Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc
[cris-mirror.git] / include / linux / net_tstamp.h
bloba3b8546354ac407ee28ba8aeffd98430cc57098c
1 /*
2 * Userspace API for hardware time stamping of network packets
4 * Copyright (C) 2008,2009 Intel Corporation
5 * Author: Patrick Ohly <patrick.ohly@intel.com>
7 */
9 #ifndef _NET_TIMESTAMPING_H
10 #define _NET_TIMESTAMPING_H
12 #include <linux/socket.h> /* for SO_TIMESTAMPING */
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
28 /**
29 * struct hwtstamp_config - %SIOCSHWTSTAMP parameter
31 * @flags: no flags defined right now, must be zero
32 * @tx_type: one of HWTSTAMP_TX_*
33 * @rx_type: one of one of HWTSTAMP_FILTER_*
35 * %SIOCSHWTSTAMP expects a &struct ifreq with a ifr_data pointer to
36 * this structure. dev_ifsioc() in the kernel takes care of the
37 * translation between 32 bit userspace and 64 bit kernel. The
38 * structure is intentionally chosen so that it has the same layout on
39 * 32 and 64 bit systems, don't break this!
41 struct hwtstamp_config {
42 int flags;
43 int tx_type;
44 int rx_filter;
47 /* possible values for hwtstamp_config->tx_type */
48 enum {
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.
54 HWTSTAMP_TX_OFF,
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.
62 HWTSTAMP_TX_ON,
65 /* possible values for hwtstamp_config->rx_filter */
66 enum {
67 /* time stamp no incoming packet at all */
68 HWTSTAMP_FILTER_NONE,
70 /* time stamp any incoming packet */
71 HWTSTAMP_FILTER_ALL,
73 /* return value: time stamp all packets requested plus some others */
74 HWTSTAMP_FILTER_SOME,
76 /* PTP v1, UDP, any kind of event packet */
77 HWTSTAMP_FILTER_PTP_V1_L4_EVENT,
78 /* PTP v1, UDP, Sync packet */
79 HWTSTAMP_FILTER_PTP_V1_L4_SYNC,
80 /* PTP v1, UDP, Delay_req packet */
81 HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ,
82 /* PTP v2, UDP, any kind of event packet */
83 HWTSTAMP_FILTER_PTP_V2_L4_EVENT,
84 /* PTP v2, UDP, Sync packet */
85 HWTSTAMP_FILTER_PTP_V2_L4_SYNC,
86 /* PTP v2, UDP, Delay_req packet */
87 HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ,
89 /* 802.AS1, Ethernet, any kind of event packet */
90 HWTSTAMP_FILTER_PTP_V2_L2_EVENT,
91 /* 802.AS1, Ethernet, Sync packet */
92 HWTSTAMP_FILTER_PTP_V2_L2_SYNC,
93 /* 802.AS1, Ethernet, Delay_req packet */
94 HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ,
96 /* PTP v2/802.AS1, any layer, any kind of event packet */
97 HWTSTAMP_FILTER_PTP_V2_EVENT,
98 /* PTP v2/802.AS1, any layer, Sync packet */
99 HWTSTAMP_FILTER_PTP_V2_SYNC,
100 /* PTP v2/802.AS1, any layer, Delay_req packet */
101 HWTSTAMP_FILTER_PTP_V2_DELAY_REQ,
104 #endif /* _NET_TIMESTAMPING_H */