[PATCH net-next 7/8] octeon_ep_vf: add ethtool support
From: Veerasenareddy Burru
Date: Tue Nov 08 2022 - 15:44:48 EST
Add support for the following ethtool commands:
ethtool -i|--driver devname
ethtool devname
ethtool -S|--statistics devname
Signed-off-by: Veerasenareddy Burru <vburru@xxxxxxxxxxx>
Signed-off-by: Sathesh Edara <sedara@xxxxxxxxxxx>
Signed-off-by: Satananda Burla <sburla@xxxxxxxxxxx>
---
.../ethernet/marvell/octeon_ep_vf/Makefile | 2 +-
.../marvell/octeon_ep_vf/octep_vf_ethtool.c | 307 ++++++++++++++++++
.../marvell/octeon_ep_vf/octep_vf_main.c | 1 +
.../marvell/octeon_ep_vf/octep_vf_main.h | 1 +
.../marvell/octeon_ep_vf/octep_vf_mbox.c | 3 +-
5 files changed, 312 insertions(+), 2 deletions(-)
create mode 100644 drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_ethtool.c
diff --git a/drivers/net/ethernet/marvell/octeon_ep_vf/Makefile b/drivers/net/ethernet/marvell/octeon_ep_vf/Makefile
index d958640ba9c9..75a711a6c199 100644
--- a/drivers/net/ethernet/marvell/octeon_ep_vf/Makefile
+++ b/drivers/net/ethernet/marvell/octeon_ep_vf/Makefile
@@ -6,4 +6,4 @@
obj-$(CONFIG_OCTEON_EP_VF) += octeon_ep_vf.o
octeon_ep_vf-y := octep_vf_main.o octep_vf_cn9k.o octep_vf_tx.o octep_vf_rx.o \
- octep_vf_mbox.o
+ octep_vf_ethtool.o octep_vf_mbox.o
diff --git a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_ethtool.c b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_ethtool.c
new file mode 100644
index 000000000000..25e6f643cd9f
--- /dev/null
+++ b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_ethtool.c
@@ -0,0 +1,307 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell Octeon EP (EndPoint) VF Ethernet Driver
+ *
+ * Copyright (C) 2020 Marvell.
+ *
+ */
+
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/ethtool.h>
+
+#include "octep_vf_config.h"
+#include "octep_vf_main.h"
+
+static const char octep_vf_gstrings_global_stats[][ETH_GSTRING_LEN] = {
+ "rx_packets",
+ "tx_packets",
+ "rx_bytes",
+ "tx_bytes",
+ "rx_alloc_errors",
+ "tx_busy_errors",
+ "rx_dropped",
+ "tx_dropped",
+ "tx_hw_pkts",
+ "tx_hw_octs",
+ "tx_hw_bcast",
+ "tx_hw_mcast",
+ "rx_hw_pkts",
+ "rx_hw_bytes",
+ "rx_hw_bcast",
+ "rx_hw_mcast",
+ "rx_dropped_pkts_fifo_full",
+ "rx_dropped_bytes_fifo_full",
+ "rx_err_pkts",
+};
+
+#define OCTEP_VF_GLOBAL_STATS_CNT (sizeof(octep_vf_gstrings_global_stats) / ETH_GSTRING_LEN)
+
+static const char octep_vf_gstrings_tx_q_stats[][ETH_GSTRING_LEN] = {
+ "tx_packets_posted[Q-%u]",
+ "tx_packets_completed[Q-%u]",
+ "tx_bytes[Q-%u]",
+ "tx_busy[Q-%u]",
+};
+
+#define OCTEP_VF_TX_Q_STATS_CNT (sizeof(octep_vf_gstrings_tx_q_stats) / ETH_GSTRING_LEN)
+
+static const char octep_vf_gstrings_rx_q_stats[][ETH_GSTRING_LEN] = {
+ "rx_packets[Q-%u]",
+ "rx_bytes[Q-%u]",
+ "rx_alloc_errors[Q-%u]",
+};
+
+#define OCTEP_VF_RX_Q_STATS_CNT (sizeof(octep_vf_gstrings_rx_q_stats) / ETH_GSTRING_LEN)
+
+static void octep_vf_get_drvinfo(struct net_device *netdev,
+ struct ethtool_drvinfo *info)
+{
+ struct octep_vf_device *oct = netdev_priv(netdev);
+
+ strscpy(info->driver, OCTEP_VF_DRV_NAME, sizeof(info->driver));
+ strscpy(info->bus_info, pci_name(oct->pdev), sizeof(info->bus_info));
+}
+
+static void octep_vf_get_strings(struct net_device *netdev,
+ u32 stringset, u8 *data)
+{
+ struct octep_vf_device *oct = netdev_priv(netdev);
+ u16 num_queues = CFG_GET_PORTS_ACTIVE_IO_RINGS(oct->conf);
+ char *strings = (char *)data;
+ int i, j;
+
+ switch (stringset) {
+ case ETH_SS_STATS:
+ for (i = 0; i < OCTEP_VF_GLOBAL_STATS_CNT; i++) {
+ snprintf(strings, ETH_GSTRING_LEN,
+ octep_vf_gstrings_global_stats[i]);
+ strings += ETH_GSTRING_LEN;
+ }
+
+ for (i = 0; i < num_queues; i++) {
+ for (j = 0; j < OCTEP_VF_TX_Q_STATS_CNT; j++) {
+ snprintf(strings, ETH_GSTRING_LEN,
+ octep_vf_gstrings_tx_q_stats[j], i);
+ strings += ETH_GSTRING_LEN;
+ }
+ }
+
+ for (i = 0; i < num_queues; i++) {
+ for (j = 0; j < OCTEP_VF_RX_Q_STATS_CNT; j++) {
+ snprintf(strings, ETH_GSTRING_LEN,
+ octep_vf_gstrings_rx_q_stats[j], i);
+ strings += ETH_GSTRING_LEN;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+static int octep_vf_get_sset_count(struct net_device *netdev, int sset)
+{
+ struct octep_vf_device *oct = netdev_priv(netdev);
+ u16 num_queues = CFG_GET_PORTS_ACTIVE_IO_RINGS(oct->conf);
+
+ switch (sset) {
+ case ETH_SS_STATS:
+ return OCTEP_VF_GLOBAL_STATS_CNT + (num_queues *
+ (OCTEP_VF_TX_Q_STATS_CNT + OCTEP_VF_RX_Q_STATS_CNT));
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static void octep_vf_get_ethtool_stats(struct net_device *netdev,
+ struct ethtool_stats *stats, u64 *data)
+{
+ struct octep_vf_device *oct = netdev_priv(netdev);
+ struct octep_vf_iface_tx_stats *iface_tx_stats;
+ struct octep_vf_iface_rx_stats *iface_rx_stats;
+ u64 rx_alloc_errors, tx_busy_errors;
+ u64 rx_packets, rx_bytes;
+ u64 tx_packets, tx_bytes;
+ int q, i;
+
+ rx_packets = 0;
+ rx_bytes = 0;
+ tx_packets = 0;
+ tx_bytes = 0;
+ rx_alloc_errors = 0;
+ tx_busy_errors = 0;
+ tx_packets = 0;
+ tx_bytes = 0;
+ rx_packets = 0;
+ rx_bytes = 0;
+
+ octep_vf_get_if_stats(oct);
+ iface_tx_stats = &oct->iface_tx_stats;
+ iface_rx_stats = &oct->iface_rx_stats;
+
+ for (q = 0; q < oct->num_oqs; q++) {
+ struct octep_vf_iq *iq = oct->iq[q];
+ struct octep_vf_oq *oq = oct->oq[q];
+
+ tx_packets += iq->stats.instr_completed;
+ tx_bytes += iq->stats.bytes_sent;
+ tx_busy_errors += iq->stats.tx_busy;
+
+ rx_packets += oq->stats.packets;
+ rx_bytes += oq->stats.bytes;
+ rx_alloc_errors += oq->stats.alloc_failures;
+ }
+ i = 0;
+ data[i++] = rx_packets;
+ data[i++] = tx_packets;
+ data[i++] = rx_bytes;
+ data[i++] = tx_bytes;
+ data[i++] = rx_alloc_errors;
+ data[i++] = tx_busy_errors;
+ data[i++] = iface_rx_stats->dropped_pkts_fifo_full +
+ iface_rx_stats->err_pkts;
+ data[i++] = iface_tx_stats->dropped;
+ data[i++] = iface_tx_stats->pkts;
+ data[i++] = iface_tx_stats->octs;
+ data[i++] = iface_tx_stats->bcst;
+ data[i++] = iface_tx_stats->mcst;
+ data[i++] = iface_rx_stats->pkts;
+ data[i++] = iface_rx_stats->octets;
+ data[i++] = iface_rx_stats->mcast_pkts;
+ data[i++] = iface_rx_stats->bcast_pkts;
+ data[i++] = iface_rx_stats->dropped_pkts_fifo_full;
+ data[i++] = iface_rx_stats->dropped_octets_fifo_full;
+ data[i++] = iface_rx_stats->err_pkts;
+
+ /* Per Tx Queue stats */
+ for (q = 0; q < oct->num_iqs; q++) {
+ struct octep_vf_iq *iq = oct->iq[q];
+
+ data[i++] = iq->stats.instr_posted;
+ data[i++] = iq->stats.instr_completed;
+ data[i++] = iq->stats.bytes_sent;
+ data[i++] = iq->stats.tx_busy;
+ }
+
+ /* Per Rx Queue stats */
+ for (q = 0; q < oct->num_oqs; q++) {
+ struct octep_vf_oq *oq = oct->oq[q];
+
+ data[i++] = oq->stats.packets;
+ data[i++] = oq->stats.bytes;
+ data[i++] = oq->stats.alloc_failures;
+ }
+}
+
+#define OCTEP_VF_SET_ETHTOOL_LINK_MODES_BITMAP(octep_vf_speeds, ksettings, name) \
+{ \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_10GBASE_T)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 10000baseT_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_10GBASE_R)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 10000baseR_FEC); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_10GBASE_CR)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 10000baseCR_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_10GBASE_KR)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 10000baseKR_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_10GBASE_LR)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 10000baseLR_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_10GBASE_SR)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 10000baseSR_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_25GBASE_CR)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 25000baseCR_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_25GBASE_KR)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 25000baseKR_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_25GBASE_SR)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 25000baseSR_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_40GBASE_CR4)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 40000baseCR4_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_40GBASE_KR4)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 40000baseKR4_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_40GBASE_LR4)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 40000baseLR4_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_40GBASE_SR4)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 40000baseSR4_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_50GBASE_CR2)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 50000baseCR2_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_50GBASE_KR2)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 50000baseKR2_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_50GBASE_SR2)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 50000baseSR2_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_50GBASE_CR)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 50000baseCR_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_50GBASE_KR)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 50000baseKR_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_50GBASE_LR)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 50000baseLR_ER_FR_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_50GBASE_SR)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 50000baseSR_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_100GBASE_CR4)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 100000baseCR4_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_100GBASE_KR4)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 100000baseKR4_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_100GBASE_LR4)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 100000baseLR4_ER4_Full); \
+ if ((octep_vf_speeds) & BIT(OCTEP_VF_LINK_MODE_100GBASE_SR4)) \
+ ethtool_link_ksettings_add_link_mode(ksettings, name, 100000baseSR4_Full); \
+}
+
+static int octep_vf_get_link_ksettings(struct net_device *netdev,
+ struct ethtool_link_ksettings *cmd)
+{
+ struct octep_vf_device *oct = netdev_priv(netdev);
+ struct octep_vf_iface_link_info *link_info;
+ u32 advertised_modes, supported_modes;
+
+ ethtool_link_ksettings_zero_link_mode(cmd, supported);
+ ethtool_link_ksettings_zero_link_mode(cmd, advertising);
+
+ octep_vf_get_link_info(oct);
+
+ advertised_modes = oct->link_info.advertised_modes;
+ supported_modes = oct->link_info.supported_modes;
+ link_info = &oct->link_info;
+
+ OCTEP_VF_SET_ETHTOOL_LINK_MODES_BITMAP(supported_modes, cmd, supported);
+ OCTEP_VF_SET_ETHTOOL_LINK_MODES_BITMAP(advertised_modes, cmd, advertising);
+
+ if (link_info->autoneg) {
+ if (link_info->autoneg & OCTEP_VF_LINK_MODE_AUTONEG_SUPPORTED)
+ ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
+ if (link_info->autoneg & OCTEP_VF_LINK_MODE_AUTONEG_ADVERTISED) {
+ ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
+ cmd->base.autoneg = AUTONEG_ENABLE;
+ } else {
+ cmd->base.autoneg = AUTONEG_DISABLE;
+ }
+ } else {
+ cmd->base.autoneg = AUTONEG_DISABLE;
+ }
+
+ cmd->base.port = PORT_FIBRE;
+ ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
+ ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
+
+ if (netif_carrier_ok(netdev)) {
+ cmd->base.speed = link_info->speed;
+ cmd->base.duplex = DUPLEX_FULL;
+ } else {
+ cmd->base.speed = SPEED_UNKNOWN;
+ cmd->base.duplex = DUPLEX_UNKNOWN;
+ }
+ return 0;
+}
+
+static const struct ethtool_ops octep_vf_ethtool_ops = {
+ .get_drvinfo = octep_vf_get_drvinfo,
+ .get_link = ethtool_op_get_link,
+ .get_strings = octep_vf_get_strings,
+ .get_sset_count = octep_vf_get_sset_count,
+ .get_ethtool_stats = octep_vf_get_ethtool_stats,
+ .get_link_ksettings = octep_vf_get_link_ksettings,
+};
+
+void octep_vf_set_ethtool_ops(struct net_device *netdev)
+{
+ netdev->ethtool_ops = &octep_vf_ethtool_ops;
+}
diff --git a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c
index c39d2fb10cfc..707243d5e6b4 100644
--- a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c
+++ b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c
@@ -1003,6 +1003,7 @@ static int octep_vf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
INIT_WORK(&octep_vf_dev->tx_timeout_task, octep_vf_tx_timeout_task);
netdev->netdev_ops = &octep_vf_netdev_ops;
+ octep_vf_set_ethtool_ops(netdev);
netif_carrier_off(netdev);
netdev->hw_features = NETIF_F_SG;
diff --git a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.h b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.h
index 7d0c18aa6f4d..32e6b5664df5 100644
--- a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.h
+++ b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.h
@@ -298,6 +298,7 @@ void octep_vf_oq_dbell_init(struct octep_vf_device *oct);
void octep_vf_device_setup_cn93(struct octep_vf_device *oct);
int octep_vf_iq_process_completions(struct octep_vf_iq *iq, u16 budget);
int octep_vf_oq_process_rx(struct octep_vf_oq *oq, int budget);
+void octep_vf_set_ethtool_ops(struct net_device *netdev);
int octep_vf_get_link_info(struct octep_vf_device *oct);
int octep_vf_get_if_stats(struct octep_vf_device *oct);
void octep_vf_mbox_work(struct work_struct *work);
diff --git a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_mbox.c b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_mbox.c
index 931dadc14be2..aecb8e56d4e6 100644
--- a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_mbox.c
+++ b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_mbox.c
@@ -105,7 +105,7 @@ static int __octep_vf_mbox_send_cmd(struct octep_vf_device *oct,
long timeout = OCTEP_PFVF_MBOX_WRITE_WAIT_TIME;
struct octep_vf_mbox *mbox = oct->mbox;
u64 reg_val = 0ull;
- int count;
+ int count = 0;
if (!mbox)
return OCTEP_PFVF_MBOX_CMD_STATUS_NOT_SETUP;
@@ -119,6 +119,7 @@ static int __octep_vf_mbox_send_cmd(struct octep_vf_device *oct,
rsp->u64 = reg_val;
break;
}
+ count++;
}
if (count == OCTEP_PFVF_MBOX_TIMEOUT_MS) {
dev_err(&oct->pdev->dev, "mbox send command timed out\n");
--
2.36.0