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net/mlx5: E-Switch, Support getting chain mapping

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Currently, we write chain register mapping on miss from the the last
prio of a chain. It is used to restore the chain in software.

To support re-using the chain register mapping from global tables (such
as CT tuple table) misses, export the chain mapping.

Signed-off-by: Paul Blakey <paulb@mellanox.com>
Reviewed-by: Oz Shlomo <ozsh@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paul Blakey 2020-03-12 12:23:12 +02:00 committed by David S. Miller
parent 6fb0701a9c
commit 43435e9139
2 changed files with 20 additions and 0 deletions
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13
drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_chains.c
View File

@ -900,6 +900,19 @@ mlx5_esw_chains_destroy(struct mlx5_eswitch *esw)
mlx5_esw_chains_cleanup(esw);
}
int
mlx5_esw_chains_get_chain_mapping(struct mlx5_eswitch *esw, u32 chain,
u32 *chain_mapping)
{
return mapping_add(esw_chains_mapping(esw), &chain, chain_mapping);
}
int
mlx5_esw_chains_put_chain_mapping(struct mlx5_eswitch *esw, u32 chain_mapping)
{
return mapping_remove(esw_chains_mapping(esw), chain_mapping);
}
int mlx5_eswitch_get_chain_for_tag(struct mlx5_eswitch *esw, u32 tag,
u32 *chain)
{

7
drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_chains.h
View File

@ -31,6 +31,13 @@ void
mlx5_esw_chains_destroy_global_table(struct mlx5_eswitch *esw,
struct mlx5_flow_table *ft);
int
mlx5_esw_chains_get_chain_mapping(struct mlx5_eswitch *esw, u32 chain,
u32 *chain_mapping);
int
mlx5_esw_chains_put_chain_mapping(struct mlx5_eswitch *esw,
u32 chain_mapping);
int mlx5_esw_chains_create(struct mlx5_eswitch *esw);
void mlx5_esw_chains_destroy(struct mlx5_eswitch *esw);