2 * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com>
3 * Julien Desfossez <julien.desfossez@efficios.com>
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.
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
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.
25 #include <lttng/lttng.h>
26 #include <common/defaults.h>
27 #include <common/index/ctf-index.h>
29 #define RELAYD_VERSION_COMM_MAJOR VERSION_MAJOR
30 #define RELAYD_VERSION_COMM_MINOR VERSION_MINOR
33 * lttng-relayd communication header.
35 struct lttcomm_relayd_hdr
{
36 /* Circuit ID not used for now so always ignored */
38 uint64_t data_size
; /* data size following this header */
39 uint32_t cmd
; /* enum lttcomm_relayd_command */
40 uint32_t cmd_version
; /* command version */
44 * lttng-relayd data header.
46 struct lttcomm_relayd_data_hdr
{
47 /* Circuit ID not used for now so always ignored */
49 uint64_t stream_id
; /* Stream ID known by the relayd */
50 uint64_t net_seq_num
; /* Network sequence number, per stream. */
51 uint32_t data_size
; /* data size following this header */
52 uint32_t padding_size
; /* Size of 0 padding the data */
56 * Reply from a create session command.
58 struct lttcomm_relayd_status_session
{
64 * Used to add a stream on the relay daemon.
66 struct lttcomm_relayd_add_stream
{
67 char channel_name
[DEFAULT_STREAM_NAME_LEN
];
68 char pathname
[LTTNG_PATH_MAX
];
72 * Used to add a stream on the relay daemon.
73 * Protocol version 2.2
75 struct lttcomm_relayd_add_stream_2_2
{
76 char channel_name
[DEFAULT_STREAM_NAME_LEN
];
77 char pathname
[LTTNG_PATH_MAX
];
78 uint64_t tracefile_size
;
79 uint64_t tracefile_count
;
83 * Used to add a stream on the relay daemon.
84 * Protocol version 2.11
86 struct lttcomm_relayd_add_stream_2_11
{
87 char channel_name
[DEFAULT_STREAM_NAME_LEN
];
88 char pathname
[LTTNG_PATH_MAX
];
89 uint32_t domain
; /* enum lttng_domain_type */
90 uint64_t tracefile_size
;
91 uint64_t tracefile_count
;
95 * Answer from an add stream command.
97 struct lttcomm_relayd_status_stream
{
103 * Used to return command code for command not needing special data.
105 struct lttcomm_relayd_generic_reply
{
112 struct lttcomm_relayd_version
{
118 * Metadata payload used when metadata command is sent.
120 struct lttcomm_relayd_metadata_payload
{
122 uint32_t padding_size
;
127 * Used to indicate that a specific stream id can now be closed.
129 struct lttcomm_relayd_close_stream
{
131 uint64_t last_net_seq_num
; /* sequence number of last packet */
135 * Used to test if for a given stream id the data is pending on the relayd side
138 struct lttcomm_relayd_data_pending
{
140 uint64_t last_net_seq_num
; /* Sequence number of the last packet */
143 struct lttcomm_relayd_begin_data_pending
{
147 struct lttcomm_relayd_end_data_pending
{
151 struct lttcomm_relayd_quiescent_control
{
158 struct lttcomm_relayd_index
{
159 uint64_t relay_stream_id
;
160 uint64_t net_seq_num
;
161 uint64_t packet_size
;
162 uint64_t content_size
;
163 uint64_t timestamp_begin
;
164 uint64_t timestamp_end
;
165 uint64_t events_discarded
;
168 uint64_t stream_instance_id
;
169 uint64_t packet_seq_num
;
172 static inline size_t lttcomm_relayd_index_len(uint32_t major
, uint32_t minor
)
177 return offsetof(struct lttcomm_relayd_index
, stream_id
)
178 + member_sizeof(struct lttcomm_relayd_index
,
181 return offsetof(struct lttcomm_relayd_index
, packet_seq_num
)
182 + member_sizeof(struct lttcomm_relayd_index
,
192 * Create session in 2.4 adds additionnal parameters for live reading.
194 struct lttcomm_relayd_create_session_2_4
{
195 char session_name
[LTTNG_NAME_MAX
];
196 char hostname
[LTTNG_HOST_NAME_MAX
];
202 * Used to ask the relay to reset the metadata trace file (regeneration).
203 * Send the new version of the metadata (starts at 0).
205 struct lttcomm_relayd_reset_metadata
{
210 struct lttcomm_relayd_rotate_stream
{
212 uint64_t rotate_at_seq_num
;
213 uint64_t new_chunk_id
;
214 char new_pathname
[LTTNG_PATH_MAX
];
217 struct lttcomm_relayd_rotate_rename
{
218 char current_path
[LTTNG_PATH_MAX
];
219 char new_path
[LTTNG_PATH_MAX
];
222 struct lttcomm_relayd_rotate_pending
{
226 #endif /* _RELAYD_COMM */