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

[Nguyen, Anthony L <anthony.l.nguyen@intel.com>]

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. 

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 | }