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Message-Id: <E1Zimcg-0008HA-0y@rmk-PC.arm.linux.org.uk>
Date: Sun, 04 Oct 2015 17:58:54 +0100
From: Russell King <rmk+kernel@....linux.org.uk>
To: Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
Andrew Lunn <andrew@...n.ch>
Cc: netdev@...r.kernel.org
Subject: [RFC PATCH] net: mvneta: add ethtool statistics
Add support for the ethtool statistic interface, returning the full set
of statistics which both the Armada 370 and Armada XP can support.
Signed-off-by: Russell King <rmk+kernel@....linux.org.uk>
---
Is there any standard terminology for the ethtool statistics? Are the
names given here satisfactory?
This patch is against net-next.git.
drivers/net/ethernet/marvell/mvneta.c | 100 ++++++++++++++++++++++++++++++++++
1 file changed, 100 insertions(+)
diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index 514df76fc70f..2019fa6b52e0 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -278,6 +278,51 @@ struct mvneta_pcpu_stats {
#define MVNETA_RX_BUF_SIZE(pkt_size) ((pkt_size) + NET_SKB_PAD)
+struct mvneta_statistic {
+ unsigned short offset;
+ unsigned short type;
+ const char name[ETH_GSTRING_LEN];
+};
+
+#define T_REG_32 32
+#define T_REG_64 64
+#define T_SW 1
+
+static const struct mvneta_statistic mvneta_statistics[] = {
+ { 0x3000, T_REG_64, "rx_good_bytes", },
+ { 0x3010, T_REG_32, "rx_good_packets", },
+ { 0x3008, T_REG_32, "rx_bad_bytes", },
+ { 0x3014, T_REG_32, "rx_bad_packets", },
+ { 0x3018, T_REG_32, "rx_broadcast_packets", },
+ { 0x301c, T_REG_32, "rx_multicast_packets", },
+ { 0x3050, T_REG_32, "rx_unrecog_mac_ctl", },
+ { 0x3054, T_REG_32, "rx_good_fc_packets", },
+ { 0x3058, T_REG_32, "rx_bad_fc_packets", },
+ { 0x305c, T_REG_32, "rx_undersize_packets", },
+ { 0x3064, T_REG_32, "rx_fragments", },
+ { 0x3068, T_REG_32, "rx_oversize_packets", },
+ { 0x306c, T_REG_32, "rx_jabber_packets", },
+ { 0x3070, T_REG_32, "rx_mac_errors", },
+ { 0x3074, T_REG_32, "rx_bad_crc", },
+ { 0x3078, T_REG_32, "rx_collision_events", },
+ { 0x307c, T_REG_32, "rx_late_collision_events", },
+ { 0x2484, T_REG_32, "rx_discard_packets", },
+ { 0x2488, T_REG_32, "rx_overrun_packets", },
+ { 0x3020, T_REG_32, "packets_64bytes", },
+ { 0x3024, T_REG_32, "packets_65to127bytes", },
+ { 0x3028, T_REG_32, "packets_128to255bytes", },
+ { 0x302c, T_REG_32, "packets_256to511bytes", },
+ { 0x3030, T_REG_32, "packets_512to1023bytes", },
+ { 0x3034, T_REG_32, "packets_1024tomaxbytes", },
+ { 0x3038, T_REG_64, "tx_good_bytes", },
+ { 0x3040, T_REG_32, "tx_good_packets", },
+ { 0x3044, T_REG_32, "tx_excessive_collision", },
+ { 0x3048, T_REG_32, "tx_multicast_packets", },
+ { 0x304c, T_REG_32, "tx_broadcast_packets", },
+ { 0x3060, T_REG_32, "tx_fc", },
+ { 0x300c, T_REG_32, "tx_mac_error", },
+};
+
struct mvneta_pcpu_stats {
struct u64_stats_sync syncp;
u64 rx_packets;
@@ -324,6 +369,8 @@ struct mvneta_port {
unsigned int speed;
unsigned int tx_csum_limit;
int use_inband_status:1;
+
+ u64 ethtool_stats[ARRAY_SIZE(mvneta_statistics)];
};
/* The mvneta_tx_desc and mvneta_rx_desc structures describe the
@@ -2982,6 +3029,56 @@ static int mvneta_ethtool_set_ringparam(struct net_device *dev,
return 0;
}
+static void mvneta_ethtool_get_strings(struct net_device *netdev, u32 sset,
+ u8 *data)
+{
+ if (sset == ETH_SS_STATS) {
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mvneta_statistics); i++)
+ memcpy(data + i * ETH_GSTRING_LEN,
+ mvneta_statistics[i].name, ETH_GSTRING_LEN);
+ }
+}
+
+static void mvneta_ethtool_get_stats(struct net_device *dev,
+ struct ethtool_stats *stats, u64 *data)
+{
+ struct mvneta_port *pp = netdev_priv(dev);
+ const struct mvneta_statistic *s;
+ void __iomem *base = pp->base;
+ u32 high, low, val;
+ int i;
+
+ for (i = 0, s = mvneta_statistics;
+ s < mvneta_statistics + ARRAY_SIZE(mvneta_statistics);
+ s++, i++) {
+ val = 0;
+
+ switch (s->type) {
+ case T_REG_32:
+ val = readl_relaxed(base + s->offset);
+ break;
+ case T_REG_64:
+ /* Docs say to read low 32-bit then high */
+ low = readl_relaxed(base + s->offset);
+ high = readl_relaxed(base + s->offset + 4);
+ val = (u64)high << 32 | low;
+ break;
+ }
+
+ pp->ethtool_stats[i] += val;
+ *data++ = pp->ethtool_stats[i];
+ }
+}
+
+static int mvneta_ethtool_get_sset_count(struct net_device *dev, int sset)
+{
+ if (sset == ETH_SS_STATS)
+ return ARRAY_SIZE(mvneta_statistics);
+ return -EOPNOTSUPP;
+}
+
static const struct net_device_ops mvneta_netdev_ops = {
.ndo_open = mvneta_open,
.ndo_stop = mvneta_stop,
@@ -3003,6 +3100,9 @@ const struct ethtool_ops mvneta_eth_tool_ops = {
.get_drvinfo = mvneta_ethtool_get_drvinfo,
.get_ringparam = mvneta_ethtool_get_ringparam,
.set_ringparam = mvneta_ethtool_set_ringparam,
+ .get_strings = mvneta_ethtool_get_strings,
+ .get_ethtool_stats = mvneta_ethtool_get_stats,
+ .get_sset_count = mvneta_ethtool_get_sset_count,
};
/* Initialize hw */
--
2.1.0
--
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