| 1 |
13 |
serginhofr |
/*
|
| 2 |
|
|
* Userspace API for hardware time stamping of network packets
|
| 3 |
|
|
*
|
| 4 |
|
|
* Copyright (C) 2008,2009 Intel Corporation
|
| 5 |
|
|
* Author: Patrick Ohly <patrick.ohly@intel.com>
|
| 6 |
|
|
*
|
| 7 |
|
|
*/
|
| 8 |
|
|
|
| 9 |
|
|
#ifndef _NET_TIMESTAMPING_H
|
| 10 |
|
|
#define _NET_TIMESTAMPING_H
|
| 11 |
|
|
|
| 12 |
|
|
#include <linux/socket.h> /* for SO_TIMESTAMPING */
|
| 13 |
|
|
|
| 14 |
|
|
/* SO_TIMESTAMPING gets an integer bit field comprised of these values */
|
| 15 |
|
|
enum {
|
| 16 |
|
|
SOF_TIMESTAMPING_TX_HARDWARE = (1<<0),
|
| 17 |
|
|
SOF_TIMESTAMPING_TX_SOFTWARE = (1<<1),
|
| 18 |
|
|
SOF_TIMESTAMPING_RX_HARDWARE = (1<<2),
|
| 19 |
|
|
SOF_TIMESTAMPING_RX_SOFTWARE = (1<<3),
|
| 20 |
|
|
SOF_TIMESTAMPING_SOFTWARE = (1<<4),
|
| 21 |
|
|
SOF_TIMESTAMPING_SYS_HARDWARE = (1<<5),
|
| 22 |
|
|
SOF_TIMESTAMPING_RAW_HARDWARE = (1<<6),
|
| 23 |
|
|
SOF_TIMESTAMPING_MASK =
|
| 24 |
|
|
(SOF_TIMESTAMPING_RAW_HARDWARE - 1) |
|
| 25 |
|
|
SOF_TIMESTAMPING_RAW_HARDWARE
|
| 26 |
|
|
};
|
| 27 |
|
|
|
| 28 |
|
|
/**
|
| 29 |
|
|
* struct hwtstamp_config - %SIOCGHWTSTAMP and %SIOCSHWTSTAMP parameter
|
| 30 |
|
|
*
|
| 31 |
|
|
* @flags: no flags defined right now, must be zero for %SIOCSHWTSTAMP
|
| 32 |
|
|
* @tx_type: one of HWTSTAMP_TX_*
|
| 33 |
|
|
* @rx_filter: one of HWTSTAMP_FILTER_*
|
| 34 |
|
|
*
|
| 35 |
|
|
* %SIOCGHWTSTAMP and %SIOCSHWTSTAMP expect a &struct ifreq with a
|
| 36 |
|
|
* ifr_data pointer to this structure. For %SIOCSHWTSTAMP, if the
|
| 37 |
|
|
* driver or hardware does not support the requested @rx_filter value,
|
| 38 |
|
|
* the driver may use a more general filter mode. In this case
|
| 39 |
|
|
* @rx_filter will indicate the actual mode on return.
|
| 40 |
|
|
*/
|
| 41 |
|
|
struct hwtstamp_config {
|
| 42 |
|
|
int flags;
|
| 43 |
|
|
int tx_type;
|
| 44 |
|
|
int rx_filter;
|
| 45 |
|
|
};
|
| 46 |
|
|
|
| 47 |
|
|
/* possible values for hwtstamp_config->tx_type */
|
| 48 |
|
|
enum hwtstamp_tx_types {
|
| 49 |
|
|
/*
|
| 50 |
|
|
* No outgoing packet will need hardware time stamping;
|
| 51 |
|
|
* should a packet arrive which asks for it, no hardware
|
| 52 |
|
|
* time stamping will be done.
|
| 53 |
|
|
*/
|
| 54 |
|
|
HWTSTAMP_TX_OFF,
|
| 55 |
|
|
|
| 56 |
|
|
/*
|
| 57 |
|
|
* Enables hardware time stamping for outgoing packets;
|
| 58 |
|
|
* the sender of the packet decides which are to be
|
| 59 |
|
|
* time stamped by setting %SOF_TIMESTAMPING_TX_SOFTWARE
|
| 60 |
|
|
* before sending the packet.
|
| 61 |
|
|
*/
|
| 62 |
|
|
HWTSTAMP_TX_ON,
|
| 63 |
|
|
|
| 64 |
|
|
/*
|
| 65 |
|
|
* Enables time stamping for outgoing packets just as
|
| 66 |
|
|
* HWTSTAMP_TX_ON does, but also enables time stamp insertion
|
| 67 |
|
|
* directly into Sync packets. In this case, transmitted Sync
|
| 68 |
|
|
* packets will not received a time stamp via the socket error
|
| 69 |
|
|
* queue.
|
| 70 |
|
|
*/
|
| 71 |
|
|
HWTSTAMP_TX_ONESTEP_SYNC,
|
| 72 |
|
|
};
|
| 73 |
|
|
|
| 74 |
|
|
/* possible values for hwtstamp_config->rx_filter */
|
| 75 |
|
|
enum hwtstamp_rx_filters {
|
| 76 |
|
|
/* time stamp no incoming packet at all */
|
| 77 |
|
|
HWTSTAMP_FILTER_NONE,
|
| 78 |
|
|
|
| 79 |
|
|
/* time stamp any incoming packet */
|
| 80 |
|
|
HWTSTAMP_FILTER_ALL,
|
| 81 |
|
|
|
| 82 |
|
|
/* return value: time stamp all packets requested plus some others */
|
| 83 |
|
|
HWTSTAMP_FILTER_SOME,
|
| 84 |
|
|
|
| 85 |
|
|
/* PTP v1, UDP, any kind of event packet */
|
| 86 |
|
|
HWTSTAMP_FILTER_PTP_V1_L4_EVENT,
|
| 87 |
|
|
/* PTP v1, UDP, Sync packet */
|
| 88 |
|
|
HWTSTAMP_FILTER_PTP_V1_L4_SYNC,
|
| 89 |
|
|
/* PTP v1, UDP, Delay_req packet */
|
| 90 |
|
|
HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ,
|
| 91 |
|
|
/* PTP v2, UDP, any kind of event packet */
|
| 92 |
|
|
HWTSTAMP_FILTER_PTP_V2_L4_EVENT,
|
| 93 |
|
|
/* PTP v2, UDP, Sync packet */
|
| 94 |
|
|
HWTSTAMP_FILTER_PTP_V2_L4_SYNC,
|
| 95 |
|
|
/* PTP v2, UDP, Delay_req packet */
|
| 96 |
|
|
HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ,
|
| 97 |
|
|
|
| 98 |
|
|
/* 802.AS1, Ethernet, any kind of event packet */
|
| 99 |
|
|
HWTSTAMP_FILTER_PTP_V2_L2_EVENT,
|
| 100 |
|
|
/* 802.AS1, Ethernet, Sync packet */
|
| 101 |
|
|
HWTSTAMP_FILTER_PTP_V2_L2_SYNC,
|
| 102 |
|
|
/* 802.AS1, Ethernet, Delay_req packet */
|
| 103 |
|
|
HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ,
|
| 104 |
|
|
|
| 105 |
|
|
/* PTP v2/802.AS1, any layer, any kind of event packet */
|
| 106 |
|
|
HWTSTAMP_FILTER_PTP_V2_EVENT,
|
| 107 |
|
|
/* PTP v2/802.AS1, any layer, Sync packet */
|
| 108 |
|
|
HWTSTAMP_FILTER_PTP_V2_SYNC,
|
| 109 |
|
|
/* PTP v2/802.AS1, any layer, Delay_req packet */
|
| 110 |
|
|
HWTSTAMP_FILTER_PTP_V2_DELAY_REQ,
|
| 111 |
|
|
};
|
| 112 |
|
|
|
| 113 |
|
|
#endif /* _NET_TIMESTAMPING_H */
|
