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.h | |
| parent | 83af00395190bc2db05a67a417a2ea0d5967b74d (diff) | |
| download | lwn-28bf26724fdb0e02267d19e280d6717ee810a10d.tar.gz lwn-28bf26724fdb0e02267d19e280d6717ee810a10d.zip | |
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.h')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h index 38739ee8cd94..5792ee616b5c 100644 --- a/drivers/net/ethernet/intel/ice/ice.h +++ b/drivers/net/ethernet/intel/ice/ice.h @@ -34,6 +34,7 @@ #include <linux/ctype.h> #include <linux/bpf.h> #include <linux/avf/virtchnl.h> +#include <linux/cpu_rmap.h> #include <net/devlink.h> #include <net/ipv6.h> #include <net/xdp_sock.h> @@ -52,6 +53,7 @@ #include "ice_sriov.h" #include "ice_fdir.h" #include "ice_xsk.h" +#include "ice_arfs.h" extern const char ice_drv_ver[]; #define ICE_BAR0 0 @@ -271,6 +273,14 @@ struct ice_vsi { u8 *rss_lut_user; /* User configured lookup table entries */ u8 rss_lut_type; /* used to configure Get/Set RSS LUT AQ call */ + /* aRFS members only allocated for the PF VSI */ +#define ICE_MAX_ARFS_LIST 1024 +#define ICE_ARFS_LST_MASK (ICE_MAX_ARFS_LIST - 1) + struct hlist_head *arfs_fltr_list; + struct ice_arfs_active_fltr_cntrs *arfs_fltr_cntrs; + spinlock_t arfs_lock; /* protects aRFS hash table and filter state */ + atomic_t *arfs_last_fltr_id; + u16 max_frame; u16 rx_buf_len; @@ -558,6 +568,9 @@ int ice_schedule_reset(struct ice_pf *pf, enum ice_reset_req reset); void ice_print_link_msg(struct ice_vsi *vsi, bool isup); const char *ice_stat_str(enum ice_status stat_err); const char *ice_aq_str(enum ice_aq_err aq_err); +int +ice_fdir_write_fltr(struct ice_pf *pf, struct ice_fdir_fltr *input, bool add, + bool is_tun); void ice_vsi_manage_fdir(struct ice_vsi *vsi, bool ena); int ice_add_fdir_ethtool(struct ice_vsi *vsi, struct ethtool_rxnfc *cmd); int ice_del_fdir_ethtool(struct ice_vsi *vsi, struct ethtool_rxnfc *cmd); @@ -571,5 +584,6 @@ void ice_fdir_replay_fltrs(struct ice_pf *pf); int ice_fdir_create_dflt_rules(struct ice_pf *pf); int ice_open(struct net_device *netdev); int ice_stop(struct net_device *netdev); +void ice_service_task_schedule(struct ice_pf *pf); #endif /* _ICE_H_ */ |