1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 #ifndef _LINUX_NET_TIMESTAMPING_H_ 4 #define _LINUX_NET_TIMESTAMPING_H_ 5 6 #include <uapi/linux/net_tstamp.h> 7 8 enum hwtstamp_source { 9 HWTSTAMP_SOURCE_NETDEV, 10 HWTSTAMP_SOURCE_PHYLIB, 11 }; 12 13 /** 14 * struct kernel_hwtstamp_config - Kernel copy of struct hwtstamp_config 15 * 16 * @flags: see struct hwtstamp_config 17 * @tx_type: see struct hwtstamp_config 18 * @rx_filter: see struct hwtstamp_config 19 * @ifr: pointer to ifreq structure from the original ioctl request, to pass to 20 * a legacy implementation of a lower driver 21 * @copied_to_user: request was passed to a legacy implementation which already 22 * copied the ioctl request back to user space 23 * @source: indication whether timestamps should come from the netdev or from 24 * an attached phylib PHY 25 * 26 * Prefer using this structure for in-kernel processing of hardware 27 * timestamping configuration, over the inextensible struct hwtstamp_config 28 * exposed to the %SIOCGHWTSTAMP and %SIOCSHWTSTAMP ioctl UAPI. 29 */ 30 struct kernel_hwtstamp_config { 31 int flags; 32 int tx_type; 33 int rx_filter; 34 struct ifreq *ifr; 35 bool copied_to_user; 36 enum hwtstamp_source source; 37 }; 38 39 static inline void hwtstamp_config_to_kernel(struct kernel_hwtstamp_config *kernel_cfg, 40 const struct hwtstamp_config *cfg) 41 { 42 kernel_cfg->flags = cfg->flags; 43 kernel_cfg->tx_type = cfg->tx_type; 44 kernel_cfg->rx_filter = cfg->rx_filter; 45 } 46 47 static inline void hwtstamp_config_from_kernel(struct hwtstamp_config *cfg, 48 const struct kernel_hwtstamp_config *kernel_cfg) 49 { 50 cfg->flags = kernel_cfg->flags; 51 cfg->tx_type = kernel_cfg->tx_type; 52 cfg->rx_filter = kernel_cfg->rx_filter; 53 } 54 55 static inline bool kernel_hwtstamp_config_changed(const struct kernel_hwtstamp_config *a, 56 const struct kernel_hwtstamp_config *b) 57 { 58 return a->flags != b->flags || 59 a->tx_type != b->tx_type || 60 a->rx_filter != b->rx_filter; 61 } 62 63 #endif /* _LINUX_NET_TIMESTAMPING_H_ */ 64