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nfp: add ethtool statistics for representors
Representors may be associated with both VFs or more importantly with physical ports. Allow vNIC and MAC statistics to be read with ethtool -S on representors. In case of vNICs we reuse the vNIC statistic helper, we just need to swap RX and TX to give statistics the "switch perspective." Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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ef0ec676a7
commit
899a37ade8
2 changed files with 71 additions and 4 deletions
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@ -180,6 +180,7 @@ static const struct nfp_et_stat nfp_mac_et_stats[] = {
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};
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#define NN_ET_GLOBAL_STATS_LEN ARRAY_SIZE(nfp_net_et_stats)
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#define NN_ET_SWITCH_STATS_LEN 9
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#define NN_ET_RVEC_GATHER_STATS 7
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static void nfp_net_get_nspinfo(struct nfp_app *app, char *version)
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@ -497,11 +498,24 @@ nfp_vnic_get_hw_stats_count(unsigned int rx_rings, unsigned int tx_rings)
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static u8 *
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nfp_vnic_get_hw_stats_strings(u8 *data, unsigned int rx_rings,
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unsigned int tx_rings)
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unsigned int tx_rings, bool repr)
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{
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int i;
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int swap_off, i;
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for (i = 0; i < NN_ET_GLOBAL_STATS_LEN; i++)
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BUILD_BUG_ON(NN_ET_GLOBAL_STATS_LEN < NN_ET_SWITCH_STATS_LEN * 2);
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/* If repr is true first add SWITCH_STATS_LEN and then subtract it
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* effectively swapping the RX and TX statistics (giving us the RX
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* and TX from perspective of the switch).
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*/
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swap_off = repr * NN_ET_SWITCH_STATS_LEN;
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for (i = 0; i < NN_ET_SWITCH_STATS_LEN; i++)
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data = nfp_pr_et(data, nfp_net_et_stats[i + swap_off].name);
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for (i = NN_ET_SWITCH_STATS_LEN; i < NN_ET_SWITCH_STATS_LEN * 2; i++)
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data = nfp_pr_et(data, nfp_net_et_stats[i - swap_off].name);
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for (i = NN_ET_SWITCH_STATS_LEN * 2; i < NN_ET_GLOBAL_STATS_LEN; i++)
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data = nfp_pr_et(data, nfp_net_et_stats[i].name);
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for (i = 0; i < tx_rings; i++) {
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@ -589,7 +603,8 @@ static void nfp_net_get_strings(struct net_device *netdev,
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case ETH_SS_STATS:
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data = nfp_vnic_get_sw_stats_strings(netdev, data);
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data = nfp_vnic_get_hw_stats_strings(data, nn->dp.num_rx_rings,
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nn->dp.num_tx_rings);
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nn->dp.num_tx_rings,
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false);
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data = nfp_mac_get_stats_strings(netdev, data);
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break;
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}
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@ -622,6 +637,50 @@ static int nfp_net_get_sset_count(struct net_device *netdev, int sset)
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}
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}
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static void nfp_port_get_strings(struct net_device *netdev,
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u32 stringset, u8 *data)
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{
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struct nfp_port *port = nfp_port_from_netdev(netdev);
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switch (stringset) {
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case ETH_SS_STATS:
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if (nfp_port_is_vnic(port))
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data = nfp_vnic_get_hw_stats_strings(data, 0, 0, true);
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else
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data = nfp_mac_get_stats_strings(netdev, data);
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break;
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}
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}
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static void
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nfp_port_get_stats(struct net_device *netdev, struct ethtool_stats *stats,
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u64 *data)
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{
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struct nfp_port *port = nfp_port_from_netdev(netdev);
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if (nfp_port_is_vnic(port))
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data = nfp_vnic_get_hw_stats(data, port->vnic, 0, 0);
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else
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data = nfp_mac_get_stats(netdev, data);
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}
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static int nfp_port_get_sset_count(struct net_device *netdev, int sset)
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{
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struct nfp_port *port = nfp_port_from_netdev(netdev);
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unsigned int count;
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switch (sset) {
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case ETH_SS_STATS:
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if (nfp_port_is_vnic(port))
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count = nfp_vnic_get_hw_stats_count(0, 0);
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else
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count = nfp_mac_get_stats_count(netdev);
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return count;
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default:
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return -EOPNOTSUPP;
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}
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}
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/* RX network flow classification (RSS, filters, etc)
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*/
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static u32 ethtool_flow_to_nfp_flag(u32 flow_type)
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@ -1085,6 +1144,9 @@ static const struct ethtool_ops nfp_net_ethtool_ops = {
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const struct ethtool_ops nfp_port_ethtool_ops = {
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.get_drvinfo = nfp_app_get_drvinfo,
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.get_link = ethtool_op_get_link,
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.get_strings = nfp_port_get_strings,
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.get_ethtool_stats = nfp_port_get_stats,
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.get_sset_count = nfp_port_get_sset_count,
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.set_dump = nfp_app_set_dump,
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.get_dump_flag = nfp_app_get_dump_flag,
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.get_dump_data = nfp_app_get_dump_data,
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@ -116,6 +116,11 @@ extern const struct switchdev_ops nfp_port_switchdev_ops;
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int nfp_port_setup_tc(struct net_device *netdev, enum tc_setup_type type,
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void *type_data);
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static inline bool nfp_port_is_vnic(const struct nfp_port *port)
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{
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return port->type == NFP_PORT_PF_PORT || port->type == NFP_PORT_VF_PORT;
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}
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struct nfp_port *nfp_port_from_netdev(struct net_device *netdev);
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struct nfp_port *
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nfp_port_from_id(struct nfp_pf *pf, enum nfp_port_type type, unsigned int id);
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