
> >
> > The current series still seems like a good idea to me, do you have an
> > opinion?
> >
> > On Mon, Feb 05, 2018 at 07:57:20PM +0800, Huanle Han wrote:
> >> The patches make "ODP_FIT_TOO_LITTLE" logic more clear for me.
> >> But it seems not fix the problem I mentioned at beginnig:
> >> revalidate_ukey__() always return UKEY_DELETE for igmp, because
> >> flow_wildcards_has_extra() return true.
> >>
> >> Should we UKEY_KEEP igmp or other "ODP_FIT_TOO_LITTLE" flows whose
> >> action is already "slow_path(action, match)" ?
> >>
> >> On Thu, Jan 25, 2018 at 3:40 AM, Ben Pfaff <b...@ovn.org> wrote:
> >> > OVS datapaths don't understand or parse IGMP fields, but OVS userspace
> >> > does, so this commit updates odp_flow_key_to_flow() to report that 
> >> > properly
> >> > to the caller.
> >> >
> >> > Reported-by: Huanle Han <hanxue...@gmail.com>
> >> > Reported-at: 
> >> > https://mail.openvswitch.org/pipermail/ovs-dev/2018-January/343665.html
> >> > Signed-off-by: Ben Pfaff <b...@ovn.org>
> >> > ---
> >> >  lib/odp-util.c | 5 +++++
> >> >  1 file changed, 5 insertions(+)
> >> >
> >> > diff --git a/lib/odp-util.c b/lib/odp-util.c
> >> > index 6a29a76de5cd..67fd538e8aea 100644
> >> > --- a/lib/odp-util.c
> >> > +++ b/lib/odp-util.c
> >> > @@ -6210,6 +6210,11 @@ parse_l2_5_onward(const struct nlattr 
> >> > *attrs[OVS_KEY_ATTR_MAX + 1],
> >> >                  }
> >> >              }
> >> >          }
> >> > +    } else if (src_flow->nw_proto == IPPROTO_IGMP
> >> > +               && src_flow->dl_type == htons(ETH_TYPE_IP)) {
> >> > +        /* OVS userspace parses the IGMP type, code, and group, but its
> >> > +         * datapaths do not, so there is always missing information. */
> >> > +        return ODP_FIT_TOO_LITTLE;
> >> >      }
> >> >      if (is_mask && expected_bit != OVS_KEY_ATTR_UNSPEC) {
> >> >          if ((flow->tp_src || flow->tp_dst) && flow->nw_proto != 0xff) {
> >> > --
> >> > 2.10.2
> >> >
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