This series includes mlx5 updates
1) Add support for Connection Tracking offload in NIC mode.
Supporting CT offload in NIC mode on Mellanox cards is useful for
scenarios where the dual port NIC serves as a gateway between 2
networks and forwards traffic between these networks.
Since the traffic is not terminated on the host in this case,
no use of SRIOV VFs and/or switchdev mode is required.
Today Mellanox NIC cards already support offloading of packet forwarding
between physical ports without going to the host so combining it with CT
offloading allows users to create a gateway with forwarding and CT
(Including NAT) offloading capabilities in non-switchdev mode.
To support connection tracking in non-Switchdev mode (Single NIC mode),
we need to make use of the current Connection tracking infrastructure
implemented on top of E-Switch and the mlx5 generic flow table chains
APIs, to make it work on non-Eswitch steering domain e.g. NIC RX domain,
the following was performed:
1.1) Refactor current flow steering chains infrastructure and
updates TC nic mode implementation to use flow table chains.
1.2) Refactor current Connection Tracking (CT) infrastructure to not
assume E-switch backend, and make the CT layer agnostic to
underlying steering mode (E-Switch/NIC)
1.3) Plumbing to support CT offload in NIC mode.
2) Trivial code cleanups.
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Merge tag 'mlx5-updates-2020-09-22' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
mlx5-updates-2020-09-22
This series includes mlx5 updates
1) Add support for Connection Tracking offload in NIC mode.
Supporting CT offload in NIC mode on Mellanox cards is useful for
scenarios where the dual port NIC serves as a gateway between 2
networks and forwards traffic between these networks.
Since the traffic is not terminated on the host in this case,
no use of SRIOV VFs and/or switchdev mode is required.
Today Mellanox NIC cards already support offloading of packet forwarding
between physical ports without going to the host so combining it with CT
offloading allows users to create a gateway with forwarding and CT
(Including NAT) offloading capabilities in non-switchdev mode.
To support connection tracking in non-Switchdev mode (Single NIC mode),
we need to make use of the current Connection tracking infrastructure
implemented on top of E-Switch and the mlx5 generic flow table chains
APIs, to make it work on non-Eswitch steering domain e.g. NIC RX domain,
the following was performed:
1.1) Refactor current flow steering chains infrastructure and
updates TC nic mode implementation to use flow table chains.
1.2) Refactor current Connection Tracking (CT) infrastructure to not
assume E-switch backend, and make the CT layer agnostic to
underlying steering mode (E-Switch/NIC)
1.3) Plumbing to support CT offload in NIC mode.
2) Trivial code cleanups.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
075c156850