include/linux/net_tstamp.h

   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 #define SOF_TIMESTAMPING_SOFTWARE_MASK  (SOF_TIMESTAMPING_RX_SOFTWARE | \
   9                                          SOF_TIMESTAMPING_TX_SOFTWARE | \
  10                                          SOF_TIMESTAMPING_SOFTWARE)
  11
  12 #define SOF_TIMESTAMPING_HARDWARE_MASK  (SOF_TIMESTAMPING_RX_HARDWARE | \
  13                                          SOF_TIMESTAMPING_TX_HARDWARE | \
  14                                          SOF_TIMESTAMPING_RAW_HARDWARE)
  15
  16 enum hwtstamp_source {
  17         HWTSTAMP_SOURCE_UNSPEC,
  18         HWTSTAMP_SOURCE_NETDEV,
  19         HWTSTAMP_SOURCE_PHYLIB,
  20 };
  21
  22 /**
  23  * struct kernel_hwtstamp_config - Kernel copy of struct hwtstamp_config
  24  *
  25  * @flags: see struct hwtstamp_config
  26  * @tx_type: see struct hwtstamp_config
  27  * @rx_filter: see struct hwtstamp_config
  28  * @ifr: pointer to ifreq structure from the original ioctl request, to pass to
  29  *      a legacy implementation of a lower driver
  30  * @copied_to_user: request was passed to a legacy implementation which already
  31  *      copied the ioctl request back to user space
  32  * @source: indication whether timestamps should come from the netdev or from
  33  *      an attached phylib PHY
  34  *
  35  * Prefer using this structure for in-kernel processing of hardware
  36  * timestamping configuration, over the inextensible struct hwtstamp_config
  37  * exposed to the %SIOCGHWTSTAMP and %SIOCSHWTSTAMP ioctl UAPI.
  38  */
  39 struct kernel_hwtstamp_config {
  40         int flags;
  41         int tx_type;
  42         int rx_filter;
  43         struct ifreq *ifr;
  44         bool copied_to_user;
  45         enum hwtstamp_source source;
  46 };
  47
  48 static inline void hwtstamp_config_to_kernel(struct kernel_hwtstamp_config *kernel_cfg,
  49                                              const struct hwtstamp_config *cfg)
  50 {
  51         kernel_cfg->flags = cfg->flags;
  52         kernel_cfg->tx_type = cfg->tx_type;
  53         kernel_cfg->rx_filter = cfg->rx_filter;
  54 }
  55
  56 static inline void hwtstamp_config_from_kernel(struct hwtstamp_config *cfg,
  57                                                const struct kernel_hwtstamp_config *kernel_cfg)
  58 {
  59         cfg->flags = kernel_cfg->flags;
  60         cfg->tx_type = kernel_cfg->tx_type;
  61         cfg->rx_filter = kernel_cfg->rx_filter;
  62 }
  63
  64 static inline bool kernel_hwtstamp_config_changed(const struct kernel_hwtstamp_config *a,
  65                                                   const struct kernel_hwtstamp_config *b)
  66 {
  67         return a->flags != b->flags ||
  68                a->tx_type != b->tx_type ||
  69                a->rx_filter != b->rx_filter;
  70 }
  71
  72 #endif /* _LINUX_NET_TIMESTAMPING_H_ */