imsm: add support for checkpointing via 'curr_migr_unit'

[thirdparty/mdadm.git] / msg.h

diff --git a/msg.h b/msg.h
index 84ee9b3a88531a1d36f2f412909d4569d4679700..f8e89fdccc989a29923026127d8cfdbba8a4ec3d 100644 (file)
--- a/msg.h
+++ b/msg.h
@@ -17,43 +17,17 @@
  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-struct mdinfo;
-struct md_message {
-       int seq;
-       int num_bytes;
-       void *buf;
-};
-
-enum md_message_action {
-       md_action_ping_monitor,
-       md_action_remove_device,
-};
-
-struct md_generic_cmd {
-       enum md_message_action action;
-};
-
-struct md_remove_device_cmd {
-       enum md_message_action action;
-       dev_t rdev;
-};
 
-/* union of all known command types, used to sanity check ->num_bytes
- * on the receive path
- */
-union md_message_commands {
-       struct md_generic_cmd generic;
-       struct md_remove_device_cmd remove;
-};
-
-extern const int start_magic;
-extern const int end_magic;
+struct mdinfo;
+struct metadata_update;
 
-extern int receive_message(int fd, struct md_message *msg, int tmo);
-extern int send_message(int fd, struct md_message *msg, int tmo);
-extern int ack(int fd, int seq, int tmo);
-extern int nack(int fd, int err, int tmo);
+extern int receive_message(int fd, struct metadata_update *msg, int tmo);
+extern int send_message(int fd, struct metadata_update *msg, int tmo);
+extern int ack(int fd, int tmo);
+extern int wait_reply(int fd, int tmo);
 extern int connect_monitor(char *devname);
 extern int ping_monitor(char *devname);
-extern int send_remove_device(int fd, dev_t rdev, int seq, int tmo);
+extern int fping_monitor(int sock);
+extern int ping_manager(char *devname);
 
+#define MSG_MAX_LEN (4*1024*1024)