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#include <uapi/linux/ethtool_netlink_generated.h>
8
9#define SOF_TIMESTAMPING_SOFTWARE_MASK (SOF_TIMESTAMPING_RX_SOFTWARE | \
10 SOF_TIMESTAMPING_TX_SOFTWARE | \
11 SOF_TIMESTAMPING_SOFTWARE)
12
13#define SOF_TIMESTAMPING_HARDWARE_MASK (SOF_TIMESTAMPING_RX_HARDWARE | \
14 SOF_TIMESTAMPING_TX_HARDWARE | \
15 SOF_TIMESTAMPING_RAW_HARDWARE)
16
17/**
18 * struct hwtstamp_provider_desc - hwtstamp provider description
19 *
20 * @index: index of the hwtstamp provider.
21 * @qualifier: hwtstamp provider qualifier.
22 */
23struct hwtstamp_provider_desc {
24 int index;
25 enum hwtstamp_provider_qualifier qualifier;
26};
27
28/**
29 * struct hwtstamp_provider - hwtstamp provider object
30 *
31 * @rcu_head: RCU callback used to free the struct.
32 * @source: source of the hwtstamp provider.
33 * @phydev: pointer of the phydev source in case a PTP coming from phylib
34 * @desc: hwtstamp provider description.
35 */
36
37struct hwtstamp_provider {
38 struct rcu_head rcu_head;
39 enum hwtstamp_source source;
40 struct phy_device *phydev;
41 struct hwtstamp_provider_desc desc;
42};
43
44/**
45 * struct kernel_hwtstamp_config - Kernel copy of struct hwtstamp_config
46 *
47 * @flags: see struct hwtstamp_config
48 * @tx_type: see struct hwtstamp_config
49 * @rx_filter: see struct hwtstamp_config
50 * @ifr: pointer to ifreq structure from the original ioctl request, to pass to
51 * a legacy implementation of a lower driver
52 * @copied_to_user: request was passed to a legacy implementation which already
53 * copied the ioctl request back to user space
54 * @source: indication whether timestamps should come from the netdev or from
55 * an attached phylib PHY
56 * @qualifier: qualifier of the hwtstamp provider
57 *
58 * Prefer using this structure for in-kernel processing of hardware
59 * timestamping configuration, over the inextensible struct hwtstamp_config
60 * exposed to the %SIOCGHWTSTAMP and %SIOCSHWTSTAMP ioctl UAPI.
61 */
62struct kernel_hwtstamp_config {
63 int flags;
64 int tx_type;
65 int rx_filter;
66 struct ifreq *ifr;
67 bool copied_to_user;
68 enum hwtstamp_source source;
69 enum hwtstamp_provider_qualifier qualifier;
70};
71
72static inline void hwtstamp_config_to_kernel(struct kernel_hwtstamp_config *kernel_cfg,
73 const struct hwtstamp_config *cfg)
74{
75 kernel_cfg->flags = cfg->flags;
76 kernel_cfg->tx_type = cfg->tx_type;
77 kernel_cfg->rx_filter = cfg->rx_filter;
78}
79
80static inline void hwtstamp_config_from_kernel(struct hwtstamp_config *cfg,
81 const struct kernel_hwtstamp_config *kernel_cfg)
82{
83 cfg->flags = kernel_cfg->flags;
84 cfg->tx_type = kernel_cfg->tx_type;
85 cfg->rx_filter = kernel_cfg->rx_filter;
86}
87
88static inline bool kernel_hwtstamp_config_changed(const struct kernel_hwtstamp_config *a,
89 const struct kernel_hwtstamp_config *b)
90{
91 return a->flags != b->flags ||
92 a->tx_type != b->tx_type ||
93 a->rx_filter != b->rx_filter;
94}
95
96#endif /* _LINUX_NET_TIMESTAMPING_H_ */
97

source code of linux/include/linux/net_tstamp.h