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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-19 07:19:24 +07:00
mlxsw: spectrum: Implement offload stats ndo and expose HW stats by default
Change the default statistics ndo to return HW statistics (like the one returned by ethtool_ops). The HW stats are collected to a cache by delayed work every 1 sec. Implement the offload stat ndo. Add a function to get SW statistics, to be called from this function. Signed-off-by: Nogah Frankel <nogahf@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nogah Frankel
David S. Miller
parent
69ae6ad2ff
commit
fc1bbb0f18
@ -819,9 +819,9 @@ static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
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return err;
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}
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static struct rtnl_link_stats64 *
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mlxsw_sp_port_get_stats64(struct net_device *dev,
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struct rtnl_link_stats64 *stats)
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int
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mlxsw_sp_port_get_sw_stats64(const struct net_device *dev,
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struct rtnl_link_stats64 *stats)
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{
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struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
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struct mlxsw_sp_port_pcpu_stats *p;
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@ -848,6 +848,107 @@ mlxsw_sp_port_get_stats64(struct net_device *dev,
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tx_dropped += p->tx_dropped;
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}
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stats->tx_dropped = tx_dropped;
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return 0;
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}
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bool mlxsw_sp_port_has_offload_stats(int attr_id)
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{
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switch (attr_id) {
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case IFLA_OFFLOAD_XSTATS_CPU_HIT:
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return true;
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}
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return false;
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}
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int mlxsw_sp_port_get_offload_stats(int attr_id, const struct net_device *dev,
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void *sp)
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{
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switch (attr_id) {
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case IFLA_OFFLOAD_XSTATS_CPU_HIT:
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return mlxsw_sp_port_get_sw_stats64(dev, sp);
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}
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return -EINVAL;
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}
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static int mlxsw_sp_port_get_stats_raw(struct net_device *dev, int grp,
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int prio, char *ppcnt_pl)
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{
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struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
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struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
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mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port, grp, prio);
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return mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
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}
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static int mlxsw_sp_port_get_hw_stats(struct net_device *dev,
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struct rtnl_link_stats64 *stats)
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{
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char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
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int err;
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err = mlxsw_sp_port_get_stats_raw(dev, MLXSW_REG_PPCNT_IEEE_8023_CNT,
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0, ppcnt_pl);
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if (err)
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goto out;
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stats->tx_packets =
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mlxsw_reg_ppcnt_a_frames_transmitted_ok_get(ppcnt_pl);
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stats->rx_packets =
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mlxsw_reg_ppcnt_a_frames_received_ok_get(ppcnt_pl);
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stats->tx_bytes =
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mlxsw_reg_ppcnt_a_octets_transmitted_ok_get(ppcnt_pl);
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stats->rx_bytes =
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mlxsw_reg_ppcnt_a_octets_received_ok_get(ppcnt_pl);
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stats->multicast =
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mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get(ppcnt_pl);
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stats->rx_crc_errors =
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mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get(ppcnt_pl);
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stats->rx_frame_errors =
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mlxsw_reg_ppcnt_a_alignment_errors_get(ppcnt_pl);
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stats->rx_length_errors = (
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mlxsw_reg_ppcnt_a_in_range_length_errors_get(ppcnt_pl) +
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mlxsw_reg_ppcnt_a_out_of_range_length_field_get(ppcnt_pl) +
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mlxsw_reg_ppcnt_a_frame_too_long_errors_get(ppcnt_pl));
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stats->rx_errors = (stats->rx_crc_errors +
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stats->rx_frame_errors + stats->rx_length_errors);
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out:
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return err;
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}
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static void update_stats_cache(struct work_struct *work)
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{
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struct mlxsw_sp_port *mlxsw_sp_port =
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container_of(work, struct mlxsw_sp_port,
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hw_stats.update_dw.work);
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if (!netif_carrier_ok(mlxsw_sp_port->dev))
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goto out;
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mlxsw_sp_port_get_hw_stats(mlxsw_sp_port->dev,
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mlxsw_sp_port->hw_stats.cache);
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out:
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mlxsw_core_schedule_dw(&mlxsw_sp_port->hw_stats.update_dw,
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MLXSW_HW_STATS_UPDATE_TIME);
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}
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/* Return the stats from a cache that is updated periodically,
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* as this function might get called in an atomic context.
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*/
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static struct rtnl_link_stats64 *
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mlxsw_sp_port_get_stats64(struct net_device *dev,
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struct rtnl_link_stats64 *stats)
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{
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struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
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memcpy(stats, mlxsw_sp_port->hw_stats.cache, sizeof(*stats));
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return stats;
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}
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@ -1209,6 +1310,8 @@ static const struct net_device_ops mlxsw_sp_port_netdev_ops = {
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.ndo_set_mac_address = mlxsw_sp_port_set_mac_address,
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.ndo_change_mtu = mlxsw_sp_port_change_mtu,
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.ndo_get_stats64 = mlxsw_sp_port_get_stats64,
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.ndo_has_offload_stats = mlxsw_sp_port_has_offload_stats,
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.ndo_get_offload_stats = mlxsw_sp_port_get_offload_stats,
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.ndo_vlan_rx_add_vid = mlxsw_sp_port_add_vid,
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.ndo_vlan_rx_kill_vid = mlxsw_sp_port_kill_vid,
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.ndo_neigh_construct = mlxsw_sp_router_neigh_construct,
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@ -1547,8 +1650,6 @@ static void __mlxsw_sp_port_get_stats(struct net_device *dev,
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enum mlxsw_reg_ppcnt_grp grp, int prio,
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u64 *data, int data_index)
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{
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struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
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struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
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struct mlxsw_sp_port_hw_stats *hw_stats;
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char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
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int i, len;
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@ -1557,8 +1658,7 @@ static void __mlxsw_sp_port_get_stats(struct net_device *dev,
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err = mlxsw_sp_get_hw_stats_by_group(&hw_stats, &len, grp);
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if (err)
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return;
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mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port, grp, prio);
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err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
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mlxsw_sp_port_get_stats_raw(dev, grp, prio, ppcnt_pl);
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for (i = 0; i < len; i++)
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data[data_index + i] = !err ? hw_stats[i].getter(ppcnt_pl) : 0;
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}
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@ -2145,6 +2245,16 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
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goto err_alloc_stats;
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}
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mlxsw_sp_port->hw_stats.cache =
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kzalloc(sizeof(*mlxsw_sp_port->hw_stats.cache), GFP_KERNEL);
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if (!mlxsw_sp_port->hw_stats.cache) {
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err = -ENOMEM;
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goto err_alloc_hw_stats;
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}
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INIT_DELAYED_WORK(&mlxsw_sp_port->hw_stats.update_dw,
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&update_stats_cache);
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dev->netdev_ops = &mlxsw_sp_port_netdev_ops;
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dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops;
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@ -2245,6 +2355,7 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
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goto err_core_port_init;
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}
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mlxsw_core_schedule_dw(&mlxsw_sp_port->hw_stats.update_dw, 0);
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return 0;
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err_core_port_init:
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@ -2265,6 +2376,8 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
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err_dev_addr_init:
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mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
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err_port_swid_set:
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kfree(mlxsw_sp_port->hw_stats.cache);
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err_alloc_hw_stats:
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free_percpu(mlxsw_sp_port->pcpu_stats);
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err_alloc_stats:
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kfree(mlxsw_sp_port->untagged_vlans);
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@ -2281,6 +2394,7 @@ static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
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if (!mlxsw_sp_port)
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return;
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cancel_delayed_work_sync(&mlxsw_sp_port->hw_stats.update_dw);
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mlxsw_core_port_fini(&mlxsw_sp_port->core_port);
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unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
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mlxsw_sp->ports[local_port] = NULL;
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@ -2290,6 +2404,7 @@ static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
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mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
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mlxsw_sp_port_module_unmap(mlxsw_sp, mlxsw_sp_port->local_port);
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free_percpu(mlxsw_sp_port->pcpu_stats);
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kfree(mlxsw_sp_port->hw_stats.cache);
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kfree(mlxsw_sp_port->untagged_vlans);
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kfree(mlxsw_sp_port->active_vlans);
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WARN_ON_ONCE(!list_empty(&mlxsw_sp_port->vports_list));
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@ -361,6 +361,11 @@ struct mlxsw_sp_port {
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struct list_head vports_list;
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/* TC handles */
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struct list_head mall_tc_list;
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struct {
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#define MLXSW_HW_STATS_UPDATE_TIME HZ
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struct rtnl_link_stats64 *cache;
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struct delayed_work update_dw;
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} hw_stats;
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};
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struct mlxsw_sp_port *mlxsw_sp_port_lower_dev_hold(struct net_device *dev);
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