diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst
index bfe2eda8580d..20429015de03 100644
--- a/Documentation/networking/ethtool-netlink.rst
+++ b/Documentation/networking/ethtool-netlink.rst
@@ -1235,9 +1235,10 @@ Gets timestamping information like ``ETHTOOL_GET_TS_INFO`` ioctl request.
 
 Request contents:
 
-  =====================================  ======  ==========================
-  ``ETHTOOL_A_TSINFO_HEADER``            nested  request header
-  =====================================  ======  ==========================
+  ========================================  ======  ============================
+  ``ETHTOOL_A_TSINFO_HEADER``               nested  request header
+  ``ETHTOOL_A_TSINFO_HWTSTAMP_PROVIDER``    nested  PTP hw clock provider
+  ========================================  ======  ============================
 
 Kernel response contents:
 
diff --git a/drivers/ptp/ptp_clock_consumer.c b/drivers/ptp/ptp_clock_consumer.c
index f521b07da231..0eec0e910d1a 100644
--- a/drivers/ptp/ptp_clock_consumer.c
+++ b/drivers/ptp/ptp_clock_consumer.c
@@ -114,3 +114,69 @@ int ptp_clock_index(struct ptp_clock *ptp)
 	return ptp->index;
 }
 EXPORT_SYMBOL(ptp_clock_index);
+
+struct ptp_clock *netdev_ptp_clock_find(struct net_device *dev,
+					unsigned long *indexp)
+{
+	struct ptp_clock *ptp;
+	unsigned long index;
+
+	xa_for_each_start(&ptp_clocks_map, index, ptp, *indexp) {
+		if ((ptp->phc_source == HWTSTAMP_SOURCE_NETDEV &&
+		     ptp->netdev == dev) ||
+		    (ptp->phc_source == HWTSTAMP_SOURCE_PHYLIB &&
+		     ptp->phydev->attached_dev == dev)) {
+			*indexp = index;
+			return ptp;
+		}
+	}
+
+	return NULL;
+};
+
+bool
+netdev_support_hwtstamp_qualifier(struct net_device *dev,
+				  enum hwtstamp_provider_qualifier qualifier)
+{
+	const struct ethtool_ops *ops = dev->ethtool_ops;
+
+	if (!ops)
+		return false;
+
+	/* Return true with precise qualifier and with NIC without
+	 * qualifier description to not break the old behavior.
+	 */
+	if (!ops->supported_hwtstamp_qualifiers &&
+	    qualifier == HWTSTAMP_PROVIDER_QUALIFIER_PRECISE)
+		return true;
+
+	if (ops->supported_hwtstamp_qualifiers & BIT(qualifier))
+		return true;
+
+	return false;
+}
+
+bool netdev_support_hwtstamp(struct net_device *dev,
+			     struct hwtstamp_provider *hwtstamp)
+{
+	struct ptp_clock *tmp_ptp;
+	unsigned long index = 0;
+
+	netdev_for_each_ptp_clock_start(dev, index, tmp_ptp, 0) {
+		if (tmp_ptp != hwtstamp->ptp)
+			continue;
+
+		if (ptp_clock_from_phylib(hwtstamp->ptp) &&
+		    hwtstamp->qualifier == HWTSTAMP_PROVIDER_QUALIFIER_PRECISE)
+			return true;
+
+		if (ptp_clock_from_netdev(hwtstamp->ptp) &&
+		    netdev_support_hwtstamp_qualifier(dev,
+						      hwtstamp->qualifier))
+			return true;
+
+		return false;
+	}
+
+	return false;
+}
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index f9cdd567a4b3..30996f004324 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -719,6 +719,7 @@ struct ethtool_rxfh_param {
  * @cmd: command number = %ETHTOOL_GET_TS_INFO
  * @so_timestamping: bit mask of the sum of the supported SO_TIMESTAMPING flags
  * @phc_index: device index of the associated PHC, or -1 if there is none
+ * @phc_qualifier: qualifier of the associated PHC
  * @tx_types: bit mask of the supported hwtstamp_tx_types enumeration values
  * @rx_filters: bit mask of the supported hwtstamp_rx_filters enumeration values
  */
@@ -726,6 +727,7 @@ struct kernel_ethtool_ts_info {
 	u32 cmd;
 	u32 so_timestamping;
 	int phc_index;
+	enum hwtstamp_provider_qualifier phc_qualifier;
 	enum hwtstamp_tx_types tx_types;
 	enum hwtstamp_rx_filters rx_filters;
 };
@@ -746,6 +748,7 @@ struct kernel_ethtool_ts_info {
  *	argument to @create_rxfh_context and friends.
  * @supported_coalesce_params: supported types of interrupt coalescing.
  * @supported_ring_params: supported ring params.
+ * @supported_hwtstamp_qualifiers: bitfield of supported hwtstamp qualifier.
  * @get_drvinfo: Report driver/device information. Modern drivers no
  *	longer have to implement this callback. Most fields are
  *	correctly filled in by the core using system information, or
@@ -959,6 +962,7 @@ struct ethtool_ops {
 	u32	rxfh_max_context_id;
 	u32	supported_coalesce_params;
 	u32	supported_ring_params;
+	u32	supported_hwtstamp_qualifiers;
 	void	(*get_drvinfo)(struct net_device *, struct ethtool_drvinfo *);
 	int	(*get_regs_len)(struct net_device *);
 	void	(*get_regs)(struct net_device *, struct ethtool_regs *, void *);
diff --git a/include/linux/ptp_clock_kernel.h b/include/linux/ptp_clock_kernel.h
index 6d9e6cd5c832..a8babc15f5b3 100644
--- a/include/linux/ptp_clock_kernel.h
+++ b/include/linux/ptp_clock_kernel.h
@@ -450,6 +450,45 @@ void ptp_clock_put(struct device *dev, struct ptp_clock *ptp);
 
 void remove_hwtstamp_provider(struct rcu_head *rcu_head);
 
+/**
+ * netdev_ptp_clock_find() - obtain the next PTP clock in the netdev
+ *			     topology
+ *
+ * @dev:    Pointer of the net device.
+ * @indexp:  Pointer of ptp clock index start point.
+ *
+ * Return: Pointer of the PTP clock found, NULL otherwise.
+ */
+
+struct ptp_clock *netdev_ptp_clock_find(struct net_device *dev,
+					unsigned long *indexp);
+
+/**
+ * netdev_support_hwtstamp_qualifier() - Verify if the net device support the
+ *					 hwtstamp qualifier
+ *
+ * @dev:        Pointer of the net device.
+ * @qualifier:  hwtstamp provider qualifier.
+ *
+ * Return: True if the net device support the htstamp qualifier false otherwise.
+ */
+
+bool netdev_support_hwtstamp_qualifier(struct net_device *dev,
+				       enum hwtstamp_provider_qualifier qualifier);
+
+/**
+ * netdev_support_hwtstamp() - Verify if the hwtstamp belong to the netdev
+ *			       topology
+ *
+ * @dev:       Pointer of the net device
+ * @hwtstamp:  Pointer of the hwtstamp provider
+ *
+ * Return: True if the hwtstamp belong to the netdev topology false otherwise.
+ */
+
+bool netdev_support_hwtstamp(struct net_device *dev,
+			     struct hwtstamp_provider *hwtstamp);
+
 /**
  * ptp_find_pin() - obtain the pin index of a given auxiliary function
  *
@@ -538,6 +577,16 @@ static inline void ptp_clock_put(struct device *dev, struct ptp_clock *ptp)
 static inline struct ptp_clock *ptp_clock_get_by_index(struct device *dev,
 						       int index)
 { return NULL; }
+static inline struct ptp_clock *netdev_ptp_clock_find(struct net_device *dev,
+						      unsigned long *indexp)
+{ return NULL; }
+static inline bool
+netdev_support_hwtstamp_qualifier(struct net_device *dev,
+				  enum hwtstamp_provider_qualifier qualifier)
+{ return false; }
+static inline bool netdev_support_hwtstamp(struct net_device *dev,
+					   struct hwtstamp_provider *hwtst)
+{ return false; }
 static inline void remove_hwtstamp_provider(struct rcu_head *rcu_head)
 { return; }
 static inline int ptp_find_pin(struct ptp_clock *ptp,
@@ -554,6 +603,10 @@ static inline void ptp_cancel_worker_sync(struct ptp_clock *ptp)
 { }
 #endif
 
+#define netdev_for_each_ptp_clock_start(dev, index, entry, start) \
+	for (index = start, entry = netdev_ptp_clock_find(dev, &index); \
+	     entry; index++, entry = netdev_ptp_clock_find(dev, &index))
+
 #if IS_BUILTIN(CONFIG_PTP_1588_CLOCK)
 /*
  * These are called by the network core, and don't work if PTP is in
diff --git a/include/uapi/linux/ethtool_netlink.h b/include/uapi/linux/ethtool_netlink.h
index 840dabdc9d88..b72f53dcca56 100644
--- a/include/uapi/linux/ethtool_netlink.h
+++ b/include/uapi/linux/ethtool_netlink.h
@@ -492,8 +492,16 @@ enum {
 	ETHTOOL_A_EEE_MAX = (__ETHTOOL_A_EEE_CNT - 1)
 };
 
-/* TSINFO */
+enum {
+	ETHTOOL_A_TS_HWTSTAMP_PROVIDER_UNSPEC,
+	ETHTOOL_A_TS_HWTSTAMP_PROVIDER_INDEX,		/* u32 */
+	ETHTOOL_A_TS_HWTSTAMP_PROVIDER_QUALIFIER,	/* u32 */
 
+	__ETHTOOL_A_TS_HWTSTAMP_PROVIDER_CNT,
+	ETHTOOL_A_TS_HWTSTAMP_PROVIDER_MAX = (__ETHTOOL_A_TS_HWTSTAMP_PROVIDER_CNT - 1)
+};
+
+/* TSINFO */
 enum {
 	ETHTOOL_A_TSINFO_UNSPEC,
 	ETHTOOL_A_TSINFO_HEADER,			/* nest - _A_HEADER_* */
@@ -502,6 +510,7 @@ enum {
 	ETHTOOL_A_TSINFO_RX_FILTERS,			/* bitset */
 	ETHTOOL_A_TSINFO_PHC_INDEX,			/* u32 */
 	ETHTOOL_A_TSINFO_STATS,				/* nest - _A_TSINFO_STAT */
+	ETHTOOL_A_TSINFO_HWTSTAMP_PROVIDER,		/* nest - *_TS_HWTSTAMP_PROVIDER_* */
 
 	/* add new constants above here */
 	__ETHTOOL_A_TSINFO_CNT,
diff --git a/net/ethtool/common.c b/net/ethtool/common.c
index 461017a37955..532332e708fb 100644
--- a/net/ethtool/common.c
+++ b/net/ethtool/common.c
@@ -629,10 +629,42 @@ int ethtool_check_ops(const struct ethtool_ops *ops)
 	return 0;
 }
 
+int ethtool_get_ts_info_by_phc(struct net_device *dev,
+			       struct kernel_ethtool_ts_info *info,
+			       struct hwtstamp_provider *hwtstamp)
+{
+	const struct ethtool_ops *ops = dev->ethtool_ops;
+
+	memset(info, 0, sizeof(*info));
+	info->cmd = ETHTOOL_GET_TS_INFO;
+	info->phc_qualifier = hwtstamp->qualifier;
+
+	if (!netdev_support_hwtstamp(dev, hwtstamp))
+		return -ENODEV;
+
+	if (ptp_clock_from_phylib(hwtstamp->ptp) &&
+	    phy_has_tsinfo(ptp_clock_phydev(hwtstamp->ptp)))
+		return phy_ts_info(ptp_clock_phydev(hwtstamp->ptp), info);
+
+	if (ptp_clock_from_netdev(hwtstamp->ptp) && ops->get_ts_info)
+		return ops->get_ts_info(dev, info);
+
+	info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
+				SOF_TIMESTAMPING_SOFTWARE;
+	info->phc_index = -1;
+
+	return 0;
+}
+
 int __ethtool_get_ts_info(struct net_device *dev, struct kernel_ethtool_ts_info *info)
 {
 	const struct ethtool_ops *ops = dev->ethtool_ops;
 	struct phy_device *phydev = dev->phydev;
+	struct hwtstamp_provider *hwtstamp;
+
+	hwtstamp = rtnl_dereference(dev->hwtstamp);
+	if (hwtstamp)
+		return ethtool_get_ts_info_by_phc(dev, info, hwtstamp);
 
 	memset(info, 0, sizeof(*info));
 	info->cmd = ETHTOOL_GET_TS_INFO;
diff --git a/net/ethtool/common.h b/net/ethtool/common.h
index b9daeecbd84d..83bf82a4e75a 100644
--- a/net/ethtool/common.h
+++ b/net/ethtool/common.h
@@ -45,6 +45,9 @@ bool convert_legacy_settings_to_link_ksettings(
 int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max);
 int ethtool_get_max_rxnfc_channel(struct net_device *dev, u64 *max);
 int __ethtool_get_ts_info(struct net_device *dev, struct kernel_ethtool_ts_info *info);
+int ethtool_get_ts_info_by_phc(struct net_device *dev,
+			       struct kernel_ethtool_ts_info *info,
+			       struct hwtstamp_provider *hwtst);
 
 extern const struct ethtool_phy_ops *ethtool_phy_ops;
 extern const struct ethtool_pse_ops *ethtool_pse_ops;
diff --git a/net/ethtool/netlink.c b/net/ethtool/netlink.c
index 81fe2e5b95f6..1c32eea1a751 100644
--- a/net/ethtool/netlink.c
+++ b/net/ethtool/netlink.c
@@ -1021,9 +1021,9 @@ static const struct genl_ops ethtool_genl_ops[] = {
 	{
 		.cmd	= ETHTOOL_MSG_TSINFO_GET,
 		.doit	= ethnl_default_doit,
-		.start	= ethnl_default_start,
-		.dumpit	= ethnl_default_dumpit,
-		.done	= ethnl_default_done,
+		.start	= ethnl_tsinfo_start,
+		.dumpit	= ethnl_tsinfo_dumpit,
+		.done	= ethnl_tsinfo_done,
 		.policy = ethnl_tsinfo_get_policy,
 		.maxattr = ARRAY_SIZE(ethnl_tsinfo_get_policy) - 1,
 	},
diff --git a/net/ethtool/netlink.h b/net/ethtool/netlink.h
index 46ec273a87c5..0ebe42dc1bf0 100644
--- a/net/ethtool/netlink.h
+++ b/net/ethtool/netlink.h
@@ -436,7 +436,7 @@ extern const struct nla_policy ethnl_pause_get_policy[ETHTOOL_A_PAUSE_STATS_SRC
 extern const struct nla_policy ethnl_pause_set_policy[ETHTOOL_A_PAUSE_TX + 1];
 extern const struct nla_policy ethnl_eee_get_policy[ETHTOOL_A_EEE_HEADER + 1];
 extern const struct nla_policy ethnl_eee_set_policy[ETHTOOL_A_EEE_TX_LPI_TIMER + 1];
-extern const struct nla_policy ethnl_tsinfo_get_policy[ETHTOOL_A_TSINFO_HEADER + 1];
+extern const struct nla_policy ethnl_tsinfo_get_policy[ETHTOOL_A_TSINFO_MAX + 1];
 extern const struct nla_policy ethnl_cable_test_act_policy[ETHTOOL_A_CABLE_TEST_HEADER + 1];
 extern const struct nla_policy ethnl_cable_test_tdr_act_policy[ETHTOOL_A_CABLE_TEST_TDR_CFG + 1];
 extern const struct nla_policy ethnl_tunnel_info_get_policy[ETHTOOL_A_TUNNEL_INFO_HEADER + 1];
@@ -464,6 +464,9 @@ int ethnl_tunnel_info_doit(struct sk_buff *skb, struct genl_info *info);
 int ethnl_tunnel_info_start(struct netlink_callback *cb);
 int ethnl_tunnel_info_dumpit(struct sk_buff *skb, struct netlink_callback *cb);
 int ethnl_act_module_fw_flash(struct sk_buff *skb, struct genl_info *info);
+int ethnl_tsinfo_start(struct netlink_callback *cb);
+int ethnl_tsinfo_dumpit(struct sk_buff *skb, struct netlink_callback *cb);
+int ethnl_tsinfo_done(struct netlink_callback *cb);
 
 extern const char stats_std_names[__ETHTOOL_STATS_CNT][ETH_GSTRING_LEN];
 extern const char stats_eth_phy_names[__ETHTOOL_A_STATS_ETH_PHY_CNT][ETH_GSTRING_LEN];
diff --git a/net/ethtool/ts.h b/net/ethtool/ts.h
new file mode 100644
index 000000000000..1fb7b6d9d99a
--- /dev/null
+++ b/net/ethtool/ts.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef _NET_ETHTOOL_TS_H
+#define _NET_ETHTOOL_TS_H
+
+#include "netlink.h"
+
+struct hwtst_provider {
+	int index;
+	u32 qualifier;
+};
+
+static const struct nla_policy
+ethnl_ts_hwtst_prov_policy[ETHTOOL_A_TS_HWTSTAMP_PROVIDER_MAX + 1] = {
+	[ETHTOOL_A_TS_HWTSTAMP_PROVIDER_INDEX] =
+		NLA_POLICY_MIN(NLA_S32, 0),
+	[ETHTOOL_A_TS_HWTSTAMP_PROVIDER_QUALIFIER] =
+		NLA_POLICY_MAX(NLA_U32, HWTSTAMP_PROVIDER_QUALIFIER_CNT - 1)
+};
+
+static inline int ts_parse_hwtst_provider(const struct nlattr *nest,
+					  struct hwtst_provider *hwtst,
+					  struct netlink_ext_ack *extack,
+					  bool *mod)
+{
+	struct nlattr *tb[ARRAY_SIZE(ethnl_ts_hwtst_prov_policy)];
+	int ret;
+
+	ret = nla_parse_nested(tb,
+			       ARRAY_SIZE(ethnl_ts_hwtst_prov_policy) - 1,
+			       nest,
+			       ethnl_ts_hwtst_prov_policy, extack);
+	if (ret < 0)
+		return ret;
+
+	if (NL_REQ_ATTR_CHECK(extack, nest, tb,
+			      ETHTOOL_A_TS_HWTSTAMP_PROVIDER_INDEX) ||
+	    NL_REQ_ATTR_CHECK(extack, nest, tb,
+			      ETHTOOL_A_TS_HWTSTAMP_PROVIDER_QUALIFIER))
+		return -EINVAL;
+
+	ethnl_update_u32(&hwtst->index,
+			 tb[ETHTOOL_A_TS_HWTSTAMP_PROVIDER_INDEX],
+			 mod);
+	ethnl_update_u32(&hwtst->qualifier,
+			 tb[ETHTOOL_A_TS_HWTSTAMP_PROVIDER_QUALIFIER],
+			 mod);
+
+	return 0;
+}
+
+#endif /* _NET_ETHTOOL_TS_H */
diff --git a/net/ethtool/tsinfo.c b/net/ethtool/tsinfo.c
index 03d12d6f79ca..1ff992fcaf6a 100644
--- a/net/ethtool/tsinfo.c
+++ b/net/ethtool/tsinfo.c
@@ -1,13 +1,16 @@
 // SPDX-License-Identifier: GPL-2.0-only
 
 #include <linux/net_tstamp.h>
+#include <linux/ptp_clock_kernel.h>
 
 #include "netlink.h"
 #include "common.h"
 #include "bitset.h"
+#include "ts.h"
 
 struct tsinfo_req_info {
 	struct ethnl_req_info		base;
+	struct hwtst_provider		hwtst;
 };
 
 struct tsinfo_reply_data {
@@ -16,35 +19,76 @@ struct tsinfo_reply_data {
 	struct ethtool_ts_stats		stats;
 };
 
+#define TSINFO_REQINFO(__req_base) \
+	container_of(__req_base, struct tsinfo_req_info, base)
+
 #define TSINFO_REPDATA(__reply_base) \
 	container_of(__reply_base, struct tsinfo_reply_data, base)
 
 #define ETHTOOL_TS_STAT_CNT \
 	(__ETHTOOL_A_TS_STAT_CNT - (ETHTOOL_A_TS_STAT_UNSPEC + 1))
 
-const struct nla_policy ethnl_tsinfo_get_policy[] = {
+const struct nla_policy ethnl_tsinfo_get_policy[ETHTOOL_A_TSINFO_MAX + 1] = {
 	[ETHTOOL_A_TSINFO_HEADER]		=
 		NLA_POLICY_NESTED(ethnl_header_policy_stats),
+	[ETHTOOL_A_TSINFO_HWTSTAMP_PROVIDER] =
+		NLA_POLICY_NESTED(ethnl_ts_hwtst_prov_policy),
 };
 
+static int
+tsinfo_parse_request(struct ethnl_req_info *req_base, struct nlattr **tb,
+		     struct netlink_ext_ack *extack)
+{
+	struct tsinfo_req_info *req = TSINFO_REQINFO(req_base);
+	bool mod = false;
+
+	req->hwtst.index = -1;
+
+	if (!tb[ETHTOOL_A_TSINFO_HWTSTAMP_PROVIDER])
+		return 0;
+
+	return ts_parse_hwtst_provider(tb[ETHTOOL_A_TSINFO_HWTSTAMP_PROVIDER],
+				       &req->hwtst, extack, &mod);
+}
+
 static int tsinfo_prepare_data(const struct ethnl_req_info *req_base,
 			       struct ethnl_reply_data *reply_base,
 			       const struct genl_info *info)
 {
 	struct tsinfo_reply_data *data = TSINFO_REPDATA(reply_base);
+	struct tsinfo_req_info *req = TSINFO_REQINFO(req_base);
 	struct net_device *dev = reply_base->dev;
 	int ret;
 
 	ret = ethnl_ops_begin(dev);
 	if (ret < 0)
 		return ret;
+
 	if (req_base->flags & ETHTOOL_FLAG_STATS) {
 		ethtool_stats_init((u64 *)&data->stats,
 				   sizeof(data->stats) / sizeof(u64));
 		if (dev->ethtool_ops->get_ts_stats)
 			dev->ethtool_ops->get_ts_stats(dev, &data->stats);
 	}
-	ret = __ethtool_get_ts_info(dev, &data->ts_info);
+
+	if (req->hwtst.index != -1) {
+		struct hwtstamp_provider hwtstamp;
+
+		hwtstamp.ptp = ptp_clock_get_by_index(&dev->dev, req->hwtst.index);
+		if (!hwtstamp.ptp) {
+			ret = -ENODEV;
+			goto out;
+		}
+		hwtstamp.qualifier = req->hwtst.qualifier;
+
+		ret = ethtool_get_ts_info_by_phc(dev, &data->ts_info,
+						 &hwtstamp);
+		ptp_clock_put(&dev->dev, hwtstamp.ptp);
+	} else {
+		ret = __ethtool_get_ts_info(dev, &data->ts_info);
+	}
+
+out:
 	ethnl_ops_complete(dev);
 
 	return ret;
@@ -87,8 +131,11 @@ static int tsinfo_reply_size(const struct ethnl_req_info *req_base,
 			return ret;
 		len += ret;	/* _TSINFO_RX_FILTERS */
 	}
-	if (ts_info->phc_index >= 0)
+	if (ts_info->phc_index >= 0) {
+		/* _TSINFO_HWTSTAMP_PROVIDER */
+		len += 2 * nla_total_size(sizeof(u32));
 		len += nla_total_size(sizeof(u32));	/* _TSINFO_PHC_INDEX */
+	}
 	if (req_base->flags & ETHTOOL_FLAG_STATS)
 		len += nla_total_size(0) + /* _TSINFO_STATS */
 		       nla_total_size_64bit(sizeof(u64)) * ETHTOOL_TS_STAT_CNT;
@@ -163,9 +210,29 @@ static int tsinfo_fill_reply(struct sk_buff *skb,
 		if (ret < 0)
 			return ret;
 	}
-	if (ts_info->phc_index >= 0 &&
-	    nla_put_u32(skb, ETHTOOL_A_TSINFO_PHC_INDEX, ts_info->phc_index))
-		return -EMSGSIZE;
+	if (ts_info->phc_index >= 0) {
+		struct nlattr *nest;
+
+		ret = nla_put_u32(skb, ETHTOOL_A_TSINFO_PHC_INDEX,
+				  ts_info->phc_index);
+		if (ret)
+			return -EMSGSIZE;
+
+		nest = nla_nest_start(skb, ETHTOOL_A_TSINFO_HWTSTAMP_PROVIDER);
+		if (!nest)
+			return -EMSGSIZE;
+
+		if (nla_put_u32(skb, ETHTOOL_A_TS_HWTSTAMP_PROVIDER_INDEX,
+				ts_info->phc_index) ||
+		    nla_put_u32(skb,
+				ETHTOOL_A_TS_HWTSTAMP_PROVIDER_QUALIFIER,
+				ts_info->phc_qualifier)) {
+			nla_nest_cancel(skb, nest);
+			return -EMSGSIZE;
+		}
+
+		nla_nest_end(skb, nest);
+	}
 	if (req_base->flags & ETHTOOL_FLAG_STATS &&
 	    tsinfo_put_stats(skb, &data->stats))
 		return -EMSGSIZE;
@@ -173,6 +240,165 @@ static int tsinfo_fill_reply(struct sk_buff *skb,
 	return 0;
 }
 
+struct ethnl_tsinfo_dump_ctx {
+	struct tsinfo_req_info		*req_info;
+	struct tsinfo_reply_data	*reply_data;
+	unsigned long			pos_ifindex;
+	unsigned long			pos_phcindex;
+	enum hwtstamp_provider_qualifier pos_phcqualifier;
+};
+
+static int ethnl_tsinfo_dump_one_ptp(struct sk_buff *skb, struct net_device *dev,
+				     struct netlink_callback *cb,
+				     struct ptp_clock *ptp)
+{
+	struct ethnl_tsinfo_dump_ctx *ctx = (void *)cb->ctx;
+	struct tsinfo_reply_data *reply_data;
+	struct tsinfo_req_info *req_info;
+	void *ehdr = NULL;
+	int ret = 0;
+
+	reply_data = ctx->reply_data;
+	req_info = ctx->req_info;
+	req_info->hwtst.index = ptp_clock_index(ptp);
+
+	for (; ctx->pos_phcqualifier < HWTSTAMP_PROVIDER_QUALIFIER_CNT;
+	     ctx->pos_phcqualifier++) {
+		if (!netdev_support_hwtstamp_qualifier(dev,
+						       ctx->pos_phcqualifier))
+			continue;
+
+		ehdr = ethnl_dump_put(skb, cb,
+				      ETHTOOL_MSG_TSINFO_GET_REPLY);
+		if (!ehdr)
+			return -EMSGSIZE;
+
+		memset(reply_data, 0, sizeof(*reply_data));
+		reply_data->base.dev = dev;
+		req_info->hwtst.qualifier = ctx->pos_phcqualifier;
+		ret = tsinfo_prepare_data(&req_info->base,
+					  &reply_data->base,
+					  genl_info_dump(cb));
+		if (ret < 0)
+			break;
+
+		ret = ethnl_fill_reply_header(skb, dev,
+					      ETHTOOL_A_TSINFO_HEADER);
+		if (ret < 0)
+			break;
+
+		ret = tsinfo_fill_reply(skb, &req_info->base,
+					&reply_data->base);
+		if (ret < 0)
+			break;
+	}
+
+	reply_data->base.dev = NULL;
+	if (!ret && ehdr)
+		genlmsg_end(skb, ehdr);
+	else
+		genlmsg_cancel(skb, ehdr);
+	return ret;
+}
+
+static int ethnl_tsinfo_dump_one_dev(struct sk_buff *skb, struct net_device *dev,
+				     struct netlink_callback *cb)
+{
+	struct ethnl_tsinfo_dump_ctx *ctx = (void *)cb->ctx;
+	struct ptp_clock *ptp;
+	int ret = 0;
+
+	netdev_for_each_ptp_clock_start(dev, ctx->pos_phcindex, ptp,
+					ctx->pos_phcindex) {
+		ret = ethnl_tsinfo_dump_one_ptp(skb, dev, cb, ptp);
+		if (ret < 0 && ret != -EOPNOTSUPP)
+			break;
+		ctx->pos_phcqualifier = HWTSTAMP_PROVIDER_QUALIFIER_PRECISE;
+	}
+
+	return ret;
+}
+
+int ethnl_tsinfo_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
+{
+	struct ethnl_tsinfo_dump_ctx *ctx = (void *)cb->ctx;
+	struct net *net = sock_net(skb->sk);
+	struct net_device *dev;
+	int ret = 0;
+
+	rtnl_lock();
+	if (ctx->req_info->base.dev) {
+		ret = ethnl_tsinfo_dump_one_dev(skb,
+						ctx->req_info->base.dev,
+						cb);
+	} else {
+		for_each_netdev_dump(net, dev, ctx->pos_ifindex) {
+			ret = ethnl_tsinfo_dump_one_dev(skb, dev, cb);
+			if (ret < 0 && ret != -EOPNOTSUPP)
+				break;
+			ctx->pos_phcindex = 0;
+		}
+	}
+	rtnl_unlock();
+
+	return ret;
+}
+
+int ethnl_tsinfo_start(struct netlink_callback *cb)
+{
+	const struct genl_dumpit_info *info = genl_dumpit_info(cb);
+	struct ethnl_tsinfo_dump_ctx *ctx = (void *)cb->ctx;
+	struct nlattr **tb = info->info.attrs;
+	struct tsinfo_reply_data *reply_data;
+	struct tsinfo_req_info *req_info;
+	int ret;
+
+	BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx));
+
+	req_info = kzalloc(sizeof(*req_info), GFP_KERNEL);
+	if (!req_info)
+		return -ENOMEM;
+	reply_data = kzalloc(sizeof(*reply_data), GFP_KERNEL);
+	if (!reply_data) {
+		ret = -ENOMEM;
+		goto free_req_info;
+	}
+
+	ret = ethnl_parse_header_dev_get(&req_info->base,
+					 tb[ETHTOOL_A_TSINFO_HEADER],
+					 sock_net(cb->skb->sk), cb->extack,
+					 false);
+	if (ret < 0)
+		goto free_reply_data;
+
+	ctx->req_info = req_info;
+	ctx->reply_data = reply_data;
+	ctx->pos_ifindex = 0;
+	ctx->pos_phcindex = 0;
+	ctx->pos_phcqualifier = HWTSTAMP_PROVIDER_QUALIFIER_PRECISE;
+
+	return 0;
+
+free_reply_data:
+	kfree(reply_data);
+free_req_info:
+	kfree(req_info);
+
+	return ret;
+}
+
+int ethnl_tsinfo_done(struct netlink_callback *cb)
+{
+	struct ethnl_tsinfo_dump_ctx *ctx = (void *)cb->ctx;
+	struct tsinfo_req_info *req_info = ctx->req_info;
+
+	ethnl_parse_header_dev_put(&req_info->base);
+	kfree(ctx->reply_data);
+	kfree(ctx->req_info);
+
+	return 0;
+}
+
 const struct ethnl_request_ops ethnl_tsinfo_request_ops = {
 	.request_cmd		= ETHTOOL_MSG_TSINFO_GET,
 	.reply_cmd		= ETHTOOL_MSG_TSINFO_GET_REPLY,
@@ -180,6 +406,7 @@ const struct ethnl_request_ops ethnl_tsinfo_request_ops = {
 	.req_info_size		= sizeof(struct tsinfo_req_info),
 	.reply_data_size	= sizeof(struct tsinfo_reply_data),
 
+	.parse_request		= tsinfo_parse_request,
 	.prepare_data		= tsinfo_prepare_data,
 	.reply_size		= tsinfo_reply_size,
 	.fill_reply		= tsinfo_fill_reply,
