sfc: move some ethtool code

Various ethtool entry points are moved.

Signed-off-by: Alexandru-Mihai Maftei <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/ethernet/sfc/Makefile

···
 # SPDX-License-Identifier: GPL-2.0
 sfc-y			+= efx.o efx_common.o efx_channels.o nic.o \
 			   farch.o siena.o ef10.o \
-			   tx.o tx_common.o rx.o rx_common.o \
-			   selftest.o ethtool.o ptp.o tx_tso.o \
+			   tx.o tx_common.o tx_tso.o rx.o rx_common.o \
+			   selftest.o ethtool.o ethtool_common.o ptp.o \
 			   mcdi.o mcdi_port.o mcdi_port_common.o \
 			   mcdi_functions.o mcdi_mon.o
 sfc-$(CONFIG_SFC_MTD)	+= mtd.o

drivers/net/ethernet/sfc/ethtool.c

···
 #include "efx_channels.h"
 #include "rx_common.h"
 #include "tx_common.h"
+#include "ethtool_common.h"
 #include "filter.h"
 #include "nic.h"
-
-struct efx_sw_stat_desc {
-	const char *name;
-	enum {
-		EFX_ETHTOOL_STAT_SOURCE_nic,
-		EFX_ETHTOOL_STAT_SOURCE_channel,
-		EFX_ETHTOOL_STAT_SOURCE_tx_queue
-	} source;
-	unsigned offset;
-	u64(*get_stat) (void *field); /* Reader function */
-};
-
-/* Initialiser for a struct efx_sw_stat_desc with type-checking */
-#define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
-				get_stat_function) {			\
-	.name = #stat_name,						\
-	.source = EFX_ETHTOOL_STAT_SOURCE_##source_name,		\
-	.offset = ((((field_type *) 0) ==				\
-		      &((struct efx_##source_name *)0)->field) ?	\
-		    offsetof(struct efx_##source_name, field) :		\
-		    offsetof(struct efx_##source_name, field)),		\
-	.get_stat = get_stat_function,					\
-}
-
-static u64 efx_get_uint_stat(void *field)
-{
-	return *(unsigned int *)field;
-}
-
-static u64 efx_get_atomic_stat(void *field)
-{
-	return atomic_read((atomic_t *) field);
-}
-
-#define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field)		\
-	EFX_ETHTOOL_STAT(field, nic, field,			\
-			 atomic_t, efx_get_atomic_stat)
-
-#define EFX_ETHTOOL_UINT_CHANNEL_STAT(field)			\
-	EFX_ETHTOOL_STAT(field, channel, n_##field,		\
-			 unsigned int, efx_get_uint_stat)
-#define EFX_ETHTOOL_UINT_CHANNEL_STAT_NO_N(field)		\
-	EFX_ETHTOOL_STAT(field, channel, field,			\
-			 unsigned int, efx_get_uint_stat)
-
-#define EFX_ETHTOOL_UINT_TXQ_STAT(field)			\
-	EFX_ETHTOOL_STAT(tx_##field, tx_queue, field,		\
-			 unsigned int, efx_get_uint_stat)
-
-static const struct efx_sw_stat_desc efx_sw_stat_desc[] = {
-	EFX_ETHTOOL_UINT_TXQ_STAT(merge_events),
-	EFX_ETHTOOL_UINT_TXQ_STAT(tso_bursts),
-	EFX_ETHTOOL_UINT_TXQ_STAT(tso_long_headers),
-	EFX_ETHTOOL_UINT_TXQ_STAT(tso_packets),
-	EFX_ETHTOOL_UINT_TXQ_STAT(tso_fallbacks),
-	EFX_ETHTOOL_UINT_TXQ_STAT(pushes),
-	EFX_ETHTOOL_UINT_TXQ_STAT(pio_packets),
-	EFX_ETHTOOL_UINT_TXQ_STAT(cb_packets),
-	EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_inner_ip_hdr_chksum_err),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_inner_tcp_udp_chksum_err),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_outer_ip_hdr_chksum_err),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_outer_tcp_udp_chksum_err),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_eth_crc_err),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_mcast_mismatch),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_events),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_packets),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_drops),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_bad_drops),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_tx),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_redirect),
-#ifdef CONFIG_RFS_ACCEL
-	EFX_ETHTOOL_UINT_CHANNEL_STAT_NO_N(rfs_filter_count),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rfs_succeeded),
-	EFX_ETHTOOL_UINT_CHANNEL_STAT(rfs_failed),
-#endif
-};
-
-#define EFX_ETHTOOL_SW_STAT_COUNT ARRAY_SIZE(efx_sw_stat_desc)
 
 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
 
···
 	return rc;
 }
 
-static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
-				    struct ethtool_drvinfo *info)
-{
-	struct efx_nic *efx = netdev_priv(net_dev);
-
-	strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
-	strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
-	efx_mcdi_print_fwver(efx, info->fw_version,
-			     sizeof(info->fw_version));
-	strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
-}
-
 static int efx_ethtool_get_regs_len(struct net_device *net_dev)
 {
 	return efx_nic_get_regs_len(netdev_priv(net_dev));
···
 
 	regs->version = efx->type->revision;
 	efx_nic_get_regs(efx, buf);
-}
-
-static u32 efx_ethtool_get_msglevel(struct net_device *net_dev)
-{
-	struct efx_nic *efx = netdev_priv(net_dev);
-	return efx->msg_enable;
-}
-
-static void efx_ethtool_set_msglevel(struct net_device *net_dev, u32 msg_enable)
-{
-	struct efx_nic *efx = netdev_priv(net_dev);
-	efx->msg_enable = msg_enable;
-}
-
-/**
- * efx_fill_test - fill in an individual self-test entry
- * @test_index:		Index of the test
- * @strings:		Ethtool strings, or %NULL
- * @data:		Ethtool test results, or %NULL
- * @test:		Pointer to test result (used only if data != %NULL)
- * @unit_format:	Unit name format (e.g. "chan\%d")
- * @unit_id:		Unit id (e.g. 0 for "chan0")
- * @test_format:	Test name format (e.g. "loopback.\%s.tx.sent")
- * @test_id:		Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
- *
- * Fill in an individual self-test entry.
- */
-static void efx_fill_test(unsigned int test_index, u8 *strings, u64 *data,
-			  int *test, const char *unit_format, int unit_id,
-			  const char *test_format, const char *test_id)
-{
-	char unit_str[ETH_GSTRING_LEN], test_str[ETH_GSTRING_LEN];
-
-	/* Fill data value, if applicable */
-	if (data)
-		data[test_index] = *test;
-
-	/* Fill string, if applicable */
-	if (strings) {
-		if (strchr(unit_format, '%'))
-			snprintf(unit_str, sizeof(unit_str),
-				 unit_format, unit_id);
-		else
-			strcpy(unit_str, unit_format);
-		snprintf(test_str, sizeof(test_str), test_format, test_id);
-		snprintf(strings + test_index * ETH_GSTRING_LEN,
-			 ETH_GSTRING_LEN,
-			 "%-6s %-24s", unit_str, test_str);
-	}
-}
-
-#define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
-#define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
-#define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
-#define EFX_LOOPBACK_NAME(_mode, _counter)			\
-	"loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
-
-/**
- * efx_fill_loopback_test - fill in a block of loopback self-test entries
- * @efx:		Efx NIC
- * @lb_tests:		Efx loopback self-test results structure
- * @mode:		Loopback test mode
- * @test_index:		Starting index of the test
- * @strings:		Ethtool strings, or %NULL
- * @data:		Ethtool test results, or %NULL
- *
- * Fill in a block of loopback self-test entries.  Return new test
- * index.
- */
-static int efx_fill_loopback_test(struct efx_nic *efx,
-				  struct efx_loopback_self_tests *lb_tests,
-				  enum efx_loopback_mode mode,
-				  unsigned int test_index,
-				  u8 *strings, u64 *data)
-{
-	struct efx_channel *channel =
-		efx_get_channel(efx, efx->tx_channel_offset);
-	struct efx_tx_queue *tx_queue;
-
-	efx_for_each_channel_tx_queue(tx_queue, channel) {
-		efx_fill_test(test_index++, strings, data,
-			      &lb_tests->tx_sent[tx_queue->queue],
-			      EFX_TX_QUEUE_NAME(tx_queue),
-			      EFX_LOOPBACK_NAME(mode, "tx_sent"));
-		efx_fill_test(test_index++, strings, data,
-			      &lb_tests->tx_done[tx_queue->queue],
-			      EFX_TX_QUEUE_NAME(tx_queue),
-			      EFX_LOOPBACK_NAME(mode, "tx_done"));
-	}
-	efx_fill_test(test_index++, strings, data,
-		      &lb_tests->rx_good,
-		      "rx", 0,
-		      EFX_LOOPBACK_NAME(mode, "rx_good"));
-	efx_fill_test(test_index++, strings, data,
-		      &lb_tests->rx_bad,
-		      "rx", 0,
-		      EFX_LOOPBACK_NAME(mode, "rx_bad"));
-
-	return test_index;
-}
-
-/**
- * efx_ethtool_fill_self_tests - get self-test details
- * @efx:		Efx NIC
- * @tests:		Efx self-test results structure, or %NULL
- * @strings:		Ethtool strings, or %NULL
- * @data:		Ethtool test results, or %NULL
- *
- * Get self-test number of strings, strings, and/or test results.
- * Return number of strings (== number of test results).
- *
- * The reason for merging these three functions is to make sure that
- * they can never be inconsistent.
- */
-static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
-				       struct efx_self_tests *tests,
-				       u8 *strings, u64 *data)
-{
-	struct efx_channel *channel;
-	unsigned int n = 0, i;
-	enum efx_loopback_mode mode;
-
-	efx_fill_test(n++, strings, data, &tests->phy_alive,
-		      "phy", 0, "alive", NULL);
-	efx_fill_test(n++, strings, data, &tests->nvram,
-		      "core", 0, "nvram", NULL);
-	efx_fill_test(n++, strings, data, &tests->interrupt,
-		      "core", 0, "interrupt", NULL);
-
-	/* Event queues */
-	efx_for_each_channel(channel, efx) {
-		efx_fill_test(n++, strings, data,
-			      &tests->eventq_dma[channel->channel],
-			      EFX_CHANNEL_NAME(channel),
-			      "eventq.dma", NULL);
-		efx_fill_test(n++, strings, data,
-			      &tests->eventq_int[channel->channel],
-			      EFX_CHANNEL_NAME(channel),
-			      "eventq.int", NULL);
-	}
-
-	efx_fill_test(n++, strings, data, &tests->memory,
-		      "core", 0, "memory", NULL);
-	efx_fill_test(n++, strings, data, &tests->registers,
-		      "core", 0, "registers", NULL);
-
-	if (efx->phy_op->run_tests != NULL) {
-		EFX_WARN_ON_PARANOID(efx->phy_op->test_name == NULL);
-
-		for (i = 0; true; ++i) {
-			const char *name;
-
-			EFX_WARN_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
-			name = efx->phy_op->test_name(efx, i);
-			if (name == NULL)
-				break;
-
-			efx_fill_test(n++, strings, data, &tests->phy_ext[i],
-				      "phy", 0, name, NULL);
-		}
-	}
-
-	/* Loopback tests */
-	for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
-		if (!(efx->loopback_modes & (1 << mode)))
-			continue;
-		n = efx_fill_loopback_test(efx,
-					   &tests->loopback[mode], mode, n,
-					   strings, data);
-	}
-
-	return n;
-}
-
-static size_t efx_describe_per_queue_stats(struct efx_nic *efx, u8 *strings)
-{
-	size_t n_stats = 0;
-	struct efx_channel *channel;
-
-	efx_for_each_channel(channel, efx) {
-		if (efx_channel_has_tx_queues(channel)) {
-			n_stats++;
-			if (strings != NULL) {
-				snprintf(strings, ETH_GSTRING_LEN,
-					 "tx-%u.tx_packets",
-					 channel->tx_queue[0].queue /
-					 EFX_TXQ_TYPES);
-
-				strings += ETH_GSTRING_LEN;
-			}
-		}
-	}
-	efx_for_each_channel(channel, efx) {
-		if (efx_channel_has_rx_queue(channel)) {
-			n_stats++;
-			if (strings != NULL) {
-				snprintf(strings, ETH_GSTRING_LEN,
-					 "rx-%d.rx_packets", channel->channel);
-				strings += ETH_GSTRING_LEN;
-			}
-		}
-	}
-	if (efx->xdp_tx_queue_count && efx->xdp_tx_queues) {
-		unsigned short xdp;
-
-		for (xdp = 0; xdp < efx->xdp_tx_queue_count; xdp++) {
-			n_stats++;
-			if (strings) {
-				snprintf(strings, ETH_GSTRING_LEN,
-					 "tx-xdp-cpu-%hu.tx_packets", xdp);
-				strings += ETH_GSTRING_LEN;
-			}
-		}
-	}
-
-	return n_stats;
-}
-
-static int efx_ethtool_get_sset_count(struct net_device *net_dev,
-				      int string_set)
-{
-	struct efx_nic *efx = netdev_priv(net_dev);
-
-	switch (string_set) {
-	case ETH_SS_STATS:
-		return efx->type->describe_stats(efx, NULL) +
-		       EFX_ETHTOOL_SW_STAT_COUNT +
-		       efx_describe_per_queue_stats(efx, NULL) +
-		       efx_ptp_describe_stats(efx, NULL);
-	case ETH_SS_TEST:
-		return efx_ethtool_fill_self_tests(efx, NULL, NULL, NULL);
-	default:
-		return -EINVAL;
-	}
-}
-
-static void efx_ethtool_get_strings(struct net_device *net_dev,
-				    u32 string_set, u8 *strings)
-{
-	struct efx_nic *efx = netdev_priv(net_dev);
-	int i;
-
-	switch (string_set) {
-	case ETH_SS_STATS:
-		strings += (efx->type->describe_stats(efx, strings) *
-			    ETH_GSTRING_LEN);
-		for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++)
-			strlcpy(strings + i * ETH_GSTRING_LEN,
-				efx_sw_stat_desc[i].name, ETH_GSTRING_LEN);
-		strings += EFX_ETHTOOL_SW_STAT_COUNT * ETH_GSTRING_LEN;
-		strings += (efx_describe_per_queue_stats(efx, strings) *
-			    ETH_GSTRING_LEN);
-		efx_ptp_describe_stats(efx, strings);
-		break;
-	case ETH_SS_TEST:
-		efx_ethtool_fill_self_tests(efx, NULL, strings, NULL);
-		break;
-	default:
-		/* No other string sets */
-		break;
-	}
-}
-
-static void efx_ethtool_get_stats(struct net_device *net_dev,
-				  struct ethtool_stats *stats,
-				  u64 *data)
-{
-	struct efx_nic *efx = netdev_priv(net_dev);
-	const struct efx_sw_stat_desc *stat;
-	struct efx_channel *channel;
-	struct efx_tx_queue *tx_queue;
-	struct efx_rx_queue *rx_queue;
-	int i;
-
-	spin_lock_bh(&efx->stats_lock);
-
-	/* Get NIC statistics */
-	data += efx->type->update_stats(efx, data, NULL);
-
-	/* Get software statistics */
-	for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++) {
-		stat = &efx_sw_stat_desc[i];
-		switch (stat->source) {
-		case EFX_ETHTOOL_STAT_SOURCE_nic:
-			data[i] = stat->get_stat((void *)efx + stat->offset);
-			break;
-		case EFX_ETHTOOL_STAT_SOURCE_channel:
-			data[i] = 0;
-			efx_for_each_channel(channel, efx)
-				data[i] += stat->get_stat((void *)channel +
-							  stat->offset);
-			break;
-		case EFX_ETHTOOL_STAT_SOURCE_tx_queue:
-			data[i] = 0;
-			efx_for_each_channel(channel, efx) {
-				efx_for_each_channel_tx_queue(tx_queue, channel)
-					data[i] +=
-						stat->get_stat((void *)tx_queue
-							       + stat->offset);
-			}
-			break;
-		}
-	}
-	data += EFX_ETHTOOL_SW_STAT_COUNT;
-
-	spin_unlock_bh(&efx->stats_lock);
-
-	efx_for_each_channel(channel, efx) {
-		if (efx_channel_has_tx_queues(channel)) {
-			*data = 0;
-			efx_for_each_channel_tx_queue(tx_queue, channel) {
-				*data += tx_queue->tx_packets;
-			}
-			data++;
-		}
-	}
-	efx_for_each_channel(channel, efx) {
-		if (efx_channel_has_rx_queue(channel)) {
-			*data = 0;
-			efx_for_each_channel_rx_queue(rx_queue, channel) {
-				*data += rx_queue->rx_packets;
-			}
-			data++;
-		}
-	}
-	if (efx->xdp_tx_queue_count && efx->xdp_tx_queues) {
-		int xdp;
-
-		for (xdp = 0; xdp < efx->xdp_tx_queue_count; xdp++) {
-			data[0] = efx->xdp_tx_queues[xdp]->tx_packets;
-			data++;
-		}
-	}
-
-	efx_ptp_update_stats(efx, data);
 }
 
 static void efx_ethtool_self_test(struct net_device *net_dev,
···
 	mutex_unlock(&efx->mac_lock);
 
 	return rc;
-}
-
-static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
-				       struct ethtool_pauseparam *pause)
-{
-	struct efx_nic *efx = netdev_priv(net_dev);
-
-	pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
-	pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
-	pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
 }
 
 static void efx_ethtool_get_wol(struct net_device *net_dev,

drivers/net/ethernet/sfc/ethtool_common.c

···
+// SPDX-License-Identifier: GPL-2.0-only
+/****************************************************************************
+ * Driver for Solarflare network controllers and boards
+ * Copyright 2019 Solarflare Communications Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation, incorporated herein by reference.
+ */
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include "net_driver.h"
+#include "mcdi.h"
+#include "nic.h"
+#include "selftest.h"
+#include "ethtool_common.h"
+
+struct efx_sw_stat_desc {
+	const char *name;
+	enum {
+		EFX_ETHTOOL_STAT_SOURCE_nic,
+		EFX_ETHTOOL_STAT_SOURCE_channel,
+		EFX_ETHTOOL_STAT_SOURCE_tx_queue
+	} source;
+	unsigned int offset;
+	u64 (*get_stat)(void *field); /* Reader function */
+};
+
+/* Initialiser for a struct efx_sw_stat_desc with type-checking */
+#define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
+				get_stat_function) {			\
+	.name = #stat_name,						\
+	.source = EFX_ETHTOOL_STAT_SOURCE_##source_name,		\
+	.offset = ((((field_type *) 0) ==				\
+		      &((struct efx_##source_name *)0)->field) ?	\
+		    offsetof(struct efx_##source_name, field) :		\
+		    offsetof(struct efx_##source_name, field)),		\
+	.get_stat = get_stat_function,					\
+}
+
+static u64 efx_get_uint_stat(void *field)
+{
+	return *(unsigned int *)field;
+}
+
+static u64 efx_get_atomic_stat(void *field)
+{
+	return atomic_read((atomic_t *) field);
+}
+
+#define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field)		\
+	EFX_ETHTOOL_STAT(field, nic, field,			\
+			 atomic_t, efx_get_atomic_stat)
+
+#define EFX_ETHTOOL_UINT_CHANNEL_STAT(field)			\
+	EFX_ETHTOOL_STAT(field, channel, n_##field,		\
+			 unsigned int, efx_get_uint_stat)
+#define EFX_ETHTOOL_UINT_CHANNEL_STAT_NO_N(field)		\
+	EFX_ETHTOOL_STAT(field, channel, field,			\
+			 unsigned int, efx_get_uint_stat)
+
+#define EFX_ETHTOOL_UINT_TXQ_STAT(field)			\
+	EFX_ETHTOOL_STAT(tx_##field, tx_queue, field,		\
+			 unsigned int, efx_get_uint_stat)
+
+static const struct efx_sw_stat_desc efx_sw_stat_desc[] = {
+	EFX_ETHTOOL_UINT_TXQ_STAT(merge_events),
+	EFX_ETHTOOL_UINT_TXQ_STAT(tso_bursts),
+	EFX_ETHTOOL_UINT_TXQ_STAT(tso_long_headers),
+	EFX_ETHTOOL_UINT_TXQ_STAT(tso_packets),
+	EFX_ETHTOOL_UINT_TXQ_STAT(tso_fallbacks),
+	EFX_ETHTOOL_UINT_TXQ_STAT(pushes),
+	EFX_ETHTOOL_UINT_TXQ_STAT(pio_packets),
+	EFX_ETHTOOL_UINT_TXQ_STAT(cb_packets),
+	EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_inner_ip_hdr_chksum_err),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_inner_tcp_udp_chksum_err),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_outer_ip_hdr_chksum_err),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_outer_tcp_udp_chksum_err),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_eth_crc_err),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_mcast_mismatch),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_events),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_packets),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_drops),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_bad_drops),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_tx),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_redirect),
+#ifdef CONFIG_RFS_ACCEL
+	EFX_ETHTOOL_UINT_CHANNEL_STAT_NO_N(rfs_filter_count),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rfs_succeeded),
+	EFX_ETHTOOL_UINT_CHANNEL_STAT(rfs_failed),
+#endif
+};
+
+#define EFX_ETHTOOL_SW_STAT_COUNT ARRAY_SIZE(efx_sw_stat_desc)
+
+void efx_ethtool_get_drvinfo(struct net_device *net_dev,
+			     struct ethtool_drvinfo *info)
+{
+	struct efx_nic *efx = netdev_priv(net_dev);
+
+	strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
+	strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
+	efx_mcdi_print_fwver(efx, info->fw_version,
+			     sizeof(info->fw_version));
+	strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
+}
+
+u32 efx_ethtool_get_msglevel(struct net_device *net_dev)
+{
+	struct efx_nic *efx = netdev_priv(net_dev);
+
+	return efx->msg_enable;
+}
+
+void efx_ethtool_set_msglevel(struct net_device *net_dev, u32 msg_enable)
+{
+	struct efx_nic *efx = netdev_priv(net_dev);
+
+	efx->msg_enable = msg_enable;
+}
+
+void efx_ethtool_get_pauseparam(struct net_device *net_dev,
+				struct ethtool_pauseparam *pause)
+{
+	struct efx_nic *efx = netdev_priv(net_dev);
+
+	pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
+	pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
+	pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
+}
+
+/**
+ * efx_fill_test - fill in an individual self-test entry
+ * @test_index:		Index of the test
+ * @strings:		Ethtool strings, or %NULL
+ * @data:		Ethtool test results, or %NULL
+ * @test:		Pointer to test result (used only if data != %NULL)
+ * @unit_format:	Unit name format (e.g. "chan\%d")
+ * @unit_id:		Unit id (e.g. 0 for "chan0")
+ * @test_format:	Test name format (e.g. "loopback.\%s.tx.sent")
+ * @test_id:		Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
+ *
+ * Fill in an individual self-test entry.
+ */
+void efx_fill_test(unsigned int test_index, u8 *strings, u64 *data,
+		   int *test, const char *unit_format, int unit_id,
+		   const char *test_format, const char *test_id)
+{
+	char unit_str[ETH_GSTRING_LEN], test_str[ETH_GSTRING_LEN];
+
+	/* Fill data value, if applicable */
+	if (data)
+		data[test_index] = *test;
+
+	/* Fill string, if applicable */
+	if (strings) {
+		if (strchr(unit_format, '%'))
+			snprintf(unit_str, sizeof(unit_str),
+				 unit_format, unit_id);
+		else
+			strcpy(unit_str, unit_format);
+		snprintf(test_str, sizeof(test_str), test_format, test_id);
+		snprintf(strings + test_index * ETH_GSTRING_LEN,
+			 ETH_GSTRING_LEN,
+			 "%-6s %-24s", unit_str, test_str);
+	}
+}
+
+#define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
+#define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
+#define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
+#define EFX_LOOPBACK_NAME(_mode, _counter)			\
+	"loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
+
+/**
+ * efx_fill_loopback_test - fill in a block of loopback self-test entries
+ * @efx:		Efx NIC
+ * @lb_tests:		Efx loopback self-test results structure
+ * @mode:		Loopback test mode
+ * @test_index:		Starting index of the test
+ * @strings:		Ethtool strings, or %NULL
+ * @data:		Ethtool test results, or %NULL
+ *
+ * Fill in a block of loopback self-test entries.  Return new test
+ * index.
+ */
+int efx_fill_loopback_test(struct efx_nic *efx,
+			   struct efx_loopback_self_tests *lb_tests,
+			   enum efx_loopback_mode mode,
+			   unsigned int test_index, u8 *strings, u64 *data)
+{
+	struct efx_channel *channel =
+		efx_get_channel(efx, efx->tx_channel_offset);
+	struct efx_tx_queue *tx_queue;
+
+	efx_for_each_channel_tx_queue(tx_queue, channel) {
+		efx_fill_test(test_index++, strings, data,
+			      &lb_tests->tx_sent[tx_queue->queue],
+			      EFX_TX_QUEUE_NAME(tx_queue),
+			      EFX_LOOPBACK_NAME(mode, "tx_sent"));
+		efx_fill_test(test_index++, strings, data,
+			      &lb_tests->tx_done[tx_queue->queue],
+			      EFX_TX_QUEUE_NAME(tx_queue),
+			      EFX_LOOPBACK_NAME(mode, "tx_done"));
+	}
+	efx_fill_test(test_index++, strings, data,
+		      &lb_tests->rx_good,
+		      "rx", 0,
+		      EFX_LOOPBACK_NAME(mode, "rx_good"));
+	efx_fill_test(test_index++, strings, data,
+		      &lb_tests->rx_bad,
+		      "rx", 0,
+		      EFX_LOOPBACK_NAME(mode, "rx_bad"));
+
+	return test_index;
+}
+
+/**
+ * efx_ethtool_fill_self_tests - get self-test details
+ * @efx:		Efx NIC
+ * @tests:		Efx self-test results structure, or %NULL
+ * @strings:		Ethtool strings, or %NULL
+ * @data:		Ethtool test results, or %NULL
+ *
+ * Get self-test number of strings, strings, and/or test results.
+ * Return number of strings (== number of test results).
+ *
+ * The reason for merging these three functions is to make sure that
+ * they can never be inconsistent.
+ */
+int efx_ethtool_fill_self_tests(struct efx_nic *efx,
+				struct efx_self_tests *tests,
+				u8 *strings, u64 *data)
+{
+	struct efx_channel *channel;
+	unsigned int n = 0, i;
+	enum efx_loopback_mode mode;
+
+	efx_fill_test(n++, strings, data, &tests->phy_alive,
+		      "phy", 0, "alive", NULL);
+	efx_fill_test(n++, strings, data, &tests->nvram,
+		      "core", 0, "nvram", NULL);
+	efx_fill_test(n++, strings, data, &tests->interrupt,
+		      "core", 0, "interrupt", NULL);
+
+	/* Event queues */
+	efx_for_each_channel(channel, efx) {
+		efx_fill_test(n++, strings, data,
+			      &tests->eventq_dma[channel->channel],
+			      EFX_CHANNEL_NAME(channel),
+			      "eventq.dma", NULL);
+		efx_fill_test(n++, strings, data,
+			      &tests->eventq_int[channel->channel],
+			      EFX_CHANNEL_NAME(channel),
+			      "eventq.int", NULL);
+	}
+
+	efx_fill_test(n++, strings, data, &tests->memory,
+		      "core", 0, "memory", NULL);
+	efx_fill_test(n++, strings, data, &tests->registers,
+		      "core", 0, "registers", NULL);
+
+	if (efx->phy_op->run_tests != NULL) {
+		EFX_WARN_ON_PARANOID(efx->phy_op->test_name == NULL);
+
+		for (i = 0; true; ++i) {
+			const char *name;
+
+			EFX_WARN_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
+			name = efx->phy_op->test_name(efx, i);
+			if (name == NULL)
+				break;
+
+			efx_fill_test(n++, strings, data, &tests->phy_ext[i],
+				      "phy", 0, name, NULL);
+		}
+	}
+
+	/* Loopback tests */
+	for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
+		if (!(efx->loopback_modes & (1 << mode)))
+			continue;
+		n = efx_fill_loopback_test(efx,
+					   &tests->loopback[mode], mode, n,
+					   strings, data);
+	}
+
+	return n;
+}
+
+size_t efx_describe_per_queue_stats(struct efx_nic *efx, u8 *strings)
+{
+	size_t n_stats = 0;
+	struct efx_channel *channel;
+
+	efx_for_each_channel(channel, efx) {
+		if (efx_channel_has_tx_queues(channel)) {
+			n_stats++;
+			if (strings != NULL) {
+				snprintf(strings, ETH_GSTRING_LEN,
+					 "tx-%u.tx_packets",
+					 channel->tx_queue[0].queue /
+					 EFX_TXQ_TYPES);
+
+				strings += ETH_GSTRING_LEN;
+			}
+		}
+	}
+	efx_for_each_channel(channel, efx) {
+		if (efx_channel_has_rx_queue(channel)) {
+			n_stats++;
+			if (strings != NULL) {
+				snprintf(strings, ETH_GSTRING_LEN,
+					 "rx-%d.rx_packets", channel->channel);
+				strings += ETH_GSTRING_LEN;
+			}
+		}
+	}
+	if (efx->xdp_tx_queue_count && efx->xdp_tx_queues) {
+		unsigned short xdp;
+
+		for (xdp = 0; xdp < efx->xdp_tx_queue_count; xdp++) {
+			n_stats++;
+			if (strings) {
+				snprintf(strings, ETH_GSTRING_LEN,
+					 "tx-xdp-cpu-%hu.tx_packets", xdp);
+				strings += ETH_GSTRING_LEN;
+			}
+		}
+	}
+
+	return n_stats;
+}
+
+int efx_ethtool_get_sset_count(struct net_device *net_dev, int string_set)
+{
+	struct efx_nic *efx = netdev_priv(net_dev);
+
+	switch (string_set) {
+	case ETH_SS_STATS:
+		return efx->type->describe_stats(efx, NULL) +
+		       EFX_ETHTOOL_SW_STAT_COUNT +
+		       efx_describe_per_queue_stats(efx, NULL) +
+		       efx_ptp_describe_stats(efx, NULL);
+	case ETH_SS_TEST:
+		return efx_ethtool_fill_self_tests(efx, NULL, NULL, NULL);
+	default:
+		return -EINVAL;
+	}
+}
+
+void efx_ethtool_get_strings(struct net_device *net_dev,
+			     u32 string_set, u8 *strings)
+{
+	struct efx_nic *efx = netdev_priv(net_dev);
+	int i;
+
+	switch (string_set) {
+	case ETH_SS_STATS:
+		strings += (efx->type->describe_stats(efx, strings) *
+			    ETH_GSTRING_LEN);
+		for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++)
+			strlcpy(strings + i * ETH_GSTRING_LEN,
+				efx_sw_stat_desc[i].name, ETH_GSTRING_LEN);
+		strings += EFX_ETHTOOL_SW_STAT_COUNT * ETH_GSTRING_LEN;
+		strings += (efx_describe_per_queue_stats(efx, strings) *
+			    ETH_GSTRING_LEN);
+		efx_ptp_describe_stats(efx, strings);
+		break;
+	case ETH_SS_TEST:
+		efx_ethtool_fill_self_tests(efx, NULL, strings, NULL);
+		break;
+	default:
+		/* No other string sets */
+		break;
+	}
+}
+
+void efx_ethtool_get_stats(struct net_device *net_dev,
+			   struct ethtool_stats *stats,
+			   u64 *data)
+{
+	struct efx_nic *efx = netdev_priv(net_dev);
+	const struct efx_sw_stat_desc *stat;
+	struct efx_channel *channel;
+	struct efx_tx_queue *tx_queue;
+	struct efx_rx_queue *rx_queue;
+	int i;
+
+	spin_lock_bh(&efx->stats_lock);
+
+	/* Get NIC statistics */
+	data += efx->type->update_stats(efx, data, NULL);
+
+	/* Get software statistics */
+	for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++) {
+		stat = &efx_sw_stat_desc[i];
+		switch (stat->source) {
+		case EFX_ETHTOOL_STAT_SOURCE_nic:
+			data[i] = stat->get_stat((void *)efx + stat->offset);
+			break;
+		case EFX_ETHTOOL_STAT_SOURCE_channel:
+			data[i] = 0;
+			efx_for_each_channel(channel, efx)
+				data[i] += stat->get_stat((void *)channel +
+							  stat->offset);
+			break;
+		case EFX_ETHTOOL_STAT_SOURCE_tx_queue:
+			data[i] = 0;
+			efx_for_each_channel(channel, efx) {
+				efx_for_each_channel_tx_queue(tx_queue, channel)
+					data[i] +=
+						stat->get_stat((void *)tx_queue
+							       + stat->offset);
+			}
+			break;
+		}
+	}
+	data += EFX_ETHTOOL_SW_STAT_COUNT;
+
+	spin_unlock_bh(&efx->stats_lock);
+
+	efx_for_each_channel(channel, efx) {
+		if (efx_channel_has_tx_queues(channel)) {
+			*data = 0;
+			efx_for_each_channel_tx_queue(tx_queue, channel) {
+				*data += tx_queue->tx_packets;
+			}
+			data++;
+		}
+	}
+	efx_for_each_channel(channel, efx) {
+		if (efx_channel_has_rx_queue(channel)) {
+			*data = 0;
+			efx_for_each_channel_rx_queue(rx_queue, channel) {
+				*data += rx_queue->rx_packets;
+			}
+			data++;
+		}
+	}
+	if (efx->xdp_tx_queue_count && efx->xdp_tx_queues) {
+		int xdp;
+
+		for (xdp = 0; xdp < efx->xdp_tx_queue_count; xdp++) {
+			data[0] = efx->xdp_tx_queues[xdp]->tx_packets;
+			data++;
+		}
+	}
+
+	efx_ptp_update_stats(efx, data);
+}

drivers/net/ethernet/sfc/ethtool_common.h

···
+/* SPDX-License-Identifier: GPL-2.0-only */
+/****************************************************************************
+ * Driver for Solarflare network controllers and boards
+ * Copyright 2019 Solarflare Communications Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation, incorporated herein by reference.
+ */
+
+#ifndef EFX_ETHTOOL_COMMON_H
+#define EFX_ETHTOOL_COMMON_H
+
+void efx_ethtool_get_drvinfo(struct net_device *net_dev,
+			     struct ethtool_drvinfo *info);
+u32 efx_ethtool_get_msglevel(struct net_device *net_dev);
+void efx_ethtool_set_msglevel(struct net_device *net_dev, u32 msg_enable);
+void efx_ethtool_get_pauseparam(struct net_device *net_dev,
+				struct ethtool_pauseparam *pause);
+int efx_ethtool_fill_self_tests(struct efx_nic *efx,
+				struct efx_self_tests *tests,
+				u8 *strings, u64 *data);
+int efx_ethtool_get_sset_count(struct net_device *net_dev, int string_set);
+void efx_ethtool_get_strings(struct net_device *net_dev, u32 string_set,
+			     u8 *strings);
+void efx_ethtool_get_stats(struct net_device *net_dev,
+			   struct ethtool_stats *stats __attribute__ ((unused)),
+			   u64 *data);
+
+#endif