diff options
| author | markm <markm@FreeBSD.org> | 2003-11-17 23:02:21 +0000 |
|---|---|---|
| committer | markm <markm@FreeBSD.org> | 2003-11-17 23:02:21 +0000 |
| commit | f9c943515638ad456438656dd3d79e6896d4089d (patch) | |
| tree | 3d031ff4aa808b1f35307d1c7c1e8da496ee119c /sys/dev/random/hash.c | |
| parent | cc012e083576d0a4a3c5362245a17f627fbe19c4 (diff) | |
| download | FreeBSD-src-f9c943515638ad456438656dd3d79e6896d4089d.zip FreeBSD-src-f9c943515638ad456438656dd3d79e6896d4089d.tar.gz | |
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.
Diffstat (limited to 'sys/dev/random/hash.c')
| -rw-r--r-- | sys/dev/random/hash.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/dev/random/hash.c b/sys/dev/random/hash.c index 716633d..53ddb3c 100644 --- a/sys/dev/random/hash.c +++ b/sys/dev/random/hash.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 |
