net/mlx5e: Add tc chains offload support for nic flows

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Allow adding nic tc flow rules with goto chain action.

Connecting the nic flows to the mlx5 chains infrastructure in previous
patches allows us to support the creation of chained flow tables and
rules that direct to another chain for further packet processing.
This is a required preparation to support CT offloads for nic tc flows.

We allow the creation of 256 different chains for nic flows since we
have 8 bits available for the chain restore tag in case of a miss.

Signed-off-by: Ariel Levkovich <lariel@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

...

This commit is contained in:

Ariel Levkovich 2020-04-29 01:27:15 +03:00 • committed by Saeed Mahameed

parent c620b77215

commit c756909722

4 changed files with 250 additions and 57 deletions

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10

drivers/net/ethernet/mellanox/mlx5/core/en_rx.c

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252

drivers/net/ethernet/mellanox/mlx5/core/en_tc.c

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34

drivers/net/ethernet/mellanox/mlx5/core/en_tc.h

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11

drivers/net/ethernet/mellanox/mlx5/core/lib/fs_chains.c

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