1 files changed, 96 insertions, 0 deletions
diff --git a/include/linux/net_tstamp.h b/include/linux/net_tstamp.h
new file mode 100644
index 000000000000..f4936d9c2b3c
--- /dev/null
+++ b/include/linux/net_tstamp.h
@@ -0,0 +1,96 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _LINUX_NET_TIMESTAMPING_H_
+#define _LINUX_NET_TIMESTAMPING_H_
+
+#include <uapi/linux/net_tstamp.h>
+#include <uapi/linux/ethtool_netlink_generated.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)
+
+/**
+ * struct hwtstamp_provider_desc - hwtstamp provider description
+ *
+ * @index: index of the hwtstamp provider.
+ * @qualifier: hwtstamp provider qualifier.
+ */
+struct hwtstamp_provider_desc {
+	int index;
+	enum hwtstamp_provider_qualifier qualifier;
+};
+
+/**
+ * struct hwtstamp_provider - hwtstamp provider object
+ *
+ * @rcu_head: RCU callback used to free the struct.
+ * @source: source of the hwtstamp provider.
+ * @phydev: pointer of the phydev source in case a PTP coming from phylib
+ * @desc: hwtstamp provider description.
+ */
+
+struct hwtstamp_provider {
+	struct rcu_head rcu_head;
+	enum hwtstamp_source source;
+	struct phy_device *phydev;
+	struct hwtstamp_provider_desc desc;
+};
+
+/**
+ * struct kernel_hwtstamp_config - Kernel copy of struct hwtstamp_config
+ *
+ * @flags: see struct hwtstamp_config
+ * @tx_type: see struct hwtstamp_config
+ * @rx_filter: see struct hwtstamp_config
+ * @ifr: pointer to ifreq structure from the original ioctl request, to pass to
+ *	a legacy implementation of a lower driver
+ * @copied_to_user: request was passed to a legacy implementation which already
+ *	copied the ioctl request back to user space
+ * @source: indication whether timestamps should come from the netdev or from
+ *	an attached phylib PHY
+ * @qualifier: qualifier of the hwtstamp provider
+ *
+ * Prefer using this structure for in-kernel processing of hardware
+ * timestamping configuration, over the inextensible struct hwtstamp_config
+ * exposed to the %SIOCGHWTSTAMP and %SIOCSHWTSTAMP ioctl UAPI.
+ */
+struct kernel_hwtstamp_config {
+	int flags;
+	int tx_type;
+	int rx_filter;
+	struct ifreq *ifr;
+	bool copied_to_user;
+	enum hwtstamp_source source;
+	enum hwtstamp_provider_qualifier qualifier;
+};
+
+static inline void hwtstamp_config_to_kernel(struct kernel_hwtstamp_config *kernel_cfg,
+					     const struct hwtstamp_config *cfg)
+{
+	kernel_cfg->flags = cfg->flags;
+	kernel_cfg->tx_type = cfg->tx_type;
+	kernel_cfg->rx_filter = cfg->rx_filter;
+}
+
+static inline void hwtstamp_config_from_kernel(struct hwtstamp_config *cfg,
+					       const struct kernel_hwtstamp_config *kernel_cfg)
+{
+	cfg->flags = kernel_cfg->flags;
+	cfg->tx_type = kernel_cfg->tx_type;
+	cfg->rx_filter = kernel_cfg->rx_filter;
+}
+
+static inline bool kernel_hwtstamp_config_changed(const struct kernel_hwtstamp_config *a,
+						  const struct kernel_hwtstamp_config *b)
+{
+	return a->flags != b->flags ||
+	       a->tx_type != b->tx_type ||
+	       a->rx_filter != b->rx_filter;
+}
+
+#endif /* _LINUX_NET_TIMESTAMPING_H_ */