projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| b8aa1682 JD |
1 | /* |
| 2 | * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com> | |
| 3 | * Julien Desfossez <julien.desfossez@efficios.com> | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify | |
| 6 | * it under the terms of the GNU General Public License, version 2 only, | |
| 7 | * as published by the Free Software Foundation. | |
| 8 | * | |
| 9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 12 | * more details. | |
| 13 | * | |
| 14 | * You should have received a copy of the GNU General Public License along | |
| 15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
| 16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 17 | */ | |
| 18 | ||
| 19 | #ifndef _RELAYD_COMM | |
| 20 | #define _RELAYD_COMM | |
| 21 | ||
| 22 | #define _GNU_SOURCE | |
| 23 | ||
| 24 | #include <limits.h> | |
| 25 | #include <stdint.h> | |
| 26 | ||
| 27 | #include <lttng/lttng.h> | |
| 28 | ||
| 0a6b5085 DG |
29 | #define RELAYD_VERSION_COMM_MAJOR 2 |
| 30 | #define RELAYD_VERSION_COMM_MINOR 1 | |
| 31 | ||
| b8aa1682 JD |
32 | /* |
| 33 | * lttng-relayd communication header. | |
| 34 | */ | |
| 35 | struct lttcomm_relayd_hdr { | |
| 36 | /* Circuit ID not used for now so always ignored */ | |
| 37 | uint64_t circuit_id; | |
| 38 | uint64_t data_size; /* data size following this header */ | |
| 39 | uint32_t cmd; /* enum lttcomm_sessiond_command */ | |
| 40 | uint32_t cmd_version; /* command version */ | |
| 41 | } __attribute__ ((__packed__)); | |
| 42 | ||
| 43 | /* | |
| 44 | * lttng-relayd data header. | |
| 45 | */ | |
| 46 | struct lttcomm_relayd_data_hdr { | |
| 47 | /* Circuit ID not used for now so always ignored */ | |
| 48 | uint64_t circuit_id; | |
| 49 | uint64_t stream_id; /* Stream ID known by the relayd */ | |
| 173af62f | 50 | uint64_t net_seq_num; /* Network sequence number, per stream. */ |
| b8aa1682 | 51 | uint32_t data_size; /* data size following this header */ |
| 1d4dfdef | 52 | uint32_t padding_size; /* Size of 0 padding the data */ |
| b8aa1682 JD |
53 | } __attribute__ ((__packed__)); |
| 54 | ||
| b8aa1682 JD |
55 | /* |
| 56 | * Used to add a stream on the relay daemon. | |
| 57 | */ | |
| 58 | struct lttcomm_relayd_add_stream { | |
| 59 | char channel_name[LTTNG_SYMBOL_NAME_LEN]; | |
| 60 | char pathname[PATH_MAX]; | |
| 61 | } __attribute__ ((__packed__)); | |
| 62 | ||
| 63 | /* | |
| 64 | * Answer from an add stream command. | |
| 65 | */ | |
| 66 | struct lttcomm_relayd_status_stream { | |
| 67 | uint64_t handle; | |
| 68 | uint32_t ret_code; | |
| 69 | } __attribute__ ((__packed__)); | |
| 70 | ||
| 71 | /* | |
| 72 | * Used to return command code for command not needing special data. | |
| 73 | */ | |
| 74 | struct lttcomm_relayd_generic_reply { | |
| 75 | uint32_t ret_code; | |
| 76 | } __attribute__ ((__packed__)); | |
| 77 | ||
| 78 | /* | |
| 79 | * Used to update synchronization information. | |
| 80 | */ | |
| 81 | struct lttcomm_relayd_update_sync_info { | |
| 173af62f | 82 | /* TODO: fill the structure. Feature not implemented yet */ |
| b8aa1682 JD |
83 | } __attribute__ ((__packed__)); |
| 84 | ||
| 85 | /* | |
| 86 | * Version command. | |
| 87 | */ | |
| 88 | struct lttcomm_relayd_version { | |
| 89 | uint32_t major; | |
| 90 | uint32_t minor; | |
| 91 | } __attribute__ ((__packed__)); | |
| 92 | ||
| 93 | /* | |
| 94 | * Metadata payload used when metadata command is sent. | |
| 95 | */ | |
| 96 | struct lttcomm_relayd_metadata_payload { | |
| 97 | uint64_t stream_id; | |
| 1d4dfdef | 98 | uint32_t padding_size; |
| b8aa1682 JD |
99 | char payload[]; |
| 100 | } __attribute__ ((__packed__)); | |
| 101 | ||
| 173af62f DG |
102 | /* |
| 103 | * Used to indicate that a specific stream id can now be closed. | |
| 104 | */ | |
| 105 | struct lttcomm_relayd_close_stream { | |
| 106 | uint64_t stream_id; | |
| 107 | uint64_t last_net_seq_num; /* sequence number of last packet */ | |
| 108 | } __attribute__ ((__packed__)); | |
| 109 | ||
| c8f59ee5 DG |
110 | /* |
| 111 | * Used to test if for a given stream id the data is available on the relayd | |
| 112 | * side for reading. | |
| 113 | */ | |
| 114 | struct lttcomm_relayd_data_available { | |
| 115 | uint64_t stream_id; | |
| 116 | uint64_t last_net_seq_num; /* Sequence number of the last packet */ | |
| 117 | } __attribute__ ((__packed__)); | |
| 118 | ||
| b8aa1682 | 119 | #endif /* _RELAYD_COMM */ |