[Intel-wired-lan] [PATCH net-next v3 3/5] ice: allow matching on meta data
Michal Swiatkowski
michal.swiatkowski at linux.intel.com
Thu Apr 6 11:32:04 UTC 2023
On Wed, Apr 05, 2023 at 03:31:01PM +0200, Alexander Lobakin wrote:
> From: Michal Swiatkowski <michal.swiatkowski at linux.intel.com>
> Date: Wed, 5 Apr 2023 09:51:11 +0200
>
> > Add meta data matching criteria in the same place as protocol matching
> > criteria. There is no need to add meta data as special words after
> > parsing all lookups. Trade meta data in the same why as other lookups.
> >
> > The one difference between meta data lookups and protocol lookups is
> > that meta data doesn't impact how the packets looks like. Because of that
> > ignore it when filling testing packet.
>
> [...]
>
> > --- a/drivers/net/ethernet/intel/ice/ice_switch.h
> > +++ b/drivers/net/ethernet/intel/ice/ice_switch.h
> > @@ -186,12 +186,14 @@ struct ice_adv_rule_flags_info {
> > };
> >
> > struct ice_adv_rule_info {
> > + /* Store metadata values in rule info */
> > enum ice_sw_tunnel_type tun_type;
> > u16 vlan_type;
> > u16 fltr_rule_id;
> > u32 priority;
> > struct ice_sw_act_ctrl sw_act;
> > struct ice_adv_rule_flags_info flags_info;
> > + u16 src_vsi;
>
> Minor: since these 2 bytes will introduce 2-byte hole or padding either
> way, I think it's okay to put this field somewhere around rule ID or
> priority, i.e. other primitives. So that when someone is adding new
> short field, he'll see there is a hole and use it. u16 after 2 big
> structures looks a bit off to me, sorry for the initial confusion with
> this "please no holes at all!11" -- it's highly desired, but not by
> sacrificing logical grouping :D
>
Good point, it looks a little strange, I will move it :)
Thanks,
Michal
> > };
> >
> > /* A collection of one or more four word recipe */
> [...]
>
> Thanks,
> Olek
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