Merge branch 'cxgb4-tc-flower'

Rahul Lakkireddy says:

====================
cxgb4: add support to offload tc flower

This series of patches add support to offload tc flower onto Chelsio
NICs.

Patch 1 adds basic skeleton to prepare for offloading tc flower flows.

Patch 2 adds support to add/remove flows for offload.  Flows can have
accompanying masks.  Following match and action are currently supported
for offload:
Match:  ether-protocol, IPv4/IPv6 addresses, L4 ports (TCP/UDP)
Action: drop, redirect to another port on the device.

Patch 3 adds support to offload tc-flower flows having
vlan actions: pop, push, and modify.

Patch 4 adds support to fetch stats for the offloaded tc flower flows
from hardware.

Support for offloading more match and action types are to be followed
in subsequent series.

v2:
- Setting ftid to -1 not required after bitmap_find_free_region
  in cxgb4_get_free_ftid.
- Direct return can be used as jumping to error path is not needed
  if flower entry allocation failed in cxgb4_tc_flower_replace.
  Same applies if flower entry not found in cxgb4_tc_flower_destroy.
- Also, removed an extra return from cxgb4_tc_flower_destroy.
- Avoid wrapping line for netdev_err message. Also, use
  consistent error message string.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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