alx: add stats to ethtool

Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/atheros/alx/ethtool.c b/drivers/net/ethernet/atheros/alx/ethtool.c
index 45b3650..08e22df 100644 (file)
--- a/drivers/net/ethernet/atheros/alx/ethtool.c
+++ b/drivers/net/ethernet/atheros/alx/ethtool.c
@@ -46,6 +46,66 @@
 #include "reg.h"
 #include "hw.h"
 
+/* The order of these strings must match the order of the fields in
+ * struct alx_hw_stats
+ * See hw.h
+ */
+static const char alx_gstrings_stats[][ETH_GSTRING_LEN] = {
+       "rx_packets",
+       "rx_bcast_packets",
+       "rx_mcast_packets",
+       "rx_pause_packets",
+       "rx_ctrl_packets",
+       "rx_fcs_errors",
+       "rx_length_errors",
+       "rx_bytes",
+       "rx_runt_packets",
+       "rx_fragments",
+       "rx_64B_or_less_packets",
+       "rx_65B_to_127B_packets",
+       "rx_128B_to_255B_packets",
+       "rx_256B_to_511B_packets",
+       "rx_512B_to_1023B_packets",
+       "rx_1024B_to_1518B_packets",
+       "rx_1519B_to_mtu_packets",
+       "rx_oversize_packets",
+       "rx_rxf_ov_drop_packets",
+       "rx_rrd_ov_drop_packets",
+       "rx_align_errors",
+       "rx_bcast_bytes",
+       "rx_mcast_bytes",
+       "rx_address_errors",
+       "tx_packets",
+       "tx_bcast_packets",
+       "tx_mcast_packets",
+       "tx_pause_packets",
+       "tx_exc_defer_packets",
+       "tx_ctrl_packets",
+       "tx_defer_packets",
+       "tx_bytes",
+       "tx_64B_or_less_packets",
+       "tx_65B_to_127B_packets",
+       "tx_128B_to_255B_packets",
+       "tx_256B_to_511B_packets",
+       "tx_512B_to_1023B_packets",
+       "tx_1024B_to_1518B_packets",
+       "tx_1519B_to_mtu_packets",
+       "tx_single_collision",
+       "tx_multiple_collisions",
+       "tx_late_collision",
+       "tx_abort_collision",
+       "tx_underrun",
+       "tx_trd_eop",
+       "tx_length_errors",
+       "tx_trunc_packets",
+       "tx_bcast_bytes",
+       "tx_mcast_bytes",
+       "tx_update",
+};
+
+#define ALX_NUM_STATS ARRAY_SIZE(alx_gstrings_stats)
+
+
 static u32 alx_get_supported_speeds(struct alx_hw *hw)
 {
        u32 supported = SUPPORTED_10baseT_Half |
@@ -201,6 +261,44 @@ static void alx_set_msglevel(struct net_device *netdev, u32 data)
        alx->msg_enable = data;
 }
 
+static void alx_get_ethtool_stats(struct net_device *netdev,
+                                 struct ethtool_stats *estats, u64 *data)
+{
+       struct alx_priv *alx = netdev_priv(netdev);
+       struct alx_hw *hw = &alx->hw;
+
+       spin_lock(&alx->stats_lock);
+
+       alx_update_hw_stats(hw);
+       BUILD_BUG_ON(sizeof(hw->stats) - offsetof(struct alx_hw_stats, rx_ok) <
+                    ALX_NUM_STATS * sizeof(u64));
+       memcpy(data, &hw->stats.rx_ok, ALX_NUM_STATS * sizeof(u64));
+
+       spin_unlock(&alx->stats_lock);
+}
+
+static void alx_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
+{
+       switch (stringset) {
+       case ETH_SS_STATS:
+               memcpy(buf, &alx_gstrings_stats, sizeof(alx_gstrings_stats));
+               break;
+       default:
+               WARN_ON(1);
+               break;
+       }
+}
+
+static int alx_get_sset_count(struct net_device *netdev, int sset)
+{
+       switch (sset) {
+       case ETH_SS_STATS:
+               return ALX_NUM_STATS;
+       default:
+               return -EINVAL;
+       }
+}
+
 const struct ethtool_ops alx_ethtool_ops = {
        .get_settings   = alx_get_settings,
        .set_settings   = alx_set_settings,
@@ -209,4 +307,7 @@ const struct ethtool_ops alx_ethtool_ops = {
        .get_msglevel   = alx_get_msglevel,
        .set_msglevel   = alx_set_msglevel,
        .get_link       = ethtool_op_get_link,
+       .get_strings    = alx_get_strings,
+       .get_sset_count = alx_get_sset_count,
+       .get_ethtool_stats      = alx_get_ethtool_stats,
 };

diff --git a/drivers/net/ethernet/atheros/alx/hw.h b/drivers/net/ethernet/atheros/alx/hw.h
index 854d807..1554880 100644 (file)
--- a/drivers/net/ethernet/atheros/alx/hw.h
+++ b/drivers/net/ethernet/atheros/alx/hw.h
@@ -381,7 +381,12 @@ struct alx_rrd {
                                 ALX_ISR_RX_Q6 | \
                                 ALX_ISR_RX_Q7)
 
-/* Statistics counters collected by the MAC */
+/* Statistics counters collected by the MAC
+ *
+ * The order of the fields must match the strings in alx_gstrings_stats
+ * All stats fields should be u64
+ * See ethtool.c
+ */
 struct alx_hw_stats {
        /* rx */
        u64 rx_ok;              /* good RX packets */