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35f7cad174
Introduce the description of a hwtstamp provider, mainly defined with a the hwtstamp source and the phydev pointer. Add a hwtstamp provider description within the netdev structure to allow saving the hwtstamp we want to use. This prepares for future support of an ethtool netlink command to select the desired hwtstamp provider. By default, the old API that does not support hwtstamp selectability is used, meaning the hwtstamp provider pointer is unset. Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
102 lines
3.0 KiB
C
102 lines
3.0 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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#define SOF_TIMESTAMPING_SOFTWARE_MASK (SOF_TIMESTAMPING_RX_SOFTWARE | \
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SOF_TIMESTAMPING_TX_SOFTWARE | \
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SOF_TIMESTAMPING_SOFTWARE)
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#define SOF_TIMESTAMPING_HARDWARE_MASK (SOF_TIMESTAMPING_RX_HARDWARE | \
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SOF_TIMESTAMPING_TX_HARDWARE | \
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SOF_TIMESTAMPING_RAW_HARDWARE)
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enum hwtstamp_source {
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HWTSTAMP_SOURCE_UNSPEC,
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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 hwtstamp_provider_desc - hwtstamp provider description
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*
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* @index: index of the hwtstamp provider.
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* @qualifier: hwtstamp provider qualifier.
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*/
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struct hwtstamp_provider_desc {
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int index;
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enum hwtstamp_provider_qualifier qualifier;
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};
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/**
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* struct hwtstamp_provider - hwtstamp provider object
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*
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* @rcu_head: RCU callback used to free the struct.
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* @source: source of the hwtstamp provider.
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* @phydev: pointer of the phydev source in case a PTP coming from phylib
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* @desc: hwtstamp provider description.
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*/
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struct hwtstamp_provider {
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struct rcu_head rcu_head;
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enum hwtstamp_source source;
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struct phy_device *phydev;
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struct hwtstamp_provider_desc desc;
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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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* @qualifier: qualifier of the hwtstamp provider
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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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enum hwtstamp_provider_qualifier qualifier;
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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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