[Intel-wired-lan] [PATCH net-next 07/12] ice: setting and releasing switchdev environment

[Michal Swiatkowski <michal.swiatkowski@linux.intel.com>]

On Mon, Jun 21, 2021 at 06:21:15PM +0000, Nguyen, Anthony L wrote:
> On Fri, 2021-06-18 at 01:44 +0200, Michal Swiatkowski wrote:
> > From: Grzegorz Nitka <grzegorz.nitka@intel.com>
> > 
> > Switchdev environment has to be set up when user create VFs
> > and eswitch mode is switchdev. Release is done when user
> > delete all VFs.
> > 
> > Data path in this implementation is based on control plane VSI.
> > This VSI is used to pass traffic from port representors to
> > coresponfing VFs and vice versa. Default TX rule has to be
> > added to forward packet to control plane VSI. This will redirect
> > packets from VFs which don't match other rules to control plane
> > VSI.
> > 
> > On RX site default rule is added on uplink VSI to receive all
> > traffic that doesn't match other rules. When setting switchdev
> > environment all other rules from VFs should be removed. Packet to
> > VFs will be forwarded by control plane VSI.
> > 
> > As VF without any mac rules can't send any packet because of
> > antispoof mechanism, VSI antispoof should be turned off on each VFs.
> > 
> > To send packet from representor to correct VSI, destintion VSI
> > field in TX descriptor will have to be filled. Allow that by
> > setting destination override bit in control plane VSI security
> > config.
> > 
> > Packet from VFs will be received on control plane VSI. Driver
> > should decide to which netdev forward the packet. Decision is
> > made based on src_vsi field from descriptor. There is a target
> > netdev list in control plane VSI struct which choose netdev
> > based on src_vsi number.
> > 
> > Co-developed-by: Michal Swiatkowski <
> > michal.swiatkowski at linux.intel.com>
> > Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com
> > >
> > Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com>
> > ---
> 
> <snip>
> 
> > +/**
> > + * ice_eswitch_vsi_setup - configure switchdev control VSI
> > + * @pf: pointer to PF structure
> > + * @pi: pointer to port_info structure
> > + */
> > +static struct ice_vsi *
> > +ice_eswitch_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi)
> > +{
> > +	return ice_vsi_setup(pf, pi, ICE_VSI_SWITCHDEV_CTRL,
> > ICE_INVAL_VFID);
> 
> This doesn't build; the switchdev VSI doesn't get introduced until the
> next patch. 
> 

Sorry, I missed that, will fix it in next version.

> drivers/net/ethernet/intel/ice/ice_eswitch.c: In function
> ice_eswitch_vsi_setup:
> drivers/net/ethernet/intel/ice/ice_eswitch.c:263:31: error:
> ICE_VSI_SWITCHDEV_CTRL undeclared (first use in this function)
>   263 |  return ice_vsi_setup(pf, pi, ICE_VSI_SWITCHDEV_CTRL,
> ICE_INVAL_VFID);
>       |                               ^~~~~~~~~~~~~~~~~~~~~~
> drivers/net/ethernet/intel/ice/ice_eswitch.c:263:31: note: each
> undeclared identifier is reported only once for each function it
> appears in
> drivers/net/ethernet/intel/ice/ice_eswitch.c:264:1: error: control
> reaches end of non-void function [-Werror=return-type]
>   264 | }
>