From 9999e48639b3cecb08ffb37358bcba3b48161b29 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 08:50:17 +0000
Subject: [PATCH] add ax88772_rst
---
kernel/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c | 346 +++++++++++++++++++++++++++++++++++++++------------------
1 files changed, 238 insertions(+), 108 deletions(-)
diff --git a/kernel/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/kernel/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
index 5986fe9..7664ab0 100644
--- a/kernel/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
+++ b/kernel/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
@@ -1,19 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*******************************************************************************
STMMAC Ethtool support
Copyright (C) 2007-2009 STMicroelectronics Ltd
- This program is free software; you can redistribute it and/or modify it
- under the terms and conditions of the GNU General Public License,
- version 2, as published by the Free Software Foundation.
-
- This program is distributed in the hope it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- more details.
-
- The full GNU General Public License is included in this distribution in
- the file called "COPYING".
Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
*******************************************************************************/
@@ -22,16 +12,26 @@
#include <linux/ethtool.h>
#include <linux/interrupt.h>
#include <linux/mii.h>
-#include <linux/phy.h>
+#include <linux/phylink.h>
#include <linux/net_tstamp.h>
#include <asm/io.h>
#include "stmmac.h"
#include "dwmac_dma.h"
+#include "dwxgmac2.h"
#define REG_SPACE_SIZE 0x1060
+#define GMAC4_REG_SPACE_SIZE 0x116C
#define MAC100_ETHTOOL_NAME "st_mac100"
#define GMAC_ETHTOOL_NAME "st_gmac"
+#define XGMAC_ETHTOOL_NAME "st_xgmac"
+
+/* Same as DMA_CHAN_BASE_ADDR defined in dwmac4_dma.h
+ *
+ * It is here because dwmac_dma.h and dwmac4_dam.h can not be included at the
+ * same time due to the conflicting macro names.
+ */
+#define GMAC4_DMA_CHAN_BASE_ADDR 0x00001100
#define ETHTOOL_DMA_OFFSET 55
@@ -42,7 +42,7 @@
};
#define STMMAC_STAT(m) \
- { #m, FIELD_SIZEOF(struct stmmac_extra_stats, m), \
+ { #m, sizeof_field(struct stmmac_extra_stats, m), \
offsetof(struct stmmac_priv, xstats.m)}
static const struct stmmac_stats stmmac_gstrings_stats[] = {
@@ -75,6 +75,7 @@
STMMAC_STAT(rx_missed_cntr),
STMMAC_STAT(rx_overflow_cntr),
STMMAC_STAT(rx_vlan),
+ STMMAC_STAT(rx_split_hdr_pkt_n),
/* Tx/Rx IRQ error info */
STMMAC_STAT(tx_undeflow_irq),
STMMAC_STAT(tx_process_stopped_irq),
@@ -170,7 +171,7 @@
/* HW MAC Management counters (if supported) */
#define STMMAC_MMC_STAT(m) \
- { #m, FIELD_SIZEOF(struct stmmac_counters, m), \
+ { #m, sizeof_field(struct stmmac_counters, m), \
offsetof(struct stmmac_priv, mmc.m)}
static const struct stmmac_stats stmmac_mmc[] = {
@@ -253,6 +254,12 @@
STMMAC_MMC_STAT(mmc_rx_tcp_err_octets),
STMMAC_MMC_STAT(mmc_rx_icmp_gd_octets),
STMMAC_MMC_STAT(mmc_rx_icmp_err_octets),
+ STMMAC_MMC_STAT(mmc_tx_fpe_fragment_cntr),
+ STMMAC_MMC_STAT(mmc_tx_hold_req_cntr),
+ STMMAC_MMC_STAT(mmc_rx_packet_assembly_err_cntr),
+ STMMAC_MMC_STAT(mmc_rx_packet_smd_err_cntr),
+ STMMAC_MMC_STAT(mmc_rx_packet_assembly_ok_cntr),
+ STMMAC_MMC_STAT(mmc_rx_fpe_fragment_cntr),
};
#define STMMAC_MMC_STATS_LEN ARRAY_SIZE(stmmac_mmc)
@@ -263,6 +270,8 @@
if (priv->plat->has_gmac || priv->plat->has_gmac4)
strlcpy(info->driver, GMAC_ETHTOOL_NAME, sizeof(info->driver));
+ else if (priv->plat->has_xgmac)
+ strlcpy(info->driver, XGMAC_ETHTOOL_NAME, sizeof(info->driver));
else
strlcpy(info->driver, MAC100_ETHTOOL_NAME,
sizeof(info->driver));
@@ -274,7 +283,6 @@
struct ethtool_link_ksettings *cmd)
{
struct stmmac_priv *priv = netdev_priv(dev);
- struct phy_device *phy = dev->phydev;
if (priv->hw->pcs & STMMAC_PCS_RGMII ||
priv->hw->pcs & STMMAC_PCS_SGMII) {
@@ -353,18 +361,7 @@
return 0;
}
- if (phy == NULL) {
- pr_err("%s: %s: PHY is not registered\n",
- __func__, dev->name);
- return -ENODEV;
- }
- if (!netif_running(dev)) {
- pr_err("%s: interface is disabled: we cannot track "
- "link speed / duplex setting\n", dev->name);
- return -EBUSY;
- }
- phy_ethtool_ksettings_get(phy, cmd);
- return 0;
+ return phylink_ethtool_ksettings_get(priv->phylink, cmd);
}
static int
@@ -372,8 +369,6 @@
const struct ethtool_link_ksettings *cmd)
{
struct stmmac_priv *priv = netdev_priv(dev);
- struct phy_device *phy = dev->phydev;
- int rc;
if (priv->hw->pcs & STMMAC_PCS_RGMII ||
priv->hw->pcs & STMMAC_PCS_SGMII) {
@@ -397,9 +392,12 @@
return 0;
}
- rc = phy_ethtool_ksettings_set(phy, cmd);
+ if (priv->plat->tx_queues_to_use > 1 && cmd->base.duplex == DUPLEX_HALF) {
+ netdev_warn(priv->dev, "Half-Duplex can only work with single queue\n");
+ return -EINVAL;
+ }
- return rc;
+ return phylink_ethtool_ksettings_set(priv->phylink, cmd);
}
static u32 stmmac_ethtool_getmsglevel(struct net_device *dev)
@@ -424,23 +422,69 @@
static int stmmac_ethtool_get_regs_len(struct net_device *dev)
{
+ struct stmmac_priv *priv = netdev_priv(dev);
+
+ if (priv->plat->has_xgmac)
+ return XGMAC_REGSIZE * 4;
+ else if (priv->plat->has_gmac4)
+ return GMAC4_REG_SPACE_SIZE;
return REG_SPACE_SIZE;
}
static void stmmac_ethtool_gregs(struct net_device *dev,
struct ethtool_regs *regs, void *space)
{
- u32 *reg_space = (u32 *) space;
-
struct stmmac_priv *priv = netdev_priv(dev);
-
- memset(reg_space, 0x0, REG_SPACE_SIZE);
+ u32 *reg_space = (u32 *) space;
stmmac_dump_mac_regs(priv, priv->hw, reg_space);
stmmac_dump_dma_regs(priv, priv->ioaddr, reg_space);
+
/* Copy DMA registers to where ethtool expects them */
- memcpy(®_space[ETHTOOL_DMA_OFFSET], ®_space[DMA_BUS_MODE / 4],
- NUM_DWMAC1000_DMA_REGS * 4);
+ if (priv->plat->has_gmac4) {
+ /* GMAC4 dumps its DMA registers at its DMA_CHAN_BASE_ADDR */
+ memcpy(®_space[ETHTOOL_DMA_OFFSET],
+ ®_space[GMAC4_DMA_CHAN_BASE_ADDR / 4],
+ NUM_DWMAC4_DMA_REGS * 4);
+ } else if (!priv->plat->has_xgmac) {
+ memcpy(®_space[ETHTOOL_DMA_OFFSET],
+ ®_space[DMA_BUS_MODE / 4],
+ NUM_DWMAC1000_DMA_REGS * 4);
+ }
+}
+
+static int stmmac_nway_reset(struct net_device *dev)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+
+ return phylink_ethtool_nway_reset(priv->phylink);
+}
+
+static void stmmac_get_ringparam(struct net_device *netdev,
+ struct ethtool_ringparam *ring)
+{
+ struct stmmac_priv *priv = netdev_priv(netdev);
+
+ ring->rx_max_pending = DMA_MAX_RX_SIZE;
+ ring->tx_max_pending = DMA_MAX_TX_SIZE;
+ ring->rx_pending = priv->dma_rx_size;
+ ring->tx_pending = priv->dma_tx_size;
+}
+
+static int stmmac_set_ringparam(struct net_device *netdev,
+ struct ethtool_ringparam *ring)
+{
+ if (ring->rx_mini_pending || ring->rx_jumbo_pending ||
+ ring->rx_pending < DMA_MIN_RX_SIZE ||
+ ring->rx_pending > DMA_MAX_RX_SIZE ||
+ !is_power_of_2(ring->rx_pending) ||
+ ring->tx_pending < DMA_MIN_TX_SIZE ||
+ ring->tx_pending > DMA_MAX_TX_SIZE ||
+ !is_power_of_2(ring->tx_pending))
+ return -EINVAL;
+
+ return stmmac_reinit_ringparam(netdev, ring->rx_pending,
+ ring->tx_pending);
}
static void
@@ -450,26 +494,13 @@
struct stmmac_priv *priv = netdev_priv(netdev);
struct rgmii_adv adv_lp;
- pause->rx_pause = 0;
- pause->tx_pause = 0;
-
if (priv->hw->pcs && !stmmac_pcs_get_adv_lp(priv, priv->ioaddr, &adv_lp)) {
pause->autoneg = 1;
if (!adv_lp.pause)
return;
} else {
- if (!(netdev->phydev->supported & SUPPORTED_Pause) ||
- !(netdev->phydev->supported & SUPPORTED_Asym_Pause))
- return;
+ phylink_ethtool_get_pauseparam(priv->phylink, pause);
}
-
- pause->autoneg = netdev->phydev->autoneg;
-
- if (priv->flow_ctrl & FLOW_RX)
- pause->rx_pause = 1;
- if (priv->flow_ctrl & FLOW_TX)
- pause->tx_pause = 1;
-
}
static int
@@ -477,37 +508,16 @@
struct ethtool_pauseparam *pause)
{
struct stmmac_priv *priv = netdev_priv(netdev);
- u32 tx_cnt = priv->plat->tx_queues_to_use;
- struct phy_device *phy = netdev->phydev;
- int new_pause = FLOW_OFF;
struct rgmii_adv adv_lp;
if (priv->hw->pcs && !stmmac_pcs_get_adv_lp(priv, priv->ioaddr, &adv_lp)) {
pause->autoneg = 1;
if (!adv_lp.pause)
return -EOPNOTSUPP;
+ return 0;
} else {
- if (!(phy->supported & SUPPORTED_Pause) ||
- !(phy->supported & SUPPORTED_Asym_Pause))
- return -EOPNOTSUPP;
+ return phylink_ethtool_set_pauseparam(priv->phylink, pause);
}
-
- if (pause->rx_pause)
- new_pause |= FLOW_RX;
- if (pause->tx_pause)
- new_pause |= FLOW_TX;
-
- priv->flow_ctrl = new_pause;
- phy->autoneg = pause->autoneg;
-
- if (phy->autoneg) {
- if (netif_running(netdev))
- return phy_start_aneg(phy);
- }
-
- stmmac_flow_ctrl(priv, priv->hw, phy->duplex, priv->flow_ctrl,
- priv->pause, tx_cnt);
- return 0;
}
static void stmmac_get_ethtool_stats(struct net_device *dev,
@@ -533,7 +543,7 @@
if (ret) {
/* If supported, for new GMAC chips expose the MMC counters */
if (priv->dma_cap.rmon) {
- dwmac_mmc_read(priv->mmcaddr, &priv->mmc);
+ stmmac_mmc_read(priv, priv->mmcaddr, &priv->mmc);
for (i = 0; i < STMMAC_MMC_STATS_LEN; i++) {
char *p;
@@ -545,7 +555,7 @@
}
}
if (priv->eee_enabled) {
- int val = phy_get_eee_err(dev->phydev);
+ int val = phylink_get_eee_err(priv->phylink);
if (val)
priv->xstats.phy_eee_wakeup_error_n = val;
}
@@ -585,6 +595,8 @@
}
return len;
+ case ETH_SS_TEST:
+ return stmmac_selftest_get_count(priv);
default:
return -EOPNOTSUPP;
}
@@ -621,6 +633,9 @@
p += ETH_GSTRING_LEN;
}
break;
+ case ETH_SS_TEST:
+ stmmac_selftest_get_strings(priv, p);
+ break;
default:
WARN_ON(1);
break;
@@ -632,9 +647,14 @@
{
struct stmmac_priv *priv = netdev_priv(dev);
+ if (!priv->plat->pmt)
+ return phylink_ethtool_get_wol(priv->phylink, wol);
+
mutex_lock(&priv->lock);
if (device_can_wakeup(priv->device)) {
wol->supported = WAKE_MAGIC | WAKE_UCAST;
+ if (priv->hw_cap_support && !priv->dma_cap.pmt_magic_frame)
+ wol->supported &= ~WAKE_MAGIC;
wol->wolopts = priv->wolopts;
}
mutex_unlock(&priv->lock);
@@ -645,14 +665,22 @@
struct stmmac_priv *priv = netdev_priv(dev);
u32 support = WAKE_MAGIC | WAKE_UCAST;
+ if (!device_can_wakeup(priv->device))
+ return -EOPNOTSUPP;
+
+ if (!priv->plat->pmt) {
+ int ret = phylink_ethtool_set_wol(priv->phylink, wol);
+
+ if (!ret)
+ device_set_wakeup_enable(priv->device, !!wol->wolopts);
+ return ret;
+ }
+
/* By default almost all GMAC devices support the WoL via
* magic frame but we can disable it if the HW capability
* register shows no support for pmt_magic_frame. */
if ((priv->hw_cap_support) && (!priv->dma_cap.pmt_magic_frame))
wol->wolopts &= ~WAKE_MAGIC;
-
- if (!device_can_wakeup(priv->device))
- return -EINVAL;
if (wol->wolopts & ~support)
return -EINVAL;
@@ -684,8 +712,9 @@
edata->eee_enabled = priv->eee_enabled;
edata->eee_active = priv->eee_active;
edata->tx_lpi_timer = priv->tx_lpi_timer;
+ edata->tx_lpi_enabled = priv->tx_lpi_enabled;
- return phy_ethtool_get_eee(dev->phydev, edata);
+ return phylink_ethtool_get_eee(priv->phylink, edata);
}
static int stmmac_ethtool_op_set_eee(struct net_device *dev,
@@ -697,14 +726,23 @@
if (!priv->dma_cap.eee)
return -EOPNOTSUPP;
+ if (priv->tx_lpi_enabled != edata->tx_lpi_enabled)
+ netdev_warn(priv->dev,
+ "Setting EEE tx-lpi is not supported\n");
+
if (!edata->eee_enabled)
stmmac_disable_eee_mode(priv);
- ret = phy_ethtool_set_eee(dev->phydev, edata);
+ ret = phylink_ethtool_set_eee(priv->phylink, edata);
if (ret)
return ret;
- priv->tx_lpi_timer = edata->tx_lpi_timer;
+ if (edata->eee_enabled &&
+ priv->tx_lpi_timer != edata->tx_lpi_timer) {
+ priv->tx_lpi_timer = edata->tx_lpi_timer;
+ stmmac_eee_init(priv);
+ }
+
return 0;
}
@@ -742,8 +780,10 @@
ec->tx_coalesce_usecs = priv->tx_coal_timer;
ec->tx_max_coalesced_frames = priv->tx_coal_frames;
- if (priv->use_riwt)
+ if (priv->use_riwt) {
+ ec->rx_max_coalesced_frames = priv->rx_coal_frames;
ec->rx_coalesce_usecs = stmmac_riwt2usec(priv->rx_riwt, priv);
+ }
return 0;
}
@@ -755,22 +795,15 @@
u32 rx_cnt = priv->plat->rx_queues_to_use;
unsigned int rx_riwt;
- /* Check not supported parameters */
- if ((ec->rx_max_coalesced_frames) || (ec->rx_coalesce_usecs_irq) ||
- (ec->rx_max_coalesced_frames_irq) || (ec->tx_coalesce_usecs_irq) ||
- (ec->use_adaptive_rx_coalesce) || (ec->use_adaptive_tx_coalesce) ||
- (ec->pkt_rate_low) || (ec->rx_coalesce_usecs_low) ||
- (ec->rx_max_coalesced_frames_low) || (ec->tx_coalesce_usecs_high) ||
- (ec->tx_max_coalesced_frames_low) || (ec->pkt_rate_high) ||
- (ec->tx_coalesce_usecs_low) || (ec->rx_coalesce_usecs_high) ||
- (ec->rx_max_coalesced_frames_high) ||
- (ec->tx_max_coalesced_frames_irq) ||
- (ec->stats_block_coalesce_usecs) ||
- (ec->tx_max_coalesced_frames_high) || (ec->rate_sample_interval))
- return -EOPNOTSUPP;
+ if (priv->use_riwt && (ec->rx_coalesce_usecs > 0)) {
+ rx_riwt = stmmac_usec2riwt(ec->rx_coalesce_usecs, priv);
- if (ec->rx_coalesce_usecs == 0)
- return -EINVAL;
+ if ((rx_riwt > MAX_DMA_RIWT) || (rx_riwt < MIN_DMA_RIWT))
+ return -EINVAL;
+
+ priv->rx_riwt = rx_riwt;
+ stmmac_rx_watchdog(priv, priv->ioaddr, priv->rx_riwt, rx_cnt);
+ }
if ((ec->tx_coalesce_usecs == 0) &&
(ec->tx_max_coalesced_frames == 0))
@@ -780,20 +813,105 @@
(ec->tx_max_coalesced_frames > STMMAC_TX_MAX_FRAMES))
return -EINVAL;
- rx_riwt = stmmac_usec2riwt(ec->rx_coalesce_usecs, priv);
-
- if ((rx_riwt > MAX_DMA_RIWT) || (rx_riwt < MIN_DMA_RIWT))
- return -EINVAL;
- else if (!priv->use_riwt)
- return -EOPNOTSUPP;
-
/* Only copy relevant parameters, ignore all others. */
priv->tx_coal_frames = ec->tx_max_coalesced_frames;
priv->tx_coal_timer = ec->tx_coalesce_usecs;
- priv->rx_riwt = rx_riwt;
- stmmac_rx_watchdog(priv, priv->ioaddr, priv->rx_riwt, rx_cnt);
+ priv->rx_coal_frames = ec->rx_max_coalesced_frames;
+ return 0;
+}
+
+static int stmmac_get_rxnfc(struct net_device *dev,
+ struct ethtool_rxnfc *rxnfc, u32 *rule_locs)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+
+ switch (rxnfc->cmd) {
+ case ETHTOOL_GRXRINGS:
+ rxnfc->data = priv->plat->rx_queues_to_use;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
return 0;
+}
+
+static u32 stmmac_get_rxfh_key_size(struct net_device *dev)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+
+ return sizeof(priv->rss.key);
+}
+
+static u32 stmmac_get_rxfh_indir_size(struct net_device *dev)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+
+ return ARRAY_SIZE(priv->rss.table);
+}
+
+static int stmmac_get_rxfh(struct net_device *dev, u32 *indir, u8 *key,
+ u8 *hfunc)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+ int i;
+
+ if (indir) {
+ for (i = 0; i < ARRAY_SIZE(priv->rss.table); i++)
+ indir[i] = priv->rss.table[i];
+ }
+
+ if (key)
+ memcpy(key, priv->rss.key, sizeof(priv->rss.key));
+ if (hfunc)
+ *hfunc = ETH_RSS_HASH_TOP;
+
+ return 0;
+}
+
+static int stmmac_set_rxfh(struct net_device *dev, const u32 *indir,
+ const u8 *key, const u8 hfunc)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+ int i;
+
+ if ((hfunc != ETH_RSS_HASH_NO_CHANGE) && (hfunc != ETH_RSS_HASH_TOP))
+ return -EOPNOTSUPP;
+
+ if (indir) {
+ for (i = 0; i < ARRAY_SIZE(priv->rss.table); i++)
+ priv->rss.table[i] = indir[i];
+ }
+
+ if (key)
+ memcpy(priv->rss.key, key, sizeof(priv->rss.key));
+
+ return stmmac_rss_configure(priv, priv->hw, &priv->rss,
+ priv->plat->rx_queues_to_use);
+}
+
+static void stmmac_get_channels(struct net_device *dev,
+ struct ethtool_channels *chan)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+
+ chan->rx_count = priv->plat->rx_queues_to_use;
+ chan->tx_count = priv->plat->tx_queues_to_use;
+ chan->max_rx = priv->dma_cap.number_rx_queues;
+ chan->max_tx = priv->dma_cap.number_tx_queues;
+}
+
+static int stmmac_set_channels(struct net_device *dev,
+ struct ethtool_channels *chan)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+
+ if (chan->rx_count > priv->dma_cap.number_rx_queues ||
+ chan->tx_count > priv->dma_cap.number_tx_queues ||
+ !chan->rx_count || !chan->tx_count)
+ return -EINVAL;
+
+ return stmmac_reinit_queues(dev, chan->rx_count, chan->tx_count);
}
static int stmmac_get_ts_info(struct net_device *dev,
@@ -869,6 +987,8 @@
}
static const struct ethtool_ops stmmac_ethtool_ops = {
+ .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
+ ETHTOOL_COALESCE_MAX_FRAMES,
.begin = stmmac_check_if_running,
.get_drvinfo = stmmac_ethtool_getdrvinfo,
.get_msglevel = stmmac_ethtool_getmsglevel,
@@ -876,9 +996,12 @@
.get_regs = stmmac_ethtool_gregs,
.get_regs_len = stmmac_ethtool_get_regs_len,
.get_link = ethtool_op_get_link,
- .nway_reset = phy_ethtool_nway_reset,
+ .nway_reset = stmmac_nway_reset,
+ .get_ringparam = stmmac_get_ringparam,
+ .set_ringparam = stmmac_set_ringparam,
.get_pauseparam = stmmac_get_pauseparam,
.set_pauseparam = stmmac_set_pauseparam,
+ .self_test = stmmac_selftest_run,
.get_ethtool_stats = stmmac_get_ethtool_stats,
.get_strings = stmmac_get_strings,
.get_wol = stmmac_get_wol,
@@ -886,9 +1009,16 @@
.get_eee = stmmac_ethtool_op_get_eee,
.set_eee = stmmac_ethtool_op_set_eee,
.get_sset_count = stmmac_get_sset_count,
+ .get_rxnfc = stmmac_get_rxnfc,
+ .get_rxfh_key_size = stmmac_get_rxfh_key_size,
+ .get_rxfh_indir_size = stmmac_get_rxfh_indir_size,
+ .get_rxfh = stmmac_get_rxfh,
+ .set_rxfh = stmmac_set_rxfh,
.get_ts_info = stmmac_get_ts_info,
.get_coalesce = stmmac_get_coalesce,
.set_coalesce = stmmac_set_coalesce,
+ .get_channels = stmmac_get_channels,
+ .set_channels = stmmac_set_channels,
.get_tunable = stmmac_get_tunable,
.set_tunable = stmmac_set_tunable,
.get_link_ksettings = stmmac_ethtool_get_link_ksettings,
--
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