mm: Don't pin ZERO_PAGE in pin_user_pages()
[linux-block.git] / 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 /**
9  * struct kernel_hwtstamp_config - Kernel copy of struct hwtstamp_config
10  *
11  * @flags: see struct hwtstamp_config
12  * @tx_type: see struct hwtstamp_config
13  * @rx_filter: see struct hwtstamp_config
14  *
15  * Prefer using this structure for in-kernel processing of hardware
16  * timestamping configuration, over the inextensible struct hwtstamp_config
17  * exposed to the %SIOCGHWTSTAMP and %SIOCSHWTSTAMP ioctl UAPI.
18  */
19 struct kernel_hwtstamp_config {
20         int flags;
21         int tx_type;
22         int rx_filter;
23 };
24
25 static inline void hwtstamp_config_to_kernel(struct kernel_hwtstamp_config *kernel_cfg,
26                                              const struct hwtstamp_config *cfg)
27 {
28         kernel_cfg->flags = cfg->flags;
29         kernel_cfg->tx_type = cfg->tx_type;
30         kernel_cfg->rx_filter = cfg->rx_filter;
31 }
32
33 #endif /* _LINUX_NET_TIMESTAMPING_H_ */