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Enable accelerated Receive Flow Steering (aRFS). It is used to steer Rx
flows to a specific queue. This functionality is triggered by the network
stack through ndo_rx_flow_steer and requires Flow Director (ntuple on) to
function.
The fltr_info is used to add/remove/update flow rules in the HW, the
fltr_state is used to determine what to do with the filter with respect
to HW and/or SW, and the flow_id is used in co-ordination with the
network stack.
The work for aRFS is split into two paths: the ndo_rx_flow_steer
operation and the ice_service_task. The former is where the kernel hands
us an Rx SKB among other items to setup aRFS and the latter is where
the driver adds/updates/removes filter rules from HW and updates filter
state.
In the Rx path the following things can happen:
1. New aRFS entries are added to the hash table and the state is
set to ICE_ARFS_INACTIVE so the filter can be updated in HW
by the ice_service_task path.
2. aRFS entries have their Rx Queue updated if we receive a
pre-existing flow_id and the filter state is ICE_ARFS_ACTIVE.
The state is set to ICE_ARFS_INACTIVE so the filter can be
updated in HW by the ice_service_task path.
3. aRFS entries marked as ICE_ARFS_TODEL are deleted
In the ice_service_task path the following things can happen:
1. New aRFS entries marked as ICE_ARFS_INACTIVE are added or
updated in HW.
and their state is updated to ICE_ARFS_ACTIVE.
2. aRFS entries are deleted from HW and their state is updated
to ICE_ARFS_TODEL.
Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Madhu Chittim <madhu.chittim@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
31 lines
663 B
Makefile
31 lines
663 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2018, Intel Corporation.
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#
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# Makefile for the Intel(R) Ethernet Connection E800 Series Linux Driver
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#
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obj-$(CONFIG_ICE) += ice.o
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ice-y := ice_main.o \
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ice_controlq.o \
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ice_common.o \
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ice_nvm.o \
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ice_switch.o \
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ice_sched.o \
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ice_base.o \
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ice_lib.o \
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ice_txrx_lib.o \
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ice_txrx.o \
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ice_fltr.o \
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ice_fdir.o \
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ice_ethtool_fdir.o \
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ice_flex_pipe.o \
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ice_flow.o \
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ice_devlink.o \
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ice_ethtool.o
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ice-$(CONFIG_PCI_IOV) += ice_virtchnl_pf.o ice_sriov.o
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ice-$(CONFIG_DCB) += ice_dcb.o ice_dcb_nl.o ice_dcb_lib.o
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ice-$(CONFIG_RFS_ACCEL) += ice_arfs.o
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ice-$(CONFIG_XDP_SOCKETS) += ice_xsk.o
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