RECONNECT add option to limit the number of reconnect retries

In specific situation it might be useful to give up if a reconnect
is not successful or after a given number reconnect retries.
This patch adds the ability to change that. The default remains
the same: retry forever.

Signed-off-by: Peter Lieven <pl@kamp.de>

include/iscsi-private.h

@@ -121,6 +121,7 @@ struct iscsi_context {
 	int lun;
 	int no_auto_reconnect;
 	int reconnect_deferred;
+	int reconnect_max_retries;
 	
 	int log_level;
 	iscsi_log_fn log_fn;

include/iscsi.h

@@ -1076,6 +1076,16 @@ iscsi_set_tcp_syncnt(struct iscsi_context *iscsi, int value);
 EXTERN void
 iscsi_set_bind_interfaces(struct iscsi_context *iscsi, char * interfaces);
 
+/* This function is to set if we should retry a failed reconnect
+   
+   count is defined as follows:
+    -1 -> retry forever (default)
+    0  -> never retry
+    n  -> retry n times
+*/
+EXTERN void
+iscsi_set_reconnect_max_retries(struct iscsi_context *iscsi, int count);
+
 #ifdef __cplusplus
 }
 #endif