src-test2/sys/dev/random, branch release/5.3.0

Perform a lockless read to test whether an entropy havesting fifo is

2004-08-11T03:33:32Z

full, avoiding the cost of mutex operations if it is. We re-test once the mutex is acquired to make sure it's still true before doing the -modify-write part of the read-modify-write. Note that due to the maximum fifo depth being pretty deep, this is unlikely to improve harvesting performance yet. Approved by: markm

Add module versions.

2004-08-02T20:42:28Z

Start the entropy device insecure/unblocked. I'll be handing over

2004-07-18T09:07:58Z

responsibility for critical randomness requirements (like sshd) to rc.d/* Requested by: many

Do a pass over all modules in the kernel and make them return EOPNOTSUPP

2004-07-15T08:26:07Z

for unknown events. A number of modules return EINVAL in this instance, and I have left those alone for now and instead taught MOD_QUIESCE to accept this as "didn't do anything".

Trim a few things from the dmesg output and stick them under bootverbose to

2004-07-01T07:46:29Z

cut down on the clutter including PCI interrupt routing, MTRR, pcibios, etc. Discussed with: USENIX Cabal

Do the dreaded s/dev_t/struct cdev */

2004-06-16T09:47:26Z

Bump __FreeBSD_version accordingly.

Add some missing includes which are masked by the

2004-05-30T17:57:46Z

one on death-row in

Add a Davies-Meyer style hash to the output. This is still pure

2004-04-17T19:26:53Z

Nehemiah chip, but the work is all done in hardware. There are three opportunities to add other entropy; the Data Buffer, the Cipher's IV and the Cipher's key. A future commit will exploit these opportunities.

More removal of the abortive locking code; malloc buffers when

2004-04-17T19:23:15Z

needed, rather than potentially reusing contents.

Attempts to make this device Giant-free were ill-conceived as

2004-04-16T17:10:54Z

uiomove(9) is not properly locked. So, return to NEEDGIANT mode. Later, when uiomove is finely locked, I'll revisit. While I'm here, provide some temporary debugging output to help catch blocking startups.