tests: Implement tests for lttng-ust LTTNG_UST_BLOCKING_RETRY_TIMEOUT
[lttng-tools.git] / src / common / sessiond-comm / relayd.h
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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
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22#include <limits.h>
23#include <stdint.h>
24
25#include <lttng/lttng.h>
ce2a9e76 26#include <common/defaults.h>
50adc264 27#include <common/index/ctf-index.h>
b8aa1682 28
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29#define RELAYD_VERSION_COMM_MAJOR VERSION_MAJOR
30#define RELAYD_VERSION_COMM_MINOR VERSION_MINOR
0a6b5085 31
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32/*
33 * lttng-relayd communication header.
34 */
35struct 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 */
7c9534d6 39 uint32_t cmd; /* enum lttcomm_relayd_command */
b8aa1682 40 uint32_t cmd_version; /* command version */
a9e87764 41} LTTNG_PACKED;
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42
43/*
44 * lttng-relayd data header.
45 */
46struct 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 */
a9e87764 53} LTTNG_PACKED;
b8aa1682 54
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55/*
56 * Reply from a create session command.
57 */
58struct lttcomm_relayd_status_session {
59 uint64_t session_id;
60 uint32_t ret_code;
a9e87764 61} LTTNG_PACKED;
c5b6f4f0 62
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63/*
64 * Used to add a stream on the relay daemon.
65 */
66struct lttcomm_relayd_add_stream {
ce2a9e76 67 char channel_name[DEFAULT_STREAM_NAME_LEN];
ba86d0a7 68 char pathname[LTTNG_PATH_MAX];
a9e87764 69} LTTNG_PACKED;
b8aa1682 70
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71/*
72 * Used to add a stream on the relay daemon.
73 * Protocol version 2.2
74 */
75struct lttcomm_relayd_add_stream_2_2 {
76 char channel_name[DEFAULT_STREAM_NAME_LEN];
ba86d0a7 77 char pathname[LTTNG_PATH_MAX];
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78 uint64_t tracefile_size;
79 uint64_t tracefile_count;
80} LTTNG_PACKED;
81
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82/*
83 * Answer from an add stream command.
84 */
85struct lttcomm_relayd_status_stream {
86 uint64_t handle;
87 uint32_t ret_code;
a9e87764 88} LTTNG_PACKED;
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89
90/*
91 * Used to return command code for command not needing special data.
92 */
93struct lttcomm_relayd_generic_reply {
94 uint32_t ret_code;
a9e87764 95} LTTNG_PACKED;
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96
97/*
98 * Used to update synchronization information.
99 */
100struct lttcomm_relayd_update_sync_info {
173af62f 101 /* TODO: fill the structure. Feature not implemented yet */
a9e87764 102} LTTNG_PACKED;
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103
104/*
105 * Version command.
106 */
107struct lttcomm_relayd_version {
108 uint32_t major;
109 uint32_t minor;
a9e87764 110} LTTNG_PACKED;
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111
112/*
113 * Metadata payload used when metadata command is sent.
114 */
115struct lttcomm_relayd_metadata_payload {
116 uint64_t stream_id;
1d4dfdef 117 uint32_t padding_size;
b8aa1682 118 char payload[];
a9e87764 119} LTTNG_PACKED;
b8aa1682 120
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121/*
122 * Used to indicate that a specific stream id can now be closed.
123 */
124struct lttcomm_relayd_close_stream {
125 uint64_t stream_id;
126 uint64_t last_net_seq_num; /* sequence number of last packet */
a9e87764 127} LTTNG_PACKED;
173af62f 128
c8f59ee5 129/*
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130 * Used to test if for a given stream id the data is pending on the relayd side
131 * for reading.
c8f59ee5 132 */
6d805429 133struct lttcomm_relayd_data_pending {
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134 uint64_t stream_id;
135 uint64_t last_net_seq_num; /* Sequence number of the last packet */
a9e87764 136} LTTNG_PACKED;
c8f59ee5 137
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138struct lttcomm_relayd_begin_data_pending {
139 uint64_t session_id;
a9e87764 140} LTTNG_PACKED;
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141
142struct lttcomm_relayd_end_data_pending {
143 uint64_t session_id;
a9e87764 144} LTTNG_PACKED;
f7079f67 145
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146struct lttcomm_relayd_quiescent_control {
147 uint64_t stream_id;
148} LTTNG_PACKED;
149
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150/*
151 * Index data.
152 */
153struct lttcomm_relayd_index {
154 uint64_t relay_stream_id;
155 uint64_t net_seq_num;
156 uint64_t packet_size;
157 uint64_t content_size;
158 uint64_t timestamp_begin;
159 uint64_t timestamp_end;
160 uint64_t events_discarded;
161 uint64_t stream_id;
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162 uint64_t stream_instance_id;
163 uint64_t packet_seq_num;
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164} LTTNG_PACKED;
165
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166/*
167 * Create session in 2.4 adds additionnal parameters for live reading.
168 */
169struct lttcomm_relayd_create_session_2_4 {
36d2e35d 170 char session_name[LTTNG_NAME_MAX];
9cf3eb20 171 char hostname[LTTNG_HOST_NAME_MAX];
d3e2ba59 172 uint32_t live_timer;
7d2f7452 173 uint32_t snapshot;
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174} LTTNG_PACKED;
175
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176/*
177 * Used to ask the relay to reset the metadata trace file (regeneration).
178 * Send the new version of the metadata (starts at 0).
179 */
180struct lttcomm_relayd_reset_metadata {
181 uint64_t stream_id;
182 uint64_t version;
183} LTTNG_PACKED;
184
b8aa1682 185#endif /* _RELAYD_COMM */
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