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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 */ | |
47 | uint64_t net_seq_num; /* Network seq. number for UDP. */ | |
48 | uint32_t data_size; /* data size following this header */ | |
49 | } __attribute__ ((__packed__)); | |
50 | ||
51 | #if 0 | |
52 | /* | |
53 | * Used to create a session between the relay and the sessiond. | |
54 | */ | |
55 | struct lttcomm_relayd_create_session { | |
56 | char hostname[LTTNG_MAX_DNNAME]; | |
57 | char session_name[NAME_MAX]; | |
58 | }; | |
59 | #endif | |
60 | ||
61 | /* | |
62 | * Used to add a stream on the relay daemon. | |
63 | */ | |
64 | struct lttcomm_relayd_add_stream { | |
65 | char channel_name[LTTNG_SYMBOL_NAME_LEN]; | |
66 | char pathname[PATH_MAX]; | |
67 | } __attribute__ ((__packed__)); | |
68 | ||
69 | /* | |
70 | * Answer from an add stream command. | |
71 | */ | |
72 | struct lttcomm_relayd_status_stream { | |
73 | uint64_t handle; | |
74 | uint32_t ret_code; | |
75 | } __attribute__ ((__packed__)); | |
76 | ||
77 | /* | |
78 | * Used to return command code for command not needing special data. | |
79 | */ | |
80 | struct lttcomm_relayd_generic_reply { | |
81 | uint32_t ret_code; | |
82 | } __attribute__ ((__packed__)); | |
83 | ||
84 | /* | |
85 | * Used to update synchronization information. | |
86 | */ | |
87 | struct lttcomm_relayd_update_sync_info { | |
88 | /* TODO: fill the structure */ | |
89 | } __attribute__ ((__packed__)); | |
90 | ||
91 | /* | |
92 | * Version command. | |
93 | */ | |
94 | struct lttcomm_relayd_version { | |
95 | uint32_t major; | |
96 | uint32_t minor; | |
97 | } __attribute__ ((__packed__)); | |
98 | ||
99 | /* | |
100 | * Metadata payload used when metadata command is sent. | |
101 | */ | |
102 | struct lttcomm_relayd_metadata_payload { | |
103 | uint64_t stream_id; | |
104 | char payload[]; | |
105 | } __attribute__ ((__packed__)); | |
106 | ||
107 | #endif /* _RELAYD_COMM */ |