Overhaul the entropy device:

o Each source gets its own queue, which is a FIFO, not a ring buffer.
  The FIFOs are implemented with the sys/queue.h macros. The separation
  is so that a low entropy/high rate source can't swamp the harvester
  with low-grade entropy and destroy the reseeds.

o Each FIFO is limited to 256 (set as a macro, so adjustable) events
  queueable. Full FIFOs are ignored by the harvester. This is to
  prevent memory wastage, and helps to keep the kernel thread CPU
  usage within reasonable limits.

o There is no need to break up the event harvesting into ${burst}
  sized chunks, so retire that feature.

o Break the device away from its roots with the memory device, and
  allow it to get its major number automagically.

1 files changed, 5 insertions, 5 deletions

diff --git a/sys/dev/random/harvest.c b/sys/dev/random/harvest.c
index b73450d..fd94bd2 100644
--- a/sys/dev/random/harvest.c
+++ b/sys/dev/random/harvest.c
@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2000 Mark R V Murray
+ * Copyright (c) 2000, 2001, 2002, 2003 Mark R V Murray
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -29,16 +29,16 @@
 __FBSDID("$FreeBSD$");
 
 #include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/types.h>
-#include <sys/queue.h>
 #include <sys/kthread.h>
 #include <sys/lock.h>
+#include <sys/malloc.h>
 #include <sys/mutex.h>
 #include <sys/poll.h>
+#include <sys/queue.h>
+#include <sys/random.h>
 #include <sys/selinfo.h>
 #include <sys/sysctl.h>
-#include <sys/random.h>
+#include <sys/systm.h>
 
 #include <machine/cpu.h>