Commit | Line | Data |
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cb9eff09 PO |
1 | /* |
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 - %SIOCSHWTSTAMP parameter | |
30 | * | |
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_* | |
34 | * | |
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! | |
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 { | |
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 | /* possible values for hwtstamp_config->rx_filter */ | |
66 | enum { | |
67 | /* time stamp no incoming packet at all */ | |
68 | HWTSTAMP_FILTER_NONE, | |
69 | ||
70 | /* time stamp any incoming packet */ | |
71 | HWTSTAMP_FILTER_ALL, | |
72 | ||
73 | /* return value: time stamp all packets requested plus some others */ | |
74 | HWTSTAMP_FILTER_SOME, | |
75 | ||
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, | |
88 | ||
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, | |
95 | ||
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, | |
102 | }; | |
103 | ||
104 | #endif /* _NET_TIMESTAMPING_H */ |