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/* 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_ */
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