diff options
Diffstat (limited to 'include/uapi/linux/net_tstamp.h')
| -rw-r--r-- | include/uapi/linux/net_tstamp.h | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/include/uapi/linux/net_tstamp.h b/include/uapi/linux/net_tstamp.h new file mode 100644 index 000000000..7ed0b3d1c --- /dev/null +++ b/include/uapi/linux/net_tstamp.h @@ -0,0 +1,176 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * Userspace API for hardware time stamping of network packets + * + * Copyright (C) 2008,2009 Intel Corporation + * Author: Patrick Ohly <patrick.ohly@intel.com> + * + */ + +#ifndef _NET_TIMESTAMPING_H +#define _NET_TIMESTAMPING_H + +#include <linux/types.h> +#include <linux/socket.h> /* for SO_TIMESTAMPING */ + +/* SO_TIMESTAMPING gets an integer bit field comprised of these values */ +enum { + SOF_TIMESTAMPING_TX_HARDWARE = (1<<0), + SOF_TIMESTAMPING_TX_SOFTWARE = (1<<1), + SOF_TIMESTAMPING_RX_HARDWARE = (1<<2), + SOF_TIMESTAMPING_RX_SOFTWARE = (1<<3), + SOF_TIMESTAMPING_SOFTWARE = (1<<4), + SOF_TIMESTAMPING_SYS_HARDWARE = (1<<5), + SOF_TIMESTAMPING_RAW_HARDWARE = (1<<6), + SOF_TIMESTAMPING_OPT_ID = (1<<7), + SOF_TIMESTAMPING_TX_SCHED = (1<<8), + SOF_TIMESTAMPING_TX_ACK = (1<<9), + SOF_TIMESTAMPING_OPT_CMSG = (1<<10), + SOF_TIMESTAMPING_OPT_TSONLY = (1<<11), + SOF_TIMESTAMPING_OPT_STATS = (1<<12), + SOF_TIMESTAMPING_OPT_PKTINFO = (1<<13), + SOF_TIMESTAMPING_OPT_TX_SWHW = (1<<14), + + SOF_TIMESTAMPING_LAST = SOF_TIMESTAMPING_OPT_TX_SWHW, + SOF_TIMESTAMPING_MASK = (SOF_TIMESTAMPING_LAST - 1) | + SOF_TIMESTAMPING_LAST +}; + +/* + * SO_TIMESTAMPING flags are either for recording a packet timestamp or for + * reporting the timestamp to user space. + * Recording flags can be set both via socket options and control messages. + */ +#define SOF_TIMESTAMPING_TX_RECORD_MASK (SOF_TIMESTAMPING_TX_HARDWARE | \ + SOF_TIMESTAMPING_TX_SOFTWARE | \ + SOF_TIMESTAMPING_TX_SCHED | \ + SOF_TIMESTAMPING_TX_ACK) + +/** + * struct hwtstamp_config - %SIOCGHWTSTAMP and %SIOCSHWTSTAMP parameter + * + * @flags: no flags defined right now, must be zero for %SIOCSHWTSTAMP + * @tx_type: one of HWTSTAMP_TX_* + * @rx_filter: one of HWTSTAMP_FILTER_* + * + * %SIOCGHWTSTAMP and %SIOCSHWTSTAMP expect a &struct ifreq with a + * ifr_data pointer to this structure. For %SIOCSHWTSTAMP, if the + * driver or hardware does not support the requested @rx_filter value, + * the driver may use a more general filter mode. In this case + * @rx_filter will indicate the actual mode on return. + */ +struct hwtstamp_config { + int flags; + int tx_type; + int rx_filter; +}; + +/* possible values for hwtstamp_config->tx_type */ +enum hwtstamp_tx_types { + /* + * No outgoing packet will need hardware time stamping; + * should a packet arrive which asks for it, no hardware + * time stamping will be done. + */ + HWTSTAMP_TX_OFF, + + /* + * Enables hardware time stamping for outgoing packets; + * the sender of the packet decides which are to be + * time stamped by setting %SOF_TIMESTAMPING_TX_SOFTWARE + * before sending the packet. + */ + HWTSTAMP_TX_ON, + + /* + * Enables time stamping for outgoing packets just as + * HWTSTAMP_TX_ON does, but also enables time stamp insertion + * directly into Sync packets. In this case, transmitted Sync + * packets will not received a time stamp via the socket error + * queue. + */ + HWTSTAMP_TX_ONESTEP_SYNC, + + /* + * Same as HWTSTAMP_TX_ONESTEP_SYNC, but also enables time + * stamp insertion directly into PDelay_Resp packets. In this + * case, neither transmitted Sync nor PDelay_Resp packets will + * receive a time stamp via the socket error queue. + */ + HWTSTAMP_TX_ONESTEP_P2P, + + /* add new constants above here */ + __HWTSTAMP_TX_CNT +}; + +/* possible values for hwtstamp_config->rx_filter */ +enum hwtstamp_rx_filters { + /* time stamp no incoming packet at all */ + HWTSTAMP_FILTER_NONE, + + /* time stamp any incoming packet */ + HWTSTAMP_FILTER_ALL, + + /* return value: time stamp all packets requested plus some others */ + HWTSTAMP_FILTER_SOME, + + /* PTP v1, UDP, any kind of event packet */ + HWTSTAMP_FILTER_PTP_V1_L4_EVENT, + /* PTP v1, UDP, Sync packet */ + HWTSTAMP_FILTER_PTP_V1_L4_SYNC, + /* PTP v1, UDP, Delay_req packet */ + HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ, + /* PTP v2, UDP, any kind of event packet */ + HWTSTAMP_FILTER_PTP_V2_L4_EVENT, + /* PTP v2, UDP, Sync packet */ + HWTSTAMP_FILTER_PTP_V2_L4_SYNC, + /* PTP v2, UDP, Delay_req packet */ + HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ, + + /* 802.AS1, Ethernet, any kind of event packet */ + HWTSTAMP_FILTER_PTP_V2_L2_EVENT, + /* 802.AS1, Ethernet, Sync packet */ + HWTSTAMP_FILTER_PTP_V2_L2_SYNC, + /* 802.AS1, Ethernet, Delay_req packet */ + HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ, + + /* PTP v2/802.AS1, any layer, any kind of event packet */ + HWTSTAMP_FILTER_PTP_V2_EVENT, + /* PTP v2/802.AS1, any layer, Sync packet */ + HWTSTAMP_FILTER_PTP_V2_SYNC, + /* PTP v2/802.AS1, any layer, Delay_req packet */ + HWTSTAMP_FILTER_PTP_V2_DELAY_REQ, + + /* NTP, UDP, all versions and packet modes */ + HWTSTAMP_FILTER_NTP_ALL, + + /* add new constants above here */ + __HWTSTAMP_FILTER_CNT +}; + +/* SCM_TIMESTAMPING_PKTINFO control message */ +struct scm_ts_pktinfo { + __u32 if_index; + __u32 pkt_length; + __u32 reserved[2]; +}; + +/* + * SO_TXTIME gets a struct sock_txtime with flags being an integer bit + * field comprised of these values. + */ +enum txtime_flags { + SOF_TXTIME_DEADLINE_MODE = (1 << 0), + SOF_TXTIME_REPORT_ERRORS = (1 << 1), + + SOF_TXTIME_FLAGS_LAST = SOF_TXTIME_REPORT_ERRORS, + SOF_TXTIME_FLAGS_MASK = (SOF_TXTIME_FLAGS_LAST - 1) | + SOF_TXTIME_FLAGS_LAST +}; + +struct sock_txtime { + __kernel_clockid_t clockid;/* reference clockid */ + __u32 flags; /* as defined by enum txtime_flags */ +}; + +#endif /* _NET_TIMESTAMPING_H */ |