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net/mlx5e: Introduce tc offload support

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Extend ndo_setup_tc() to support ingress tc offloading. Will be used by
later patches to offload tc flower filter.

Feature is off by default and could be enabled by issuing:
 # ethtool  -K eth0 hw-tc-offload on

Offloads flow table is dynamically created when first filter is
added.
Rules are saved in a hash table that is maintained by the consumer (for
example - the flower offload in the next patch).
When last filter is removed and no filters exist in the hash table, the
offload flow table is destroyed.

Signed-off-by: Amir Vadai <amir@vadai.me>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amir Vadai 2016-03-08 12:42:36 +02:00 • committed by David S. Miller
commit e8f887ac6a
5 changed files with 222 additions and 2 deletions
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