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.
27 #include <lttng/lttng.h>
28 #include <common/defaults.h>
30 #define RELAYD_VERSION_COMM_MAJOR 2
31 #define RELAYD_VERSION_COMM_MINOR 1
34 * lttng-relayd communication header.
36 struct lttcomm_relayd_hdr
{
37 /* Circuit ID not used for now so always ignored */
39 uint64_t data_size
; /* data size following this header */
40 uint32_t cmd
; /* enum lttcomm_sessiond_command */
41 uint32_t cmd_version
; /* command version */
42 } __attribute__ ((__packed__
));
45 * lttng-relayd data header.
47 struct lttcomm_relayd_data_hdr
{
48 /* Circuit ID not used for now so always ignored */
50 uint64_t stream_id
; /* Stream ID known by the relayd */
51 uint64_t net_seq_num
; /* Network sequence number, per stream. */
52 uint32_t data_size
; /* data size following this header */
53 uint32_t padding_size
; /* Size of 0 padding the data */
54 } __attribute__ ((__packed__
));
57 * Used to add a stream on the relay daemon.
59 struct lttcomm_relayd_add_stream
{
60 char channel_name
[DEFAULT_STREAM_NAME_LEN
];
61 char pathname
[PATH_MAX
];
62 } __attribute__ ((__packed__
));
65 * Answer from an add stream command.
67 struct lttcomm_relayd_status_stream
{
70 } __attribute__ ((__packed__
));
73 * Used to return command code for command not needing special data.
75 struct lttcomm_relayd_generic_reply
{
77 } __attribute__ ((__packed__
));
80 * Used to update synchronization information.
82 struct lttcomm_relayd_update_sync_info
{
83 /* TODO: fill the structure. Feature not implemented yet */
84 } __attribute__ ((__packed__
));
89 struct lttcomm_relayd_version
{
92 } __attribute__ ((__packed__
));
95 * Metadata payload used when metadata command is sent.
97 struct lttcomm_relayd_metadata_payload
{
99 uint32_t padding_size
;
101 } __attribute__ ((__packed__
));
104 * Used to indicate that a specific stream id can now be closed.
106 struct lttcomm_relayd_close_stream
{
108 uint64_t last_net_seq_num
; /* sequence number of last packet */
109 } __attribute__ ((__packed__
));
112 * Used to test if for a given stream id the data is pending on the relayd side
115 struct lttcomm_relayd_data_pending
{
117 uint64_t last_net_seq_num
; /* Sequence number of the last packet */
118 } __attribute__ ((__packed__
));
120 #endif /* _RELAYD_COMM */