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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 | ||
b8aa1682 | 110 | #endif /* _RELAYD_COMM */ |