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176 lines
5.2 KiB
176 lines
5.2 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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/* |
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* Userspace API for hardware time stamping of network packets |
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* |
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* Copyright (C) 2008,2009 Intel Corporation |
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* Author: Patrick Ohly <[email protected]> |
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* |
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*/ |
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#ifndef _NET_TIMESTAMPING_H |
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#define _NET_TIMESTAMPING_H |
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#include <linux/types.h> |
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#include <linux/socket.h> /* for SO_TIMESTAMPING */ |
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/* SO_TIMESTAMPING gets an integer bit field comprised of these values */ |
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enum { |
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SOF_TIMESTAMPING_TX_HARDWARE = (1<<0), |
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SOF_TIMESTAMPING_TX_SOFTWARE = (1<<1), |
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SOF_TIMESTAMPING_RX_HARDWARE = (1<<2), |
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SOF_TIMESTAMPING_RX_SOFTWARE = (1<<3), |
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SOF_TIMESTAMPING_SOFTWARE = (1<<4), |
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SOF_TIMESTAMPING_SYS_HARDWARE = (1<<5), |
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SOF_TIMESTAMPING_RAW_HARDWARE = (1<<6), |
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SOF_TIMESTAMPING_OPT_ID = (1<<7), |
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SOF_TIMESTAMPING_TX_SCHED = (1<<8), |
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SOF_TIMESTAMPING_TX_ACK = (1<<9), |
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SOF_TIMESTAMPING_OPT_CMSG = (1<<10), |
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SOF_TIMESTAMPING_OPT_TSONLY = (1<<11), |
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SOF_TIMESTAMPING_OPT_STATS = (1<<12), |
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SOF_TIMESTAMPING_OPT_PKTINFO = (1<<13), |
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SOF_TIMESTAMPING_OPT_TX_SWHW = (1<<14), |
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SOF_TIMESTAMPING_LAST = SOF_TIMESTAMPING_OPT_TX_SWHW, |
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SOF_TIMESTAMPING_MASK = (SOF_TIMESTAMPING_LAST - 1) | |
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SOF_TIMESTAMPING_LAST |
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}; |
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/* |
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* SO_TIMESTAMPING flags are either for recording a packet timestamp or for |
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* reporting the timestamp to user space. |
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* Recording flags can be set both via socket options and control messages. |
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*/ |
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#define SOF_TIMESTAMPING_TX_RECORD_MASK (SOF_TIMESTAMPING_TX_HARDWARE | \ |
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SOF_TIMESTAMPING_TX_SOFTWARE | \ |
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SOF_TIMESTAMPING_TX_SCHED | \ |
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SOF_TIMESTAMPING_TX_ACK) |
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/** |
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* struct hwtstamp_config - %SIOCGHWTSTAMP and %SIOCSHWTSTAMP parameter |
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* |
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* @flags: no flags defined right now, must be zero for %SIOCSHWTSTAMP |
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* @tx_type: one of HWTSTAMP_TX_* |
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* @rx_filter: one of HWTSTAMP_FILTER_* |
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* |
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* %SIOCGHWTSTAMP and %SIOCSHWTSTAMP expect a &struct ifreq with a |
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* ifr_data pointer to this structure. For %SIOCSHWTSTAMP, if the |
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* driver or hardware does not support the requested @rx_filter value, |
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* the driver may use a more general filter mode. In this case |
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* @rx_filter will indicate the actual mode on return. |
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*/ |
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struct 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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}; |
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/* possible values for hwtstamp_config->tx_type */ |
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enum hwtstamp_tx_types { |
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/* |
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* No outgoing packet will need hardware time stamping; |
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* should a packet arrive which asks for it, no hardware |
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* time stamping will be done. |
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*/ |
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HWTSTAMP_TX_OFF, |
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/* |
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* Enables hardware time stamping for outgoing packets; |
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* the sender of the packet decides which are to be |
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* time stamped by setting %SOF_TIMESTAMPING_TX_SOFTWARE |
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* before sending the packet. |
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*/ |
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HWTSTAMP_TX_ON, |
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/* |
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* Enables time stamping for outgoing packets just as |
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* HWTSTAMP_TX_ON does, but also enables time stamp insertion |
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* directly into Sync packets. In this case, transmitted Sync |
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* packets will not received a time stamp via the socket error |
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* queue. |
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*/ |
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HWTSTAMP_TX_ONESTEP_SYNC, |
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/* |
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* Same as HWTSTAMP_TX_ONESTEP_SYNC, but also enables time |
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* stamp insertion directly into PDelay_Resp packets. In this |
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* case, neither transmitted Sync nor PDelay_Resp packets will |
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* receive a time stamp via the socket error queue. |
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*/ |
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HWTSTAMP_TX_ONESTEP_P2P, |
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/* add new constants above here */ |
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__HWTSTAMP_TX_CNT |
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}; |
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/* possible values for hwtstamp_config->rx_filter */ |
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enum hwtstamp_rx_filters { |
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/* time stamp no incoming packet at all */ |
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HWTSTAMP_FILTER_NONE, |
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/* time stamp any incoming packet */ |
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HWTSTAMP_FILTER_ALL, |
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/* return value: time stamp all packets requested plus some others */ |
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HWTSTAMP_FILTER_SOME, |
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/* PTP v1, UDP, any kind of event packet */ |
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HWTSTAMP_FILTER_PTP_V1_L4_EVENT, |
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/* PTP v1, UDP, Sync packet */ |
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HWTSTAMP_FILTER_PTP_V1_L4_SYNC, |
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/* PTP v1, UDP, Delay_req packet */ |
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HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ, |
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/* PTP v2, UDP, any kind of event packet */ |
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HWTSTAMP_FILTER_PTP_V2_L4_EVENT, |
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/* PTP v2, UDP, Sync packet */ |
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HWTSTAMP_FILTER_PTP_V2_L4_SYNC, |
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/* PTP v2, UDP, Delay_req packet */ |
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HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ, |
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/* 802.AS1, Ethernet, any kind of event packet */ |
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HWTSTAMP_FILTER_PTP_V2_L2_EVENT, |
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/* 802.AS1, Ethernet, Sync packet */ |
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HWTSTAMP_FILTER_PTP_V2_L2_SYNC, |
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/* 802.AS1, Ethernet, Delay_req packet */ |
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HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ, |
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/* PTP v2/802.AS1, any layer, any kind of event packet */ |
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HWTSTAMP_FILTER_PTP_V2_EVENT, |
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/* PTP v2/802.AS1, any layer, Sync packet */ |
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HWTSTAMP_FILTER_PTP_V2_SYNC, |
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/* PTP v2/802.AS1, any layer, Delay_req packet */ |
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HWTSTAMP_FILTER_PTP_V2_DELAY_REQ, |
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/* NTP, UDP, all versions and packet modes */ |
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HWTSTAMP_FILTER_NTP_ALL, |
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/* add new constants above here */ |
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__HWTSTAMP_FILTER_CNT |
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}; |
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/* SCM_TIMESTAMPING_PKTINFO control message */ |
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struct scm_ts_pktinfo { |
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__u32 if_index; |
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__u32 pkt_length; |
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__u32 reserved[2]; |
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}; |
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/* |
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* SO_TXTIME gets a struct sock_txtime with flags being an integer bit |
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* field comprised of these values. |
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*/ |
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enum txtime_flags { |
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SOF_TXTIME_DEADLINE_MODE = (1 << 0), |
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SOF_TXTIME_REPORT_ERRORS = (1 << 1), |
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SOF_TXTIME_FLAGS_LAST = SOF_TXTIME_REPORT_ERRORS, |
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SOF_TXTIME_FLAGS_MASK = (SOF_TXTIME_FLAGS_LAST - 1) | |
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SOF_TXTIME_FLAGS_LAST |
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}; |
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struct sock_txtime { |
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__kernel_clockid_t clockid;/* reference clockid */ |
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__u32 flags; /* as defined by enum txtime_flags */ |
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}; |
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#endif /* _NET_TIMESTAMPING_H */
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