Illumos Crypto Port module added to enable native encryption in zfs

A port of the Illumos Crypto Framework to a Linux kernel module (found
in module/icp). This is needed to do the actual encryption work. We cannot
use the Linux kernel's built in crypto api because it is only exported to
GPL-licensed modules. Having the ICP also means the crypto code can run on
any of the other kernels under OpenZFS. I ended up porting over most of the
internals of the framework, which means that porting over other API calls (if
we need them) should be fairly easy. Specifically, I have ported over the API
functions related to encryption, digests, macs, and crypto templates. The ICP
is able to use assembly-accelerated encryption on amd64 machines and AES-NI
instructions on Intel chips that support it. There are place-holder
directories for similar assembly optimizations for other architectures
(although they have not been written).

Signed-off-by: Tom Caputi <tcaputi@datto.com>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #4329

configure.ac

@@ -39,7 +39,7 @@ AC_CONFIG_MACRO_DIR([config])
 AC_CANONICAL_SYSTEM
 AM_MAINTAINER_MODE
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
-AM_INIT_AUTOMAKE
+AM_INIT_AUTOMAKE([subdir-objects])
 AC_CONFIG_HEADERS([zfs_config.h], [
 	(mv zfs_config.h zfs_config.h.tmp &&
 	awk -f ${ac_srcdir}/config/config.awk zfs_config.h.tmp >zfs_config.h &&
@@ -85,6 +85,7 @@ AC_CONFIG_FILES([
 	lib/libspl/include/util/Makefile
 	lib/libavl/Makefile
 	lib/libefi/Makefile
+	lib/libicp/Makefile
 	lib/libnvpair/Makefile
 	lib/libunicode/Makefile
 	lib/libuutil/Makefile
@@ -125,12 +126,14 @@ AC_CONFIG_FILES([
 	module/zcommon/Makefile
 	module/zfs/Makefile
 	module/zpios/Makefile
+	module/icp/Makefile
 	include/Makefile
 	include/linux/Makefile
 	include/sys/Makefile
 	include/sys/fs/Makefile
 	include/sys/fm/Makefile
 	include/sys/fm/fs/Makefile
+	include/sys/crypto/Makefile
 	scripts/Makefile
 	scripts/zpios-profile/Makefile
 	scripts/zpios-test/Makefile