Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Increase cryptotest tool initialization vector (IV) size.

This fixes potential out-of-bound accesses when testing ciphers with block size
greater than 8 bytes (e.g. AES).

Submitted by: Bartlomiej Sieka tur ! semihalf dot com
Discussed with: pjd, sam

Add missing includes and correct argument to sysctlbyname

PR: misc/120274
MFC after: 1 week

Overhaul driver/subsystem api's:
o make all crypto drivers have a device_t; pseudo drivers like the s/w
crypto driver synthesize one
o change the api between the crypto subsystem and drivers to use kobj;
cryptodev_if.m defines this api
o use the fact that all crypto drivers now have a device_t to add support
for specifying which of several potential devices to use when doing
crypto operations
o add new ioctls that allow user apps to select a specific crypto device
to use (previous ioctls maintained for compatibility)
o overhaul crypto subsystem code to eliminate lots of cruft and hide
implementation details from drivers
o bring in numerous fixes from Michale Richardson/hifn; mostly for
795x parts
o add an optional mechanism for mmap'ing the hifn 795x public key h/w
to user space for use by openssl (not enabled by default)
o update crypto test tools to use new ioctl's and add cmd line options
to specify a device to use for tests

These changes will also enable much future work on improving the core
crypto subsystem; including proper load balancing and interposing code
between the core and drivers to dispatch small operations to the s/w
driver as appropriate.

These changes were instigated by the work of Michael Richardson.

Reviewed by: pjd
Approved by: re

make cryptotest compile after the latest changes to cryptodev.h

ioctl(2) commands are u_long not int.
Pass zero for sysctl new argument length, not NULL);

new version of cryptotest (w/ only code from me)

Reviewed by: imp