| /* |
| * 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/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_LAST = SOF_TIMESTAMPING_OPT_TSONLY, |
| SOF_TIMESTAMPING_MASK = (SOF_TIMESTAMPING_LAST - 1) | |
| SOF_TIMESTAMPING_LAST |
| }; |
| |
| /** |
| * 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, |
| }; |
| |
| /* 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, |
| }; |
| |
| #endif /* _NET_TIMESTAMPING_H */ |
