64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_NET_TIMESTAMPING_H_
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#define _LINUX_NET_TIMESTAMPING_H_
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#include <uapi/linux/net_tstamp.h>
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enum hwtstamp_source {
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HWTSTAMP_SOURCE_NETDEV,
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HWTSTAMP_SOURCE_PHYLIB,
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};
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/**
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* struct kernel_hwtstamp_config - Kernel copy of struct hwtstamp_config
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*
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* @flags: see struct hwtstamp_config
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* @tx_type: see struct hwtstamp_config
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* @rx_filter: see struct hwtstamp_config
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* @ifr: pointer to ifreq structure from the original ioctl request, to pass to
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* a legacy implementation of a lower driver
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* @copied_to_user: request was passed to a legacy implementation which already
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* copied the ioctl request back to user space
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* @source: indication whether timestamps should come from the netdev or from
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* an attached phylib PHY
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*
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* Prefer using this structure for in-kernel processing of hardware
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* timestamping configuration, over the inextensible struct hwtstamp_config
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* exposed to the %SIOCGHWTSTAMP and %SIOCSHWTSTAMP ioctl UAPI.
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*/
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struct kernel_hwtstamp_config {
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int flags;
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int tx_type;
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int rx_filter;
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struct ifreq *ifr;
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bool copied_to_user;
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enum hwtstamp_source source;
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};
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static inline void hwtstamp_config_to_kernel(struct kernel_hwtstamp_config *kernel_cfg,
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const struct hwtstamp_config *cfg)
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{
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kernel_cfg->flags = cfg->flags;
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kernel_cfg->tx_type = cfg->tx_type;
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kernel_cfg->rx_filter = cfg->rx_filter;
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}
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static inline void hwtstamp_config_from_kernel(struct hwtstamp_config *cfg,
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const struct kernel_hwtstamp_config *kernel_cfg)
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{
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cfg->flags = kernel_cfg->flags;
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cfg->tx_type = kernel_cfg->tx_type;
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cfg->rx_filter = kernel_cfg->rx_filter;
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}
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static inline bool kernel_hwtstamp_config_changed(const struct kernel_hwtstamp_config *a,
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const struct kernel_hwtstamp_config *b)
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{
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return a->flags != b->flags ||
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a->tx_type != b->tx_type ||
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a->rx_filter != b->rx_filter;
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}
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#endif /* _LINUX_NET_TIMESTAMPING_H_ */
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