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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 | ||
29 | /* | |
30 | * lttng-relayd communication header. | |
31 | */ | |
32 | struct lttcomm_relayd_hdr { | |
33 | /* Circuit ID not used for now so always ignored */ | |
34 | uint64_t circuit_id; | |
35 | uint64_t data_size; /* data size following this header */ | |
36 | uint32_t cmd; /* enum lttcomm_sessiond_command */ | |
37 | uint32_t cmd_version; /* command version */ | |
38 | } __attribute__ ((__packed__)); | |
39 | ||
40 | /* | |
41 | * lttng-relayd data header. | |
42 | */ | |
43 | struct lttcomm_relayd_data_hdr { | |
44 | /* Circuit ID not used for now so always ignored */ | |
45 | uint64_t circuit_id; | |
46 | uint64_t stream_id; /* Stream ID known by the relayd */ | |
173af62f | 47 | uint64_t net_seq_num; /* Network sequence number, per stream. */ |
b8aa1682 JD |
48 | uint32_t data_size; /* data size following this header */ |
49 | } __attribute__ ((__packed__)); | |
50 | ||
b8aa1682 JD |
51 | /* |
52 | * Used to add a stream on the relay daemon. | |
53 | */ | |
54 | struct lttcomm_relayd_add_stream { | |
55 | char channel_name[LTTNG_SYMBOL_NAME_LEN]; | |
56 | char pathname[PATH_MAX]; | |
57 | } __attribute__ ((__packed__)); | |
58 | ||
59 | /* | |
60 | * Answer from an add stream command. | |
61 | */ | |
62 | struct lttcomm_relayd_status_stream { | |
63 | uint64_t handle; | |
64 | uint32_t ret_code; | |
65 | } __attribute__ ((__packed__)); | |
66 | ||
67 | /* | |
68 | * Used to return command code for command not needing special data. | |
69 | */ | |
70 | struct lttcomm_relayd_generic_reply { | |
71 | uint32_t ret_code; | |
72 | } __attribute__ ((__packed__)); | |
73 | ||
74 | /* | |
75 | * Used to update synchronization information. | |
76 | */ | |
77 | struct lttcomm_relayd_update_sync_info { | |
173af62f | 78 | /* TODO: fill the structure. Feature not implemented yet */ |
b8aa1682 JD |
79 | } __attribute__ ((__packed__)); |
80 | ||
81 | /* | |
82 | * Version command. | |
83 | */ | |
84 | struct lttcomm_relayd_version { | |
85 | uint32_t major; | |
86 | uint32_t minor; | |
87 | } __attribute__ ((__packed__)); | |
88 | ||
89 | /* | |
90 | * Metadata payload used when metadata command is sent. | |
91 | */ | |
92 | struct lttcomm_relayd_metadata_payload { | |
93 | uint64_t stream_id; | |
94 | char payload[]; | |
95 | } __attribute__ ((__packed__)); | |
96 | ||
173af62f DG |
97 | /* |
98 | * Used to indicate that a specific stream id can now be closed. | |
99 | */ | |
100 | struct lttcomm_relayd_close_stream { | |
101 | uint64_t stream_id; | |
102 | uint64_t last_net_seq_num; /* sequence number of last packet */ | |
103 | } __attribute__ ((__packed__)); | |
104 | ||
b8aa1682 | 105 | #endif /* _RELAYD_COMM */ |