/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_NET_TIMESTAMPING_H_ #define _LINUX_NET_TIMESTAMPING_H_ #include <uapi/linux/net_tstamp.h> enum hwtstamp_source { HWTSTAMP_SOURCE_NETDEV, HWTSTAMP_SOURCE_PHYLIB, }; /** * 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 * * 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; }; 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_ */