Relayd data available command support

[lttng-tools.git] / src / common / sessiond-comm / relayd.h

diff --git a/src/common/sessiond-comm/relayd.h b/src/common/sessiond-comm/relayd.h
index 67b06371f2d6d47de10b58724699e3a86810e922..5be2328b9794676462f1c0cd96a588a0e97fc406 100644 (file)
--- a/src/common/sessiond-comm/relayd.h
+++ b/src/common/sessiond-comm/relayd.h
@@ -26,6 +26,9 @@
 
 #include <lttng/lttng.h>
 
+#define RELAYD_VERSION_COMM_MAJOR             2
+#define RELAYD_VERSION_COMM_MINOR             1
+
 /*
  * lttng-relayd communication header.
  */
@@ -44,20 +47,11 @@ struct lttcomm_relayd_data_hdr {
        /* Circuit ID not used for now so always ignored */
        uint64_t circuit_id;
        uint64_t stream_id;     /* Stream ID known by the relayd */
-       uint64_t net_seq_num;   /* Network seq. number for UDP. */
+       uint64_t net_seq_num;   /* Network sequence number, per stream. */
        uint32_t data_size;     /* data size following this header */
+       uint32_t padding_size;  /* Size of 0 padding the data */
 } __attribute__ ((__packed__));
 
-#if 0
-/*
- * Used to create a session between the relay and the sessiond.
- */
-struct lttcomm_relayd_create_session {
-       char hostname[LTTNG_MAX_DNNAME];
-       char session_name[NAME_MAX];
-};
-#endif
-
 /*
  * Used to add a stream on the relay daemon.
  */
@@ -85,7 +79,7 @@ struct lttcomm_relayd_generic_reply {
  * Used to update synchronization information.
  */
 struct lttcomm_relayd_update_sync_info {
-       /* TODO: fill the structure */
+       /* TODO: fill the structure. Feature not implemented yet */
 } __attribute__ ((__packed__));
 
 /*
@@ -101,7 +95,25 @@ struct lttcomm_relayd_version {
  */
 struct lttcomm_relayd_metadata_payload {
        uint64_t stream_id;
+       uint32_t padding_size;
        char payload[];
 } __attribute__ ((__packed__));
 
+/*
+ * Used to indicate that a specific stream id can now be closed.
+ */
+struct lttcomm_relayd_close_stream {
+       uint64_t stream_id;
+       uint64_t last_net_seq_num;      /* sequence number of last packet */
+} __attribute__ ((__packed__));
+
+/*
+ * Used to test if for a given stream id the data is available on the relayd
+ * side for reading.
+ */
+struct lttcomm_relayd_data_available {
+       uint64_t stream_id;
+       uint64_t last_net_seq_num; /* Sequence number of the last packet */
+} __attribute__ ((__packed__));
+
 #endif /* _RELAYD_COMM */