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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 | ||
aad9c8c4 | 12 | #include <linux/types.h> |
cb9eff09 PO |
13 | #include <linux/socket.h> /* for SO_TIMESTAMPING */ |
14 | ||
15 | /* SO_TIMESTAMPING gets an integer bit field comprised of these values */ | |
16 | enum { | |
17 | SOF_TIMESTAMPING_TX_HARDWARE = (1<<0), | |
18 | SOF_TIMESTAMPING_TX_SOFTWARE = (1<<1), | |
19 | SOF_TIMESTAMPING_RX_HARDWARE = (1<<2), | |
20 | SOF_TIMESTAMPING_RX_SOFTWARE = (1<<3), | |
21 | SOF_TIMESTAMPING_SOFTWARE = (1<<4), | |
22 | SOF_TIMESTAMPING_SYS_HARDWARE = (1<<5), | |
23 | SOF_TIMESTAMPING_RAW_HARDWARE = (1<<6), | |
09c2d251 | 24 | SOF_TIMESTAMPING_OPT_ID = (1<<7), |
e7fd2885 | 25 | SOF_TIMESTAMPING_TX_SCHED = (1<<8), |
e1c8a607 | 26 | SOF_TIMESTAMPING_TX_ACK = (1<<9), |
829ae9d6 | 27 | SOF_TIMESTAMPING_OPT_CMSG = (1<<10), |
49ca0d8b | 28 | SOF_TIMESTAMPING_OPT_TSONLY = (1<<11), |
1c885808 | 29 | SOF_TIMESTAMPING_OPT_STATS = (1<<12), |
aad9c8c4 | 30 | SOF_TIMESTAMPING_OPT_PKTINFO = (1<<13), |
09c2d251 | 31 | |
aad9c8c4 | 32 | SOF_TIMESTAMPING_LAST = SOF_TIMESTAMPING_OPT_PKTINFO, |
09c2d251 WB |
33 | SOF_TIMESTAMPING_MASK = (SOF_TIMESTAMPING_LAST - 1) | |
34 | SOF_TIMESTAMPING_LAST | |
cb9eff09 PO |
35 | }; |
36 | ||
3dd17e63 SHY |
37 | /* |
38 | * SO_TIMESTAMPING flags are either for recording a packet timestamp or for | |
39 | * reporting the timestamp to user space. | |
40 | * Recording flags can be set both via socket options and control messages. | |
41 | */ | |
42 | #define SOF_TIMESTAMPING_TX_RECORD_MASK (SOF_TIMESTAMPING_TX_HARDWARE | \ | |
43 | SOF_TIMESTAMPING_TX_SOFTWARE | \ | |
44 | SOF_TIMESTAMPING_TX_SCHED | \ | |
45 | SOF_TIMESTAMPING_TX_ACK) | |
46 | ||
cb9eff09 | 47 | /** |
fd468c74 | 48 | * struct hwtstamp_config - %SIOCGHWTSTAMP and %SIOCSHWTSTAMP parameter |
cb9eff09 | 49 | * |
fd468c74 | 50 | * @flags: no flags defined right now, must be zero for %SIOCSHWTSTAMP |
cb9eff09 | 51 | * @tx_type: one of HWTSTAMP_TX_* |
e1bd1dc2 | 52 | * @rx_filter: one of HWTSTAMP_FILTER_* |
cb9eff09 | 53 | * |
fd468c74 BH |
54 | * %SIOCGHWTSTAMP and %SIOCSHWTSTAMP expect a &struct ifreq with a |
55 | * ifr_data pointer to this structure. For %SIOCSHWTSTAMP, if the | |
56 | * driver or hardware does not support the requested @rx_filter value, | |
57 | * the driver may use a more general filter mode. In this case | |
58 | * @rx_filter will indicate the actual mode on return. | |
cb9eff09 PO |
59 | */ |
60 | struct hwtstamp_config { | |
61 | int flags; | |
62 | int tx_type; | |
63 | int rx_filter; | |
64 | }; | |
65 | ||
66 | /* possible values for hwtstamp_config->tx_type */ | |
4dc360c5 | 67 | enum hwtstamp_tx_types { |
cb9eff09 PO |
68 | /* |
69 | * No outgoing packet will need hardware time stamping; | |
70 | * should a packet arrive which asks for it, no hardware | |
71 | * time stamping will be done. | |
72 | */ | |
73 | HWTSTAMP_TX_OFF, | |
74 | ||
75 | /* | |
76 | * Enables hardware time stamping for outgoing packets; | |
77 | * the sender of the packet decides which are to be | |
78 | * time stamped by setting %SOF_TIMESTAMPING_TX_SOFTWARE | |
79 | * before sending the packet. | |
80 | */ | |
81 | HWTSTAMP_TX_ON, | |
3ce23fa9 RC |
82 | |
83 | /* | |
84 | * Enables time stamping for outgoing packets just as | |
85 | * HWTSTAMP_TX_ON does, but also enables time stamp insertion | |
86 | * directly into Sync packets. In this case, transmitted Sync | |
87 | * packets will not received a time stamp via the socket error | |
88 | * queue. | |
89 | */ | |
90 | HWTSTAMP_TX_ONESTEP_SYNC, | |
cb9eff09 PO |
91 | }; |
92 | ||
93 | /* possible values for hwtstamp_config->rx_filter */ | |
4dc360c5 | 94 | enum hwtstamp_rx_filters { |
cb9eff09 PO |
95 | /* time stamp no incoming packet at all */ |
96 | HWTSTAMP_FILTER_NONE, | |
97 | ||
98 | /* time stamp any incoming packet */ | |
99 | HWTSTAMP_FILTER_ALL, | |
100 | ||
101 | /* return value: time stamp all packets requested plus some others */ | |
102 | HWTSTAMP_FILTER_SOME, | |
103 | ||
104 | /* PTP v1, UDP, any kind of event packet */ | |
105 | HWTSTAMP_FILTER_PTP_V1_L4_EVENT, | |
106 | /* PTP v1, UDP, Sync packet */ | |
107 | HWTSTAMP_FILTER_PTP_V1_L4_SYNC, | |
108 | /* PTP v1, UDP, Delay_req packet */ | |
109 | HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ, | |
110 | /* PTP v2, UDP, any kind of event packet */ | |
111 | HWTSTAMP_FILTER_PTP_V2_L4_EVENT, | |
112 | /* PTP v2, UDP, Sync packet */ | |
113 | HWTSTAMP_FILTER_PTP_V2_L4_SYNC, | |
114 | /* PTP v2, UDP, Delay_req packet */ | |
115 | HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ, | |
116 | ||
117 | /* 802.AS1, Ethernet, any kind of event packet */ | |
118 | HWTSTAMP_FILTER_PTP_V2_L2_EVENT, | |
119 | /* 802.AS1, Ethernet, Sync packet */ | |
120 | HWTSTAMP_FILTER_PTP_V2_L2_SYNC, | |
121 | /* 802.AS1, Ethernet, Delay_req packet */ | |
122 | HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ, | |
123 | ||
124 | /* PTP v2/802.AS1, any layer, any kind of event packet */ | |
125 | HWTSTAMP_FILTER_PTP_V2_EVENT, | |
126 | /* PTP v2/802.AS1, any layer, Sync packet */ | |
127 | HWTSTAMP_FILTER_PTP_V2_SYNC, | |
128 | /* PTP v2/802.AS1, any layer, Delay_req packet */ | |
129 | HWTSTAMP_FILTER_PTP_V2_DELAY_REQ, | |
b8210a9e ML |
130 | |
131 | /* NTP, UDP, all versions and packet modes */ | |
132 | HWTSTAMP_FILTER_NTP_ALL, | |
cb9eff09 PO |
133 | }; |
134 | ||
aad9c8c4 ML |
135 | /* SCM_TIMESTAMPING_PKTINFO control message */ |
136 | struct scm_ts_pktinfo { | |
137 | __u32 if_index; | |
138 | __u32 pkt_length; | |
139 | __u32 reserved[2]; | |
140 | }; | |
141 | ||
cb9eff09 | 142 | #endif /* _NET_TIMESTAMPING_H */ |