diff options
| author | Marcin Szycik <marcin.szycik@linux.intel.com> | 2022-01-27 16:04:26 +0100 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2022-03-09 08:02:58 -0800 |
| commit | c8ff29b5874204d26eed90984db6789ccde62e3c (patch) | |
| tree | 2eabfa6273795602fe41f17561d1844b21f422bc /drivers/net/ethernet/intel/ice/ice_repr.c | |
| parent | 34a897758efed21e8b06c1ee3c550b528e93a375 (diff) | |
| download | lwn-c8ff29b5874204d26eed90984db6789ccde62e3c.tar.gz lwn-c8ff29b5874204d26eed90984db6789ccde62e3c.zip | |
ice: Add slow path offload stats on port representor in switchdev
Implement callbacks to check for stats and fetch port representor stats.
Stats are taken from RX/TX ring corresponding to port representor and show
the number of bytes/packets that were not offloaded.
To see slow path stats run:
ifstat -x cpu_hits -a
Signed-off-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_repr.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_repr.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_repr.c b/drivers/net/ethernet/intel/ice/ice_repr.c index 2adfaf21e056..f8db3ca521da 100644 --- a/drivers/net/ethernet/intel/ice/ice_repr.c +++ b/drivers/net/ethernet/intel/ice/ice_repr.c @@ -142,6 +142,59 @@ ice_repr_get_devlink_port(struct net_device *netdev) return &repr->vf->devlink_port; } +/** + * ice_repr_sp_stats64 - get slow path stats for port representor + * @dev: network interface device structure + * @stats: netlink stats structure + * + * RX/TX stats are being swapped here to be consistent with VF stats. In slow + * path, port representor receives data when the corresponding VF is sending it + * (and vice versa), TX and RX bytes/packets are effectively swapped on port + * representor. + */ +static int +ice_repr_sp_stats64(const struct net_device *dev, + struct rtnl_link_stats64 *stats) +{ + struct ice_netdev_priv *np = netdev_priv(dev); + int vf_id = np->repr->vf->vf_id; + struct ice_tx_ring *tx_ring; + struct ice_rx_ring *rx_ring; + u64 pkts, bytes; + + tx_ring = np->vsi->tx_rings[vf_id]; + ice_fetch_u64_stats_per_ring(&tx_ring->syncp, tx_ring->stats, + &pkts, &bytes); + stats->rx_packets = pkts; + stats->rx_bytes = bytes; + + rx_ring = np->vsi->rx_rings[vf_id]; + ice_fetch_u64_stats_per_ring(&rx_ring->syncp, rx_ring->stats, + &pkts, &bytes); + stats->tx_packets = pkts; + stats->tx_bytes = bytes; + stats->tx_dropped = rx_ring->rx_stats.alloc_page_failed + + rx_ring->rx_stats.alloc_buf_failed; + + return 0; +} + +static bool +ice_repr_ndo_has_offload_stats(const struct net_device *dev, int attr_id) +{ + return attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT; +} + +static int +ice_repr_ndo_get_offload_stats(int attr_id, const struct net_device *dev, + void *sp) +{ + if (attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT) + return ice_repr_sp_stats64(dev, (struct rtnl_link_stats64 *)sp); + + return -EINVAL; +} + static int ice_repr_setup_tc_cls_flower(struct ice_repr *repr, struct flow_cls_offload *flower) @@ -199,6 +252,8 @@ static const struct net_device_ops ice_repr_netdev_ops = { .ndo_start_xmit = ice_eswitch_port_start_xmit, .ndo_get_devlink_port = ice_repr_get_devlink_port, .ndo_setup_tc = ice_repr_setup_tc, + .ndo_has_offload_stats = ice_repr_ndo_has_offload_stats, + .ndo_get_offload_stats = ice_repr_ndo_get_offload_stats, }; /** |