Merge branch 'net-make-timestamping-selectable'

First part of "net: Make timestamping selectable" from Kory Maincent.
Change the driver-facing type already to lower rebasing pain.

Link: https://lore.kernel.org/20240709-feature_ptp_netnext-v17-0-b5317f50df2a@bootlin.com/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

5 files changed, 53 insertions, 6 deletions

diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
index 1b92aed49363..23492213ea35 100644
--- a/include/linux/can/dev.h
+++ b/include/linux/can/dev.h
@@ -186,7 +186,7 @@ void close_candev(struct net_device *dev);
 int can_change_mtu(struct net_device *dev, int new_mtu);
 int can_eth_ioctl_hwts(struct net_device *netdev, struct ifreq *ifr, int cmd);
 int can_ethtool_op_get_ts_info_hwts(struct net_device *dev,
-				    struct ethtool_ts_info *info);
+				    struct kernel_ethtool_ts_info *info);
 
 int register_candev(struct net_device *dev);
 void unregister_candev(struct net_device *dev);
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index a1ee76936f53..303fda54ef17 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -18,6 +18,7 @@
 #include <linux/if_ether.h>
 #include <linux/netlink.h>
 #include <uapi/linux/ethtool.h>
+#include <uapi/linux/net_tstamp.h>
 
 struct compat_ethtool_rx_flow_spec {
 	u32		flow_type;
@@ -706,6 +707,22 @@ struct ethtool_rxfh_param {
 };
 
 /**
+ * struct kernel_ethtool_ts_info - kernel copy of struct ethtool_ts_info
+ * @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
+ * @tx_types: bit mask of the supported hwtstamp_tx_types enumeration values
+ * @rx_filters: bit mask of the supported hwtstamp_rx_filters enumeration values
+ */
+struct kernel_ethtool_ts_info {
+	u32 cmd;
+	u32 so_timestamping;
+	int phc_index;
+	enum hwtstamp_tx_types tx_types;
+	enum hwtstamp_rx_filters rx_filters;
+};
+
+/**
  * struct ethtool_ops - optional netdev operations
  * @cap_link_lanes_supported: indicates if the driver supports lanes
  *	parameter.
@@ -1018,7 +1035,7 @@ struct ethtool_ops {
 	int	(*get_dump_data)(struct net_device *,
 				 struct ethtool_dump *, void *);
 	int	(*set_dump)(struct net_device *, struct ethtool_dump *);
-	int	(*get_ts_info)(struct net_device *, struct ethtool_ts_info *);
+	int	(*get_ts_info)(struct net_device *, struct kernel_ethtool_ts_info *);
 	void	(*get_ts_stats)(struct net_device *dev,
 				struct ethtool_ts_stats *ts_stats);
 	int     (*get_module_info)(struct net_device *,
@@ -1179,7 +1196,8 @@ int ethtool_get_phc_vclocks(struct net_device *dev, int **vclock_index);
 
 /* Some generic methods drivers may use in their ethtool_ops */
 u32 ethtool_op_get_link(struct net_device *dev);
-int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *eti);
+int ethtool_op_get_ts_info(struct net_device *dev,
+			   struct kernel_ethtool_ts_info *eti);
 
 /**
  * ethtool_mm_frag_size_add_to_min - Translate (standard) additional fragment
@@ -1228,7 +1246,8 @@ static inline int ethtool_mm_frag_size_min_to_add(u32 val_min, u32 *val_add,
  * @info: buffer to hold the result
  * Returns zero on success, non-zero otherwise.
  */
-int ethtool_get_ts_info_by_layer(struct net_device *dev, struct ethtool_ts_info *info);
+int ethtool_get_ts_info_by_layer(struct net_device *dev,
+				 struct kernel_ethtool_ts_info *info);
 
 /**
  * ethtool_sprintf - Write formatted string to ethtool string data
diff --git a/include/linux/mii_timestamper.h b/include/linux/mii_timestamper.h
index 26b04f73f214..995db62570f9 100644
--- a/include/linux/mii_timestamper.h
+++ b/include/linux/mii_timestamper.h
@@ -59,7 +59,7 @@ struct mii_timestamper {
 			   struct phy_device *phydev);
 
 	int  (*ts_info)(struct mii_timestamper *mii_ts,
-			struct ethtool_ts_info *ts_info);
+			struct kernel_ethtool_ts_info *ts_info);
 
 	struct device *device;
 };
diff --git a/include/linux/net_tstamp.h b/include/linux/net_tstamp.h
index eb01c37e71e0..662074b08c94 100644
--- a/include/linux/net_tstamp.h
+++ b/include/linux/net_tstamp.h
@@ -5,7 +5,16 @@
 
 #include <uapi/linux/net_tstamp.h>
 
+#define SOF_TIMESTAMPING_SOFTWARE_MASK	(SOF_TIMESTAMPING_RX_SOFTWARE | \
+					 SOF_TIMESTAMPING_TX_SOFTWARE | \
+					 SOF_TIMESTAMPING_SOFTWARE)
+
+#define SOF_TIMESTAMPING_HARDWARE_MASK	(SOF_TIMESTAMPING_RX_HARDWARE | \
+					 SOF_TIMESTAMPING_TX_HARDWARE | \
+					 SOF_TIMESTAMPING_RAW_HARDWARE)
+
 enum hwtstamp_source {
+	HWTSTAMP_SOURCE_UNSPEC,
 	HWTSTAMP_SOURCE_NETDEV,
 	HWTSTAMP_SOURCE_PHYLIB,
 };
diff --git a/include/linux/phy.h b/include/linux/phy.h
index bd68f9d8e74f..04ae5c811cfb 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -616,6 +616,8 @@ struct macsec_ops;
  *                 handling shall be postponed until PHY has resumed
  * @irq_rerun: Flag indicating interrupts occurred while PHY was suspended,
  *             requiring a rerun of the interrupt handler after resume
+ * @default_timestamp: Flag indicating whether we are using the phy
+ *		       timestamp as the default one
  * @interface: enum phy_interface_t value
  * @possible_interfaces: bitmap if interface modes that the attached PHY
  *			 will switch between depending on media speed.
@@ -681,6 +683,8 @@ struct phy_device {
 	unsigned irq_suspended:1;
 	unsigned irq_rerun:1;
 
+	unsigned default_timestamp:1;
+
 	int rate_matching;
 
 	enum phy_state state;
@@ -1614,7 +1618,7 @@ static inline bool phy_rxtstamp(struct phy_device *phydev, struct sk_buff *skb,
 }
 
 static inline int phy_ts_info(struct phy_device *phydev,
-			      struct ethtool_ts_info *tsinfo)
+			      struct kernel_ethtool_ts_info *tsinfo)
 {
 	return phydev->mii_ts->ts_info(phydev->mii_ts, tsinfo);
 }
@@ -1626,6 +1630,21 @@ static inline void phy_txtstamp(struct phy_device *phydev, struct sk_buff *skb,
 }
 
 /**
+ * phy_is_default_hwtstamp - Is the PHY hwtstamp the default timestamp
+ * @phydev: Pointer to phy_device
+ *
+ * This is used to get default timestamping device taking into account
+ * the new API choice, which is selecting the timestamping from MAC by
+ * default if the phydev does not have default_timestamp flag enabled.
+ *
+ * Return: True if phy is the default hw timestamp, false otherwise.
+ */
+static inline bool phy_is_default_hwtstamp(struct phy_device *phydev)
+{
+	return phy_has_hwtstamp(phydev) && phydev->default_timestamp;
+}
+
+/**
  * phy_is_internal - Convenience function for testing if a PHY is internal
  * @phydev: the phy_device struct
  */