diff options
| author | Brett Creeley <brett.creeley@intel.com> | 2020-05-11 18:01:46 -0700 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2020-05-22 22:02:34 -0700 |
| commit | 28bf26724fdb0e02267d19e280d6717ee810a10d (patch) | |
| tree | 01f86d0cd766635172c7afe408408928f8202c14 /drivers/net/ethernet/intel/ice/ice_ethtool_fdir.c | |
| parent | 83af00395190bc2db05a67a417a2ea0d5967b74d (diff) | |
ice: Implement aRFS
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>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_ethtool_fdir.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_ethtool_fdir.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool_fdir.c b/drivers/net/ethernet/intel/ice/ice_ethtool_fdir.c index a0002032be61..42803fc0ed18 100644 --- a/drivers/net/ethernet/intel/ice/ice_ethtool_fdir.c +++ b/drivers/net/ethernet/intel/ice/ice_ethtool_fdir.c @@ -566,6 +566,12 @@ ice_fdir_set_hw_fltr_rule(struct ice_pf *pf, struct ice_flow_seg_info *seg, return -EINVAL; } + if (ice_is_arfs_using_perfect_flow(hw, flow)) { + dev_err(dev, "aRFS using perfect flow type %d, cannot change input set\n", + flow); + return -EINVAL; + } + /* remove HW filter definition */ ice_fdir_rem_flow(hw, ICE_BLK_FD, flow); } @@ -1176,7 +1182,7 @@ err_exit: * * returns 0 on success and negative value on error */ -static int +int ice_fdir_write_fltr(struct ice_pf *pf, struct ice_fdir_fltr *input, bool add, bool is_tun) { |