[Intel-wired-lan] [PATCH v4] i40e: Add macvlan support on i40e

[Brown, Aaron F]

> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at osuosl.org] On Behalf Of
> Harshitha Ramamurthy
> Sent: Wednesday, March 13, 2019 10:03 AM
> To: intel-wired-lan at lists.osuosl.org
> Subject: [Intel-wired-lan] [PATCH v4] i40e: Add macvlan support on i40e
> 
> This patch enables macvlan offloads for i40e. The idea is to use
> channels as macvlan interfaces. The channels are VSIs of
> type VMDQ. When the first macvlan is created, the maximum number of
> channels possible are created. From then on, as a macvlan interface
> is created, a mac filter is added to these already created channels
> (VSIs).
> 
> This patch builds on top of the recent changes which move
> away from the select_queue implementation of picking the tx queue.
> 
> Steps to configure macvlan offloads:
> 1. sudo ethtool -K ens261f1 l2-fwd-offload on
> 2. ip link add link ens261f1 name macvlan1 type macvlan
> 3. sudo ip link add link ens261f1 name macvlan1 type macvlan
> 4. sudo ip link set macvlan1 up
> 
> Signed-off-by: Harshitha Ramamurthy <harshitha.ramamurthy at intel.com>
> ---
> v4: Added code to check for a non-empty list of macvlans before deleting them
> 
> v3: Renamed i40e_remove_macvlan_channels() to
> i40e_free_macvlan_channels()
>     Fixed an indentation issue and added some comments
>     Removed a code name from the commit message
>     Addressed some more of Shannon's comments
> 
> v2: Addressed Shannon's comments
>     Added a new function to remove all macvlan VSIs
> 
>  drivers/net/ethernet/intel/i40e/i40e.h      |  26 ++
>  drivers/net/ethernet/intel/i40e/i40e_main.c | 484 +++++++++++++++++++-
>  2 files changed, 508 insertions(+), 2 deletions(-)
> 

Step 2 and 3 in the example to configure macvlans are the same except for the use of sudo (which I suspect Jeff can fix up without another spin.)  Aside from that:

Tested-by: Aaron Brown <aaron.f.brown at intel.com>