diff options
Diffstat (limited to 'include/linux/net_tstamp.h')
| -rw-r--r-- | include/linux/net_tstamp.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/include/linux/net_tstamp.h b/include/linux/net_tstamp.h new file mode 100644 index 000000000000..a3b8546354ac --- /dev/null +++ b/include/linux/net_tstamp.h | |||
| @@ -0,0 +1,104 @@ | |||
| 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 */ | ||
